diff --git a/CHANGELOG.md b/CHANGELOG.md index e7f0798..d22cda6 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,3 +1,7 @@ +## 6.6.2 (3 April 2021) +* Update updater to update to version 6 +* Upgrade D3 to 6.6.3 + ## 5.16.0 (31 March 2021) * Upgrade D3 to 5.16.0 diff --git a/README.md b/README.md index dfa1ef1..42fa4a1 100644 --- a/README.md +++ b/README.md @@ -8,7 +8,7 @@ d3-rails provides D3 for Rails 3.1 and higher. ## Version -d3-rails comes with version 5.16.0 of D3.js. The d3-rails version will +d3-rails comes with version 6.6.2 of D3.js. The d3-rails version will always mirror the version of D3. If you need a newer version of d3-rails, see section Development (below). diff --git a/Rakefile b/Rakefile index aa12fa4..e4c8d97 100644 --- a/Rakefile +++ b/Rakefile @@ -4,10 +4,10 @@ Bundler::GemHelper.install_tasks namespace :d3 do desc 'Update d3 version' task :update_version do - `curl -o app/assets/javascripts/d3.js https://d3js.org/d3.v5.js` - `curl -o app/assets/javascripts/d3.min.js https://d3js.org/d3.v5.min.js` - `cp app/assets/javascripts/d3.js app/assets/javascripts/d3.v5.js` - `cp app/assets/javascripts/d3.min.js app/assets/javascripts/d3.v5.min.js` + `curl -o app/assets/javascripts/d3.js https://d3js.org/d3.v6.js` + `curl -o app/assets/javascripts/d3.min.js https://d3js.org/d3.v6.min.js` + `cp app/assets/javascripts/d3.js app/assets/javascripts/d3.v6.js` + `cp app/assets/javascripts/d3.min.js app/assets/javascripts/d3.v6.min.js` version = File.open("app/assets/javascripts/d3.js") { |f| f.each_line.lazy.select { |line| line.match(/((\d+\.)(\d+\.)(\*|\d+))/) diff --git a/app/assets/javascripts/d3.js b/app/assets/javascripts/d3.js index 632b3fa..1c16be0 100644 --- a/app/assets/javascripts/d3.js +++ b/app/assets/javascripts/d3.js @@ -1,193 +1,438 @@ -// https://d3js.org v5.16.0 Copyright 2020 Mike Bostock +// https://d3js.org v6.6.2 Copyright 2021 Mike Bostock (function (global, factory) { typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : typeof define === 'function' && define.amd ? define(['exports'], factory) : -(global = global || self, factory(global.d3 = global.d3 || {})); -}(this, function (exports) { 'use strict'; +(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {})); +}(this, (function (exports) { 'use strict'; -var version = "5.16.0"; +var version = "6.6.2"; -function ascending(a, b) { +function ascending$3(a, b) { return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN; } -function bisector(compare) { - if (compare.length === 1) compare = ascendingComparator(compare); - return { - left: function(a, x, lo, hi) { - if (lo == null) lo = 0; - if (hi == null) hi = a.length; - while (lo < hi) { - var mid = lo + hi >>> 1; - if (compare(a[mid], x) < 0) lo = mid + 1; - else hi = mid; - } - return lo; - }, - right: function(a, x, lo, hi) { - if (lo == null) lo = 0; - if (hi == null) hi = a.length; - while (lo < hi) { - var mid = lo + hi >>> 1; - if (compare(a[mid], x) > 0) hi = mid; - else lo = mid + 1; - } - return lo; +function bisector(f) { + let delta = f; + let compare = f; + + if (f.length === 1) { + delta = (d, x) => f(d) - x; + compare = ascendingComparator(f); + } + + function left(a, x, lo, hi) { + if (lo == null) lo = 0; + if (hi == null) hi = a.length; + while (lo < hi) { + const mid = (lo + hi) >>> 1; + if (compare(a[mid], x) < 0) lo = mid + 1; + else hi = mid; } - }; + return lo; + } + + function right(a, x, lo, hi) { + if (lo == null) lo = 0; + if (hi == null) hi = a.length; + while (lo < hi) { + const mid = (lo + hi) >>> 1; + if (compare(a[mid], x) > 0) hi = mid; + else lo = mid + 1; + } + return lo; + } + + function center(a, x, lo, hi) { + if (lo == null) lo = 0; + if (hi == null) hi = a.length; + const i = left(a, x, lo, hi - 1); + return i > lo && delta(a[i - 1], x) > -delta(a[i], x) ? i - 1 : i; + } + + return {left, center, right}; } function ascendingComparator(f) { - return function(d, x) { - return ascending(f(d), x); - }; + return (d, x) => ascending$3(f(d), x); } -var ascendingBisect = bisector(ascending); -var bisectRight = ascendingBisect.right; -var bisectLeft = ascendingBisect.left; +function number$3(x) { + return x === null ? NaN : +x; +} -function pairs(array, f) { - if (f == null) f = pair; - var i = 0, n = array.length - 1, p = array[0], pairs = new Array(n < 0 ? 0 : n); - while (i < n) pairs[i] = f(p, p = array[++i]); - return pairs; +function* numbers(values, valueof) { + if (valueof === undefined) { + for (let value of values) { + if (value != null && (value = +value) >= value) { + yield value; + } + } + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null && (value = +value) >= value) { + yield value; + } + } + } } -function pair(a, b) { - return [a, b]; +const ascendingBisect = bisector(ascending$3); +const bisectRight = ascendingBisect.right; +const bisectLeft = ascendingBisect.left; +const bisectCenter = bisector(number$3).center; + +function count$1(values, valueof) { + let count = 0; + if (valueof === undefined) { + for (let value of values) { + if (value != null && (value = +value) >= value) { + ++count; + } + } + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null && (value = +value) >= value) { + ++count; + } + } + } + return count; } -function cross(values0, values1, reduce) { - var n0 = values0.length, - n1 = values1.length, - values = new Array(n0 * n1), - i0, - i1, - i, - value0; +function length$3(array) { + return array.length | 0; +} + +function empty$2(length) { + return !(length > 0); +} + +function arrayify(values) { + return typeof values !== "object" || "length" in values ? values : Array.from(values); +} - if (reduce == null) reduce = pair; +function reducer(reduce) { + return values => reduce(...values); +} - for (i0 = i = 0; i0 < n0; ++i0) { - for (value0 = values0[i0], i1 = 0; i1 < n1; ++i1, ++i) { - values[i] = reduce(value0, values1[i1]); +function cross$2(...values) { + const reduce = typeof values[values.length - 1] === "function" && reducer(values.pop()); + values = values.map(arrayify); + const lengths = values.map(length$3); + const j = values.length - 1; + const index = new Array(j + 1).fill(0); + const product = []; + if (j < 0 || lengths.some(empty$2)) return product; + while (true) { + product.push(index.map((j, i) => values[i][j])); + let i = j; + while (++index[i] === lengths[i]) { + if (i === 0) return reduce ? product.map(reduce) : product; + index[i--] = 0; } } - - return values; } -function descending(a, b) { - return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN; +function cumsum(values, valueof) { + var sum = 0, index = 0; + return Float64Array.from(values, valueof === undefined + ? v => (sum += +v || 0) + : v => (sum += +valueof(v, index++, values) || 0)); } -function number(x) { - return x === null ? NaN : +x; +function descending$2(a, b) { + return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN; } function variance(values, valueof) { - var n = values.length, - m = 0, - i = -1, - mean = 0, - value, - delta, - sum = 0; - - if (valueof == null) { - while (++i < n) { - if (!isNaN(value = number(values[i]))) { + let count = 0; + let delta; + let mean = 0; + let sum = 0; + if (valueof === undefined) { + for (let value of values) { + if (value != null && (value = +value) >= value) { delta = value - mean; - mean += delta / ++m; + mean += delta / ++count; sum += delta * (value - mean); } } - } - - else { - while (++i < n) { - if (!isNaN(value = number(valueof(values[i], i, values)))) { + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null && (value = +value) >= value) { delta = value - mean; - mean += delta / ++m; + mean += delta / ++count; sum += delta * (value - mean); } } } - - if (m > 1) return sum / (m - 1); + if (count > 1) return sum / (count - 1); } -function deviation(array, f) { - var v = variance(array, f); +function deviation(values, valueof) { + const v = variance(values, valueof); return v ? Math.sqrt(v) : v; } -function extent(values, valueof) { - var n = values.length, - i = -1, - value, - min, - max; - - if (valueof == null) { - while (++i < n) { // Find the first comparable value. - if ((value = values[i]) != null && value >= value) { - min = max = value; - while (++i < n) { // Compare the remaining values. - if ((value = values[i]) != null) { - if (min > value) min = value; - if (max < value) max = value; - } +function extent$1(values, valueof) { + let min; + let max; + if (valueof === undefined) { + for (const value of values) { + if (value != null) { + if (min === undefined) { + if (value >= value) min = max = value; + } else { + if (min > value) min = value; + if (max < value) max = value; + } + } + } + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null) { + if (min === undefined) { + if (value >= value) min = max = value; + } else { + if (min > value) min = value; + if (max < value) max = value; } } } } + return [min, max]; +} - else { - while (++i < n) { // Find the first comparable value. - if ((value = valueof(values[i], i, values)) != null && value >= value) { - min = max = value; - while (++i < n) { // Compare the remaining values. - if ((value = valueof(values[i], i, values)) != null) { - if (min > value) min = value; - if (max < value) max = value; - } - } +// https://github.com/python/cpython/blob/a74eea238f5baba15797e2e8b570d153bc8690a7/Modules/mathmodule.c#L1423 +class Adder { + constructor() { + this._partials = new Float64Array(32); + this._n = 0; + } + add(x) { + const p = this._partials; + let i = 0; + for (let j = 0; j < this._n && j < 32; j++) { + const y = p[j], + hi = x + y, + lo = Math.abs(x) < Math.abs(y) ? x - (hi - y) : y - (hi - x); + if (lo) p[i++] = lo; + x = hi; + } + p[i] = x; + this._n = i + 1; + return this; + } + valueOf() { + const p = this._partials; + let n = this._n, x, y, lo, hi = 0; + if (n > 0) { + hi = p[--n]; + while (n > 0) { + x = hi; + y = p[--n]; + hi = x + y; + lo = y - (hi - x); + if (lo) break; + } + if (n > 0 && ((lo < 0 && p[n - 1] < 0) || (lo > 0 && p[n - 1] > 0))) { + y = lo * 2; + x = hi + y; + if (y == x - hi) hi = x; } } + return hi; } +} - return [min, max]; +function fsum(values, valueof) { + const adder = new Adder(); + if (valueof === undefined) { + for (let value of values) { + if (value = +value) { + adder.add(value); + } + } + } else { + let index = -1; + for (let value of values) { + if (value = +valueof(value, ++index, values)) { + adder.add(value); + } + } + } + return +adder; } -var array = Array.prototype; +function fcumsum(values, valueof) { + const adder = new Adder(); + let index = -1; + return Float64Array.from(values, valueof === undefined + ? v => adder.add(+v || 0) + : v => adder.add(+valueof(v, ++index, values) || 0) + ); +} -var slice = array.slice; -var map = array.map; +class InternMap extends Map { + constructor(entries, key = keyof) { + super(); + Object.defineProperties(this, {_intern: {value: new Map()}, _key: {value: key}}); + if (entries != null) for (const [key, value] of entries) this.set(key, value); + } + get(key) { + return super.get(intern_get(this, key)); + } + has(key) { + return super.has(intern_get(this, key)); + } + set(key, value) { + return super.set(intern_set(this, key), value); + } + delete(key) { + return super.delete(intern_delete(this, key)); + } +} -function constant(x) { - return function() { - return x; - }; +class InternSet extends Set { + constructor(values, key = keyof) { + super(); + Object.defineProperties(this, {_intern: {value: new Map()}, _key: {value: key}}); + if (values != null) for (const value of values) this.add(value); + } + has(value) { + return super.has(intern_get(this, value)); + } + add(value) { + return super.add(intern_set(this, value)); + } + delete(value) { + return super.delete(intern_delete(this, value)); + } } -function identity(x) { +function intern_get({_intern, _key}, value) { + const key = _key(value); + return _intern.has(key) ? _intern.get(key) : value; +} + +function intern_set({_intern, _key}, value) { + const key = _key(value); + if (_intern.has(key)) return _intern.get(key); + _intern.set(key, value); + return value; +} + +function intern_delete({_intern, _key}, value) { + const key = _key(value); + if (_intern.has(key)) { + value = _intern.get(value); + _intern.delete(key); + } + return value; +} + +function keyof(value) { + return value !== null && typeof value === "object" ? value.valueOf() : value; +} + +function identity$9(x) { return x; } -function sequence(start, stop, step) { - start = +start, stop = +stop, step = (n = arguments.length) < 2 ? (stop = start, start = 0, 1) : n < 3 ? 1 : +step; +function group(values, ...keys) { + return nest(values, identity$9, identity$9, keys); +} - var i = -1, - n = Math.max(0, Math.ceil((stop - start) / step)) | 0, - range = new Array(n); +function groups(values, ...keys) { + return nest(values, Array.from, identity$9, keys); +} - while (++i < n) { - range[i] = start + i * step; +function rollup(values, reduce, ...keys) { + return nest(values, identity$9, reduce, keys); +} + +function rollups(values, reduce, ...keys) { + return nest(values, Array.from, reduce, keys); +} + +function index$4(values, ...keys) { + return nest(values, identity$9, unique, keys); +} + +function indexes(values, ...keys) { + return nest(values, Array.from, unique, keys); +} + +function unique(values) { + if (values.length !== 1) throw new Error("duplicate key"); + return values[0]; +} + +function nest(values, map, reduce, keys) { + return (function regroup(values, i) { + if (i >= keys.length) return reduce(values); + const groups = new InternMap(); + const keyof = keys[i++]; + let index = -1; + for (const value of values) { + const key = keyof(value, ++index, values); + const group = groups.get(key); + if (group) group.push(value); + else groups.set(key, [value]); + } + for (const [key, values] of groups) { + groups.set(key, regroup(values, i)); + } + return map(groups); + })(values, 0); +} + +function permute(source, keys) { + return Array.from(keys, key => source[key]); +} + +function sort(values, ...F) { + if (typeof values[Symbol.iterator] !== "function") throw new TypeError("values is not iterable"); + values = Array.from(values); + let [f = ascending$3] = F; + if (f.length === 1 || F.length > 1) { + const index = Uint32Array.from(values, (d, i) => i); + if (F.length > 1) { + F = F.map(f => values.map(f)); + index.sort((i, j) => { + for (const f of F) { + const c = ascending$3(f[i], f[j]); + if (c) return c; + } + }); + } else { + f = values.map(f); + index.sort((i, j) => ascending$3(f[i], f[j])); + } + return permute(values, index); } + return values.sort(f); +} - return range; +function groupSort(values, reduce, key) { + return (reduce.length === 1 + ? sort(rollup(values, reduce, key), (([ak, av], [bk, bv]) => ascending$3(av, bv) || ascending$3(ak, bk))) + : sort(group(values, key), (([ak, av], [bk, bv]) => reduce(av, bv) || ascending$3(ak, bk)))) + .map(([key]) => key); +} + +var array$5 = Array.prototype; + +var slice$4 = array$5.slice; + +function constant$b(x) { + return function() { + return x; + }; } var e10 = Math.sqrt(50), @@ -207,15 +452,18 @@ function ticks(start, stop, count) { if ((step = tickIncrement(start, stop, count)) === 0 || !isFinite(step)) return []; if (step > 0) { - start = Math.ceil(start / step); - stop = Math.floor(stop / step); - ticks = new Array(n = Math.ceil(stop - start + 1)); - while (++i < n) ticks[i] = (start + i) * step; + let r0 = Math.round(start / step), r1 = Math.round(stop / step); + if (r0 * step < start) ++r0; + if (r1 * step > stop) --r1; + ticks = new Array(n = r1 - r0 + 1); + while (++i < n) ticks[i] = (r0 + i) * step; } else { - start = Math.floor(start * step); - stop = Math.ceil(stop * step); - ticks = new Array(n = Math.ceil(start - stop + 1)); - while (++i < n) ticks[i] = (start - i) / step; + step = -step; + let r0 = Math.round(start * step), r1 = Math.round(stop * step); + if (r0 / step < start) ++r0; + if (r1 / step > stop) --r1; + ticks = new Array(n = r1 - r0 + 1); + while (++i < n) ticks[i] = (r0 + i) / step; } if (reverse) ticks.reverse(); @@ -242,16 +490,35 @@ function tickStep(start, stop, count) { return stop < start ? -step1 : step1; } +function nice$1(start, stop, count) { + let prestep; + while (true) { + const step = tickIncrement(start, stop, count); + if (step === prestep || step === 0 || !isFinite(step)) { + return [start, stop]; + } else if (step > 0) { + start = Math.floor(start / step) * step; + stop = Math.ceil(stop / step) * step; + } else if (step < 0) { + start = Math.ceil(start * step) / step; + stop = Math.floor(stop * step) / step; + } + prestep = step; + } +} + function thresholdSturges(values) { - return Math.ceil(Math.log(values.length) / Math.LN2) + 1; + return Math.ceil(Math.log(count$1(values)) / Math.LN2) + 1; } -function histogram() { - var value = identity, - domain = extent, +function bin() { + var value = identity$9, + domain = extent$1, threshold = thresholdSturges; function histogram(data) { + if (!Array.isArray(data)) data = Array.from(data); + var i, n = data.length, x, @@ -266,10 +533,34 @@ function histogram() { x1 = xz[1], tz = threshold(values, x0, x1); - // Convert number of thresholds into uniform thresholds. + // Convert number of thresholds into uniform thresholds, and nice the + // default domain accordingly. if (!Array.isArray(tz)) { - tz = tickStep(x0, x1, tz); - tz = sequence(Math.ceil(x0 / tz) * tz, x1, tz); // exclusive + const max = x1, tn = +tz; + if (domain === extent$1) [x0, x1] = nice$1(x0, x1, tn); + tz = ticks(x0, x1, tn); + + // If the last threshold is coincident with the domain’s upper bound, the + // last bin will be zero-width. If the default domain is used, and this + // last threshold is coincident with the maximum input value, we can + // extend the niced upper bound by one tick to ensure uniform bin widths; + // otherwise, we simply remove the last threshold. Note that we don’t + // coerce values or the domain to numbers, and thus must be careful to + // compare order (>=) rather than strict equality (===)! + if (tz[tz.length - 1] >= x1) { + if (max >= x1 && domain === extent$1) { + const step = tickIncrement(x0, x1, tn); + if (isFinite(step)) { + if (step > 0) { + x1 = (Math.floor(x1 / step) + 1) * step; + } else if (step < 0) { + x1 = (Math.ceil(x1 * -step) + 1) / -step; + } + } + } else { + tz.pop(); + } + } } // Remove any thresholds outside the domain. @@ -299,22 +590,119 @@ function histogram() { } histogram.value = function(_) { - return arguments.length ? (value = typeof _ === "function" ? _ : constant(_), histogram) : value; + return arguments.length ? (value = typeof _ === "function" ? _ : constant$b(_), histogram) : value; }; histogram.domain = function(_) { - return arguments.length ? (domain = typeof _ === "function" ? _ : constant([_[0], _[1]]), histogram) : domain; + return arguments.length ? (domain = typeof _ === "function" ? _ : constant$b([_[0], _[1]]), histogram) : domain; }; histogram.thresholds = function(_) { - return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant(slice.call(_)) : constant(_), histogram) : threshold; + return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant$b(slice$4.call(_)) : constant$b(_), histogram) : threshold; }; return histogram; } -function threshold(values, p, valueof) { - if (valueof == null) valueof = number; +function max$3(values, valueof) { + let max; + if (valueof === undefined) { + for (const value of values) { + if (value != null + && (max < value || (max === undefined && value >= value))) { + max = value; + } + } + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null + && (max < value || (max === undefined && value >= value))) { + max = value; + } + } + } + return max; +} + +function min$2(values, valueof) { + let min; + if (valueof === undefined) { + for (const value of values) { + if (value != null + && (min > value || (min === undefined && value >= value))) { + min = value; + } + } + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null + && (min > value || (min === undefined && value >= value))) { + min = value; + } + } + } + return min; +} + +// Based on https://github.com/mourner/quickselect +// ISC license, Copyright 2018 Vladimir Agafonkin. +function quickselect(array, k, left = 0, right = array.length - 1, compare = ascending$3) { + while (right > left) { + if (right - left > 600) { + const n = right - left + 1; + const m = k - left + 1; + const z = Math.log(n); + const s = 0.5 * Math.exp(2 * z / 3); + const sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1); + const newLeft = Math.max(left, Math.floor(k - m * s / n + sd)); + const newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd)); + quickselect(array, k, newLeft, newRight, compare); + } + + const t = array[k]; + let i = left; + let j = right; + + swap$1(array, left, k); + if (compare(array[right], t) > 0) swap$1(array, left, right); + + while (i < j) { + swap$1(array, i, j), ++i, --j; + while (compare(array[i], t) < 0) ++i; + while (compare(array[j], t) > 0) --j; + } + + if (compare(array[left], t) === 0) swap$1(array, left, j); + else ++j, swap$1(array, j, right); + + if (j <= k) left = j + 1; + if (k <= j) right = j - 1; + } + return array; +} + +function swap$1(array, i, j) { + const t = array[i]; + array[i] = array[j]; + array[j] = t; +} + +function quantile$1(values, p, valueof) { + values = Float64Array.from(numbers(values, valueof)); + if (!(n = values.length)) return; + if ((p = +p) <= 0 || n < 2) return min$2(values); + if (p >= 1) return max$3(values); + var n, + i = (n - 1) * p, + i0 = Math.floor(i), + value0 = max$3(quickselect(values, i0).subarray(0, i0 + 1)), + value1 = min$2(values.subarray(i0 + 1)); + return value0 + (value1 - value0) * (i - i0); +} + +function quantileSorted(values, p, valueof = number$3) { if (!(n = values.length)) return; if ((p = +p) <= 0 || n < 2) return +valueof(values[0], 0, values); if (p >= 1) return +valueof(values[n - 1], n - 1, values); @@ -327,219 +715,254 @@ function threshold(values, p, valueof) { } function freedmanDiaconis(values, min, max) { - values = map.call(values, number).sort(ascending); - return Math.ceil((max - min) / (2 * (threshold(values, 0.75) - threshold(values, 0.25)) * Math.pow(values.length, -1 / 3))); + return Math.ceil((max - min) / (2 * (quantile$1(values, 0.75) - quantile$1(values, 0.25)) * Math.pow(count$1(values), -1 / 3))); } function scott(values, min, max) { - return Math.ceil((max - min) / (3.5 * deviation(values) * Math.pow(values.length, -1 / 3))); -} - -function max(values, valueof) { - var n = values.length, - i = -1, - value, - max; - - if (valueof == null) { - while (++i < n) { // Find the first comparable value. - if ((value = values[i]) != null && value >= value) { - max = value; - while (++i < n) { // Compare the remaining values. - if ((value = values[i]) != null && value > max) { - max = value; - } - } + return Math.ceil((max - min) / (3.5 * deviation(values) * Math.pow(count$1(values), -1 / 3))); +} + +function maxIndex(values, valueof) { + let max; + let maxIndex = -1; + let index = -1; + if (valueof === undefined) { + for (const value of values) { + ++index; + if (value != null + && (max < value || (max === undefined && value >= value))) { + max = value, maxIndex = index; } } - } - - else { - while (++i < n) { // Find the first comparable value. - if ((value = valueof(values[i], i, values)) != null && value >= value) { - max = value; - while (++i < n) { // Compare the remaining values. - if ((value = valueof(values[i], i, values)) != null && value > max) { - max = value; - } - } + } else { + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null + && (max < value || (max === undefined && value >= value))) { + max = value, maxIndex = index; } } } - - return max; + return maxIndex; } function mean(values, valueof) { - var n = values.length, - m = n, - i = -1, - value, - sum = 0; - - if (valueof == null) { - while (++i < n) { - if (!isNaN(value = number(values[i]))) sum += value; - else --m; + let count = 0; + let sum = 0; + if (valueof === undefined) { + for (let value of values) { + if (value != null && (value = +value) >= value) { + ++count, sum += value; + } } - } - - else { - while (++i < n) { - if (!isNaN(value = number(valueof(values[i], i, values)))) sum += value; - else --m; + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null && (value = +value) >= value) { + ++count, sum += value; + } } } - - if (m) return sum / m; + if (count) return sum / count; } function median(values, valueof) { - var n = values.length, - i = -1, - value, - numbers = []; + return quantile$1(values, 0.5, valueof); +} - if (valueof == null) { - while (++i < n) { - if (!isNaN(value = number(values[i]))) { - numbers.push(value); - } - } +function* flatten(arrays) { + for (const array of arrays) { + yield* array; } +} - else { - while (++i < n) { - if (!isNaN(value = number(valueof(values[i], i, values)))) { - numbers.push(value); +function merge(arrays) { + return Array.from(flatten(arrays)); +} + +function minIndex(values, valueof) { + let min; + let minIndex = -1; + let index = -1; + if (valueof === undefined) { + for (const value of values) { + ++index; + if (value != null + && (min > value || (min === undefined && value >= value))) { + min = value, minIndex = index; + } + } + } else { + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null + && (min > value || (min === undefined && value >= value))) { + min = value, minIndex = index; } } } - - return threshold(numbers.sort(ascending), 0.5); + return minIndex; } -function merge(arrays) { - var n = arrays.length, - m, - i = -1, - j = 0, - merged, - array; - - while (++i < n) j += arrays[i].length; - merged = new Array(j); - - while (--n >= 0) { - array = arrays[n]; - m = array.length; - while (--m >= 0) { - merged[--j] = array[m]; - } +function pairs(values, pairof = pair) { + const pairs = []; + let previous; + let first = false; + for (const value of values) { + if (first) pairs.push(pairof(previous, value)); + previous = value; + first = true; } + return pairs; +} - return merged; +function pair(a, b) { + return [a, b]; } -function min(values, valueof) { - var n = values.length, - i = -1, - value, - min; +function sequence(start, stop, step) { + start = +start, stop = +stop, step = (n = arguments.length) < 2 ? (stop = start, start = 0, 1) : n < 3 ? 1 : +step; - if (valueof == null) { - while (++i < n) { // Find the first comparable value. - if ((value = values[i]) != null && value >= value) { - min = value; - while (++i < n) { // Compare the remaining values. - if ((value = values[i]) != null && min > value) { - min = value; - } - } - } - } + var i = -1, + n = Math.max(0, Math.ceil((stop - start) / step)) | 0, + range = new Array(n); + + while (++i < n) { + range[i] = start + i * step; } - else { - while (++i < n) { // Find the first comparable value. - if ((value = valueof(values[i], i, values)) != null && value >= value) { + return range; +} + +function least(values, compare = ascending$3) { + let min; + let defined = false; + if (compare.length === 1) { + let minValue; + for (const element of values) { + const value = compare(element); + if (defined + ? ascending$3(value, minValue) < 0 + : ascending$3(value, value) === 0) { + min = element; + minValue = value; + defined = true; + } + } + } else { + for (const value of values) { + if (defined + ? compare(value, min) < 0 + : compare(value, value) === 0) { min = value; - while (++i < n) { // Compare the remaining values. - if ((value = valueof(values[i], i, values)) != null && min > value) { - min = value; - } - } + defined = true; } } } - return min; } -function permute(array, indexes) { - var i = indexes.length, permutes = new Array(i); - while (i--) permutes[i] = array[indexes[i]]; - return permutes; +function leastIndex(values, compare = ascending$3) { + if (compare.length === 1) return minIndex(values, compare); + let minValue; + let min = -1; + let index = -1; + for (const value of values) { + ++index; + if (min < 0 + ? compare(value, value) === 0 + : compare(value, minValue) < 0) { + minValue = value; + min = index; + } + } + return min; } -function scan(values, compare) { - if (!(n = values.length)) return; - var n, - i = 0, - j = 0, - xi, - xj = values[j]; - - if (compare == null) compare = ascending; - - while (++i < n) { - if (compare(xi = values[i], xj) < 0 || compare(xj, xj) !== 0) { - xj = xi, j = i; +function greatest(values, compare = ascending$3) { + let max; + let defined = false; + if (compare.length === 1) { + let maxValue; + for (const element of values) { + const value = compare(element); + if (defined + ? ascending$3(value, maxValue) > 0 + : ascending$3(value, value) === 0) { + max = element; + maxValue = value; + defined = true; + } + } + } else { + for (const value of values) { + if (defined + ? compare(value, max) > 0 + : compare(value, value) === 0) { + max = value; + defined = true; + } } } - - if (compare(xj, xj) === 0) return j; + return max; } -function shuffle(array, i0, i1) { - var m = (i1 == null ? array.length : i1) - (i0 = i0 == null ? 0 : +i0), - t, - i; - - while (m) { - i = Math.random() * m-- | 0; - t = array[m + i0]; - array[m + i0] = array[i + i0]; - array[i + i0] = t; +function greatestIndex(values, compare = ascending$3) { + if (compare.length === 1) return maxIndex(values, compare); + let maxValue; + let max = -1; + let index = -1; + for (const value of values) { + ++index; + if (max < 0 + ? compare(value, value) === 0 + : compare(value, maxValue) > 0) { + maxValue = value; + max = index; + } } + return max; +} - return array; +function scan(values, compare) { + const index = leastIndex(values, compare); + return index < 0 ? undefined : index; } -function sum(values, valueof) { - var n = values.length, - i = -1, - value, - sum = 0; +var shuffle$1 = shuffler(Math.random); - if (valueof == null) { - while (++i < n) { - if (value = +values[i]) sum += value; // Note: zero and null are equivalent. +function shuffler(random) { + return function shuffle(array, i0 = 0, i1 = array.length) { + let m = i1 - (i0 = +i0); + while (m) { + const i = random() * m-- | 0, t = array[m + i0]; + array[m + i0] = array[i + i0]; + array[i + i0] = t; } - } + return array; + }; +} - else { - while (++i < n) { - if (value = +valueof(values[i], i, values)) sum += value; +function sum$1(values, valueof) { + let sum = 0; + if (valueof === undefined) { + for (let value of values) { + if (value = +value) { + sum += value; + } + } + } else { + let index = -1; + for (let value of values) { + if (value = +valueof(value, ++index, values)) { + sum += value; + } } } - return sum; } function transpose(matrix) { if (!(n = matrix.length)) return []; - for (var i = -1, m = min(matrix, length), transpose = new Array(m); ++i < m;) { + for (var i = -1, m = min$2(matrix, length$2), transpose = new Array(m); ++i < m;) { for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n;) { row[j] = matrix[j][i]; } @@ -547,7 +970,7 @@ function transpose(matrix) { return transpose; } -function length(d) { +function length$2(d) { return d.length; } @@ -555,9 +978,139 @@ function zip() { return transpose(arguments); } -var slice$1 = Array.prototype.slice; +function every(values, test) { + if (typeof test !== "function") throw new TypeError("test is not a function"); + let index = -1; + for (const value of values) { + if (!test(value, ++index, values)) { + return false; + } + } + return true; +} + +function some(values, test) { + if (typeof test !== "function") throw new TypeError("test is not a function"); + let index = -1; + for (const value of values) { + if (test(value, ++index, values)) { + return true; + } + } + return false; +} + +function filter$1(values, test) { + if (typeof test !== "function") throw new TypeError("test is not a function"); + const array = []; + let index = -1; + for (const value of values) { + if (test(value, ++index, values)) { + array.push(value); + } + } + return array; +} + +function map$1(values, mapper) { + if (typeof values[Symbol.iterator] !== "function") throw new TypeError("values is not iterable"); + if (typeof mapper !== "function") throw new TypeError("mapper is not a function"); + return Array.from(values, (value, index) => mapper(value, index, values)); +} + +function reduce(values, reducer, value) { + if (typeof reducer !== "function") throw new TypeError("reducer is not a function"); + const iterator = values[Symbol.iterator](); + let done, next, index = -1; + if (arguments.length < 3) { + ({done, value} = iterator.next()); + if (done) return; + ++index; + } + while (({done, value: next} = iterator.next()), !done) { + value = reducer(value, next, ++index, values); + } + return value; +} + +function reverse$1(values) { + if (typeof values[Symbol.iterator] !== "function") throw new TypeError("values is not iterable"); + return Array.from(values).reverse(); +} + +function difference(values, ...others) { + values = new Set(values); + for (const other of others) { + for (const value of other) { + values.delete(value); + } + } + return values; +} + +function disjoint(values, other) { + const iterator = other[Symbol.iterator](), set = new Set(); + for (const v of values) { + if (set.has(v)) return false; + let value, done; + while (({value, done} = iterator.next())) { + if (done) break; + if (Object.is(v, value)) return false; + set.add(value); + } + } + return true; +} + +function set$2(values) { + return values instanceof Set ? values : new Set(values); +} + +function intersection(values, ...others) { + values = new Set(values); + others = others.map(set$2); + out: for (const value of values) { + for (const other of others) { + if (!other.has(value)) { + values.delete(value); + continue out; + } + } + } + return values; +} + +function superset(values, other) { + const iterator = values[Symbol.iterator](), set = new Set(); + for (const o of other) { + if (set.has(o)) continue; + let value, done; + while (({value, done} = iterator.next())) { + if (done) return false; + set.add(value); + if (Object.is(o, value)) break; + } + } + return true; +} + +function subset(values, other) { + return superset(other, values); +} + +function union(...others) { + const set = new Set(); + for (const other of others) { + for (const o of other) { + set.add(o); + } + } + return set; +} + +var slice$3 = Array.prototype.slice; -function identity$1(x) { +function identity$8(x) { return x; } @@ -565,28 +1118,24 @@ var top = 1, right = 2, bottom = 3, left = 4, - epsilon = 1e-6; + epsilon$5 = 1e-6; function translateX(x) { - return "translate(" + (x + 0.5) + ",0)"; + return "translate(" + x + ",0)"; } function translateY(y) { - return "translate(0," + (y + 0.5) + ")"; + return "translate(0," + y + ")"; } -function number$1(scale) { - return function(d) { - return +scale(d); - }; +function number$2(scale) { + return d => +scale(d); } -function center(scale) { - var offset = Math.max(0, scale.bandwidth() - 1) / 2; // Adjust for 0.5px offset. +function center$1(scale, offset) { + offset = Math.max(0, scale.bandwidth() - offset * 2) / 2; if (scale.round()) offset = Math.round(offset); - return function(d) { - return +scale(d) + offset; - }; + return d => +scale(d) + offset; } function entering() { @@ -600,18 +1149,19 @@ function axis(orient, scale) { tickSizeInner = 6, tickSizeOuter = 6, tickPadding = 3, + offset = typeof window !== "undefined" && window.devicePixelRatio > 1 ? 0 : 0.5, k = orient === top || orient === left ? -1 : 1, x = orient === left || orient === right ? "x" : "y", transform = orient === top || orient === bottom ? translateX : translateY; function axis(context) { var values = tickValues == null ? (scale.ticks ? scale.ticks.apply(scale, tickArguments) : scale.domain()) : tickValues, - format = tickFormat == null ? (scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments) : identity$1) : tickFormat, + format = tickFormat == null ? (scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments) : identity$8) : tickFormat, spacing = Math.max(tickSizeInner, 0) + tickPadding, range = scale.range(), - range0 = +range[0] + 0.5, - range1 = +range[range.length - 1] + 0.5, - position = (scale.bandwidth ? center : number$1)(scale.copy()), + range0 = +range[0] + offset, + range1 = +range[range.length - 1] + offset, + position = (scale.bandwidth ? center$1 : number$2)(scale.copy(), offset), selection = context.selection ? context.selection() : context, path = selection.selectAll(".domain").data([null]), tick = selection.selectAll(".tick").data(values, scale).order(), @@ -642,24 +1192,24 @@ function axis(orient, scale) { text = text.transition(context); tickExit = tickExit.transition(context) - .attr("opacity", epsilon) - .attr("transform", function(d) { return isFinite(d = position(d)) ? transform(d) : this.getAttribute("transform"); }); + .attr("opacity", epsilon$5) + .attr("transform", function(d) { return isFinite(d = position(d)) ? transform(d + offset) : this.getAttribute("transform"); }); tickEnter - .attr("opacity", epsilon) - .attr("transform", function(d) { var p = this.parentNode.__axis; return transform(p && isFinite(p = p(d)) ? p : position(d)); }); + .attr("opacity", epsilon$5) + .attr("transform", function(d) { var p = this.parentNode.__axis; return transform((p && isFinite(p = p(d)) ? p : position(d)) + offset); }); } tickExit.remove(); path - .attr("d", orient === left || orient == right - ? (tickSizeOuter ? "M" + k * tickSizeOuter + "," + range0 + "H0.5V" + range1 + "H" + k * tickSizeOuter : "M0.5," + range0 + "V" + range1) - : (tickSizeOuter ? "M" + range0 + "," + k * tickSizeOuter + "V0.5H" + range1 + "V" + k * tickSizeOuter : "M" + range0 + ",0.5H" + range1)); + .attr("d", orient === left || orient === right + ? (tickSizeOuter ? "M" + k * tickSizeOuter + "," + range0 + "H" + offset + "V" + range1 + "H" + k * tickSizeOuter : "M" + offset + "," + range0 + "V" + range1) + : (tickSizeOuter ? "M" + range0 + "," + k * tickSizeOuter + "V" + offset + "H" + range1 + "V" + k * tickSizeOuter : "M" + range0 + "," + offset + "H" + range1)); tick .attr("opacity", 1) - .attr("transform", function(d) { return transform(position(d)); }); + .attr("transform", function(d) { return transform(position(d) + offset); }); line .attr(x + "2", k * tickSizeInner); @@ -683,15 +1233,15 @@ function axis(orient, scale) { }; axis.ticks = function() { - return tickArguments = slice$1.call(arguments), axis; + return tickArguments = slice$3.call(arguments), axis; }; axis.tickArguments = function(_) { - return arguments.length ? (tickArguments = _ == null ? [] : slice$1.call(_), axis) : tickArguments.slice(); + return arguments.length ? (tickArguments = _ == null ? [] : slice$3.call(_), axis) : tickArguments.slice(); }; axis.tickValues = function(_) { - return arguments.length ? (tickValues = _ == null ? null : slice$1.call(_), axis) : tickValues && tickValues.slice(); + return arguments.length ? (tickValues = _ == null ? null : slice$3.call(_), axis) : tickValues && tickValues.slice(); }; axis.tickFormat = function(_) { @@ -714,6 +1264,10 @@ function axis(orient, scale) { return arguments.length ? (tickPadding = +_, axis) : tickPadding; }; + axis.offset = function(_) { + return arguments.length ? (offset = +_, axis) : offset; + }; + return axis; } @@ -733,7 +1287,7 @@ function axisLeft(scale) { return axis(left, scale); } -var noop = {value: function() {}}; +var noop$3 = {value: () => {}}; function dispatch() { for (var i = 0, n = arguments.length, _ = {}, t; i < n; ++i) { @@ -747,7 +1301,7 @@ function Dispatch(_) { this._ = _; } -function parseTypenames(typenames, types) { +function parseTypenames$1(typenames, types) { return typenames.trim().split(/^|\s+/).map(function(t) { var name = "", i = t.indexOf("."); if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i); @@ -760,14 +1314,14 @@ Dispatch.prototype = dispatch.prototype = { constructor: Dispatch, on: function(typename, callback) { var _ = this._, - T = parseTypenames(typename + "", _), + T = parseTypenames$1(typename + "", _), t, i = -1, n = T.length; // If no callback was specified, return the callback of the given type and name. if (arguments.length < 2) { - while (++i < n) if ((t = (typename = T[i]).type) && (t = get(_[t], typename.name))) return t; + while (++i < n) if ((t = (typename = T[i]).type) && (t = get$1(_[t], typename.name))) return t; return; } @@ -775,8 +1329,8 @@ Dispatch.prototype = dispatch.prototype = { // Otherwise, if a null callback was specified, remove callbacks of the given name. if (callback != null && typeof callback !== "function") throw new Error("invalid callback: " + callback); while (++i < n) { - if (t = (typename = T[i]).type) _[t] = set(_[t], typename.name, callback); - else if (callback == null) for (t in _) _[t] = set(_[t], typename.name, null); + if (t = (typename = T[i]).type) _[t] = set$1(_[t], typename.name, callback); + else if (callback == null) for (t in _) _[t] = set$1(_[t], typename.name, null); } return this; @@ -797,7 +1351,7 @@ Dispatch.prototype = dispatch.prototype = { } }; -function get(type, name) { +function get$1(type, name) { for (var i = 0, n = type.length, c; i < n; ++i) { if ((c = type[i]).name === name) { return c.value; @@ -805,10 +1359,10 @@ function get(type, name) { } } -function set(type, name, callback) { +function set$1(type, name, callback) { for (var i = 0, n = type.length; i < n; ++i) { if (type[i].name === name) { - type[i] = noop, type = type.slice(0, i).concat(type.slice(i + 1)); + type[i] = noop$3, type = type.slice(0, i).concat(type.slice(i + 1)); break; } } @@ -829,7 +1383,7 @@ var namespaces = { function namespace(name) { var prefix = name += "", i = prefix.indexOf(":"); if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1); - return namespaces.hasOwnProperty(prefix) ? {space: namespaces[prefix], local: name} : name; + return namespaces.hasOwnProperty(prefix) ? {space: namespaces[prefix], local: name} : name; // eslint-disable-line no-prototype-builtins } function creatorInherit(name) { @@ -855,10 +1409,10 @@ function creator(name) { : creatorInherit)(fullname); } -function none() {} +function none$2() {} function selector(selector) { - return selector == null ? none : function() { + return selector == null ? none$2 : function() { return this.querySelector(selector); }; } @@ -875,21 +1429,35 @@ function selection_select(select) { } } - return new Selection(subgroups, this._parents); + return new Selection$1(subgroups, this._parents); +} + +function array$4(x) { + return typeof x === "object" && "length" in x + ? x // Array, TypedArray, NodeList, array-like + : Array.from(x); // Map, Set, iterable, string, or anything else } -function empty() { +function empty$1() { return []; } function selectorAll(selector) { - return selector == null ? empty : function() { + return selector == null ? empty$1 : function() { return this.querySelectorAll(selector); }; } +function arrayAll(select) { + return function() { + var group = select.apply(this, arguments); + return group == null ? [] : array$4(group); + }; +} + function selection_selectAll(select) { - if (typeof select !== "function") select = selectorAll(select); + if (typeof select === "function") select = arrayAll(select); + else select = selectorAll(select); for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) { for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) { @@ -900,7 +1468,7 @@ function selection_selectAll(select) { } } - return new Selection(subgroups, parents); + return new Selection$1(subgroups, parents); } function matcher(selector) { @@ -909,6 +1477,46 @@ function matcher(selector) { }; } +function childMatcher(selector) { + return function(node) { + return node.matches(selector); + }; +} + +var find$1 = Array.prototype.find; + +function childFind(match) { + return function() { + return find$1.call(this.children, match); + }; +} + +function childFirst() { + return this.firstElementChild; +} + +function selection_selectChild(match) { + return this.select(match == null ? childFirst + : childFind(typeof match === "function" ? match : childMatcher(match))); +} + +var filter = Array.prototype.filter; + +function children() { + return this.children; +} + +function childrenFilter(match) { + return function() { + return filter.call(this.children, match); + }; +} + +function selection_selectChildren(match) { + return this.selectAll(match == null ? children + : childrenFilter(typeof match === "function" ? match : childMatcher(match))); +} + function selection_filter(match) { if (typeof match !== "function") match = matcher(match); @@ -920,7 +1528,7 @@ function selection_filter(match) { } } - return new Selection(subgroups, this._parents); + return new Selection$1(subgroups, this._parents); } function sparse(update) { @@ -928,7 +1536,7 @@ function sparse(update) { } function selection_enter() { - return new Selection(this._enter || this._groups.map(sparse), this._parents); + return new Selection$1(this._enter || this._groups.map(sparse), this._parents); } function EnterNode(parent, datum) { @@ -947,14 +1555,12 @@ EnterNode.prototype = { querySelectorAll: function(selector) { return this._parent.querySelectorAll(selector); } }; -function constant$1(x) { +function constant$a(x) { return function() { return x; }; } -var keyPrefix = "$"; // Protect against keys like “__proto__”. - function bindIndex(parent, group, enter, update, exit, data) { var i = 0, node, @@ -984,7 +1590,7 @@ function bindIndex(parent, group, enter, update, exit, data) { function bindKey(parent, group, enter, update, exit, data, key) { var i, node, - nodeByKeyValue = {}, + nodeByKeyValue = new Map, groupLength = group.length, dataLength = data.length, keyValues = new Array(groupLength), @@ -994,11 +1600,11 @@ function bindKey(parent, group, enter, update, exit, data, key) { // If multiple nodes have the same key, the duplicates are added to exit. for (i = 0; i < groupLength; ++i) { if (node = group[i]) { - keyValues[i] = keyValue = keyPrefix + key.call(node, node.__data__, i, group); - if (keyValue in nodeByKeyValue) { + keyValues[i] = keyValue = key.call(node, node.__data__, i, group) + ""; + if (nodeByKeyValue.has(keyValue)) { exit[i] = node; } else { - nodeByKeyValue[keyValue] = node; + nodeByKeyValue.set(keyValue, node); } } } @@ -1007,11 +1613,11 @@ function bindKey(parent, group, enter, update, exit, data, key) { // If there a node associated with this key, join and add it to update. // If there is not (or the key is a duplicate), add it to enter. for (i = 0; i < dataLength; ++i) { - keyValue = keyPrefix + key.call(parent, data[i], i, data); - if (node = nodeByKeyValue[keyValue]) { + keyValue = key.call(parent, data[i], i, data) + ""; + if (node = nodeByKeyValue.get(keyValue)) { update[i] = node; node.__data__ = data[i]; - nodeByKeyValue[keyValue] = null; + nodeByKeyValue.delete(keyValue); } else { enter[i] = new EnterNode(parent, data[i]); } @@ -1019,30 +1625,30 @@ function bindKey(parent, group, enter, update, exit, data, key) { // Add any remaining nodes that were not bound to data to exit. for (i = 0; i < groupLength; ++i) { - if ((node = group[i]) && (nodeByKeyValue[keyValues[i]] === node)) { + if ((node = group[i]) && (nodeByKeyValue.get(keyValues[i]) === node)) { exit[i] = node; } } } +function datum(node) { + return node.__data__; +} + function selection_data(value, key) { - if (!value) { - data = new Array(this.size()), j = -1; - this.each(function(d) { data[++j] = d; }); - return data; - } + if (!arguments.length) return Array.from(this, datum); var bind = key ? bindKey : bindIndex, parents = this._parents, groups = this._groups; - if (typeof value !== "function") value = constant$1(value); + if (typeof value !== "function") value = constant$a(value); for (var m = groups.length, update = new Array(m), enter = new Array(m), exit = new Array(m), j = 0; j < m; ++j) { var parent = parents[j], group = groups[j], groupLength = group.length, - data = value.call(parent, parent && parent.__data__, j, parents), + data = array$4(value.call(parent, parent && parent.__data__, j, parents)), dataLength = data.length, enterGroup = enter[j] = new Array(dataLength), updateGroup = update[j] = new Array(dataLength), @@ -1062,14 +1668,14 @@ function selection_data(value, key) { } } - update = new Selection(update, parents); + update = new Selection$1(update, parents); update._enter = enter; update._exit = exit; return update; } function selection_exit() { - return new Selection(this._exit || this._groups.map(sparse), this._parents); + return new Selection$1(this._exit || this._groups.map(sparse), this._parents); } function selection_join(onenter, onupdate, onexit) { @@ -1081,6 +1687,7 @@ function selection_join(onenter, onupdate, onexit) { } function selection_merge(selection) { + if (!(selection instanceof Selection$1)) throw new Error("invalid merge"); for (var groups0 = this._groups, groups1 = selection._groups, m0 = groups0.length, m1 = groups1.length, m = Math.min(m0, m1), merges = new Array(m0), j = 0; j < m; ++j) { for (var group0 = groups0[j], group1 = groups1[j], n = group0.length, merge = merges[j] = new Array(n), node, i = 0; i < n; ++i) { @@ -1094,7 +1701,7 @@ function selection_merge(selection) { merges[j] = groups0[j]; } - return new Selection(merges, this._parents); + return new Selection$1(merges, this._parents); } function selection_order() { @@ -1112,7 +1719,7 @@ function selection_order() { } function selection_sort(compare) { - if (!compare) compare = ascending$1; + if (!compare) compare = ascending$2; function compareNode(a, b) { return a && b ? compare(a.__data__, b.__data__) : !a - !b; @@ -1127,10 +1734,10 @@ function selection_sort(compare) { sortgroup.sort(compareNode); } - return new Selection(sortgroups, this._parents).order(); + return new Selection$1(sortgroups, this._parents).order(); } -function ascending$1(a, b) { +function ascending$2(a, b) { return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN; } @@ -1142,9 +1749,7 @@ function selection_call() { } function selection_nodes() { - var nodes = new Array(this.size()), i = -1; - this.each(function() { nodes[++i] = this; }); - return nodes; + return Array.from(this); } function selection_node() { @@ -1160,8 +1765,8 @@ function selection_node() { } function selection_size() { - var size = 0; - this.each(function() { ++size; }); + let size = 0; + for (const node of this) ++size; // eslint-disable-line no-unused-vars return size; } @@ -1180,31 +1785,31 @@ function selection_each(callback) { return this; } -function attrRemove(name) { +function attrRemove$1(name) { return function() { this.removeAttribute(name); }; } -function attrRemoveNS(fullname) { +function attrRemoveNS$1(fullname) { return function() { this.removeAttributeNS(fullname.space, fullname.local); }; } -function attrConstant(name, value) { +function attrConstant$1(name, value) { return function() { this.setAttribute(name, value); }; } -function attrConstantNS(fullname, value) { +function attrConstantNS$1(fullname, value) { return function() { this.setAttributeNS(fullname.space, fullname.local, value); }; } -function attrFunction(name, value) { +function attrFunction$1(name, value) { return function() { var v = value.apply(this, arguments); if (v == null) this.removeAttribute(name); @@ -1212,7 +1817,7 @@ function attrFunction(name, value) { }; } -function attrFunctionNS(fullname, value) { +function attrFunctionNS$1(fullname, value) { return function() { var v = value.apply(this, arguments); if (v == null) this.removeAttributeNS(fullname.space, fullname.local); @@ -1231,9 +1836,9 @@ function selection_attr(name, value) { } return this.each((value == null - ? (fullname.local ? attrRemoveNS : attrRemove) : (typeof value === "function" - ? (fullname.local ? attrFunctionNS : attrFunction) - : (fullname.local ? attrConstantNS : attrConstant)))(fullname, value)); + ? (fullname.local ? attrRemoveNS$1 : attrRemove$1) : (typeof value === "function" + ? (fullname.local ? attrFunctionNS$1 : attrFunction$1) + : (fullname.local ? attrConstantNS$1 : attrConstant$1)))(fullname, value)); } function defaultView(node) { @@ -1242,19 +1847,19 @@ function defaultView(node) { || node.defaultView; // node is a Document } -function styleRemove(name) { +function styleRemove$1(name) { return function() { this.style.removeProperty(name); }; } -function styleConstant(name, value, priority) { +function styleConstant$1(name, value, priority) { return function() { this.style.setProperty(name, value, priority); }; } -function styleFunction(name, value, priority) { +function styleFunction$1(name, value, priority) { return function() { var v = value.apply(this, arguments); if (v == null) this.style.removeProperty(name); @@ -1265,9 +1870,9 @@ function styleFunction(name, value, priority) { function selection_style(name, value, priority) { return arguments.length > 1 ? this.each((value == null - ? styleRemove : typeof value === "function" - ? styleFunction - : styleConstant)(name, value, priority == null ? "" : priority)) + ? styleRemove$1 : typeof value === "function" + ? styleFunction$1 + : styleConstant$1)(name, value, priority == null ? "" : priority)) : styleValue(this.node(), name); } @@ -1385,13 +1990,13 @@ function textRemove() { this.textContent = ""; } -function textConstant(value) { +function textConstant$1(value) { return function() { this.textContent = value; }; } -function textFunction(value) { +function textFunction$1(value) { return function() { var v = value.apply(this, arguments); this.textContent = v == null ? "" : v; @@ -1402,8 +2007,8 @@ function selection_text(value) { return arguments.length ? this.each(value == null ? textRemove : (typeof value === "function" - ? textFunction - : textConstant)(value)) + ? textFunction$1 + : textConstant$1)(value)) : this.node().textContent; } @@ -1497,40 +2102,13 @@ function selection_datum(value) { : this.node().__data__; } -var filterEvents = {}; - -exports.event = null; - -if (typeof document !== "undefined") { - var element = document.documentElement; - if (!("onmouseenter" in element)) { - filterEvents = {mouseenter: "mouseover", mouseleave: "mouseout"}; - } -} - -function filterContextListener(listener, index, group) { - listener = contextListener(listener, index, group); +function contextListener(listener) { return function(event) { - var related = event.relatedTarget; - if (!related || (related !== this && !(related.compareDocumentPosition(this) & 8))) { - listener.call(this, event); - } - }; -} - -function contextListener(listener, index, group) { - return function(event1) { - var event0 = exports.event; // Events can be reentrant (e.g., focus). - exports.event = event1; - try { - listener.call(this, this.__data__, index, group); - } finally { - exports.event = event0; - } + listener.call(this, event, this.__data__); }; } -function parseTypenames$1(typenames) { +function parseTypenames(typenames) { return typenames.trim().split(/^|\s+/).map(function(t) { var name = "", i = t.indexOf("."); if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i); @@ -1544,7 +2122,7 @@ function onRemove(typename) { if (!on) return; for (var j = 0, i = -1, m = on.length, o; j < m; ++j) { if (o = on[j], (!typename.type || o.type === typename.type) && o.name === typename.name) { - this.removeEventListener(o.type, o.listener, o.capture); + this.removeEventListener(o.type, o.listener, o.options); } else { on[++i] = o; } @@ -1554,27 +2132,26 @@ function onRemove(typename) { }; } -function onAdd(typename, value, capture) { - var wrap = filterEvents.hasOwnProperty(typename.type) ? filterContextListener : contextListener; - return function(d, i, group) { - var on = this.__on, o, listener = wrap(value, i, group); +function onAdd(typename, value, options) { + return function() { + var on = this.__on, o, listener = contextListener(value); if (on) for (var j = 0, m = on.length; j < m; ++j) { if ((o = on[j]).type === typename.type && o.name === typename.name) { - this.removeEventListener(o.type, o.listener, o.capture); - this.addEventListener(o.type, o.listener = listener, o.capture = capture); + this.removeEventListener(o.type, o.listener, o.options); + this.addEventListener(o.type, o.listener = listener, o.options = options); o.value = value; return; } } - this.addEventListener(typename.type, listener, capture); - o = {type: typename.type, name: typename.name, value: value, listener: listener, capture: capture}; + this.addEventListener(typename.type, listener, options); + o = {type: typename.type, name: typename.name, value: value, listener: listener, options: options}; if (!on) this.__on = [o]; else on.push(o); }; } -function selection_on(typename, value, capture) { - var typenames = parseTypenames$1(typename + ""), i, n = typenames.length, t; +function selection_on(typename, value, options) { + var typenames = parseTypenames(typename + ""), i, n = typenames.length, t; if (arguments.length < 2) { var on = this.node().__on; @@ -1589,22 +2166,10 @@ function selection_on(typename, value, capture) { } on = value ? onAdd : onRemove; - if (capture == null) capture = false; - for (i = 0; i < n; ++i) this.each(on(typenames[i], value, capture)); + for (i = 0; i < n; ++i) this.each(on(typenames[i], value, options)); return this; } -function customEvent(event1, listener, that, args) { - var event0 = exports.event; - event1.sourceEvent = exports.event; - exports.event = event1; - try { - return listener.apply(that, args); - } finally { - exports.event = event0; - } -} - function dispatchEvent(node, type, params) { var window = defaultView(node), event = window.CustomEvent; @@ -1638,27 +2203,42 @@ function selection_dispatch(type, params) { : dispatchConstant)(type, params)); } -var root = [null]; +function* selection_iterator() { + for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) { + for (var group = groups[j], i = 0, n = group.length, node; i < n; ++i) { + if (node = group[i]) yield node; + } + } +} + +var root$1 = [null]; -function Selection(groups, parents) { +function Selection$1(groups, parents) { this._groups = groups; this._parents = parents; } function selection() { - return new Selection([[document.documentElement]], root); + return new Selection$1([[document.documentElement]], root$1); } -Selection.prototype = selection.prototype = { - constructor: Selection, +function selection_selection() { + return this; +} + +Selection$1.prototype = selection.prototype = { + constructor: Selection$1, select: selection_select, selectAll: selection_selectAll, + selectChild: selection_selectChild, + selectChildren: selection_selectChildren, filter: selection_filter, data: selection_data, enter: selection_enter, exit: selection_exit, join: selection_join, merge: selection_merge, + selection: selection_selection, order: selection_order, sort: selection_sort, call: selection_call, @@ -1681,22 +2261,23 @@ Selection.prototype = selection.prototype = { clone: selection_clone, datum: selection_datum, on: selection_on, - dispatch: selection_dispatch + dispatch: selection_dispatch, + [Symbol.iterator]: selection_iterator }; function select(selector) { return typeof selector === "string" - ? new Selection([[document.querySelector(selector)]], [document.documentElement]) - : new Selection([[selector]], root); + ? new Selection$1([[document.querySelector(selector)]], [document.documentElement]) + : new Selection$1([[selector]], root$1); } -function create(name) { +function create$1(name) { return select(creator(name).call(document.documentElement)); } var nextId = 0; -function local() { +function local$1() { return new Local; } @@ -1704,7 +2285,7 @@ function Local() { this._ = "@" + (++nextId).toString(36); } -Local.prototype = local.prototype = { +Local.prototype = local$1.prototype = { constructor: Local, get: function(node) { var id = this._; @@ -1722,74 +2303,60 @@ Local.prototype = local.prototype = { } }; -function sourceEvent() { - var current = exports.event, source; - while (source = current.sourceEvent) current = source; - return current; +function sourceEvent(event) { + let sourceEvent; + while (sourceEvent = event.sourceEvent) event = sourceEvent; + return event; } -function point(node, event) { - var svg = node.ownerSVGElement || node; - - if (svg.createSVGPoint) { - var point = svg.createSVGPoint(); - point.x = event.clientX, point.y = event.clientY; - point = point.matrixTransform(node.getScreenCTM().inverse()); - return [point.x, point.y]; +function pointer(event, node) { + event = sourceEvent(event); + if (node === undefined) node = event.currentTarget; + if (node) { + var svg = node.ownerSVGElement || node; + if (svg.createSVGPoint) { + var point = svg.createSVGPoint(); + point.x = event.clientX, point.y = event.clientY; + point = point.matrixTransform(node.getScreenCTM().inverse()); + return [point.x, point.y]; + } + if (node.getBoundingClientRect) { + var rect = node.getBoundingClientRect(); + return [event.clientX - rect.left - node.clientLeft, event.clientY - rect.top - node.clientTop]; + } } - - var rect = node.getBoundingClientRect(); - return [event.clientX - rect.left - node.clientLeft, event.clientY - rect.top - node.clientTop]; + return [event.pageX, event.pageY]; } -function mouse(node) { - var event = sourceEvent(); - if (event.changedTouches) event = event.changedTouches[0]; - return point(node, event); +function pointers(events, node) { + if (events.target) { // i.e., instanceof Event, not TouchList or iterable + events = sourceEvent(events); + if (node === undefined) node = events.currentTarget; + events = events.touches || [events]; + } + return Array.from(events, event => pointer(event, node)); } function selectAll(selector) { return typeof selector === "string" - ? new Selection([document.querySelectorAll(selector)], [document.documentElement]) - : new Selection([selector == null ? [] : selector], root); -} - -function touch(node, touches, identifier) { - if (arguments.length < 3) identifier = touches, touches = sourceEvent().changedTouches; - - for (var i = 0, n = touches ? touches.length : 0, touch; i < n; ++i) { - if ((touch = touches[i]).identifier === identifier) { - return point(node, touch); - } - } - - return null; -} - -function touches(node, touches) { - if (touches == null) touches = sourceEvent().touches; - - for (var i = 0, n = touches ? touches.length : 0, points = new Array(n); i < n; ++i) { - points[i] = point(node, touches[i]); - } - - return points; + ? new Selection$1([document.querySelectorAll(selector)], [document.documentElement]) + : new Selection$1([selector == null ? [] : array$4(selector)], root$1); } -function nopropagation() { - exports.event.stopImmediatePropagation(); +function nopropagation$2(event) { + event.stopImmediatePropagation(); } -function noevent() { - exports.event.preventDefault(); - exports.event.stopImmediatePropagation(); +function noevent$2(event) { + event.preventDefault(); + event.stopImmediatePropagation(); } function dragDisable(view) { var root = view.document.documentElement, - selection = select(view).on("dragstart.drag", noevent, true); + selection = select(view).on("dragstart.drag", noevent$2, true); if ("onselectstart" in root) { - selection.on("selectstart.drag", noevent, true); + selection.on("selectstart.drag", noevent$2, true); } else { root.__noselect = root.style.MozUserSelect; root.style.MozUserSelect = "none"; @@ -1800,7 +2367,7 @@ function yesdrag(view, noclick) { var root = view.document.documentElement, selection = select(view).on("dragstart.drag", null); if (noclick) { - selection.on("click.drag", noevent, true); + selection.on("click.drag", noevent$2, true); setTimeout(function() { selection.on("click.drag", null); }, 0); } if ("onselectstart" in root) { @@ -1811,23 +2378,30 @@ function yesdrag(view, noclick) { } } -function constant$2(x) { - return function() { - return x; - }; -} - -function DragEvent(target, type, subject, id, active, x, y, dx, dy, dispatch) { - this.target = target; - this.type = type; - this.subject = subject; - this.identifier = id; - this.active = active; - this.x = x; - this.y = y; - this.dx = dx; - this.dy = dy; - this._ = dispatch; +var constant$9 = x => () => x; + +function DragEvent(type, { + sourceEvent, + subject, + target, + identifier, + active, + x, y, dx, dy, + dispatch +}) { + Object.defineProperties(this, { + type: {value: type, enumerable: true, configurable: true}, + sourceEvent: {value: sourceEvent, enumerable: true, configurable: true}, + subject: {value: subject, enumerable: true, configurable: true}, + target: {value: target, enumerable: true, configurable: true}, + identifier: {value: identifier, enumerable: true, configurable: true}, + active: {value: active, enumerable: true, configurable: true}, + x: {value: x, enumerable: true, configurable: true}, + y: {value: y, enumerable: true, configurable: true}, + dx: {value: dx, enumerable: true, configurable: true}, + dy: {value: dy, enumerable: true, configurable: true}, + _: {value: dispatch} + }); } DragEvent.prototype.on = function() { @@ -1836,27 +2410,27 @@ DragEvent.prototype.on = function() { }; // Ignore right-click, since that should open the context menu. -function defaultFilter() { - return !exports.event.ctrlKey && !exports.event.button; +function defaultFilter$2(event) { + return !event.ctrlKey && !event.button; } function defaultContainer() { return this.parentNode; } -function defaultSubject(d) { - return d == null ? {x: exports.event.x, y: exports.event.y} : d; +function defaultSubject(event, d) { + return d == null ? {x: event.x, y: event.y} : d; } -function defaultTouchable() { +function defaultTouchable$2() { return navigator.maxTouchPoints || ("ontouchstart" in this); } function drag() { - var filter = defaultFilter, + var filter = defaultFilter$2, container = defaultContainer, subject = defaultSubject, - touchable = defaultTouchable, + touchable = defaultTouchable$2, gestures = {}, listeners = dispatch("start", "drag", "end"), active = 0, @@ -1877,111 +2451,136 @@ function drag() { .style("-webkit-tap-highlight-color", "rgba(0,0,0,0)"); } - function mousedowned() { - if (touchending || !filter.apply(this, arguments)) return; - var gesture = beforestart("mouse", container.apply(this, arguments), mouse, this, arguments); + function mousedowned(event, d) { + if (touchending || !filter.call(this, event, d)) return; + var gesture = beforestart(this, container.call(this, event, d), event, d, "mouse"); if (!gesture) return; - select(exports.event.view).on("mousemove.drag", mousemoved, true).on("mouseup.drag", mouseupped, true); - dragDisable(exports.event.view); - nopropagation(); + select(event.view).on("mousemove.drag", mousemoved, true).on("mouseup.drag", mouseupped, true); + dragDisable(event.view); + nopropagation$2(event); mousemoving = false; - mousedownx = exports.event.clientX; - mousedowny = exports.event.clientY; - gesture("start"); + mousedownx = event.clientX; + mousedowny = event.clientY; + gesture("start", event); } - function mousemoved() { - noevent(); + function mousemoved(event) { + noevent$2(event); if (!mousemoving) { - var dx = exports.event.clientX - mousedownx, dy = exports.event.clientY - mousedowny; + var dx = event.clientX - mousedownx, dy = event.clientY - mousedowny; mousemoving = dx * dx + dy * dy > clickDistance2; } - gestures.mouse("drag"); + gestures.mouse("drag", event); } - function mouseupped() { - select(exports.event.view).on("mousemove.drag mouseup.drag", null); - yesdrag(exports.event.view, mousemoving); - noevent(); - gestures.mouse("end"); + function mouseupped(event) { + select(event.view).on("mousemove.drag mouseup.drag", null); + yesdrag(event.view, mousemoving); + noevent$2(event); + gestures.mouse("end", event); } - function touchstarted() { - if (!filter.apply(this, arguments)) return; - var touches = exports.event.changedTouches, - c = container.apply(this, arguments), + function touchstarted(event, d) { + if (!filter.call(this, event, d)) return; + var touches = event.changedTouches, + c = container.call(this, event, d), n = touches.length, i, gesture; for (i = 0; i < n; ++i) { - if (gesture = beforestart(touches[i].identifier, c, touch, this, arguments)) { - nopropagation(); - gesture("start"); + if (gesture = beforestart(this, c, event, d, touches[i].identifier, touches[i])) { + nopropagation$2(event); + gesture("start", event, touches[i]); } } } - function touchmoved() { - var touches = exports.event.changedTouches, + function touchmoved(event) { + var touches = event.changedTouches, n = touches.length, i, gesture; for (i = 0; i < n; ++i) { if (gesture = gestures[touches[i].identifier]) { - noevent(); - gesture("drag"); + noevent$2(event); + gesture("drag", event, touches[i]); } } } - function touchended() { - var touches = exports.event.changedTouches, + function touchended(event) { + var touches = event.changedTouches, n = touches.length, i, gesture; if (touchending) clearTimeout(touchending); touchending = setTimeout(function() { touchending = null; }, 500); // Ghost clicks are delayed! for (i = 0; i < n; ++i) { if (gesture = gestures[touches[i].identifier]) { - nopropagation(); - gesture("end"); + nopropagation$2(event); + gesture("end", event, touches[i]); } } } - function beforestart(id, container, point, that, args) { - var p = point(container, id), s, dx, dy, - sublisteners = listeners.copy(); + function beforestart(that, container, event, d, identifier, touch) { + var dispatch = listeners.copy(), + p = pointer(touch || event, container), dx, dy, + s; - if (!customEvent(new DragEvent(drag, "beforestart", s, id, active, p[0], p[1], 0, 0, sublisteners), function() { - if ((exports.event.subject = s = subject.apply(that, args)) == null) return false; - dx = s.x - p[0] || 0; - dy = s.y - p[1] || 0; - return true; - })) return; + if ((s = subject.call(that, new DragEvent("beforestart", { + sourceEvent: event, + target: drag, + identifier, + active, + x: p[0], + y: p[1], + dx: 0, + dy: 0, + dispatch + }), d)) == null) return; - return function gesture(type) { + dx = s.x - p[0] || 0; + dy = s.y - p[1] || 0; + + return function gesture(type, event, touch) { var p0 = p, n; switch (type) { - case "start": gestures[id] = gesture, n = active++; break; - case "end": delete gestures[id], --active; // nobreak - case "drag": p = point(container, id), n = active; break; + case "start": gestures[identifier] = gesture, n = active++; break; + case "end": delete gestures[identifier], --active; // nobreak + case "drag": p = pointer(touch || event, container), n = active; break; } - customEvent(new DragEvent(drag, type, s, id, n, p[0] + dx, p[1] + dy, p[0] - p0[0], p[1] - p0[1], sublisteners), sublisteners.apply, sublisteners, [type, that, args]); + dispatch.call( + type, + that, + new DragEvent(type, { + sourceEvent: event, + subject: s, + target: drag, + identifier, + active: n, + x: p[0] + dx, + y: p[1] + dy, + dx: p[0] - p0[0], + dy: p[1] - p0[1], + dispatch + }), + d + ); }; } drag.filter = function(_) { - return arguments.length ? (filter = typeof _ === "function" ? _ : constant$2(!!_), drag) : filter; + return arguments.length ? (filter = typeof _ === "function" ? _ : constant$9(!!_), drag) : filter; }; drag.container = function(_) { - return arguments.length ? (container = typeof _ === "function" ? _ : constant$2(_), drag) : container; + return arguments.length ? (container = typeof _ === "function" ? _ : constant$9(_), drag) : container; }; drag.subject = function(_) { - return arguments.length ? (subject = typeof _ === "function" ? _ : constant$2(_), drag) : subject; + return arguments.length ? (subject = typeof _ === "function" ? _ : constant$9(_), drag) : subject; }; drag.touchable = function(_) { - return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$2(!!_), drag) : touchable; + return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$9(!!_), drag) : touchable; }; drag.on = function() { @@ -2321,7 +2920,7 @@ function hslConvert(o) { return new Hsl(h, s, l, o.opacity); } -function hsl(h, s, l, opacity) { +function hsl$2(h, s, l, opacity) { return arguments.length === 1 ? hslConvert(h) : new Hsl(h, s, l, opacity == null ? 1 : opacity); } @@ -2332,7 +2931,7 @@ function Hsl(h, s, l, opacity) { this.opacity = +opacity; } -define(Hsl, hsl, extend(Color, { +define(Hsl, hsl$2, extend(Color, { brighter: function(k) { k = k == null ? brighter : Math.pow(brighter, k); return new Hsl(this.h, this.s, this.l * k, this.opacity); @@ -2377,18 +2976,18 @@ function hsl2rgb(h, m1, m2) { : m1) * 255; } -var deg2rad = Math.PI / 180; -var rad2deg = 180 / Math.PI; +const radians$1 = Math.PI / 180; +const degrees$2 = 180 / Math.PI; // https://observablehq.com/@mbostock/lab-and-rgb -var K = 18, +const K = 18, Xn = 0.96422, Yn = 1, Zn = 0.82521, - t0 = 4 / 29, - t1 = 6 / 29, - t2 = 3 * t1 * t1, - t3 = t1 * t1 * t1; + t0$1 = 4 / 29, + t1$1 = 6 / 29, + t2 = 3 * t1$1 * t1$1, + t3 = t1$1 * t1$1 * t1$1; function labConvert(o) { if (o instanceof Lab) return new Lab(o.l, o.a, o.b, o.opacity); @@ -2409,7 +3008,7 @@ function gray(l, opacity) { return new Lab(l, 0, 0, opacity == null ? 1 : opacity); } -function lab(l, a, b, opacity) { +function lab$1(l, a, b, opacity) { return arguments.length === 1 ? labConvert(l) : new Lab(l, a, b, opacity == null ? 1 : opacity); } @@ -2420,7 +3019,7 @@ function Lab(l, a, b, opacity) { this.opacity = +opacity; } -define(Lab, lab, extend(Color, { +define(Lab, lab$1, extend(Color, { brighter: function(k) { return new Lab(this.l + K * (k == null ? 1 : k), this.a, this.b, this.opacity); }, @@ -2444,11 +3043,11 @@ define(Lab, lab, extend(Color, { })); function xyz2lab(t) { - return t > t3 ? Math.pow(t, 1 / 3) : t / t2 + t0; + return t > t3 ? Math.pow(t, 1 / 3) : t / t2 + t0$1; } function lab2xyz(t) { - return t > t1 ? t * t * t : t2 * (t - t0); + return t > t1$1 ? t * t * t : t2 * (t - t0$1); } function lrgb2rgb(x) { @@ -2463,7 +3062,7 @@ function hclConvert(o) { if (o instanceof Hcl) return new Hcl(o.h, o.c, o.l, o.opacity); if (!(o instanceof Lab)) o = labConvert(o); if (o.a === 0 && o.b === 0) return new Hcl(NaN, 0 < o.l && o.l < 100 ? 0 : NaN, o.l, o.opacity); - var h = Math.atan2(o.b, o.a) * rad2deg; + var h = Math.atan2(o.b, o.a) * degrees$2; return new Hcl(h < 0 ? h + 360 : h, Math.sqrt(o.a * o.a + o.b * o.b), o.l, o.opacity); } @@ -2471,7 +3070,7 @@ function lch(l, c, h, opacity) { return arguments.length === 1 ? hclConvert(l) : new Hcl(h, c, l, opacity == null ? 1 : opacity); } -function hcl(h, c, l, opacity) { +function hcl$2(h, c, l, opacity) { return arguments.length === 1 ? hclConvert(h) : new Hcl(h, c, l, opacity == null ? 1 : opacity); } @@ -2484,11 +3083,11 @@ function Hcl(h, c, l, opacity) { function hcl2lab(o) { if (isNaN(o.h)) return new Lab(o.l, 0, 0, o.opacity); - var h = o.h * deg2rad; + var h = o.h * radians$1; return new Lab(o.l, Math.cos(h) * o.c, Math.sin(h) * o.c, o.opacity); } -define(Hcl, hcl, extend(Color, { +define(Hcl, hcl$2, extend(Color, { brighter: function(k) { return new Hcl(this.h, this.c, this.l + K * (k == null ? 1 : k), this.opacity); }, @@ -2519,11 +3118,11 @@ function cubehelixConvert(o) { bl = b - l, k = (E * (g - l) - C * bl) / D, s = Math.sqrt(k * k + bl * bl) / (E * l * (1 - l)), // NaN if l=0 or l=1 - h = s ? Math.atan2(k, bl) * rad2deg - 120 : NaN; + h = s ? Math.atan2(k, bl) * degrees$2 - 120 : NaN; return new Cubehelix(h < 0 ? h + 360 : h, s, l, o.opacity); } -function cubehelix(h, s, l, opacity) { +function cubehelix$3(h, s, l, opacity) { return arguments.length === 1 ? cubehelixConvert(h) : new Cubehelix(h, s, l, opacity == null ? 1 : opacity); } @@ -2534,7 +3133,7 @@ function Cubehelix(h, s, l, opacity) { this.opacity = +opacity; } -define(Cubehelix, cubehelix, extend(Color, { +define(Cubehelix, cubehelix$3, extend(Color, { brighter: function(k) { k = k == null ? brighter : Math.pow(brighter, k); return new Cubehelix(this.h, this.s, this.l * k, this.opacity); @@ -2544,7 +3143,7 @@ define(Cubehelix, cubehelix, extend(Color, { return new Cubehelix(this.h, this.s, this.l * k, this.opacity); }, rgb: function() { - var h = isNaN(this.h) ? 0 : (this.h + 120) * deg2rad, + var h = isNaN(this.h) ? 0 : (this.h + 120) * radians$1, l = +this.l, a = isNaN(this.s) ? 0 : this.s * l * (1 - l), cosh = Math.cos(h), @@ -2558,7 +3157,7 @@ define(Cubehelix, cubehelix, extend(Color, { } })); -function basis(t1, v0, v1, v2, v3) { +function basis$1(t1, v0, v1, v2, v3) { var t2 = t1 * t1, t3 = t2 * t1; return ((1 - 3 * t1 + 3 * t2 - t3) * v0 + (4 - 6 * t2 + 3 * t3) * v1 @@ -2566,7 +3165,7 @@ function basis(t1, v0, v1, v2, v3) { + t3 * v3) / 6; } -function basis$1(values) { +function basis$2(values) { var n = values.length - 1; return function(t) { var i = t <= 0 ? (t = 0) : t >= 1 ? (t = 1, n - 1) : Math.floor(t * n), @@ -2574,11 +3173,11 @@ function basis$1(values) { v2 = values[i + 1], v0 = i > 0 ? values[i - 1] : 2 * v1 - v2, v3 = i < n - 1 ? values[i + 2] : 2 * v2 - v1; - return basis((t - i / n) * n, v0, v1, v2, v3); + return basis$1((t - i / n) * n, v0, v1, v2, v3); }; } -function basisClosed(values) { +function basisClosed$1(values) { var n = values.length; return function(t) { var i = Math.floor(((t %= 1) < 0 ? ++t : t) * n), @@ -2586,46 +3185,42 @@ function basisClosed(values) { v1 = values[i % n], v2 = values[(i + 1) % n], v3 = values[(i + 2) % n]; - return basis((t - i / n) * n, v0, v1, v2, v3); + return basis$1((t - i / n) * n, v0, v1, v2, v3); }; } -function constant$3(x) { - return function() { - return x; - }; -} +var constant$8 = x => () => x; -function linear(a, d) { +function linear$2(a, d) { return function(t) { return a + t * d; }; } -function exponential(a, b, y) { +function exponential$1(a, b, y) { return a = Math.pow(a, y), b = Math.pow(b, y) - a, y = 1 / y, function(t) { return Math.pow(a + t * b, y); }; } -function hue(a, b) { +function hue$1(a, b) { var d = b - a; - return d ? linear(a, d > 180 || d < -180 ? d - 360 * Math.round(d / 360) : d) : constant$3(isNaN(a) ? b : a); + return d ? linear$2(a, d > 180 || d < -180 ? d - 360 * Math.round(d / 360) : d) : constant$8(isNaN(a) ? b : a); } -function gamma(y) { +function gamma$1(y) { return (y = +y) === 1 ? nogamma : function(a, b) { - return b - a ? exponential(a, b, y) : constant$3(isNaN(a) ? b : a); + return b - a ? exponential$1(a, b, y) : constant$8(isNaN(a) ? b : a); }; } function nogamma(a, b) { var d = b - a; - return d ? linear(a, d) : constant$3(isNaN(a) ? b : a); + return d ? linear$2(a, d) : constant$8(isNaN(a) ? b : a); } var interpolateRgb = (function rgbGamma(y) { - var color = gamma(y); + var color = gamma$1(y); function rgb$1(start, end) { var r = color((start = rgb(start)).r, (end = rgb(end)).r), @@ -2672,8 +3267,8 @@ function rgbSpline(spline) { }; } -var rgbBasis = rgbSpline(basis$1); -var rgbBasisClosed = rgbSpline(basisClosed); +var rgbBasis = rgbSpline(basis$2); +var rgbBasisClosed = rgbSpline(basisClosed$1); function numberArray(a, b) { if (!b) b = []; @@ -2690,7 +3285,7 @@ function isNumberArray(x) { return ArrayBuffer.isView(x) && !(x instanceof DataView); } -function array$1(a, b) { +function array$3(a, b) { return (isNumberArray(b) ? numberArray : genericArray)(a, b); } @@ -2701,7 +3296,7 @@ function genericArray(a, b) { c = new Array(nb), i; - for (i = 0; i < na; ++i) x[i] = interpolateValue(a[i], b[i]); + for (i = 0; i < na; ++i) x[i] = interpolate$2(a[i], b[i]); for (; i < nb; ++i) c[i] = b[i]; return function(t) { @@ -2710,7 +3305,7 @@ function genericArray(a, b) { }; } -function date(a, b) { +function date$1(a, b) { var d = new Date; return a = +a, b = +b, function(t) { return d.setTime(a * (1 - t) + b * t), d; @@ -2723,7 +3318,7 @@ function interpolateNumber(a, b) { }; } -function object(a, b) { +function object$1(a, b) { var i = {}, c = {}, k; @@ -2733,7 +3328,7 @@ function object(a, b) { for (k in b) { if (k in a) { - i[k] = interpolateValue(a[k], b[k]); + i[k] = interpolate$2(a[k], b[k]); } else { c[k] = b[k]; } @@ -2808,16 +3403,16 @@ function interpolateString(a, b) { }); } -function interpolateValue(a, b) { +function interpolate$2(a, b) { var t = typeof b, c; - return b == null || t === "boolean" ? constant$3(b) + return b == null || t === "boolean" ? constant$8(b) : (t === "number" ? interpolateNumber : t === "string" ? ((c = color(b)) ? (b = c, interpolateRgb) : interpolateString) : b instanceof color ? interpolateRgb - : b instanceof Date ? date + : b instanceof Date ? date$1 : isNumberArray(b) ? numberArray : Array.isArray(b) ? genericArray - : typeof b.valueOf !== "function" && typeof b.toString !== "function" || isNaN(b) ? object + : typeof b.valueOf !== "function" && typeof b.toString !== "function" || isNaN(b) ? object$1 : interpolateNumber)(a, b); } @@ -2828,8 +3423,8 @@ function discrete(range) { }; } -function hue$1(a, b) { - var i = hue(+a, +b); +function hue(a, b) { + var i = hue$1(+a, +b); return function(t) { var x = i(t); return x - 360 * Math.floor(x / 360); @@ -2842,9 +3437,9 @@ function interpolateRound(a, b) { }; } -var degrees = 180 / Math.PI; +var degrees$1 = 180 / Math.PI; -var identity$2 = { +var identity$7 = { translateX: 0, translateY: 0, rotate: 0, @@ -2862,33 +3457,26 @@ function decompose(a, b, c, d, e, f) { return { translateX: e, translateY: f, - rotate: Math.atan2(b, a) * degrees, - skewX: Math.atan(skewX) * degrees, + rotate: Math.atan2(b, a) * degrees$1, + skewX: Math.atan(skewX) * degrees$1, scaleX: scaleX, scaleY: scaleY }; } -var cssNode, - cssRoot, - cssView, - svgNode; +var svgNode; +/* eslint-disable no-undef */ function parseCss(value) { - if (value === "none") return identity$2; - if (!cssNode) cssNode = document.createElement("DIV"), cssRoot = document.documentElement, cssView = document.defaultView; - cssNode.style.transform = value; - value = cssView.getComputedStyle(cssRoot.appendChild(cssNode), null).getPropertyValue("transform"); - cssRoot.removeChild(cssNode); - value = value.slice(7, -1).split(","); - return decompose(+value[0], +value[1], +value[2], +value[3], +value[4], +value[5]); + const m = new (typeof DOMMatrix === "function" ? DOMMatrix : WebKitCSSMatrix)(value + ""); + return m.isIdentity ? identity$7 : decompose(m.a, m.b, m.c, m.d, m.e, m.f); } function parseSvg(value) { - if (value == null) return identity$2; + if (value == null) return identity$7; if (!svgNode) svgNode = document.createElementNS("http://www.w3.org/2000/svg", "g"); svgNode.setAttribute("transform", value); - if (!(value = svgNode.transform.baseVal.consolidate())) return identity$2; + if (!(value = svgNode.transform.baseVal.consolidate())) return identity$7; value = value.matrix; return decompose(value.a, value.b, value.c, value.d, value.e, value.f); } @@ -2954,10 +3542,7 @@ function interpolateTransform(parse, pxComma, pxParen, degParen) { var interpolateTransformCss = interpolateTransform(parseCss, "px, ", "px)", "deg)"); var interpolateTransformSvg = interpolateTransform(parseSvg, ", ", ")", ")"); -var rho = Math.SQRT2, - rho2 = 2, - rho4 = 4, - epsilon2 = 1e-12; +var epsilon2$1 = 1e-12; function cosh(x) { return ((x = Math.exp(x)) + 1 / x) / 2; @@ -2971,57 +3556,67 @@ function tanh(x) { return ((x = Math.exp(2 * x)) - 1) / (x + 1); } -// p0 = [ux0, uy0, w0] -// p1 = [ux1, uy1, w1] -function interpolateZoom(p0, p1) { - var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], - ux1 = p1[0], uy1 = p1[1], w1 = p1[2], - dx = ux1 - ux0, - dy = uy1 - uy0, - d2 = dx * dx + dy * dy, - i, - S; - - // Special case for u0 ≅ u1. - if (d2 < epsilon2) { - S = Math.log(w1 / w0) / rho; - i = function(t) { - return [ - ux0 + t * dx, - uy0 + t * dy, - w0 * Math.exp(rho * t * S) - ]; - }; - } +var interpolateZoom = (function zoomRho(rho, rho2, rho4) { - // General case. - else { - var d1 = Math.sqrt(d2), - b0 = (w1 * w1 - w0 * w0 + rho4 * d2) / (2 * w0 * rho2 * d1), - b1 = (w1 * w1 - w0 * w0 - rho4 * d2) / (2 * w1 * rho2 * d1), - r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), - r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1); - S = (r1 - r0) / rho; - i = function(t) { - var s = t * S, - coshr0 = cosh(r0), - u = w0 / (rho2 * d1) * (coshr0 * tanh(rho * s + r0) - sinh(r0)); - return [ - ux0 + u * dx, - uy0 + u * dy, - w0 * coshr0 / cosh(rho * s + r0) - ]; - }; - } + // p0 = [ux0, uy0, w0] + // p1 = [ux1, uy1, w1] + function zoom(p0, p1) { + var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], + ux1 = p1[0], uy1 = p1[1], w1 = p1[2], + dx = ux1 - ux0, + dy = uy1 - uy0, + d2 = dx * dx + dy * dy, + i, + S; + + // Special case for u0 ≅ u1. + if (d2 < epsilon2$1) { + S = Math.log(w1 / w0) / rho; + i = function(t) { + return [ + ux0 + t * dx, + uy0 + t * dy, + w0 * Math.exp(rho * t * S) + ]; + }; + } - i.duration = S * 1000; + // General case. + else { + var d1 = Math.sqrt(d2), + b0 = (w1 * w1 - w0 * w0 + rho4 * d2) / (2 * w0 * rho2 * d1), + b1 = (w1 * w1 - w0 * w0 - rho4 * d2) / (2 * w1 * rho2 * d1), + r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), + r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1); + S = (r1 - r0) / rho; + i = function(t) { + var s = t * S, + coshr0 = cosh(r0), + u = w0 / (rho2 * d1) * (coshr0 * tanh(rho * s + r0) - sinh(r0)); + return [ + ux0 + u * dx, + uy0 + u * dy, + w0 * coshr0 / cosh(rho * s + r0) + ]; + }; + } - return i; -} + i.duration = S * 1000 * rho / Math.SQRT2; -function hsl$1(hue) { + return i; + } + + zoom.rho = function(_) { + var _1 = Math.max(1e-3, +_), _2 = _1 * _1, _4 = _2 * _2; + return zoomRho(_1, _2, _4); + }; + + return zoom; +})(Math.SQRT2, 2, 4); + +function hsl(hue) { return function(start, end) { - var h = hue((start = hsl(start)).h, (end = hsl(end)).h), + var h = hue((start = hsl$2(start)).h, (end = hsl$2(end)).h), s = nogamma(start.s, end.s), l = nogamma(start.l, end.l), opacity = nogamma(start.opacity, end.opacity); @@ -3035,11 +3630,11 @@ function hsl$1(hue) { } } -var hsl$2 = hsl$1(hue); -var hslLong = hsl$1(nogamma); +var hsl$1 = hsl(hue$1); +var hslLong = hsl(nogamma); -function lab$1(start, end) { - var l = nogamma((start = lab(start)).l, (end = lab(end)).l), +function lab(start, end) { + var l = nogamma((start = lab$1(start)).l, (end = lab$1(end)).l), a = nogamma(start.a, end.a), b = nogamma(start.b, end.b), opacity = nogamma(start.opacity, end.opacity); @@ -3052,9 +3647,9 @@ function lab$1(start, end) { }; } -function hcl$1(hue) { +function hcl(hue) { return function(start, end) { - var h = hue((start = hcl(start)).h, (end = hcl(end)).h), + var h = hue((start = hcl$2(start)).h, (end = hcl$2(end)).h), c = nogamma(start.c, end.c), l = nogamma(start.l, end.l), opacity = nogamma(start.opacity, end.opacity); @@ -3068,15 +3663,15 @@ function hcl$1(hue) { } } -var hcl$2 = hcl$1(hue); -var hclLong = hcl$1(nogamma); +var hcl$1 = hcl(hue$1); +var hclLong = hcl(nogamma); function cubehelix$1(hue) { return (function cubehelixGamma(y) { y = +y; - function cubehelix$1(start, end) { - var h = hue((start = cubehelix(start)).h, (end = cubehelix(end)).h), + function cubehelix(start, end) { + var h = hue((start = cubehelix$3(start)).h, (end = cubehelix$3(end)).h), s = nogamma(start.s, end.s), l = nogamma(start.l, end.l), opacity = nogamma(start.opacity, end.opacity); @@ -3089,16 +3684,17 @@ function cubehelix$1(hue) { }; } - cubehelix$1.gamma = cubehelixGamma; + cubehelix.gamma = cubehelixGamma; - return cubehelix$1; + return cubehelix; })(1); } -var cubehelix$2 = cubehelix$1(hue); +var cubehelix$2 = cubehelix$1(hue$1); var cubehelixLong = cubehelix$1(nogamma); function piecewise(interpolate, values) { + if (values === undefined) values = interpolate, interpolate = interpolate$2; var i = 0, n = values.length - 1, v = values[0], I = new Array(n < 0 ? 0 : n); while (i < n) I[i] = interpolate(v, v = values[++i]); return function(t) { @@ -3107,15 +3703,15 @@ function piecewise(interpolate, values) { }; } -function quantize(interpolator, n) { +function quantize$1(interpolator, n) { var samples = new Array(n); for (var i = 0; i < n; ++i) samples[i] = interpolator(i / (n - 1)); return samples; } var frame = 0, // is an animation frame pending? - timeout = 0, // is a timeout pending? - interval = 0, // are any timers active? + timeout$1 = 0, // is a timeout pending? + interval$1 = 0, // are any timers active? pokeDelay = 1000, // how frequently we check for clock skew taskHead, taskTail, @@ -3181,7 +3777,7 @@ function timerFlush() { function wake() { clockNow = (clockLast = clock.now()) + clockSkew; - frame = timeout = 0; + frame = timeout$1 = 0; try { timerFlush(); } finally { @@ -3213,36 +3809,40 @@ function nap() { function sleep(time) { if (frame) return; // Soonest alarm already set, or will be. - if (timeout) timeout = clearTimeout(timeout); + if (timeout$1) timeout$1 = clearTimeout(timeout$1); var delay = time - clockNow; // Strictly less than if we recomputed clockNow. if (delay > 24) { - if (time < Infinity) timeout = setTimeout(wake, time - clock.now() - clockSkew); - if (interval) interval = clearInterval(interval); + if (time < Infinity) timeout$1 = setTimeout(wake, time - clock.now() - clockSkew); + if (interval$1) interval$1 = clearInterval(interval$1); } else { - if (!interval) clockLast = clock.now(), interval = setInterval(poke, pokeDelay); + if (!interval$1) clockLast = clock.now(), interval$1 = setInterval(poke, pokeDelay); frame = 1, setFrame(wake); } } -function timeout$1(callback, delay, time) { +function timeout(callback, delay, time) { var t = new Timer; delay = delay == null ? 0 : +delay; - t.restart(function(elapsed) { + t.restart(elapsed => { t.stop(); callback(elapsed + delay); }, delay, time); return t; } -function interval$1(callback, delay, time) { +function interval(callback, delay, time) { var t = new Timer, total = delay; if (delay == null) return t.restart(callback, delay, time), t; - delay = +delay, time = time == null ? now() : +time; - t.restart(function tick(elapsed) { - elapsed += total; - t.restart(tick, total += delay, time); - callback(elapsed); - }, delay, time); + t._restart = t.restart; + t.restart = function(callback, delay, time) { + delay = +delay, time = time == null ? now() : +time; + t._restart(function tick(elapsed) { + elapsed += total; + t._restart(tick, total += delay, time); + callback(elapsed); + }, delay, time); + }; + t.restart(callback, delay, time); return t; } @@ -3261,7 +3861,7 @@ function schedule(node, name, id, index, group, timing) { var schedules = node.__transition; if (!schedules) node.__transition = {}; else if (id in schedules) return; - create$1(node, id, { + create(node, id, { name: name, index: index, // For context during callback. group: group, // For context during callback. @@ -3277,24 +3877,24 @@ function schedule(node, name, id, index, group, timing) { } function init(node, id) { - var schedule = get$1(node, id); + var schedule = get(node, id); if (schedule.state > CREATED) throw new Error("too late; already scheduled"); return schedule; } -function set$1(node, id) { - var schedule = get$1(node, id); +function set(node, id) { + var schedule = get(node, id); if (schedule.state > STARTED) throw new Error("too late; already running"); return schedule; } -function get$1(node, id) { +function get(node, id) { var schedule = node.__transition; if (!schedule || !(schedule = schedule[id])) throw new Error("transition not found"); return schedule; } -function create$1(node, id, self) { +function create(node, id, self) { var schedules = node.__transition, tween; @@ -3324,7 +3924,7 @@ function create$1(node, id, self) { // While this element already has a starting transition during this frame, // defer starting an interrupting transition until that transition has a // chance to tick (and possibly end); see d3/d3-transition#54! - if (o.state === STARTED) return timeout$1(start); + if (o.state === STARTED) return timeout(start); // Interrupt the active transition, if any. if (o.state === RUNNING) { @@ -3347,7 +3947,7 @@ function create$1(node, id, self) { // Note the transition may be canceled after start and before the first tick! // Note this must be scheduled before the start event; see d3/d3-transition#16! // Assuming this is successful, subsequent callbacks go straight to tick. - timeout$1(function() { + timeout(function() { if (self.state === STARTED) { self.state = RUNNING; self.timer.restart(tick, self.delay, self.time); @@ -3429,7 +4029,7 @@ function selection_interrupt(name) { function tweenRemove(id, name) { var tween0, tween1; return function() { - var schedule = set$1(this, id), + var schedule = set(this, id), tween = schedule.tween; // If this node shared tween with the previous node, @@ -3454,7 +4054,7 @@ function tweenFunction(id, name, value) { var tween0, tween1; if (typeof value !== "function") throw new Error; return function() { - var schedule = set$1(this, id), + var schedule = set(this, id), tween = schedule.tween; // If this node shared tween with the previous node, @@ -3481,7 +4081,7 @@ function transition_tween(name, value) { name += ""; if (arguments.length < 2) { - var tween = get$1(this.node(), id).tween; + var tween = get(this.node(), id).tween; for (var i = 0, n = tween.length, t; i < n; ++i) { if ((t = tween[i]).name === name) { return t.value; @@ -3497,16 +4097,16 @@ function tweenValue(transition, name, value) { var id = transition._id; transition.each(function() { - var schedule = set$1(this, id); + var schedule = set(this, id); (schedule.value || (schedule.value = {}))[name] = value.apply(this, arguments); }); return function(node) { - return get$1(node, id).value[name]; + return get(node, id).value[name]; }; } -function interpolate(a, b) { +function interpolate$1(a, b) { var c; return (typeof b === "number" ? interpolateNumber : b instanceof color ? interpolateRgb @@ -3514,19 +4114,19 @@ function interpolate(a, b) { : interpolateString)(a, b); } -function attrRemove$1(name) { +function attrRemove(name) { return function() { this.removeAttribute(name); }; } -function attrRemoveNS$1(fullname) { +function attrRemoveNS(fullname) { return function() { this.removeAttributeNS(fullname.space, fullname.local); }; } -function attrConstant$1(name, interpolate, value1) { +function attrConstant(name, interpolate, value1) { var string00, string1 = value1 + "", interpolate0; @@ -3538,7 +4138,7 @@ function attrConstant$1(name, interpolate, value1) { }; } -function attrConstantNS$1(fullname, interpolate, value1) { +function attrConstantNS(fullname, interpolate, value1) { var string00, string1 = value1 + "", interpolate0; @@ -3550,7 +4150,7 @@ function attrConstantNS$1(fullname, interpolate, value1) { }; } -function attrFunction$1(name, interpolate, value) { +function attrFunction(name, interpolate, value) { var string00, string10, interpolate0; @@ -3565,7 +4165,7 @@ function attrFunction$1(name, interpolate, value) { }; } -function attrFunctionNS$1(fullname, interpolate, value) { +function attrFunctionNS(fullname, interpolate, value) { var string00, string10, interpolate0; @@ -3581,11 +4181,11 @@ function attrFunctionNS$1(fullname, interpolate, value) { } function transition_attr(name, value) { - var fullname = namespace(name), i = fullname === "transform" ? interpolateTransformSvg : interpolate; + var fullname = namespace(name), i = fullname === "transform" ? interpolateTransformSvg : interpolate$1; return this.attrTween(name, typeof value === "function" - ? (fullname.local ? attrFunctionNS$1 : attrFunction$1)(fullname, i, tweenValue(this, "attr." + name, value)) - : value == null ? (fullname.local ? attrRemoveNS$1 : attrRemove$1)(fullname) - : (fullname.local ? attrConstantNS$1 : attrConstant$1)(fullname, i, value)); + ? (fullname.local ? attrFunctionNS : attrFunction)(fullname, i, tweenValue(this, "attr." + name, value)) + : value == null ? (fullname.local ? attrRemoveNS : attrRemove)(fullname) + : (fullname.local ? attrConstantNS : attrConstant)(fullname, i, value)); } function attrInterpolate(name, i) { @@ -3650,18 +4250,18 @@ function transition_delay(value) { ? this.each((typeof value === "function" ? delayFunction : delayConstant)(id, value)) - : get$1(this.node(), id).delay; + : get(this.node(), id).delay; } function durationFunction(id, value) { return function() { - set$1(this, id).duration = +value.apply(this, arguments); + set(this, id).duration = +value.apply(this, arguments); }; } function durationConstant(id, value) { return value = +value, function() { - set$1(this, id).duration = value; + set(this, id).duration = value; }; } @@ -3672,13 +4272,13 @@ function transition_duration(value) { ? this.each((typeof value === "function" ? durationFunction : durationConstant)(id, value)) - : get$1(this.node(), id).duration; + : get(this.node(), id).duration; } function easeConstant(id, value) { if (typeof value !== "function") throw new Error; return function() { - set$1(this, id).ease = value; + set(this, id).ease = value; }; } @@ -3687,7 +4287,20 @@ function transition_ease(value) { return arguments.length ? this.each(easeConstant(id, value)) - : get$1(this.node(), id).ease; + : get(this.node(), id).ease; +} + +function easeVarying(id, value) { + return function() { + var v = value.apply(this, arguments); + if (typeof v !== "function") throw new Error; + set(this, id).ease = v; + }; +} + +function transition_easeVarying(value) { + if (typeof value !== "function") throw new Error; + return this.each(easeVarying(this._id, value)); } function transition_filter(match) { @@ -3731,7 +4344,7 @@ function start(name) { } function onFunction(id, name, listener) { - var on0, on1, sit = start(name) ? init : set$1; + var on0, on1, sit = start(name) ? init : set; return function() { var schedule = sit(this, id), on = schedule.on; @@ -3749,7 +4362,7 @@ function transition_on(name, listener) { var id = this._id; return arguments.length < 2 - ? get$1(this.node(), id).on.on(name) + ? get(this.node(), id).on.on(name) : this.each(onFunction(id, name, listener)); } @@ -3776,7 +4389,7 @@ function transition_select(select) { if ((node = group[i]) && (subnode = select.call(node, node.__data__, i, group))) { if ("__data__" in node) subnode.__data__ = node.__data__; subgroup[i] = subnode; - schedule(subgroup[i], name, id, i, subgroup, get$1(node, id)); + schedule(subgroup[i], name, id, i, subgroup, get(node, id)); } } } @@ -3793,7 +4406,7 @@ function transition_selectAll(select) { for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) { for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) { if (node = group[i]) { - for (var children = select.call(node, node.__data__, i, group), child, inherit = get$1(node, id), k = 0, l = children.length; k < l; ++k) { + for (var children = select.call(node, node.__data__, i, group), child, inherit = get(node, id), k = 0, l = children.length; k < l; ++k) { if (child = children[k]) { schedule(child, name, id, k, children, inherit); } @@ -3807,10 +4420,10 @@ function transition_selectAll(select) { return new Transition(subgroups, parents, name, id); } -var Selection$1 = selection.prototype.constructor; +var Selection = selection.prototype.constructor; function transition_selection() { - return new Selection$1(this._groups, this._parents); + return new Selection(this._groups, this._parents); } function styleNull(name, interpolate) { @@ -3826,13 +4439,13 @@ function styleNull(name, interpolate) { }; } -function styleRemove$1(name) { +function styleRemove(name) { return function() { this.style.removeProperty(name); }; } -function styleConstant$1(name, interpolate, value1) { +function styleConstant(name, interpolate, value1) { var string00, string1 = value1 + "", interpolate0; @@ -3844,7 +4457,7 @@ function styleConstant$1(name, interpolate, value1) { }; } -function styleFunction$1(name, interpolate, value) { +function styleFunction(name, interpolate, value) { var string00, string10, interpolate0; @@ -3862,9 +4475,9 @@ function styleFunction$1(name, interpolate, value) { function styleMaybeRemove(id, name) { var on0, on1, listener0, key = "style." + name, event = "end." + key, remove; return function() { - var schedule = set$1(this, id), + var schedule = set(this, id), on = schedule.on, - listener = schedule.value[key] == null ? remove || (remove = styleRemove$1(name)) : undefined; + listener = schedule.value[key] == null ? remove || (remove = styleRemove(name)) : undefined; // If this node shared a dispatch with the previous node, // just assign the updated shared dispatch and we’re done! @@ -3876,15 +4489,15 @@ function styleMaybeRemove(id, name) { } function transition_style(name, value, priority) { - var i = (name += "") === "transform" ? interpolateTransformCss : interpolate; + var i = (name += "") === "transform" ? interpolateTransformCss : interpolate$1; return value == null ? this .styleTween(name, styleNull(name, i)) - .on("end.style." + name, styleRemove$1(name)) + .on("end.style." + name, styleRemove(name)) : typeof value === "function" ? this - .styleTween(name, styleFunction$1(name, i, tweenValue(this, "style." + name, value))) + .styleTween(name, styleFunction(name, i, tweenValue(this, "style." + name, value))) .each(styleMaybeRemove(this._id, name)) : this - .styleTween(name, styleConstant$1(name, i, value), priority) + .styleTween(name, styleConstant(name, i, value), priority) .on("end.style." + name, null); } @@ -3913,13 +4526,13 @@ function transition_styleTween(name, value, priority) { return this.tween(key, styleTween(name, value, priority == null ? "" : priority)); } -function textConstant$1(value) { +function textConstant(value) { return function() { this.textContent = value; }; } -function textFunction$1(value) { +function textFunction(value) { return function() { var value1 = value(this); this.textContent = value1 == null ? "" : value1; @@ -3928,8 +4541,8 @@ function textFunction$1(value) { function transition_text(value) { return this.tween("text", typeof value === "function" - ? textFunction$1(tweenValue(this, "text", value)) - : textConstant$1(value == null ? "" : value + "")); + ? textFunction(tweenValue(this, "text", value)) + : textConstant(value == null ? "" : value + "")); } function textInterpolate(i) { @@ -3965,7 +4578,7 @@ function transition_transition() { for (var groups = this._groups, m = groups.length, j = 0; j < m; ++j) { for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) { if (node = group[i]) { - var inherit = get$1(node, id0); + var inherit = get(node, id0); schedule(node, name, id1, i, group, { time: inherit.time + inherit.delay + inherit.duration, delay: 0, @@ -3986,7 +4599,7 @@ function transition_end() { end = {value: function() { if (--size === 0) resolve(); }}; that.each(function() { - var schedule = set$1(this, id), + var schedule = set(this, id), on = schedule.on; // If this node shared a dispatch with the previous node, @@ -4001,6 +4614,9 @@ function transition_end() { schedule.on = on1; }); + + // The selection was empty, resolve end immediately + if (size === 0) resolve(); }); } @@ -4049,12 +4665,12 @@ Transition.prototype = transition.prototype = { delay: transition_delay, duration: transition_duration, ease: transition_ease, - end: transition_end + easeVarying: transition_easeVarying, + end: transition_end, + [Symbol.iterator]: selection_prototype[Symbol.iterator] }; -function linear$1(t) { - return +t; -} +const linear$1 = t => +t; function quadIn(t) { return t * t; @@ -4080,7 +4696,7 @@ function cubicInOut(t) { return ((t *= 2) <= 1 ? t * t * t : (t -= 2) * t * t + 2) / 2; } -var exponent = 3; +var exponent$1 = 3; var polyIn = (function custom(e) { e = +e; @@ -4092,7 +4708,7 @@ var polyIn = (function custom(e) { polyIn.exponent = custom; return polyIn; -})(exponent); +})(exponent$1); var polyOut = (function custom(e) { e = +e; @@ -4104,7 +4720,7 @@ var polyOut = (function custom(e) { polyOut.exponent = custom; return polyOut; -})(exponent); +})(exponent$1); var polyInOut = (function custom(e) { e = +e; @@ -4116,33 +4732,38 @@ var polyInOut = (function custom(e) { polyInOut.exponent = custom; return polyInOut; -})(exponent); +})(exponent$1); -var pi = Math.PI, - halfPi = pi / 2; +var pi$4 = Math.PI, + halfPi$3 = pi$4 / 2; function sinIn(t) { - return 1 - Math.cos(t * halfPi); + return (+t === 1) ? 1 : 1 - Math.cos(t * halfPi$3); } function sinOut(t) { - return Math.sin(t * halfPi); + return Math.sin(t * halfPi$3); } function sinInOut(t) { - return (1 - Math.cos(pi * t)) / 2; + return (1 - Math.cos(pi$4 * t)) / 2; +} + +// tpmt is two power minus ten times t scaled to [0,1] +function tpmt(x) { + return (Math.pow(2, -10 * x) - 0.0009765625) * 1.0009775171065494; } function expIn(t) { - return Math.pow(2, 10 * t - 10); + return tpmt(1 - +t); } function expOut(t) { - return 1 - Math.pow(2, -10 * t); + return 1 - tpmt(t); } function expInOut(t) { - return ((t *= 2) <= 1 ? Math.pow(2, 10 * t - 10) : 2 - Math.pow(2, 10 - 10 * t)) / 2; + return ((t *= 2) <= 1 ? tpmt(1 - t) : 2 - tpmt(t - 1)) / 2; } function circleIn(t) { @@ -4186,7 +4807,7 @@ var backIn = (function custom(s) { s = +s; function backIn(t) { - return t * t * ((s + 1) * t - s); + return (t = +t) * t * (s * (t - 1) + t); } backIn.overshoot = custom; @@ -4198,7 +4819,7 @@ var backOut = (function custom(s) { s = +s; function backOut(t) { - return --t * t * ((s + 1) * t + s) + 1; + return --t * t * ((t + 1) * s + t) + 1; } backOut.overshoot = custom; @@ -4218,46 +4839,46 @@ var backInOut = (function custom(s) { return backInOut; })(overshoot); -var tau = 2 * Math.PI, +var tau$5 = 2 * Math.PI, amplitude = 1, period = 0.3; var elasticIn = (function custom(a, p) { - var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau); + var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau$5); function elasticIn(t) { - return a * Math.pow(2, 10 * --t) * Math.sin((s - t) / p); + return a * tpmt(-(--t)) * Math.sin((s - t) / p); } - elasticIn.amplitude = function(a) { return custom(a, p * tau); }; + elasticIn.amplitude = function(a) { return custom(a, p * tau$5); }; elasticIn.period = function(p) { return custom(a, p); }; return elasticIn; })(amplitude, period); var elasticOut = (function custom(a, p) { - var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau); + var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau$5); function elasticOut(t) { - return 1 - a * Math.pow(2, -10 * (t = +t)) * Math.sin((t + s) / p); + return 1 - a * tpmt(t = +t) * Math.sin((t + s) / p); } - elasticOut.amplitude = function(a) { return custom(a, p * tau); }; + elasticOut.amplitude = function(a) { return custom(a, p * tau$5); }; elasticOut.period = function(p) { return custom(a, p); }; return elasticOut; })(amplitude, period); var elasticInOut = (function custom(a, p) { - var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau); + var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau$5); function elasticInOut(t) { return ((t = t * 2 - 1) < 0 - ? a * Math.pow(2, 10 * t) * Math.sin((s - t) / p) - : 2 - a * Math.pow(2, -10 * t) * Math.sin((s + t) / p)) / 2; + ? a * tpmt(-t) * Math.sin((s - t) / p) + : 2 - a * tpmt(t) * Math.sin((s + t) / p)) / 2; } - elasticInOut.amplitude = function(a) { return custom(a, p * tau); }; + elasticInOut.amplitude = function(a) { return custom(a, p * tau$5); }; elasticInOut.period = function(p) { return custom(a, p); }; return elasticInOut; @@ -4274,7 +4895,7 @@ function inherit(node, id) { var timing; while (!(timing = node.__transition) || !(timing = timing[id])) { if (!(node = node.parentNode)) { - return defaultTiming.time = now(), defaultTiming; + throw new Error(`transition ${id} not found`); } } return timing; @@ -4304,7 +4925,7 @@ function selection_transition(name) { selection.prototype.interrupt = selection_interrupt; selection.prototype.transition = selection_transition; -var root$1 = [null]; +var root = [null]; function active(node, name) { var schedules = node.__transition, @@ -4315,7 +4936,7 @@ function active(node, name) { name = name == null ? null : name + ""; for (i in schedules) { if ((schedule = schedules[i]).state > SCHEDULED && schedule.name === name) { - return new Transition([[node]], root$1, name, +i); + return new Transition([[node]], root, name, +i); } } } @@ -4323,25 +4944,32 @@ function active(node, name) { return null; } -function constant$4(x) { - return function() { - return x; - }; -} - -function BrushEvent(target, type, selection) { - this.target = target; - this.type = type; - this.selection = selection; +var constant$7 = x => () => x; + +function BrushEvent(type, { + sourceEvent, + target, + selection, + mode, + dispatch +}) { + Object.defineProperties(this, { + type: {value: type, enumerable: true, configurable: true}, + sourceEvent: {value: sourceEvent, enumerable: true, configurable: true}, + target: {value: target, enumerable: true, configurable: true}, + selection: {value: selection, enumerable: true, configurable: true}, + mode: {value: mode, enumerable: true, configurable: true}, + _: {value: dispatch} + }); } -function nopropagation$1() { - exports.event.stopImmediatePropagation(); +function nopropagation$1(event) { + event.stopImmediatePropagation(); } -function noevent$1() { - exports.event.preventDefault(); - exports.event.stopImmediatePropagation(); +function noevent$1(event) { + event.preventDefault(); + event.stopImmediatePropagation(); } var MODE_DRAG = {name: "drag"}, @@ -4349,6 +4977,8 @@ var MODE_DRAG = {name: "drag"}, MODE_HANDLE = {name: "handle"}, MODE_CENTER = {name: "center"}; +const {abs: abs$3, max: max$2, min: min$1} = Math; + function number1(e) { return [+e[0], +e[1]]; } @@ -4357,12 +4987,6 @@ function number2(e) { return [number1(e[0]), number1(e[1])]; } -function toucher(identifier) { - return function(target) { - return touch(target, exports.event.touches, identifier); - }; -} - var X = { name: "x", handles: ["w", "e"].map(type), @@ -4446,11 +5070,11 @@ function type(t) { } // Ignore right-click, since that should open the context menu. -function defaultFilter$1() { - return !exports.event.ctrlKey && !exports.event.button; +function defaultFilter$1(event) { + return !event.ctrlKey && !event.button; } -function defaultExtent() { +function defaultExtent$1() { var svg = this.ownerSVGElement || this; if (svg.hasAttribute("viewBox")) { svg = svg.viewBox.baseVal; @@ -4464,12 +5088,12 @@ function defaultTouchable$1() { } // Like d3.local, but with the name “__brush” rather than auto-generated. -function local$1(node) { +function local(node) { while (!node.__brush) if (!(node = node.parentNode)) return; return node.__brush; } -function empty$1(extent) { +function empty(extent) { return extent[0][0] === extent[1][0] || extent[0][1] === extent[1][1]; } @@ -4492,7 +5116,7 @@ function brush() { } function brush$1(dim) { - var extent = defaultExtent, + var extent = defaultExtent$1, filter = defaultFilter$1, touchable = defaultTouchable$1, keys = true, @@ -4512,7 +5136,7 @@ function brush$1(dim) { .attr("cursor", cursors.overlay) .merge(overlay) .each(function() { - var extent = local$1(this).extent; + var extent = local(this).extent; select(this) .attr("x", extent[0][0]) .attr("y", extent[0][1]) @@ -4553,17 +5177,17 @@ function brush$1(dim) { } brush.move = function(group, selection) { - if (group.selection) { + if (group.tween) { group - .on("start.brush", function() { emitter(this, arguments).beforestart().start(); }) - .on("interrupt.brush end.brush", function() { emitter(this, arguments).end(); }) + .on("start.brush", function(event) { emitter(this, arguments).beforestart().start(event); }) + .on("interrupt.brush end.brush", function(event) { emitter(this, arguments).end(event); }) .tween("brush", function() { var that = this, state = that.__brush, emit = emitter(that, arguments), selection0 = state.selection, selection1 = dim.input(typeof selection === "function" ? selection.apply(this, arguments) : selection, state.extent), - i = interpolateValue(selection0, selection1); + i = interpolate$2(selection0, selection1); function tween(t) { state.selection = t === 1 && selection1 === null ? null : i(t); @@ -4596,7 +5220,7 @@ function brush$1(dim) { function redraw() { var group = select(this), - selection = local$1(this).selection; + selection = local(this).selection; if (selection) { group.selectAll(".selection") @@ -4625,14 +5249,16 @@ function brush$1(dim) { } function emitter(that, args, clean) { - return (!clean && that.__brush.emitter) || new Emitter(that, args); + var emit = that.__brush.emitter; + return emit && (!clean || !emit.clean) ? emit : new Emitter(that, args, clean); } - function Emitter(that, args) { + function Emitter(that, args, clean) { this.that = that; this.args = args; this.state = that.__brush; this.active = 0; + this.clean = clean; } Emitter.prototype = { @@ -4640,34 +5266,46 @@ function brush$1(dim) { if (++this.active === 1) this.state.emitter = this, this.starting = true; return this; }, - start: function() { - if (this.starting) this.starting = false, this.emit("start"); - else this.emit("brush"); + start: function(event, mode) { + if (this.starting) this.starting = false, this.emit("start", event, mode); + else this.emit("brush", event); return this; }, - brush: function() { - this.emit("brush"); + brush: function(event, mode) { + this.emit("brush", event, mode); return this; }, - end: function() { - if (--this.active === 0) delete this.state.emitter, this.emit("end"); + end: function(event, mode) { + if (--this.active === 0) delete this.state.emitter, this.emit("end", event, mode); return this; }, - emit: function(type) { - customEvent(new BrushEvent(brush, type, dim.output(this.state.selection)), listeners.apply, listeners, [type, this.that, this.args]); + emit: function(type, event, mode) { + var d = select(this.that).datum(); + listeners.call( + type, + this.that, + new BrushEvent(type, { + sourceEvent: event, + target: brush, + selection: dim.output(this.state.selection), + mode, + dispatch: listeners + }), + d + ); } }; - function started() { - if (touchending && !exports.event.touches) return; + function started(event) { + if (touchending && !event.touches) return; if (!filter.apply(this, arguments)) return; var that = this, - type = exports.event.target.__data__.type, - mode = (keys && exports.event.metaKey ? type = "overlay" : type) === "selection" ? MODE_DRAG : (keys && exports.event.altKey ? MODE_CENTER : MODE_HANDLE), + type = event.target.__data__.type, + mode = (keys && event.metaKey ? type = "overlay" : type) === "selection" ? MODE_DRAG : (keys && event.altKey ? MODE_CENTER : MODE_HANDLE), signX = dim === Y ? null : signsX[type], signY = dim === X ? null : signsY[type], - state = local$1(that), + state = local(that), extent = state.extent, selection = state.selection, W = extent[0][0], w0, w1, @@ -4677,20 +5315,28 @@ function brush$1(dim) { dx = 0, dy = 0, moving, - shifting = signX && signY && keys && exports.event.shiftKey, + shifting = signX && signY && keys && event.shiftKey, lockX, lockY, - pointer = exports.event.touches ? toucher(exports.event.changedTouches[0].identifier) : mouse, - point0 = pointer(that), - point = point0, - emit = emitter(that, arguments, true).beforestart(); + points = Array.from(event.touches || [event], t => { + const i = t.identifier; + t = pointer(t, that); + t.point0 = t.slice(); + t.identifier = i; + return t; + }); if (type === "overlay") { if (selection) moving = true; - state.selection = selection = [ - [w0 = dim === Y ? W : point0[0], n0 = dim === X ? N : point0[1]], - [e0 = dim === Y ? E : w0, s0 = dim === X ? S : n0] - ]; + const pts = [points[0], points[1] || points[0]]; + state.selection = selection = [[ + w0 = dim === Y ? W : min$1(pts[0][0], pts[1][0]), + n0 = dim === X ? N : min$1(pts[0][1], pts[1][1]) + ], [ + e0 = dim === Y ? E : max$2(pts[0][0], pts[1][0]), + s0 = dim === X ? S : max$2(pts[0][1], pts[1][1]) + ]]; + if (points.length > 1) move(); } else { w0 = selection[0][0]; n0 = selection[0][1]; @@ -4709,38 +5355,47 @@ function brush$1(dim) { var overlay = group.selectAll(".overlay") .attr("cursor", cursors[type]); - if (exports.event.touches) { + interrupt(that); + var emit = emitter(that, arguments, true).beforestart(); + + if (event.touches) { emit.moved = moved; emit.ended = ended; } else { - var view = select(exports.event.view) + var view = select(event.view) .on("mousemove.brush", moved, true) .on("mouseup.brush", ended, true); if (keys) view .on("keydown.brush", keydowned, true) .on("keyup.brush", keyupped, true); - dragDisable(exports.event.view); + dragDisable(event.view); } - nopropagation$1(); - interrupt(that); redraw.call(that); - emit.start(); + emit.start(event, mode.name); - function moved() { - var point1 = pointer(that); - if (shifting && !lockX && !lockY) { - if (Math.abs(point1[0] - point[0]) > Math.abs(point1[1] - point[1])) lockY = true; - else lockX = true; + function moved(event) { + for (const p of event.changedTouches || [event]) { + for (const d of points) + if (d.identifier === p.identifier) d.cur = pointer(p, that); } - point = point1; + if (shifting && !lockX && !lockY && points.length === 1) { + const point = points[0]; + if (abs$3(point.cur[0] - point[0]) > abs$3(point.cur[1] - point[1])) + lockY = true; + else + lockX = true; + } + for (const point of points) + if (point.cur) point[0] = point.cur[0], point[1] = point.cur[1]; moving = true; - noevent$1(); - move(); + noevent$1(event); + move(event); } - function move() { + function move(event) { + const point = points[0], point0 = point.point0; var t; dx = point[0] - point0[0]; @@ -4749,20 +5404,25 @@ function brush$1(dim) { switch (mode) { case MODE_SPACE: case MODE_DRAG: { - if (signX) dx = Math.max(W - w0, Math.min(E - e0, dx)), w1 = w0 + dx, e1 = e0 + dx; - if (signY) dy = Math.max(N - n0, Math.min(S - s0, dy)), n1 = n0 + dy, s1 = s0 + dy; + if (signX) dx = max$2(W - w0, min$1(E - e0, dx)), w1 = w0 + dx, e1 = e0 + dx; + if (signY) dy = max$2(N - n0, min$1(S - s0, dy)), n1 = n0 + dy, s1 = s0 + dy; break; } case MODE_HANDLE: { - if (signX < 0) dx = Math.max(W - w0, Math.min(E - w0, dx)), w1 = w0 + dx, e1 = e0; - else if (signX > 0) dx = Math.max(W - e0, Math.min(E - e0, dx)), w1 = w0, e1 = e0 + dx; - if (signY < 0) dy = Math.max(N - n0, Math.min(S - n0, dy)), n1 = n0 + dy, s1 = s0; - else if (signY > 0) dy = Math.max(N - s0, Math.min(S - s0, dy)), n1 = n0, s1 = s0 + dy; + if (points[1]) { + if (signX) w1 = max$2(W, min$1(E, points[0][0])), e1 = max$2(W, min$1(E, points[1][0])), signX = 1; + if (signY) n1 = max$2(N, min$1(S, points[0][1])), s1 = max$2(N, min$1(S, points[1][1])), signY = 1; + } else { + if (signX < 0) dx = max$2(W - w0, min$1(E - w0, dx)), w1 = w0 + dx, e1 = e0; + else if (signX > 0) dx = max$2(W - e0, min$1(E - e0, dx)), w1 = w0, e1 = e0 + dx; + if (signY < 0) dy = max$2(N - n0, min$1(S - n0, dy)), n1 = n0 + dy, s1 = s0; + else if (signY > 0) dy = max$2(N - s0, min$1(S - s0, dy)), n1 = n0, s1 = s0 + dy; + } break; } case MODE_CENTER: { - if (signX) w1 = Math.max(W, Math.min(E, w0 - dx * signX)), e1 = Math.max(W, Math.min(E, e0 + dx * signX)); - if (signY) n1 = Math.max(N, Math.min(S, n0 - dy * signY)), s1 = Math.max(N, Math.min(S, s0 + dy * signY)); + if (signX) w1 = max$2(W, min$1(E, w0 - dx * signX)), e1 = max$2(W, min$1(E, e0 + dx * signX)); + if (signY) n1 = max$2(N, min$1(S, n0 - dy * signY)), s1 = max$2(N, min$1(S, s0 + dy * signY)); break; } } @@ -4791,29 +5451,29 @@ function brush$1(dim) { || selection[1][1] !== s1) { state.selection = [[w1, n1], [e1, s1]]; redraw.call(that); - emit.brush(); + emit.brush(event, mode.name); } } - function ended() { - nopropagation$1(); - if (exports.event.touches) { - if (exports.event.touches.length) return; + function ended(event) { + nopropagation$1(event); + if (event.touches) { + if (event.touches.length) return; if (touchending) clearTimeout(touchending); touchending = setTimeout(function() { touchending = null; }, 500); // Ghost clicks are delayed! } else { - yesdrag(exports.event.view, moving); + yesdrag(event.view, moving); view.on("keydown.brush keyup.brush mousemove.brush mouseup.brush", null); } group.attr("pointer-events", "all"); overlay.attr("cursor", cursors.overlay); if (state.selection) selection = state.selection; // May be set by brush.move (on start)! - if (empty$1(selection)) state.selection = null, redraw.call(that); - emit.end(); + if (empty(selection)) state.selection = null, redraw.call(that); + emit.end(event, mode.name); } - function keydowned() { - switch (exports.event.keyCode) { + function keydowned(event) { + switch (event.keyCode) { case 16: { // SHIFT shifting = signX && signY; break; @@ -4839,11 +5499,11 @@ function brush$1(dim) { } default: return; } - noevent$1(); + noevent$1(event); } - function keyupped() { - switch (exports.event.keyCode) { + function keyupped(event) { + switch (event.keyCode) { case 16: { // SHIFT if (shifting) { lockX = lockY = shifting = false; @@ -4862,7 +5522,7 @@ function brush$1(dim) { } case 32: { // SPACE if (mode === MODE_SPACE) { - if (exports.event.altKey) { + if (event.altKey) { if (signX) e0 = e1 - dx * signX, w0 = w1 + dx * signX; if (signY) s0 = s1 - dy * signY, n0 = n1 + dy * signY; mode = MODE_CENTER; @@ -4878,16 +5538,16 @@ function brush$1(dim) { } default: return; } - noevent$1(); + noevent$1(event); } } - function touchmoved() { - emitter(this, arguments).moved(); + function touchmoved(event) { + emitter(this, arguments).moved(event); } - function touchended() { - emitter(this, arguments).ended(); + function touchended(event) { + emitter(this, arguments).ended(event); } function initialize() { @@ -4898,15 +5558,15 @@ function brush$1(dim) { } brush.extent = function(_) { - return arguments.length ? (extent = typeof _ === "function" ? _ : constant$4(number2(_)), brush) : extent; + return arguments.length ? (extent = typeof _ === "function" ? _ : constant$7(number2(_)), brush) : extent; }; brush.filter = function(_) { - return arguments.length ? (filter = typeof _ === "function" ? _ : constant$4(!!_), brush) : filter; + return arguments.length ? (filter = typeof _ === "function" ? _ : constant$7(!!_), brush) : filter; }; brush.touchable = function(_) { - return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$4(!!_), brush) : touchable; + return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$7(!!_), brush) : touchable; }; brush.handleSize = function(_) { @@ -4925,12 +5585,18 @@ function brush$1(dim) { return brush; } -var cos = Math.cos; -var sin = Math.sin; -var pi$1 = Math.PI; -var halfPi$1 = pi$1 / 2; -var tau$1 = pi$1 * 2; +var abs$2 = Math.abs; +var cos$2 = Math.cos; +var sin$2 = Math.sin; +var pi$3 = Math.PI; +var halfPi$2 = pi$3 / 2; +var tau$4 = pi$3 * 2; var max$1 = Math.max; +var epsilon$4 = 1e-12; + +function range$1(i, j) { + return Array.from({length: j - i}, (_, k) => i + k); +} function compareValue(compare) { return function(a, b) { @@ -4942,6 +5608,18 @@ function compareValue(compare) { } function chord() { + return chord$1(false, false); +} + +function chordTranspose() { + return chord$1(false, true); +} + +function chordDirected() { + return chord$1(true, false); +} + +function chord$1(directed, transpose) { var padAngle = 0, sortGroups = null, sortSubgroups = null, @@ -4949,86 +5627,72 @@ function chord() { function chord(matrix) { var n = matrix.length, - groupSums = [], - groupIndex = sequence(n), - subgroupIndex = [], - chords = [], - groups = chords.groups = new Array(n), - subgroups = new Array(n * n), - k, - x, - x0, - dx, - i, - j; - - // Compute the sum. - k = 0, i = -1; while (++i < n) { - x = 0, j = -1; while (++j < n) { - x += matrix[i][j]; - } - groupSums.push(x); - subgroupIndex.push(sequence(n)); - k += x; - } - - // Sort groups… - if (sortGroups) groupIndex.sort(function(a, b) { - return sortGroups(groupSums[a], groupSums[b]); - }); - - // Sort subgroups… - if (sortSubgroups) subgroupIndex.forEach(function(d, i) { - d.sort(function(a, b) { - return sortSubgroups(matrix[i][a], matrix[i][b]); - }); - }); - - // Convert the sum to scaling factor for [0, 2pi]. - // TODO Allow start and end angle to be specified? - // TODO Allow padding to be specified as percentage? - k = max$1(0, tau$1 - padAngle * n) / k; - dx = k ? padAngle : tau$1 / n; - - // Compute the start and end angle for each group and subgroup. - // Note: Opera has a bug reordering object literal properties! - x = 0, i = -1; while (++i < n) { - x0 = x, j = -1; while (++j < n) { - var di = groupIndex[i], - dj = subgroupIndex[di][j], - v = matrix[di][dj], - a0 = x, - a1 = x += v * k; - subgroups[dj * n + di] = { - index: di, - subindex: dj, - startAngle: a0, - endAngle: a1, - value: v - }; - } - groups[di] = { - index: di, - startAngle: x0, - endAngle: x, - value: groupSums[di] - }; - x += dx; - } - - // Generate chords for each (non-empty) subgroup-subgroup link. - i = -1; while (++i < n) { - j = i - 1; while (++j < n) { - var source = subgroups[j * n + i], - target = subgroups[i * n + j]; - if (source.value || target.value) { - chords.push(source.value < target.value - ? {source: target, target: source} - : {source: source, target: target}); + groupSums = new Array(n), + groupIndex = range$1(0, n), + chords = new Array(n * n), + groups = new Array(n), + k = 0, dx; + + matrix = Float64Array.from({length: n * n}, transpose + ? (_, i) => matrix[i % n][i / n | 0] + : (_, i) => matrix[i / n | 0][i % n]); + + // Compute the scaling factor from value to angle in [0, 2pi]. + for (let i = 0; i < n; ++i) { + let x = 0; + for (let j = 0; j < n; ++j) x += matrix[i * n + j] + directed * matrix[j * n + i]; + k += groupSums[i] = x; + } + k = max$1(0, tau$4 - padAngle * n) / k; + dx = k ? padAngle : tau$4 / n; + + // Compute the angles for each group and constituent chord. + { + let x = 0; + if (sortGroups) groupIndex.sort((a, b) => sortGroups(groupSums[a], groupSums[b])); + for (const i of groupIndex) { + const x0 = x; + if (directed) { + const subgroupIndex = range$1(~n + 1, n).filter(j => j < 0 ? matrix[~j * n + i] : matrix[i * n + j]); + if (sortSubgroups) subgroupIndex.sort((a, b) => sortSubgroups(a < 0 ? -matrix[~a * n + i] : matrix[i * n + a], b < 0 ? -matrix[~b * n + i] : matrix[i * n + b])); + for (const j of subgroupIndex) { + if (j < 0) { + const chord = chords[~j * n + i] || (chords[~j * n + i] = {source: null, target: null}); + chord.target = {index: i, startAngle: x, endAngle: x += matrix[~j * n + i] * k, value: matrix[~j * n + i]}; + } else { + const chord = chords[i * n + j] || (chords[i * n + j] = {source: null, target: null}); + chord.source = {index: i, startAngle: x, endAngle: x += matrix[i * n + j] * k, value: matrix[i * n + j]}; + } + } + groups[i] = {index: i, startAngle: x0, endAngle: x, value: groupSums[i]}; + } else { + const subgroupIndex = range$1(0, n).filter(j => matrix[i * n + j] || matrix[j * n + i]); + if (sortSubgroups) subgroupIndex.sort((a, b) => sortSubgroups(matrix[i * n + a], matrix[i * n + b])); + for (const j of subgroupIndex) { + let chord; + if (i < j) { + chord = chords[i * n + j] || (chords[i * n + j] = {source: null, target: null}); + chord.source = {index: i, startAngle: x, endAngle: x += matrix[i * n + j] * k, value: matrix[i * n + j]}; + } else { + chord = chords[j * n + i] || (chords[j * n + i] = {source: null, target: null}); + chord.target = {index: i, startAngle: x, endAngle: x += matrix[i * n + j] * k, value: matrix[i * n + j]}; + if (i === j) chord.source = chord.target; + } + if (chord.source && chord.target && chord.source.value < chord.target.value) { + const source = chord.source; + chord.source = chord.target; + chord.target = source; + } + } + groups[i] = {index: i, startAngle: x0, endAngle: x, value: groupSums[i]}; } + x += dx; } } + // Remove empty chords. + chords = Object.values(chords); + chords.groups = groups; return sortChords ? chords.sort(sortChords) : chords; } @@ -5051,31 +5715,23 @@ function chord() { return chord; } -var slice$2 = Array.prototype.slice; - -function constant$5(x) { - return function() { - return x; - }; -} - -var pi$2 = Math.PI, - tau$2 = 2 * pi$2, - epsilon$1 = 1e-6, - tauEpsilon = tau$2 - epsilon$1; +const pi$2 = Math.PI, + tau$3 = 2 * pi$2, + epsilon$3 = 1e-6, + tauEpsilon = tau$3 - epsilon$3; -function Path() { +function Path$1() { this._x0 = this._y0 = // start of current subpath this._x1 = this._y1 = null; // end of current subpath this._ = ""; } function path() { - return new Path; + return new Path$1; } -Path.prototype = path.prototype = { - constructor: Path, +Path$1.prototype = path.prototype = { + constructor: Path$1, moveTo: function(x, y) { this._ += "M" + (this._x0 = this._x1 = +x) + "," + (this._y0 = this._y1 = +y); }, @@ -5113,12 +5769,12 @@ Path.prototype = path.prototype = { } // Or, is (x1,y1) coincident with (x0,y0)? Do nothing. - else if (!(l01_2 > epsilon$1)); + else if (!(l01_2 > epsilon$3)); // Or, are (x0,y0), (x1,y1) and (x2,y2) collinear? // Equivalently, is (x1,y1) coincident with (x2,y2)? // Or, is the radius zero? Line to (x1,y1). - else if (!(Math.abs(y01 * x21 - y21 * x01) > epsilon$1) || !r) { + else if (!(Math.abs(y01 * x21 - y21 * x01) > epsilon$3) || !r) { this._ += "L" + (this._x1 = x1) + "," + (this._y1 = y1); } @@ -5135,7 +5791,7 @@ Path.prototype = path.prototype = { t21 = l / l21; // If the start tangent is not coincident with (x0,y0), line to. - if (Math.abs(t01 - 1) > epsilon$1) { + if (Math.abs(t01 - 1) > epsilon$3) { this._ += "L" + (x1 + t01 * x01) + "," + (y1 + t01 * y01); } @@ -5160,7 +5816,7 @@ Path.prototype = path.prototype = { } // Or, is (x0,y0) not coincident with the previous point? Line to (x0,y0). - else if (Math.abs(this._x1 - x0) > epsilon$1 || Math.abs(this._y1 - y0) > epsilon$1) { + else if (Math.abs(this._x1 - x0) > epsilon$3 || Math.abs(this._y1 - y0) > epsilon$3) { this._ += "L" + x0 + "," + y0; } @@ -5168,7 +5824,7 @@ Path.prototype = path.prototype = { if (!r) return; // Does the angle go the wrong way? Flip the direction. - if (da < 0) da = da % tau$2 + tau$2; + if (da < 0) da = da % tau$3 + tau$3; // Is this a complete circle? Draw two arcs to complete the circle. if (da > tauEpsilon) { @@ -5176,7 +5832,7 @@ Path.prototype = path.prototype = { } // Is this arc non-empty? Draw an arc! - else if (da > epsilon$1) { + else if (da > epsilon$3) { this._ += "A" + r + "," + r + ",0," + (+(da >= pi$2)) + "," + cw + "," + (this._x1 = x + r * Math.cos(a1)) + "," + (this._y1 = y + r * Math.sin(a1)); } }, @@ -5188,7 +5844,15 @@ Path.prototype = path.prototype = { } }; -function defaultSource(d) { +var slice$2 = Array.prototype.slice; + +function constant$6(x) { + return function() { + return x; + }; +} + +function defaultSource$1(d) { return d.source; } @@ -5196,7 +5860,7 @@ function defaultTarget(d) { return d.target; } -function defaultRadius(d) { +function defaultRadius$1(d) { return d.radius; } @@ -5208,52 +5872,91 @@ function defaultEndAngle(d) { return d.endAngle; } -function ribbon() { - var source = defaultSource, +function defaultPadAngle() { + return 0; +} + +function defaultArrowheadRadius() { + return 10; +} + +function ribbon(headRadius) { + var source = defaultSource$1, target = defaultTarget, - radius = defaultRadius, + sourceRadius = defaultRadius$1, + targetRadius = defaultRadius$1, startAngle = defaultStartAngle, endAngle = defaultEndAngle, + padAngle = defaultPadAngle, context = null; function ribbon() { var buffer, + s = source.apply(this, arguments), + t = target.apply(this, arguments), + ap = padAngle.apply(this, arguments) / 2, argv = slice$2.call(arguments), - s = source.apply(this, argv), - t = target.apply(this, argv), - sr = +radius.apply(this, (argv[0] = s, argv)), - sa0 = startAngle.apply(this, argv) - halfPi$1, - sa1 = endAngle.apply(this, argv) - halfPi$1, - sx0 = sr * cos(sa0), - sy0 = sr * sin(sa0), - tr = +radius.apply(this, (argv[0] = t, argv)), - ta0 = startAngle.apply(this, argv) - halfPi$1, - ta1 = endAngle.apply(this, argv) - halfPi$1; + sr = +sourceRadius.apply(this, (argv[0] = s, argv)), + sa0 = startAngle.apply(this, argv) - halfPi$2, + sa1 = endAngle.apply(this, argv) - halfPi$2, + tr = +targetRadius.apply(this, (argv[0] = t, argv)), + ta0 = startAngle.apply(this, argv) - halfPi$2, + ta1 = endAngle.apply(this, argv) - halfPi$2; if (!context) context = buffer = path(); - context.moveTo(sx0, sy0); + if (ap > epsilon$4) { + if (abs$2(sa1 - sa0) > ap * 2 + epsilon$4) sa1 > sa0 ? (sa0 += ap, sa1 -= ap) : (sa0 -= ap, sa1 += ap); + else sa0 = sa1 = (sa0 + sa1) / 2; + if (abs$2(ta1 - ta0) > ap * 2 + epsilon$4) ta1 > ta0 ? (ta0 += ap, ta1 -= ap) : (ta0 -= ap, ta1 += ap); + else ta0 = ta1 = (ta0 + ta1) / 2; + } + + context.moveTo(sr * cos$2(sa0), sr * sin$2(sa0)); context.arc(0, 0, sr, sa0, sa1); - if (sa0 !== ta0 || sa1 !== ta1) { // TODO sr !== tr? - context.quadraticCurveTo(0, 0, tr * cos(ta0), tr * sin(ta0)); - context.arc(0, 0, tr, ta0, ta1); + if (sa0 !== ta0 || sa1 !== ta1) { + if (headRadius) { + var hr = +headRadius.apply(this, arguments), tr2 = tr - hr, ta2 = (ta0 + ta1) / 2; + context.quadraticCurveTo(0, 0, tr2 * cos$2(ta0), tr2 * sin$2(ta0)); + context.lineTo(tr * cos$2(ta2), tr * sin$2(ta2)); + context.lineTo(tr2 * cos$2(ta1), tr2 * sin$2(ta1)); + } else { + context.quadraticCurveTo(0, 0, tr * cos$2(ta0), tr * sin$2(ta0)); + context.arc(0, 0, tr, ta0, ta1); + } } - context.quadraticCurveTo(0, 0, sx0, sy0); + context.quadraticCurveTo(0, 0, sr * cos$2(sa0), sr * sin$2(sa0)); context.closePath(); if (buffer) return context = null, buffer + "" || null; } + if (headRadius) ribbon.headRadius = function(_) { + return arguments.length ? (headRadius = typeof _ === "function" ? _ : constant$6(+_), ribbon) : headRadius; + }; + ribbon.radius = function(_) { - return arguments.length ? (radius = typeof _ === "function" ? _ : constant$5(+_), ribbon) : radius; + return arguments.length ? (sourceRadius = targetRadius = typeof _ === "function" ? _ : constant$6(+_), ribbon) : sourceRadius; + }; + + ribbon.sourceRadius = function(_) { + return arguments.length ? (sourceRadius = typeof _ === "function" ? _ : constant$6(+_), ribbon) : sourceRadius; + }; + + ribbon.targetRadius = function(_) { + return arguments.length ? (targetRadius = typeof _ === "function" ? _ : constant$6(+_), ribbon) : targetRadius; }; ribbon.startAngle = function(_) { - return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$5(+_), ribbon) : startAngle; + return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$6(+_), ribbon) : startAngle; }; ribbon.endAngle = function(_) { - return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$5(+_), ribbon) : endAngle; + return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$6(+_), ribbon) : endAngle; + }; + + ribbon.padAngle = function(_) { + return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant$6(+_), ribbon) : padAngle; }; ribbon.source = function(_) { @@ -5271,227 +5974,31 @@ function ribbon() { return ribbon; } -var prefix = "$"; - -function Map() {} - -Map.prototype = map$1.prototype = { - constructor: Map, - has: function(key) { - return (prefix + key) in this; - }, - get: function(key) { - return this[prefix + key]; - }, - set: function(key, value) { - this[prefix + key] = value; - return this; - }, - remove: function(key) { - var property = prefix + key; - return property in this && delete this[property]; - }, - clear: function() { - for (var property in this) if (property[0] === prefix) delete this[property]; - }, - keys: function() { - var keys = []; - for (var property in this) if (property[0] === prefix) keys.push(property.slice(1)); - return keys; - }, - values: function() { - var values = []; - for (var property in this) if (property[0] === prefix) values.push(this[property]); - return values; - }, - entries: function() { - var entries = []; - for (var property in this) if (property[0] === prefix) entries.push({key: property.slice(1), value: this[property]}); - return entries; - }, - size: function() { - var size = 0; - for (var property in this) if (property[0] === prefix) ++size; - return size; - }, - empty: function() { - for (var property in this) if (property[0] === prefix) return false; - return true; - }, - each: function(f) { - for (var property in this) if (property[0] === prefix) f(this[property], property.slice(1), this); - } -}; - -function map$1(object, f) { - var map = new Map; - - // Copy constructor. - if (object instanceof Map) object.each(function(value, key) { map.set(key, value); }); - - // Index array by numeric index or specified key function. - else if (Array.isArray(object)) { - var i = -1, - n = object.length, - o; - - if (f == null) while (++i < n) map.set(i, object[i]); - else while (++i < n) map.set(f(o = object[i], i, object), o); - } - - // Convert object to map. - else if (object) for (var key in object) map.set(key, object[key]); - - return map; -} - -function nest() { - var keys = [], - sortKeys = [], - sortValues, - rollup, - nest; - - function apply(array, depth, createResult, setResult) { - if (depth >= keys.length) { - if (sortValues != null) array.sort(sortValues); - return rollup != null ? rollup(array) : array; - } - - var i = -1, - n = array.length, - key = keys[depth++], - keyValue, - value, - valuesByKey = map$1(), - values, - result = createResult(); - - while (++i < n) { - if (values = valuesByKey.get(keyValue = key(value = array[i]) + "")) { - values.push(value); - } else { - valuesByKey.set(keyValue, [value]); - } - } - - valuesByKey.each(function(values, key) { - setResult(result, key, apply(values, depth, createResult, setResult)); - }); - - return result; - } - - function entries(map, depth) { - if (++depth > keys.length) return map; - var array, sortKey = sortKeys[depth - 1]; - if (rollup != null && depth >= keys.length) array = map.entries(); - else array = [], map.each(function(v, k) { array.push({key: k, values: entries(v, depth)}); }); - return sortKey != null ? array.sort(function(a, b) { return sortKey(a.key, b.key); }) : array; - } - - return nest = { - object: function(array) { return apply(array, 0, createObject, setObject); }, - map: function(array) { return apply(array, 0, createMap, setMap); }, - entries: function(array) { return entries(apply(array, 0, createMap, setMap), 0); }, - key: function(d) { keys.push(d); return nest; }, - sortKeys: function(order) { sortKeys[keys.length - 1] = order; return nest; }, - sortValues: function(order) { sortValues = order; return nest; }, - rollup: function(f) { rollup = f; return nest; } - }; -} - -function createObject() { - return {}; -} - -function setObject(object, key, value) { - object[key] = value; -} - -function createMap() { - return map$1(); -} - -function setMap(map, key, value) { - map.set(key, value); -} - -function Set() {} - -var proto = map$1.prototype; - -Set.prototype = set$2.prototype = { - constructor: Set, - has: proto.has, - add: function(value) { - value += ""; - this[prefix + value] = value; - return this; - }, - remove: proto.remove, - clear: proto.clear, - values: proto.keys, - size: proto.size, - empty: proto.empty, - each: proto.each -}; - -function set$2(object, f) { - var set = new Set; - - // Copy constructor. - if (object instanceof Set) object.each(function(value) { set.add(value); }); - - // Otherwise, assume it’s an array. - else if (object) { - var i = -1, n = object.length; - if (f == null) while (++i < n) set.add(object[i]); - else while (++i < n) set.add(f(object[i], i, object)); - } - - return set; -} - -function keys(map) { - var keys = []; - for (var key in map) keys.push(key); - return keys; +function ribbon$1() { + return ribbon(); } -function values(map) { - var values = []; - for (var key in map) values.push(map[key]); - return values; -} - -function entries(map) { - var entries = []; - for (var key in map) entries.push({key: key, value: map[key]}); - return entries; +function ribbonArrow() { + return ribbon(defaultArrowheadRadius); } var array$2 = Array.prototype; -var slice$3 = array$2.slice; +var slice$1 = array$2.slice; -function ascending$2(a, b) { +function ascending$1(a, b) { return a - b; } -function area(ring) { +function area$3(ring) { var i = 0, n = ring.length, area = ring[n - 1][1] * ring[0][0] - ring[n - 1][0] * ring[0][1]; while (++i < n) area += ring[i - 1][1] * ring[i][0] - ring[i - 1][0] * ring[i][1]; return area; } -function constant$6(x) { - return function() { - return x; - }; -} +var constant$5 = x => () => x; -function contains(ring, hole) { +function contains$2(ring, hole) { var i = -1, n = hole.length, c; while (++i < n) if (c = ringContains(ring, hole[i])) return c; return 0; @@ -5508,10 +6015,10 @@ function ringContains(ring, point) { } function segmentContains(a, b, c) { - var i; return collinear(a, b, c) && within(a[i = +(a[0] === b[0])], c[i], b[i]); + var i; return collinear$1(a, b, c) && within(a[i = +(a[0] === b[0])], c[i], b[i]); } -function collinear(a, b, c) { +function collinear$1(a, b, c) { return (b[0] - a[0]) * (c[1] - a[1]) === (c[0] - a[0]) * (b[1] - a[1]); } @@ -5519,7 +6026,7 @@ function within(p, q, r) { return p <= q && q <= r || r <= q && q <= p; } -function noop$1() {} +function noop$2() {} var cases = [ [], @@ -5551,11 +6058,11 @@ function contours() { // Convert number of thresholds into uniform thresholds. if (!Array.isArray(tz)) { - var domain = extent(values), start = domain[0], stop = domain[1]; + var domain = extent$1(values), start = domain[0], stop = domain[1]; tz = tickStep(start, stop, tz); tz = sequence(Math.floor(start / tz) * tz, Math.floor(stop / tz) * tz, tz); } else { - tz = tz.slice().sort(ascending$2); + tz = tz.slice().sort(ascending$1); } return tz.map(function(value) { @@ -5571,13 +6078,13 @@ function contours() { isorings(values, value, function(ring) { smooth(ring, values, value); - if (area(ring) > 0) polygons.push([ring]); + if (area$3(ring) > 0) polygons.push([ring]); else holes.push(ring); }); holes.forEach(function(hole) { for (var i = 0, n = polygons.length, polygon; i < n; ++i) { - if (contains((polygon = polygons[i])[0], hole) !== -1) { + if (contains$2((polygon = polygons[i])[0], hole) !== -1) { polygon.push(hole); return; } @@ -5701,17 +6208,17 @@ function contours() { contours.size = function(_) { if (!arguments.length) return [dx, dy]; - var _0 = Math.ceil(_[0]), _1 = Math.ceil(_[1]); - if (!(_0 > 0) || !(_1 > 0)) throw new Error("invalid size"); + var _0 = Math.floor(_[0]), _1 = Math.floor(_[1]); + if (!(_0 >= 0 && _1 >= 0)) throw new Error("invalid size"); return dx = _0, dy = _1, contours; }; contours.thresholds = function(_) { - return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant$6(slice$3.call(_)) : constant$6(_), contours) : threshold; + return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant$5(slice$1.call(_)) : constant$5(_), contours) : threshold; }; contours.smooth = function(_) { - return arguments.length ? (smooth = _ ? smoothLinear : noop$1, contours) : smooth === smoothLinear; + return arguments.length ? (smooth = _ ? smoothLinear : noop$2, contours) : smooth === smoothLinear; }; return contours; @@ -5761,11 +6268,11 @@ function blurY(source, target, r) { } } -function defaultX(d) { +function defaultX$1(d) { return d[0]; } -function defaultY(d) { +function defaultY$1(d) { return d[1]; } @@ -5774,8 +6281,8 @@ function defaultWeight() { } function density() { - var x = defaultX, - y = defaultY, + var x = defaultX$1, + y = defaultY$1, weight = defaultWeight, dx = 960, dy = 500, @@ -5784,7 +6291,7 @@ function density() { o = r * 3, // grid offset, to pad for blur n = (dx + o * 2) >> k, // grid width m = (dy + o * 2) >> k, // grid height - threshold = constant$6(20); + threshold = constant$5(20); function density(data) { var values0 = new Float32Array(n * m), @@ -5811,7 +6318,7 @@ function density() { // Convert number of thresholds into uniform thresholds. if (!Array.isArray(tz)) { - var stop = max(values0); + var stop = max$3(values0); tz = tickStep(0, stop, tz); tz = sequence(0, Math.floor(stop / tz) * tz, tz); tz.shift(); @@ -5852,21 +6359,21 @@ function density() { } density.x = function(_) { - return arguments.length ? (x = typeof _ === "function" ? _ : constant$6(+_), density) : x; + return arguments.length ? (x = typeof _ === "function" ? _ : constant$5(+_), density) : x; }; density.y = function(_) { - return arguments.length ? (y = typeof _ === "function" ? _ : constant$6(+_), density) : y; + return arguments.length ? (y = typeof _ === "function" ? _ : constant$5(+_), density) : y; }; density.weight = function(_) { - return arguments.length ? (weight = typeof _ === "function" ? _ : constant$6(+_), density) : weight; + return arguments.length ? (weight = typeof _ === "function" ? _ : constant$5(+_), density) : weight; }; density.size = function(_) { if (!arguments.length) return [dx, dy]; - var _0 = Math.ceil(_[0]), _1 = Math.ceil(_[1]); - if (!(_0 >= 0) && !(_0 >= 0)) throw new Error("invalid size"); + var _0 = +_[0], _1 = +_[1]; + if (!(_0 >= 0 && _1 >= 0)) throw new Error("invalid size"); return dx = _0, dy = _1, resize(); }; @@ -5877,7 +6384,7 @@ function density() { }; density.thresholds = function(_) { - return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant$6(slice$3.call(_)) : constant$6(_), density) : threshold; + return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant$5(slice$1.call(_)) : constant$5(_), density) : threshold; }; density.bandwidth = function(_) { @@ -5889,4279 +6396,5374 @@ function density() { return density; } -var EOL = {}, - EOF = {}, - QUOTE = 34, - NEWLINE = 10, - RETURN = 13; +const EPSILON = Math.pow(2, -52); +const EDGE_STACK = new Uint32Array(512); -function objectConverter(columns) { - return new Function("d", "return {" + columns.map(function(name, i) { - return JSON.stringify(name) + ": d[" + i + "] || \"\""; - }).join(",") + "}"); -} +class Delaunator { -function customConverter(columns, f) { - var object = objectConverter(columns); - return function(row, i) { - return f(object(row), i, columns); - }; -} + static from(points, getX = defaultGetX, getY = defaultGetY) { + const n = points.length; + const coords = new Float64Array(n * 2); -// Compute unique columns in order of discovery. -function inferColumns(rows) { - var columnSet = Object.create(null), - columns = []; + for (let i = 0; i < n; i++) { + const p = points[i]; + coords[2 * i] = getX(p); + coords[2 * i + 1] = getY(p); + } - rows.forEach(function(row) { - for (var column in row) { - if (!(column in columnSet)) { - columns.push(columnSet[column] = column); - } + return new Delaunator(coords); } - }); - return columns; -} + constructor(coords) { + const n = coords.length >> 1; + if (n > 0 && typeof coords[0] !== 'number') throw new Error('Expected coords to contain numbers.'); -function pad(value, width) { - var s = value + "", length = s.length; - return length < width ? new Array(width - length + 1).join(0) + s : s; -} + this.coords = coords; -function formatYear(year) { - return year < 0 ? "-" + pad(-year, 6) - : year > 9999 ? "+" + pad(year, 6) - : pad(year, 4); -} + // arrays that will store the triangulation graph + const maxTriangles = Math.max(2 * n - 5, 0); + this._triangles = new Uint32Array(maxTriangles * 3); + this._halfedges = new Int32Array(maxTriangles * 3); -function formatDate(date) { - var hours = date.getUTCHours(), - minutes = date.getUTCMinutes(), - seconds = date.getUTCSeconds(), - milliseconds = date.getUTCMilliseconds(); - return isNaN(date) ? "Invalid Date" - : formatYear(date.getUTCFullYear()) + "-" + pad(date.getUTCMonth() + 1, 2) + "-" + pad(date.getUTCDate(), 2) - + (milliseconds ? "T" + pad(hours, 2) + ":" + pad(minutes, 2) + ":" + pad(seconds, 2) + "." + pad(milliseconds, 3) + "Z" - : seconds ? "T" + pad(hours, 2) + ":" + pad(minutes, 2) + ":" + pad(seconds, 2) + "Z" - : minutes || hours ? "T" + pad(hours, 2) + ":" + pad(minutes, 2) + "Z" - : ""); -} + // temporary arrays for tracking the edges of the advancing convex hull + this._hashSize = Math.ceil(Math.sqrt(n)); + this._hullPrev = new Uint32Array(n); // edge to prev edge + this._hullNext = new Uint32Array(n); // edge to next edge + this._hullTri = new Uint32Array(n); // edge to adjacent triangle + this._hullHash = new Int32Array(this._hashSize).fill(-1); // angular edge hash -function dsvFormat(delimiter) { - var reFormat = new RegExp("[\"" + delimiter + "\n\r]"), - DELIMITER = delimiter.charCodeAt(0); + // temporary arrays for sorting points + this._ids = new Uint32Array(n); + this._dists = new Float64Array(n); - function parse(text, f) { - var convert, columns, rows = parseRows(text, function(row, i) { - if (convert) return convert(row, i - 1); - columns = row, convert = f ? customConverter(row, f) : objectConverter(row); - }); - rows.columns = columns || []; - return rows; - } - - function parseRows(text, f) { - var rows = [], // output rows - N = text.length, - I = 0, // current character index - n = 0, // current line number - t, // current token - eof = N <= 0, // current token followed by EOF? - eol = false; // current token followed by EOL? + this.update(); + } - // Strip the trailing newline. - if (text.charCodeAt(N - 1) === NEWLINE) --N; - if (text.charCodeAt(N - 1) === RETURN) --N; + update() { + const {coords, _hullPrev: hullPrev, _hullNext: hullNext, _hullTri: hullTri, _hullHash: hullHash} = this; + const n = coords.length >> 1; - function token() { - if (eof) return EOF; - if (eol) return eol = false, EOL; + // populate an array of point indices; calculate input data bbox + let minX = Infinity; + let minY = Infinity; + let maxX = -Infinity; + let maxY = -Infinity; - // Unescape quotes. - var i, j = I, c; - if (text.charCodeAt(j) === QUOTE) { - while (I++ < N && text.charCodeAt(I) !== QUOTE || text.charCodeAt(++I) === QUOTE); - if ((i = I) >= N) eof = true; - else if ((c = text.charCodeAt(I++)) === NEWLINE) eol = true; - else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; } - return text.slice(j + 1, i - 1).replace(/""/g, "\""); - } + for (let i = 0; i < n; i++) { + const x = coords[2 * i]; + const y = coords[2 * i + 1]; + if (x < minX) minX = x; + if (y < minY) minY = y; + if (x > maxX) maxX = x; + if (y > maxY) maxY = y; + this._ids[i] = i; + } + const cx = (minX + maxX) / 2; + const cy = (minY + maxY) / 2; + + let minDist = Infinity; + let i0, i1, i2; + + // pick a seed point close to the center + for (let i = 0; i < n; i++) { + const d = dist(cx, cy, coords[2 * i], coords[2 * i + 1]); + if (d < minDist) { + i0 = i; + minDist = d; + } + } + const i0x = coords[2 * i0]; + const i0y = coords[2 * i0 + 1]; + + minDist = Infinity; + + // find the point closest to the seed + for (let i = 0; i < n; i++) { + if (i === i0) continue; + const d = dist(i0x, i0y, coords[2 * i], coords[2 * i + 1]); + if (d < minDist && d > 0) { + i1 = i; + minDist = d; + } + } + let i1x = coords[2 * i1]; + let i1y = coords[2 * i1 + 1]; + + let minRadius = Infinity; + + // find the third point which forms the smallest circumcircle with the first two + for (let i = 0; i < n; i++) { + if (i === i0 || i === i1) continue; + const r = circumradius(i0x, i0y, i1x, i1y, coords[2 * i], coords[2 * i + 1]); + if (r < minRadius) { + i2 = i; + minRadius = r; + } + } + let i2x = coords[2 * i2]; + let i2y = coords[2 * i2 + 1]; + + if (minRadius === Infinity) { + // order collinear points by dx (or dy if all x are identical) + // and return the list as a hull + for (let i = 0; i < n; i++) { + this._dists[i] = (coords[2 * i] - coords[0]) || (coords[2 * i + 1] - coords[1]); + } + quicksort(this._ids, this._dists, 0, n - 1); + const hull = new Uint32Array(n); + let j = 0; + for (let i = 0, d0 = -Infinity; i < n; i++) { + const id = this._ids[i]; + if (this._dists[id] > d0) { + hull[j++] = id; + d0 = this._dists[id]; + } + } + this.hull = hull.subarray(0, j); + this.triangles = new Uint32Array(0); + this.halfedges = new Uint32Array(0); + return; + } - // Find next delimiter or newline. - while (I < N) { - if ((c = text.charCodeAt(i = I++)) === NEWLINE) eol = true; - else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; } - else if (c !== DELIMITER) continue; - return text.slice(j, i); - } + // swap the order of the seed points for counter-clockwise orientation + if (orient(i0x, i0y, i1x, i1y, i2x, i2y)) { + const i = i1; + const x = i1x; + const y = i1y; + i1 = i2; + i1x = i2x; + i1y = i2y; + i2 = i; + i2x = x; + i2y = y; + } - // Return last token before EOF. - return eof = true, text.slice(j, N); - } + const center = circumcenter(i0x, i0y, i1x, i1y, i2x, i2y); + this._cx = center.x; + this._cy = center.y; - while ((t = token()) !== EOF) { - var row = []; - while (t !== EOL && t !== EOF) row.push(t), t = token(); - if (f && (row = f(row, n++)) == null) continue; - rows.push(row); - } + for (let i = 0; i < n; i++) { + this._dists[i] = dist(coords[2 * i], coords[2 * i + 1], center.x, center.y); + } - return rows; - } + // sort the points by distance from the seed triangle circumcenter + quicksort(this._ids, this._dists, 0, n - 1); - function preformatBody(rows, columns) { - return rows.map(function(row) { - return columns.map(function(column) { - return formatValue(row[column]); - }).join(delimiter); - }); - } + // set up the seed triangle as the starting hull + this._hullStart = i0; + let hullSize = 3; - function format(rows, columns) { - if (columns == null) columns = inferColumns(rows); - return [columns.map(formatValue).join(delimiter)].concat(preformatBody(rows, columns)).join("\n"); - } + hullNext[i0] = hullPrev[i2] = i1; + hullNext[i1] = hullPrev[i0] = i2; + hullNext[i2] = hullPrev[i1] = i0; - function formatBody(rows, columns) { - if (columns == null) columns = inferColumns(rows); - return preformatBody(rows, columns).join("\n"); - } + hullTri[i0] = 0; + hullTri[i1] = 1; + hullTri[i2] = 2; - function formatRows(rows) { - return rows.map(formatRow).join("\n"); - } + hullHash.fill(-1); + hullHash[this._hashKey(i0x, i0y)] = i0; + hullHash[this._hashKey(i1x, i1y)] = i1; + hullHash[this._hashKey(i2x, i2y)] = i2; - function formatRow(row) { - return row.map(formatValue).join(delimiter); - } + this.trianglesLen = 0; + this._addTriangle(i0, i1, i2, -1, -1, -1); - function formatValue(value) { - return value == null ? "" - : value instanceof Date ? formatDate(value) - : reFormat.test(value += "") ? "\"" + value.replace(/"/g, "\"\"") + "\"" - : value; - } + for (let k = 0, xp, yp; k < this._ids.length; k++) { + const i = this._ids[k]; + const x = coords[2 * i]; + const y = coords[2 * i + 1]; - return { - parse: parse, - parseRows: parseRows, - format: format, - formatBody: formatBody, - formatRows: formatRows, - formatRow: formatRow, - formatValue: formatValue - }; -} + // skip near-duplicate points + if (k > 0 && Math.abs(x - xp) <= EPSILON && Math.abs(y - yp) <= EPSILON) continue; + xp = x; + yp = y; -var csv = dsvFormat(","); + // skip seed triangle points + if (i === i0 || i === i1 || i === i2) continue; -var csvParse = csv.parse; -var csvParseRows = csv.parseRows; -var csvFormat = csv.format; -var csvFormatBody = csv.formatBody; -var csvFormatRows = csv.formatRows; -var csvFormatRow = csv.formatRow; -var csvFormatValue = csv.formatValue; + // find a visible edge on the convex hull using edge hash + let start = 0; + for (let j = 0, key = this._hashKey(x, y); j < this._hashSize; j++) { + start = hullHash[(key + j) % this._hashSize]; + if (start !== -1 && start !== hullNext[start]) break; + } -var tsv = dsvFormat("\t"); + start = hullPrev[start]; + let e = start, q; + while (q = hullNext[e], !orient(x, y, coords[2 * e], coords[2 * e + 1], coords[2 * q], coords[2 * q + 1])) { + e = q; + if (e === start) { + e = -1; + break; + } + } + if (e === -1) continue; // likely a near-duplicate point; skip it + + // add the first triangle from the point + let t = this._addTriangle(e, i, hullNext[e], -1, -1, hullTri[e]); + + // recursively flip triangles from the point until they satisfy the Delaunay condition + hullTri[i] = this._legalize(t + 2); + hullTri[e] = t; // keep track of boundary triangles on the hull + hullSize++; + + // walk forward through the hull, adding more triangles and flipping recursively + let n = hullNext[e]; + while (q = hullNext[n], orient(x, y, coords[2 * n], coords[2 * n + 1], coords[2 * q], coords[2 * q + 1])) { + t = this._addTriangle(n, i, q, hullTri[i], -1, hullTri[n]); + hullTri[i] = this._legalize(t + 2); + hullNext[n] = n; // mark as removed + hullSize--; + n = q; + } -var tsvParse = tsv.parse; -var tsvParseRows = tsv.parseRows; -var tsvFormat = tsv.format; -var tsvFormatBody = tsv.formatBody; -var tsvFormatRows = tsv.formatRows; -var tsvFormatRow = tsv.formatRow; -var tsvFormatValue = tsv.formatValue; + // walk backward from the other side, adding more triangles and flipping + if (e === start) { + while (q = hullPrev[e], orient(x, y, coords[2 * q], coords[2 * q + 1], coords[2 * e], coords[2 * e + 1])) { + t = this._addTriangle(q, i, e, -1, hullTri[e], hullTri[q]); + this._legalize(t + 2); + hullTri[q] = t; + hullNext[e] = e; // mark as removed + hullSize--; + e = q; + } + } -function autoType(object) { - for (var key in object) { - var value = object[key].trim(), number, m; - if (!value) value = null; - else if (value === "true") value = true; - else if (value === "false") value = false; - else if (value === "NaN") value = NaN; - else if (!isNaN(number = +value)) value = number; - else if (m = value.match(/^([-+]\d{2})?\d{4}(-\d{2}(-\d{2})?)?(T\d{2}:\d{2}(:\d{2}(\.\d{3})?)?(Z|[-+]\d{2}:\d{2})?)?$/)) { - if (fixtz && !!m[4] && !m[7]) value = value.replace(/-/g, "/").replace(/T/, " "); - value = new Date(value); - } - else continue; - object[key] = value; - } - return object; -} + // update the hull indices + this._hullStart = hullPrev[i] = e; + hullNext[e] = hullPrev[n] = i; + hullNext[i] = n; -// https://github.com/d3/d3-dsv/issues/45 -var fixtz = new Date("2019-01-01T00:00").getHours() || new Date("2019-07-01T00:00").getHours(); + // save the two new edges in the hash table + hullHash[this._hashKey(x, y)] = i; + hullHash[this._hashKey(coords[2 * e], coords[2 * e + 1])] = e; + } -function responseBlob(response) { - if (!response.ok) throw new Error(response.status + " " + response.statusText); - return response.blob(); -} + this.hull = new Uint32Array(hullSize); + for (let i = 0, e = this._hullStart; i < hullSize; i++) { + this.hull[i] = e; + e = hullNext[e]; + } -function blob(input, init) { - return fetch(input, init).then(responseBlob); -} + // trim typed triangle mesh arrays + this.triangles = this._triangles.subarray(0, this.trianglesLen); + this.halfedges = this._halfedges.subarray(0, this.trianglesLen); + } + + _hashKey(x, y) { + return Math.floor(pseudoAngle(x - this._cx, y - this._cy) * this._hashSize) % this._hashSize; + } + + _legalize(a) { + const {_triangles: triangles, _halfedges: halfedges, coords} = this; + + let i = 0; + let ar = 0; + + // recursion eliminated with a fixed-size stack + while (true) { + const b = halfedges[a]; + + /* if the pair of triangles doesn't satisfy the Delaunay condition + * (p1 is inside the circumcircle of [p0, pl, pr]), flip them, + * then do the same check/flip recursively for the new pair of triangles + * + * pl pl + * /||\ / \ + * al/ || \bl al/ \a + * / || \ / \ + * / a||b \ flip /___ar___\ + * p0\ || /p1 => p0\---bl---/p1 + * \ || / \ / + * ar\ || /br b\ /br + * \||/ \ / + * pr pr + */ + const a0 = a - a % 3; + ar = a0 + (a + 2) % 3; + + if (b === -1) { // convex hull edge + if (i === 0) break; + a = EDGE_STACK[--i]; + continue; + } -function responseArrayBuffer(response) { - if (!response.ok) throw new Error(response.status + " " + response.statusText); - return response.arrayBuffer(); -} + const b0 = b - b % 3; + const al = a0 + (a + 1) % 3; + const bl = b0 + (b + 2) % 3; + + const p0 = triangles[ar]; + const pr = triangles[a]; + const pl = triangles[al]; + const p1 = triangles[bl]; + + const illegal = inCircle( + coords[2 * p0], coords[2 * p0 + 1], + coords[2 * pr], coords[2 * pr + 1], + coords[2 * pl], coords[2 * pl + 1], + coords[2 * p1], coords[2 * p1 + 1]); + + if (illegal) { + triangles[a] = p1; + triangles[b] = p0; + + const hbl = halfedges[bl]; + + // edge swapped on the other side of the hull (rare); fix the halfedge reference + if (hbl === -1) { + let e = this._hullStart; + do { + if (this._hullTri[e] === bl) { + this._hullTri[e] = a; + break; + } + e = this._hullPrev[e]; + } while (e !== this._hullStart); + } + this._link(a, hbl); + this._link(b, halfedges[ar]); + this._link(ar, bl); + + const br = b0 + (b + 1) % 3; + + // don't worry about hitting the cap: it can only happen on extremely degenerate input + if (i < EDGE_STACK.length) { + EDGE_STACK[i++] = br; + } + } else { + if (i === 0) break; + a = EDGE_STACK[--i]; + } + } -function buffer(input, init) { - return fetch(input, init).then(responseArrayBuffer); -} + return ar; + } -function responseText(response) { - if (!response.ok) throw new Error(response.status + " " + response.statusText); - return response.text(); -} + _link(a, b) { + this._halfedges[a] = b; + if (b !== -1) this._halfedges[b] = a; + } -function text(input, init) { - return fetch(input, init).then(responseText); -} + // add a new triangle given vertex indices and adjacent half-edge ids + _addTriangle(i0, i1, i2, a, b, c) { + const t = this.trianglesLen; -function dsvParse(parse) { - return function(input, init, row) { - if (arguments.length === 2 && typeof init === "function") row = init, init = undefined; - return text(input, init).then(function(response) { - return parse(response, row); - }); - }; -} + this._triangles[t] = i0; + this._triangles[t + 1] = i1; + this._triangles[t + 2] = i2; -function dsv(delimiter, input, init, row) { - if (arguments.length === 3 && typeof init === "function") row = init, init = undefined; - var format = dsvFormat(delimiter); - return text(input, init).then(function(response) { - return format.parse(response, row); - }); -} + this._link(t, a); + this._link(t + 1, b); + this._link(t + 2, c); -var csv$1 = dsvParse(csvParse); -var tsv$1 = dsvParse(tsvParse); + this.trianglesLen += 3; -function image(input, init) { - return new Promise(function(resolve, reject) { - var image = new Image; - for (var key in init) image[key] = init[key]; - image.onerror = reject; - image.onload = function() { resolve(image); }; - image.src = input; - }); + return t; + } } -function responseJson(response) { - if (!response.ok) throw new Error(response.status + " " + response.statusText); - return response.json(); +// monotonically increases with real angle, but doesn't need expensive trigonometry +function pseudoAngle(dx, dy) { + const p = dx / (Math.abs(dx) + Math.abs(dy)); + return (dy > 0 ? 3 - p : 1 + p) / 4; // [0..1] } -function json(input, init) { - return fetch(input, init).then(responseJson); +function dist(ax, ay, bx, by) { + const dx = ax - bx; + const dy = ay - by; + return dx * dx + dy * dy; } -function parser(type) { - return function(input, init) { - return text(input, init).then(function(text) { - return (new DOMParser).parseFromString(text, type); - }); - }; +// return 2d orientation sign if we're confident in it through J. Shewchuk's error bound check +function orientIfSure(px, py, rx, ry, qx, qy) { + const l = (ry - py) * (qx - px); + const r = (rx - px) * (qy - py); + return Math.abs(l - r) >= 3.3306690738754716e-16 * Math.abs(l + r) ? l - r : 0; } -var xml = parser("application/xml"); +// a more robust orientation test that's stable in a given triangle (to fix robustness issues) +function orient(rx, ry, qx, qy, px, py) { + const sign = orientIfSure(px, py, rx, ry, qx, qy) || + orientIfSure(rx, ry, qx, qy, px, py) || + orientIfSure(qx, qy, px, py, rx, ry); + return sign < 0; +} -var html = parser("text/html"); +function inCircle(ax, ay, bx, by, cx, cy, px, py) { + const dx = ax - px; + const dy = ay - py; + const ex = bx - px; + const ey = by - py; + const fx = cx - px; + const fy = cy - py; -var svg = parser("image/svg+xml"); + const ap = dx * dx + dy * dy; + const bp = ex * ex + ey * ey; + const cp = fx * fx + fy * fy; -function center$1(x, y) { - var nodes; + return dx * (ey * cp - bp * fy) - + dy * (ex * cp - bp * fx) + + ap * (ex * fy - ey * fx) < 0; +} - if (x == null) x = 0; - if (y == null) y = 0; +function circumradius(ax, ay, bx, by, cx, cy) { + const dx = bx - ax; + const dy = by - ay; + const ex = cx - ax; + const ey = cy - ay; - function force() { - var i, - n = nodes.length, - node, - sx = 0, - sy = 0; + const bl = dx * dx + dy * dy; + const cl = ex * ex + ey * ey; + const d = 0.5 / (dx * ey - dy * ex); - for (i = 0; i < n; ++i) { - node = nodes[i], sx += node.x, sy += node.y; - } + const x = (ey * bl - dy * cl) * d; + const y = (dx * cl - ex * bl) * d; - for (sx = sx / n - x, sy = sy / n - y, i = 0; i < n; ++i) { - node = nodes[i], node.x -= sx, node.y -= sy; - } - } + return x * x + y * y; +} - force.initialize = function(_) { - nodes = _; - }; +function circumcenter(ax, ay, bx, by, cx, cy) { + const dx = bx - ax; + const dy = by - ay; + const ex = cx - ax; + const ey = cy - ay; - force.x = function(_) { - return arguments.length ? (x = +_, force) : x; - }; + const bl = dx * dx + dy * dy; + const cl = ex * ex + ey * ey; + const d = 0.5 / (dx * ey - dy * ex); - force.y = function(_) { - return arguments.length ? (y = +_, force) : y; - }; + const x = ax + (ey * bl - dy * cl) * d; + const y = ay + (dx * cl - ex * bl) * d; - return force; + return {x, y}; } -function constant$7(x) { - return function() { - return x; - }; -} +function quicksort(ids, dists, left, right) { + if (right - left <= 20) { + for (let i = left + 1; i <= right; i++) { + const temp = ids[i]; + const tempDist = dists[temp]; + let j = i - 1; + while (j >= left && dists[ids[j]] > tempDist) ids[j + 1] = ids[j--]; + ids[j + 1] = temp; + } + } else { + const median = (left + right) >> 1; + let i = left + 1; + let j = right; + swap(ids, median, i); + if (dists[ids[left]] > dists[ids[right]]) swap(ids, left, right); + if (dists[ids[i]] > dists[ids[right]]) swap(ids, i, right); + if (dists[ids[left]] > dists[ids[i]]) swap(ids, left, i); + + const temp = ids[i]; + const tempDist = dists[temp]; + while (true) { + do i++; while (dists[ids[i]] < tempDist); + do j--; while (dists[ids[j]] > tempDist); + if (j < i) break; + swap(ids, i, j); + } + ids[left + 1] = ids[j]; + ids[j] = temp; -function jiggle() { - return (Math.random() - 0.5) * 1e-6; + if (right - i + 1 >= j - left) { + quicksort(ids, dists, i, right); + quicksort(ids, dists, left, j - 1); + } else { + quicksort(ids, dists, left, j - 1); + quicksort(ids, dists, i, right); + } + } } -function tree_add(d) { - var x = +this._x.call(null, d), - y = +this._y.call(null, d); - return add(this.cover(x, y), x, y, d); +function swap(arr, i, j) { + const tmp = arr[i]; + arr[i] = arr[j]; + arr[j] = tmp; } -function add(tree, x, y, d) { - if (isNaN(x) || isNaN(y)) return tree; // ignore invalid points - - var parent, - node = tree._root, - leaf = {data: d}, - x0 = tree._x0, - y0 = tree._y0, - x1 = tree._x1, - y1 = tree._y1, - xm, - ym, - xp, - yp, - right, - bottom, - i, - j; +function defaultGetX(p) { + return p[0]; +} +function defaultGetY(p) { + return p[1]; +} - // If the tree is empty, initialize the root as a leaf. - if (!node) return tree._root = leaf, tree; +const epsilon$2 = 1e-6; - // Find the existing leaf for the new point, or add it. - while (node.length) { - if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; - if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; - if (parent = node, !(node = node[i = bottom << 1 | right])) return parent[i] = leaf, tree; +class Path { + constructor() { + this._x0 = this._y0 = // start of current subpath + this._x1 = this._y1 = null; // end of current subpath + this._ = ""; + } + moveTo(x, y) { + this._ += `M${this._x0 = this._x1 = +x},${this._y0 = this._y1 = +y}`; + } + closePath() { + if (this._x1 !== null) { + this._x1 = this._x0, this._y1 = this._y0; + this._ += "Z"; + } + } + lineTo(x, y) { + this._ += `L${this._x1 = +x},${this._y1 = +y}`; + } + arc(x, y, r) { + x = +x, y = +y, r = +r; + const x0 = x + r; + const y0 = y; + if (r < 0) throw new Error("negative radius"); + if (this._x1 === null) this._ += `M${x0},${y0}`; + else if (Math.abs(this._x1 - x0) > epsilon$2 || Math.abs(this._y1 - y0) > epsilon$2) this._ += "L" + x0 + "," + y0; + if (!r) return; + this._ += `A${r},${r},0,1,1,${x - r},${y}A${r},${r},0,1,1,${this._x1 = x0},${this._y1 = y0}`; + } + rect(x, y, w, h) { + this._ += `M${this._x0 = this._x1 = +x},${this._y0 = this._y1 = +y}h${+w}v${+h}h${-w}Z`; + } + value() { + return this._ || null; } - - // Is the new point is exactly coincident with the existing point? - xp = +tree._x.call(null, node.data); - yp = +tree._y.call(null, node.data); - if (x === xp && y === yp) return leaf.next = node, parent ? parent[i] = leaf : tree._root = leaf, tree; - - // Otherwise, split the leaf node until the old and new point are separated. - do { - parent = parent ? parent[i] = new Array(4) : tree._root = new Array(4); - if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; - if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; - } while ((i = bottom << 1 | right) === (j = (yp >= ym) << 1 | (xp >= xm))); - return parent[j] = node, parent[i] = leaf, tree; } -function addAll(data) { - var d, i, n = data.length, - x, - y, - xz = new Array(n), - yz = new Array(n), - x0 = Infinity, - y0 = Infinity, - x1 = -Infinity, - y1 = -Infinity; - - // Compute the points and their extent. - for (i = 0; i < n; ++i) { - if (isNaN(x = +this._x.call(null, d = data[i])) || isNaN(y = +this._y.call(null, d))) continue; - xz[i] = x; - yz[i] = y; - if (x < x0) x0 = x; - if (x > x1) x1 = x; - if (y < y0) y0 = y; - if (y > y1) y1 = y; +class Polygon { + constructor() { + this._ = []; } - - // If there were no (valid) points, abort. - if (x0 > x1 || y0 > y1) return this; - - // Expand the tree to cover the new points. - this.cover(x0, y0).cover(x1, y1); - - // Add the new points. - for (i = 0; i < n; ++i) { - add(this, xz[i], yz[i], data[i]); + moveTo(x, y) { + this._.push([x, y]); + } + closePath() { + this._.push(this._[0].slice()); + } + lineTo(x, y) { + this._.push([x, y]); + } + value() { + return this._.length ? this._ : null; } - - return this; } -function tree_cover(x, y) { - if (isNaN(x = +x) || isNaN(y = +y)) return this; // ignore invalid points - - var x0 = this._x0, - y0 = this._y0, - x1 = this._x1, - y1 = this._y1; - - // If the quadtree has no extent, initialize them. - // Integer extent are necessary so that if we later double the extent, - // the existing quadrant boundaries don’t change due to floating point error! - if (isNaN(x0)) { - x1 = (x0 = Math.floor(x)) + 1; - y1 = (y0 = Math.floor(y)) + 1; +class Voronoi { + constructor(delaunay, [xmin, ymin, xmax, ymax] = [0, 0, 960, 500]) { + if (!((xmax = +xmax) >= (xmin = +xmin)) || !((ymax = +ymax) >= (ymin = +ymin))) throw new Error("invalid bounds"); + this.delaunay = delaunay; + this._circumcenters = new Float64Array(delaunay.points.length * 2); + this.vectors = new Float64Array(delaunay.points.length * 2); + this.xmax = xmax, this.xmin = xmin; + this.ymax = ymax, this.ymin = ymin; + this._init(); } - - // Otherwise, double repeatedly to cover. - else { - var z = x1 - x0, - node = this._root, - parent, - i; - - while (x0 > x || x >= x1 || y0 > y || y >= y1) { - i = (y < y0) << 1 | (x < x0); - parent = new Array(4), parent[i] = node, node = parent, z *= 2; - switch (i) { - case 0: x1 = x0 + z, y1 = y0 + z; break; - case 1: x0 = x1 - z, y1 = y0 + z; break; - case 2: x1 = x0 + z, y0 = y1 - z; break; - case 3: x0 = x1 - z, y0 = y1 - z; break; + update() { + this.delaunay.update(); + this._init(); + return this; + } + _init() { + const {delaunay: {points, hull, triangles}, vectors} = this; + + // Compute circumcenters. + const circumcenters = this.circumcenters = this._circumcenters.subarray(0, triangles.length / 3 * 2); + for (let i = 0, j = 0, n = triangles.length, x, y; i < n; i += 3, j += 2) { + const t1 = triangles[i] * 2; + const t2 = triangles[i + 1] * 2; + const t3 = triangles[i + 2] * 2; + const x1 = points[t1]; + const y1 = points[t1 + 1]; + const x2 = points[t2]; + const y2 = points[t2 + 1]; + const x3 = points[t3]; + const y3 = points[t3 + 1]; + + const dx = x2 - x1; + const dy = y2 - y1; + const ex = x3 - x1; + const ey = y3 - y1; + const bl = dx * dx + dy * dy; + const cl = ex * ex + ey * ey; + const ab = (dx * ey - dy * ex) * 2; + + if (!ab) { + // degenerate case (collinear diagram) + x = (x1 + x3) / 2 - 1e8 * ey; + y = (y1 + y3) / 2 + 1e8 * ex; + } + else if (Math.abs(ab) < 1e-8) { + // almost equal points (degenerate triangle) + x = (x1 + x3) / 2; + y = (y1 + y3) / 2; + } else { + const d = 1 / ab; + x = x1 + (ey * bl - dy * cl) * d; + y = y1 + (dx * cl - ex * bl) * d; + } + circumcenters[j] = x; + circumcenters[j + 1] = y; + } + + // Compute exterior cell rays. + let h = hull[hull.length - 1]; + let p0, p1 = h * 4; + let x0, x1 = points[2 * h]; + let y0, y1 = points[2 * h + 1]; + vectors.fill(0); + for (let i = 0; i < hull.length; ++i) { + h = hull[i]; + p0 = p1, x0 = x1, y0 = y1; + p1 = h * 4, x1 = points[2 * h], y1 = points[2 * h + 1]; + vectors[p0 + 2] = vectors[p1] = y0 - y1; + vectors[p0 + 3] = vectors[p1 + 1] = x1 - x0; + } + } + render(context) { + const buffer = context == null ? context = new Path : undefined; + const {delaunay: {halfedges, inedges, hull}, circumcenters, vectors} = this; + if (hull.length <= 1) return null; + for (let i = 0, n = halfedges.length; i < n; ++i) { + const j = halfedges[i]; + if (j < i) continue; + const ti = Math.floor(i / 3) * 2; + const tj = Math.floor(j / 3) * 2; + const xi = circumcenters[ti]; + const yi = circumcenters[ti + 1]; + const xj = circumcenters[tj]; + const yj = circumcenters[tj + 1]; + this._renderSegment(xi, yi, xj, yj, context); + } + let h0, h1 = hull[hull.length - 1]; + for (let i = 0; i < hull.length; ++i) { + h0 = h1, h1 = hull[i]; + const t = Math.floor(inedges[h1] / 3) * 2; + const x = circumcenters[t]; + const y = circumcenters[t + 1]; + const v = h0 * 4; + const p = this._project(x, y, vectors[v + 2], vectors[v + 3]); + if (p) this._renderSegment(x, y, p[0], p[1], context); + } + return buffer && buffer.value(); + } + renderBounds(context) { + const buffer = context == null ? context = new Path : undefined; + context.rect(this.xmin, this.ymin, this.xmax - this.xmin, this.ymax - this.ymin); + return buffer && buffer.value(); + } + renderCell(i, context) { + const buffer = context == null ? context = new Path : undefined; + const points = this._clip(i); + if (points === null || !points.length) return; + context.moveTo(points[0], points[1]); + let n = points.length; + while (points[0] === points[n-2] && points[1] === points[n-1] && n > 1) n -= 2; + for (let i = 2; i < n; i += 2) { + if (points[i] !== points[i-2] || points[i+1] !== points[i-1]) + context.lineTo(points[i], points[i + 1]); + } + context.closePath(); + return buffer && buffer.value(); + } + *cellPolygons() { + const {delaunay: {points}} = this; + for (let i = 0, n = points.length / 2; i < n; ++i) { + const cell = this.cellPolygon(i); + if (cell) cell.index = i, yield cell; + } + } + cellPolygon(i) { + const polygon = new Polygon; + this.renderCell(i, polygon); + return polygon.value(); + } + _renderSegment(x0, y0, x1, y1, context) { + let S; + const c0 = this._regioncode(x0, y0); + const c1 = this._regioncode(x1, y1); + if (c0 === 0 && c1 === 0) { + context.moveTo(x0, y0); + context.lineTo(x1, y1); + } else if (S = this._clipSegment(x0, y0, x1, y1, c0, c1)) { + context.moveTo(S[0], S[1]); + context.lineTo(S[2], S[3]); + } + } + contains(i, x, y) { + if ((x = +x, x !== x) || (y = +y, y !== y)) return false; + return this.delaunay._step(i, x, y) === i; + } + *neighbors(i) { + const ci = this._clip(i); + if (ci) for (const j of this.delaunay.neighbors(i)) { + const cj = this._clip(j); + // find the common edge + if (cj) loop: for (let ai = 0, li = ci.length; ai < li; ai += 2) { + for (let aj = 0, lj = cj.length; aj < lj; aj += 2) { + if (ci[ai] == cj[aj] + && ci[ai + 1] == cj[aj + 1] + && ci[(ai + 2) % li] == cj[(aj + lj - 2) % lj] + && ci[(ai + 3) % li] == cj[(aj + lj - 1) % lj] + ) { + yield j; + break loop; + } + } } } - - if (this._root && this._root.length) this._root = node; } - - this._x0 = x0; - this._y0 = y0; - this._x1 = x1; - this._y1 = y1; - return this; + _cell(i) { + const {circumcenters, delaunay: {inedges, halfedges, triangles}} = this; + const e0 = inedges[i]; + if (e0 === -1) return null; // coincident point + const points = []; + let e = e0; + do { + const t = Math.floor(e / 3); + points.push(circumcenters[t * 2], circumcenters[t * 2 + 1]); + e = e % 3 === 2 ? e - 2 : e + 1; + if (triangles[e] !== i) break; // bad triangulation + e = halfedges[e]; + } while (e !== e0 && e !== -1); + return points; + } + _clip(i) { + // degenerate case (1 valid point: return the box) + if (i === 0 && this.delaunay.hull.length === 1) { + return [this.xmax, this.ymin, this.xmax, this.ymax, this.xmin, this.ymax, this.xmin, this.ymin]; + } + const points = this._cell(i); + if (points === null) return null; + const {vectors: V} = this; + const v = i * 4; + return V[v] || V[v + 1] + ? this._clipInfinite(i, points, V[v], V[v + 1], V[v + 2], V[v + 3]) + : this._clipFinite(i, points); + } + _clipFinite(i, points) { + const n = points.length; + let P = null; + let x0, y0, x1 = points[n - 2], y1 = points[n - 1]; + let c0, c1 = this._regioncode(x1, y1); + let e0, e1; + for (let j = 0; j < n; j += 2) { + x0 = x1, y0 = y1, x1 = points[j], y1 = points[j + 1]; + c0 = c1, c1 = this._regioncode(x1, y1); + if (c0 === 0 && c1 === 0) { + e0 = e1, e1 = 0; + if (P) P.push(x1, y1); + else P = [x1, y1]; + } else { + let S, sx0, sy0, sx1, sy1; + if (c0 === 0) { + if ((S = this._clipSegment(x0, y0, x1, y1, c0, c1)) === null) continue; + [sx0, sy0, sx1, sy1] = S; + } else { + if ((S = this._clipSegment(x1, y1, x0, y0, c1, c0)) === null) continue; + [sx1, sy1, sx0, sy0] = S; + e0 = e1, e1 = this._edgecode(sx0, sy0); + if (e0 && e1) this._edge(i, e0, e1, P, P.length); + if (P) P.push(sx0, sy0); + else P = [sx0, sy0]; + } + e0 = e1, e1 = this._edgecode(sx1, sy1); + if (e0 && e1) this._edge(i, e0, e1, P, P.length); + if (P) P.push(sx1, sy1); + else P = [sx1, sy1]; + } + } + if (P) { + e0 = e1, e1 = this._edgecode(P[0], P[1]); + if (e0 && e1) this._edge(i, e0, e1, P, P.length); + } else if (this.contains(i, (this.xmin + this.xmax) / 2, (this.ymin + this.ymax) / 2)) { + return [this.xmax, this.ymin, this.xmax, this.ymax, this.xmin, this.ymax, this.xmin, this.ymin]; + } + return P; + } + _clipSegment(x0, y0, x1, y1, c0, c1) { + while (true) { + if (c0 === 0 && c1 === 0) return [x0, y0, x1, y1]; + if (c0 & c1) return null; + let x, y, c = c0 || c1; + if (c & 0b1000) x = x0 + (x1 - x0) * (this.ymax - y0) / (y1 - y0), y = this.ymax; + else if (c & 0b0100) x = x0 + (x1 - x0) * (this.ymin - y0) / (y1 - y0), y = this.ymin; + else if (c & 0b0010) y = y0 + (y1 - y0) * (this.xmax - x0) / (x1 - x0), x = this.xmax; + else y = y0 + (y1 - y0) * (this.xmin - x0) / (x1 - x0), x = this.xmin; + if (c0) x0 = x, y0 = y, c0 = this._regioncode(x0, y0); + else x1 = x, y1 = y, c1 = this._regioncode(x1, y1); + } + } + _clipInfinite(i, points, vx0, vy0, vxn, vyn) { + let P = Array.from(points), p; + if (p = this._project(P[0], P[1], vx0, vy0)) P.unshift(p[0], p[1]); + if (p = this._project(P[P.length - 2], P[P.length - 1], vxn, vyn)) P.push(p[0], p[1]); + if (P = this._clipFinite(i, P)) { + for (let j = 0, n = P.length, c0, c1 = this._edgecode(P[n - 2], P[n - 1]); j < n; j += 2) { + c0 = c1, c1 = this._edgecode(P[j], P[j + 1]); + if (c0 && c1) j = this._edge(i, c0, c1, P, j), n = P.length; + } + } else if (this.contains(i, (this.xmin + this.xmax) / 2, (this.ymin + this.ymax) / 2)) { + P = [this.xmin, this.ymin, this.xmax, this.ymin, this.xmax, this.ymax, this.xmin, this.ymax]; + } + return P; + } + _edge(i, e0, e1, P, j) { + while (e0 !== e1) { + let x, y; + switch (e0) { + case 0b0101: e0 = 0b0100; continue; // top-left + case 0b0100: e0 = 0b0110, x = this.xmax, y = this.ymin; break; // top + case 0b0110: e0 = 0b0010; continue; // top-right + case 0b0010: e0 = 0b1010, x = this.xmax, y = this.ymax; break; // right + case 0b1010: e0 = 0b1000; continue; // bottom-right + case 0b1000: e0 = 0b1001, x = this.xmin, y = this.ymax; break; // bottom + case 0b1001: e0 = 0b0001; continue; // bottom-left + case 0b0001: e0 = 0b0101, x = this.xmin, y = this.ymin; break; // left + } + if ((P[j] !== x || P[j + 1] !== y) && this.contains(i, x, y)) { + P.splice(j, 0, x, y), j += 2; + } + } + if (P.length > 4) { + for (let i = 0; i < P.length; i+= 2) { + const j = (i + 2) % P.length, k = (i + 4) % P.length; + if (P[i] === P[j] && P[j] === P[k] + || P[i + 1] === P[j + 1] && P[j + 1] === P[k + 1]) + P.splice(j, 2), i -= 2; + } + } + return j; + } + _project(x0, y0, vx, vy) { + let t = Infinity, c, x, y; + if (vy < 0) { // top + if (y0 <= this.ymin) return null; + if ((c = (this.ymin - y0) / vy) < t) y = this.ymin, x = x0 + (t = c) * vx; + } else if (vy > 0) { // bottom + if (y0 >= this.ymax) return null; + if ((c = (this.ymax - y0) / vy) < t) y = this.ymax, x = x0 + (t = c) * vx; + } + if (vx > 0) { // right + if (x0 >= this.xmax) return null; + if ((c = (this.xmax - x0) / vx) < t) x = this.xmax, y = y0 + (t = c) * vy; + } else if (vx < 0) { // left + if (x0 <= this.xmin) return null; + if ((c = (this.xmin - x0) / vx) < t) x = this.xmin, y = y0 + (t = c) * vy; + } + return [x, y]; + } + _edgecode(x, y) { + return (x === this.xmin ? 0b0001 + : x === this.xmax ? 0b0010 : 0b0000) + | (y === this.ymin ? 0b0100 + : y === this.ymax ? 0b1000 : 0b0000); + } + _regioncode(x, y) { + return (x < this.xmin ? 0b0001 + : x > this.xmax ? 0b0010 : 0b0000) + | (y < this.ymin ? 0b0100 + : y > this.ymax ? 0b1000 : 0b0000); + } } -function tree_data() { - var data = []; - this.visit(function(node) { - if (!node.length) do data.push(node.data); while (node = node.next) - }); - return data; +const tau$2 = 2 * Math.PI, pow$2 = Math.pow; + +function pointX(p) { + return p[0]; } -function tree_extent(_) { - return arguments.length - ? this.cover(+_[0][0], +_[0][1]).cover(+_[1][0], +_[1][1]) - : isNaN(this._x0) ? undefined : [[this._x0, this._y0], [this._x1, this._y1]]; +function pointY(p) { + return p[1]; } -function Quad(node, x0, y0, x1, y1) { - this.node = node; - this.x0 = x0; - this.y0 = y0; - this.x1 = x1; - this.y1 = y1; +// A triangulation is collinear if all its triangles have a non-null area +function collinear(d) { + const {triangles, coords} = d; + for (let i = 0; i < triangles.length; i += 3) { + const a = 2 * triangles[i], + b = 2 * triangles[i + 1], + c = 2 * triangles[i + 2], + cross = (coords[c] - coords[a]) * (coords[b + 1] - coords[a + 1]) + - (coords[b] - coords[a]) * (coords[c + 1] - coords[a + 1]); + if (cross > 1e-10) return false; + } + return true; } -function tree_find(x, y, radius) { - var data, - x0 = this._x0, - y0 = this._y0, - x1, - y1, - x2, - y2, - x3 = this._x1, - y3 = this._y1, - quads = [], - node = this._root, - q, - i; +function jitter(x, y, r) { + return [x + Math.sin(x + y) * r, y + Math.cos(x - y) * r]; +} - if (node) quads.push(new Quad(node, x0, y0, x3, y3)); - if (radius == null) radius = Infinity; - else { - x0 = x - radius, y0 = y - radius; - x3 = x + radius, y3 = y + radius; - radius *= radius; +class Delaunay { + static from(points, fx = pointX, fy = pointY, that) { + return new Delaunay("length" in points + ? flatArray(points, fx, fy, that) + : Float64Array.from(flatIterable(points, fx, fy, that))); } + constructor(points) { + this._delaunator = new Delaunator(points); + this.inedges = new Int32Array(points.length / 2); + this._hullIndex = new Int32Array(points.length / 2); + this.points = this._delaunator.coords; + this._init(); + } + update() { + this._delaunator.update(); + this._init(); + return this; + } + _init() { + const d = this._delaunator, points = this.points; + + // check for collinear + if (d.hull && d.hull.length > 2 && collinear(d)) { + this.collinear = Int32Array.from({length: points.length/2}, (_,i) => i) + .sort((i, j) => points[2 * i] - points[2 * j] || points[2 * i + 1] - points[2 * j + 1]); // for exact neighbors + const e = this.collinear[0], f = this.collinear[this.collinear.length - 1], + bounds = [ points[2 * e], points[2 * e + 1], points[2 * f], points[2 * f + 1] ], + r = 1e-8 * Math.hypot(bounds[3] - bounds[1], bounds[2] - bounds[0]); + for (let i = 0, n = points.length / 2; i < n; ++i) { + const p = jitter(points[2 * i], points[2 * i + 1], r); + points[2 * i] = p[0]; + points[2 * i + 1] = p[1]; + } + this._delaunator = new Delaunator(points); + } else { + delete this.collinear; + } - while (q = quads.pop()) { - - // Stop searching if this quadrant can’t contain a closer node. - if (!(node = q.node) - || (x1 = q.x0) > x3 - || (y1 = q.y0) > y3 - || (x2 = q.x1) < x0 - || (y2 = q.y1) < y0) continue; + const halfedges = this.halfedges = this._delaunator.halfedges; + const hull = this.hull = this._delaunator.hull; + const triangles = this.triangles = this._delaunator.triangles; + const inedges = this.inedges.fill(-1); + const hullIndex = this._hullIndex.fill(-1); - // Bisect the current quadrant. - if (node.length) { - var xm = (x1 + x2) / 2, - ym = (y1 + y2) / 2; + // Compute an index from each point to an (arbitrary) incoming halfedge + // Used to give the first neighbor of each point; for this reason, + // on the hull we give priority to exterior halfedges + for (let e = 0, n = halfedges.length; e < n; ++e) { + const p = triangles[e % 3 === 2 ? e - 2 : e + 1]; + if (halfedges[e] === -1 || inedges[p] === -1) inedges[p] = e; + } + for (let i = 0, n = hull.length; i < n; ++i) { + hullIndex[hull[i]] = i; + } - quads.push( - new Quad(node[3], xm, ym, x2, y2), - new Quad(node[2], x1, ym, xm, y2), - new Quad(node[1], xm, y1, x2, ym), - new Quad(node[0], x1, y1, xm, ym) - ); + // degenerate case: 1 or 2 (distinct) points + if (hull.length <= 2 && hull.length > 0) { + this.triangles = new Int32Array(3).fill(-1); + this.halfedges = new Int32Array(3).fill(-1); + this.triangles[0] = hull[0]; + this.triangles[1] = hull[1]; + this.triangles[2] = hull[1]; + inedges[hull[0]] = 1; + if (hull.length === 2) inedges[hull[1]] = 0; + } + } + voronoi(bounds) { + return new Voronoi(this, bounds); + } + *neighbors(i) { + const {inedges, hull, _hullIndex, halfedges, triangles, collinear} = this; - // Visit the closest quadrant first. - if (i = (y >= ym) << 1 | (x >= xm)) { - q = quads[quads.length - 1]; - quads[quads.length - 1] = quads[quads.length - 1 - i]; - quads[quads.length - 1 - i] = q; - } + // degenerate case with several collinear points + if (collinear) { + const l = collinear.indexOf(i); + if (l > 0) yield collinear[l - 1]; + if (l < collinear.length - 1) yield collinear[l + 1]; + return; } - // Visit this point. (Visiting coincident points isn’t necessary!) - else { - var dx = x - +this._x.call(null, node.data), - dy = y - +this._y.call(null, node.data), - d2 = dx * dx + dy * dy; - if (d2 < radius) { - var d = Math.sqrt(radius = d2); - x0 = x - d, y0 = y - d; - x3 = x + d, y3 = y + d; - data = node.data; + const e0 = inedges[i]; + if (e0 === -1) return; // coincident point + let e = e0, p0 = -1; + do { + yield p0 = triangles[e]; + e = e % 3 === 2 ? e - 2 : e + 1; + if (triangles[e] !== i) return; // bad triangulation + e = halfedges[e]; + if (e === -1) { + const p = hull[(_hullIndex[i] + 1) % hull.length]; + if (p !== p0) yield p; + return; + } + } while (e !== e0); + } + find(x, y, i = 0) { + if ((x = +x, x !== x) || (y = +y, y !== y)) return -1; + const i0 = i; + let c; + while ((c = this._step(i, x, y)) >= 0 && c !== i && c !== i0) i = c; + return c; + } + _step(i, x, y) { + const {inedges, hull, _hullIndex, halfedges, triangles, points} = this; + if (inedges[i] === -1 || !points.length) return (i + 1) % (points.length >> 1); + let c = i; + let dc = pow$2(x - points[i * 2], 2) + pow$2(y - points[i * 2 + 1], 2); + const e0 = inedges[i]; + let e = e0; + do { + let t = triangles[e]; + const dt = pow$2(x - points[t * 2], 2) + pow$2(y - points[t * 2 + 1], 2); + if (dt < dc) dc = dt, c = t; + e = e % 3 === 2 ? e - 2 : e + 1; + if (triangles[e] !== i) break; // bad triangulation + e = halfedges[e]; + if (e === -1) { + e = hull[(_hullIndex[i] + 1) % hull.length]; + if (e !== t) { + if (pow$2(x - points[e * 2], 2) + pow$2(y - points[e * 2 + 1], 2) < dc) return e; + } + break; } + } while (e !== e0); + return c; + } + render(context) { + const buffer = context == null ? context = new Path : undefined; + const {points, halfedges, triangles} = this; + for (let i = 0, n = halfedges.length; i < n; ++i) { + const j = halfedges[i]; + if (j < i) continue; + const ti = triangles[i] * 2; + const tj = triangles[j] * 2; + context.moveTo(points[ti], points[ti + 1]); + context.lineTo(points[tj], points[tj + 1]); + } + this.renderHull(context); + return buffer && buffer.value(); + } + renderPoints(context, r = 2) { + const buffer = context == null ? context = new Path : undefined; + const {points} = this; + for (let i = 0, n = points.length; i < n; i += 2) { + const x = points[i], y = points[i + 1]; + context.moveTo(x + r, y); + context.arc(x, y, r, 0, tau$2); + } + return buffer && buffer.value(); + } + renderHull(context) { + const buffer = context == null ? context = new Path : undefined; + const {hull, points} = this; + const h = hull[0] * 2, n = hull.length; + context.moveTo(points[h], points[h + 1]); + for (let i = 1; i < n; ++i) { + const h = 2 * hull[i]; + context.lineTo(points[h], points[h + 1]); + } + context.closePath(); + return buffer && buffer.value(); + } + hullPolygon() { + const polygon = new Polygon; + this.renderHull(polygon); + return polygon.value(); + } + renderTriangle(i, context) { + const buffer = context == null ? context = new Path : undefined; + const {points, triangles} = this; + const t0 = triangles[i *= 3] * 2; + const t1 = triangles[i + 1] * 2; + const t2 = triangles[i + 2] * 2; + context.moveTo(points[t0], points[t0 + 1]); + context.lineTo(points[t1], points[t1 + 1]); + context.lineTo(points[t2], points[t2 + 1]); + context.closePath(); + return buffer && buffer.value(); + } + *trianglePolygons() { + const {triangles} = this; + for (let i = 0, n = triangles.length / 3; i < n; ++i) { + yield this.trianglePolygon(i); } } + trianglePolygon(i) { + const polygon = new Polygon; + this.renderTriangle(i, polygon); + return polygon.value(); + } +} - return data; +function flatArray(points, fx, fy, that) { + const n = points.length; + const array = new Float64Array(n * 2); + for (let i = 0; i < n; ++i) { + const p = points[i]; + array[i * 2] = fx.call(that, p, i, points); + array[i * 2 + 1] = fy.call(that, p, i, points); + } + return array; } -function tree_remove(d) { - if (isNaN(x = +this._x.call(null, d)) || isNaN(y = +this._y.call(null, d))) return this; // ignore invalid points +function* flatIterable(points, fx, fy, that) { + let i = 0; + for (const p of points) { + yield fx.call(that, p, i, points); + yield fy.call(that, p, i, points); + ++i; + } +} - var parent, - node = this._root, - retainer, - previous, - next, - x0 = this._x0, - y0 = this._y0, - x1 = this._x1, - y1 = this._y1, - x, - y, - xm, - ym, - right, - bottom, - i, - j; +var EOL = {}, + EOF = {}, + QUOTE = 34, + NEWLINE = 10, + RETURN = 13; - // If the tree is empty, initialize the root as a leaf. - if (!node) return this; - - // Find the leaf node for the point. - // While descending, also retain the deepest parent with a non-removed sibling. - if (node.length) while (true) { - if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; - if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; - if (!(parent = node, node = node[i = bottom << 1 | right])) return this; - if (!node.length) break; - if (parent[(i + 1) & 3] || parent[(i + 2) & 3] || parent[(i + 3) & 3]) retainer = parent, j = i; - } - - // Find the point to remove. - while (node.data !== d) if (!(previous = node, node = node.next)) return this; - if (next = node.next) delete node.next; - - // If there are multiple coincident points, remove just the point. - if (previous) return (next ? previous.next = next : delete previous.next), this; +function objectConverter(columns) { + return new Function("d", "return {" + columns.map(function(name, i) { + return JSON.stringify(name) + ": d[" + i + "] || \"\""; + }).join(",") + "}"); +} - // If this is the root point, remove it. - if (!parent) return this._root = next, this; +function customConverter(columns, f) { + var object = objectConverter(columns); + return function(row, i) { + return f(object(row), i, columns); + }; +} - // Remove this leaf. - next ? parent[i] = next : delete parent[i]; +// Compute unique columns in order of discovery. +function inferColumns(rows) { + var columnSet = Object.create(null), + columns = []; - // If the parent now contains exactly one leaf, collapse superfluous parents. - if ((node = parent[0] || parent[1] || parent[2] || parent[3]) - && node === (parent[3] || parent[2] || parent[1] || parent[0]) - && !node.length) { - if (retainer) retainer[j] = node; - else this._root = node; - } + rows.forEach(function(row) { + for (var column in row) { + if (!(column in columnSet)) { + columns.push(columnSet[column] = column); + } + } + }); - return this; + return columns; } -function removeAll(data) { - for (var i = 0, n = data.length; i < n; ++i) this.remove(data[i]); - return this; +function pad$1(value, width) { + var s = value + "", length = s.length; + return length < width ? new Array(width - length + 1).join(0) + s : s; } -function tree_root() { - return this._root; +function formatYear$1(year) { + return year < 0 ? "-" + pad$1(-year, 6) + : year > 9999 ? "+" + pad$1(year, 6) + : pad$1(year, 4); } -function tree_size() { - var size = 0; - this.visit(function(node) { - if (!node.length) do ++size; while (node = node.next) - }); - return size; +function formatDate(date) { + var hours = date.getUTCHours(), + minutes = date.getUTCMinutes(), + seconds = date.getUTCSeconds(), + milliseconds = date.getUTCMilliseconds(); + return isNaN(date) ? "Invalid Date" + : formatYear$1(date.getUTCFullYear()) + "-" + pad$1(date.getUTCMonth() + 1, 2) + "-" + pad$1(date.getUTCDate(), 2) + + (milliseconds ? "T" + pad$1(hours, 2) + ":" + pad$1(minutes, 2) + ":" + pad$1(seconds, 2) + "." + pad$1(milliseconds, 3) + "Z" + : seconds ? "T" + pad$1(hours, 2) + ":" + pad$1(minutes, 2) + ":" + pad$1(seconds, 2) + "Z" + : minutes || hours ? "T" + pad$1(hours, 2) + ":" + pad$1(minutes, 2) + "Z" + : ""); } -function tree_visit(callback) { - var quads = [], q, node = this._root, child, x0, y0, x1, y1; - if (node) quads.push(new Quad(node, this._x0, this._y0, this._x1, this._y1)); - while (q = quads.pop()) { - if (!callback(node = q.node, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1) && node.length) { - var xm = (x0 + x1) / 2, ym = (y0 + y1) / 2; - if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1)); - if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1)); - if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym)); - if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym)); - } - } - return this; -} +function dsvFormat(delimiter) { + var reFormat = new RegExp("[\"" + delimiter + "\n\r]"), + DELIMITER = delimiter.charCodeAt(0); -function tree_visitAfter(callback) { - var quads = [], next = [], q; - if (this._root) quads.push(new Quad(this._root, this._x0, this._y0, this._x1, this._y1)); - while (q = quads.pop()) { - var node = q.node; - if (node.length) { - var child, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1, xm = (x0 + x1) / 2, ym = (y0 + y1) / 2; - if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym)); - if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym)); - if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1)); - if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1)); - } - next.push(q); - } - while (q = next.pop()) { - callback(q.node, q.x0, q.y0, q.x1, q.y1); + function parse(text, f) { + var convert, columns, rows = parseRows(text, function(row, i) { + if (convert) return convert(row, i - 1); + columns = row, convert = f ? customConverter(row, f) : objectConverter(row); + }); + rows.columns = columns || []; + return rows; } - return this; -} -function defaultX$1(d) { - return d[0]; -} + function parseRows(text, f) { + var rows = [], // output rows + N = text.length, + I = 0, // current character index + n = 0, // current line number + t, // current token + eof = N <= 0, // current token followed by EOF? + eol = false; // current token followed by EOL? -function tree_x(_) { - return arguments.length ? (this._x = _, this) : this._x; -} + // Strip the trailing newline. + if (text.charCodeAt(N - 1) === NEWLINE) --N; + if (text.charCodeAt(N - 1) === RETURN) --N; -function defaultY$1(d) { - return d[1]; -} + function token() { + if (eof) return EOF; + if (eol) return eol = false, EOL; -function tree_y(_) { - return arguments.length ? (this._y = _, this) : this._y; -} + // Unescape quotes. + var i, j = I, c; + if (text.charCodeAt(j) === QUOTE) { + while (I++ < N && text.charCodeAt(I) !== QUOTE || text.charCodeAt(++I) === QUOTE); + if ((i = I) >= N) eof = true; + else if ((c = text.charCodeAt(I++)) === NEWLINE) eol = true; + else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; } + return text.slice(j + 1, i - 1).replace(/""/g, "\""); + } -function quadtree(nodes, x, y) { - var tree = new Quadtree(x == null ? defaultX$1 : x, y == null ? defaultY$1 : y, NaN, NaN, NaN, NaN); - return nodes == null ? tree : tree.addAll(nodes); -} + // Find next delimiter or newline. + while (I < N) { + if ((c = text.charCodeAt(i = I++)) === NEWLINE) eol = true; + else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; } + else if (c !== DELIMITER) continue; + return text.slice(j, i); + } -function Quadtree(x, y, x0, y0, x1, y1) { - this._x = x; - this._y = y; - this._x0 = x0; - this._y0 = y0; - this._x1 = x1; - this._y1 = y1; - this._root = undefined; -} + // Return last token before EOF. + return eof = true, text.slice(j, N); + } -function leaf_copy(leaf) { - var copy = {data: leaf.data}, next = copy; - while (leaf = leaf.next) next = next.next = {data: leaf.data}; - return copy; -} + while ((t = token()) !== EOF) { + var row = []; + while (t !== EOL && t !== EOF) row.push(t), t = token(); + if (f && (row = f(row, n++)) == null) continue; + rows.push(row); + } -var treeProto = quadtree.prototype = Quadtree.prototype; + return rows; + } -treeProto.copy = function() { - var copy = new Quadtree(this._x, this._y, this._x0, this._y0, this._x1, this._y1), - node = this._root, - nodes, - child; + function preformatBody(rows, columns) { + return rows.map(function(row) { + return columns.map(function(column) { + return formatValue(row[column]); + }).join(delimiter); + }); + } - if (!node) return copy; + function format(rows, columns) { + if (columns == null) columns = inferColumns(rows); + return [columns.map(formatValue).join(delimiter)].concat(preformatBody(rows, columns)).join("\n"); + } - if (!node.length) return copy._root = leaf_copy(node), copy; + function formatBody(rows, columns) { + if (columns == null) columns = inferColumns(rows); + return preformatBody(rows, columns).join("\n"); + } - nodes = [{source: node, target: copy._root = new Array(4)}]; - while (node = nodes.pop()) { - for (var i = 0; i < 4; ++i) { - if (child = node.source[i]) { - if (child.length) nodes.push({source: child, target: node.target[i] = new Array(4)}); - else node.target[i] = leaf_copy(child); - } - } + function formatRows(rows) { + return rows.map(formatRow).join("\n"); } - return copy; -}; + function formatRow(row) { + return row.map(formatValue).join(delimiter); + } -treeProto.add = tree_add; -treeProto.addAll = addAll; -treeProto.cover = tree_cover; -treeProto.data = tree_data; -treeProto.extent = tree_extent; -treeProto.find = tree_find; -treeProto.remove = tree_remove; -treeProto.removeAll = removeAll; -treeProto.root = tree_root; -treeProto.size = tree_size; -treeProto.visit = tree_visit; -treeProto.visitAfter = tree_visitAfter; -treeProto.x = tree_x; -treeProto.y = tree_y; + function formatValue(value) { + return value == null ? "" + : value instanceof Date ? formatDate(value) + : reFormat.test(value += "") ? "\"" + value.replace(/"/g, "\"\"") + "\"" + : value; + } -function x(d) { - return d.x + d.vx; + return { + parse: parse, + parseRows: parseRows, + format: format, + formatBody: formatBody, + formatRows: formatRows, + formatRow: formatRow, + formatValue: formatValue + }; } -function y(d) { - return d.y + d.vy; -} +var csv$1 = dsvFormat(","); -function collide(radius) { - var nodes, - radii, - strength = 1, - iterations = 1; +var csvParse = csv$1.parse; +var csvParseRows = csv$1.parseRows; +var csvFormat = csv$1.format; +var csvFormatBody = csv$1.formatBody; +var csvFormatRows = csv$1.formatRows; +var csvFormatRow = csv$1.formatRow; +var csvFormatValue = csv$1.formatValue; - if (typeof radius !== "function") radius = constant$7(radius == null ? 1 : +radius); - - function force() { - var i, n = nodes.length, - tree, - node, - xi, - yi, - ri, - ri2; +var tsv$1 = dsvFormat("\t"); - for (var k = 0; k < iterations; ++k) { - tree = quadtree(nodes, x, y).visitAfter(prepare); - for (i = 0; i < n; ++i) { - node = nodes[i]; - ri = radii[node.index], ri2 = ri * ri; - xi = node.x + node.vx; - yi = node.y + node.vy; - tree.visit(apply); - } - } +var tsvParse = tsv$1.parse; +var tsvParseRows = tsv$1.parseRows; +var tsvFormat = tsv$1.format; +var tsvFormatBody = tsv$1.formatBody; +var tsvFormatRows = tsv$1.formatRows; +var tsvFormatRow = tsv$1.formatRow; +var tsvFormatValue = tsv$1.formatValue; - function apply(quad, x0, y0, x1, y1) { - var data = quad.data, rj = quad.r, r = ri + rj; - if (data) { - if (data.index > node.index) { - var x = xi - data.x - data.vx, - y = yi - data.y - data.vy, - l = x * x + y * y; - if (l < r * r) { - if (x === 0) x = jiggle(), l += x * x; - if (y === 0) y = jiggle(), l += y * y; - l = (r - (l = Math.sqrt(l))) / l * strength; - node.vx += (x *= l) * (r = (rj *= rj) / (ri2 + rj)); - node.vy += (y *= l) * r; - data.vx -= x * (r = 1 - r); - data.vy -= y * r; - } - } - return; - } - return x0 > xi + r || x1 < xi - r || y0 > yi + r || y1 < yi - r; +function autoType(object) { + for (var key in object) { + var value = object[key].trim(), number, m; + if (!value) value = null; + else if (value === "true") value = true; + else if (value === "false") value = false; + else if (value === "NaN") value = NaN; + else if (!isNaN(number = +value)) value = number; + else if (m = value.match(/^([-+]\d{2})?\d{4}(-\d{2}(-\d{2})?)?(T\d{2}:\d{2}(:\d{2}(\.\d{3})?)?(Z|[-+]\d{2}:\d{2})?)?$/)) { + if (fixtz && !!m[4] && !m[7]) value = value.replace(/-/g, "/").replace(/T/, " "); + value = new Date(value); } + else continue; + object[key] = value; } + return object; +} - function prepare(quad) { - if (quad.data) return quad.r = radii[quad.data.index]; - for (var i = quad.r = 0; i < 4; ++i) { - if (quad[i] && quad[i].r > quad.r) { - quad.r = quad[i].r; - } - } - } +// https://github.com/d3/d3-dsv/issues/45 +const fixtz = new Date("2019-01-01T00:00").getHours() || new Date("2019-07-01T00:00").getHours(); - function initialize() { - if (!nodes) return; - var i, n = nodes.length, node; - radii = new Array(n); - for (i = 0; i < n; ++i) node = nodes[i], radii[node.index] = +radius(node, i, nodes); - } +function responseBlob(response) { + if (!response.ok) throw new Error(response.status + " " + response.statusText); + return response.blob(); +} - force.initialize = function(_) { - nodes = _; - initialize(); - }; +function blob(input, init) { + return fetch(input, init).then(responseBlob); +} - force.iterations = function(_) { - return arguments.length ? (iterations = +_, force) : iterations; - }; +function responseArrayBuffer(response) { + if (!response.ok) throw new Error(response.status + " " + response.statusText); + return response.arrayBuffer(); +} - force.strength = function(_) { - return arguments.length ? (strength = +_, force) : strength; - }; +function buffer(input, init) { + return fetch(input, init).then(responseArrayBuffer); +} - force.radius = function(_) { - return arguments.length ? (radius = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : radius; - }; +function responseText(response) { + if (!response.ok) throw new Error(response.status + " " + response.statusText); + return response.text(); +} - return force; +function text(input, init) { + return fetch(input, init).then(responseText); } -function index(d) { - return d.index; +function dsvParse(parse) { + return function(input, init, row) { + if (arguments.length === 2 && typeof init === "function") row = init, init = undefined; + return text(input, init).then(function(response) { + return parse(response, row); + }); + }; } -function find(nodeById, nodeId) { - var node = nodeById.get(nodeId); - if (!node) throw new Error("missing: " + nodeId); - return node; +function dsv(delimiter, input, init, row) { + if (arguments.length === 3 && typeof init === "function") row = init, init = undefined; + var format = dsvFormat(delimiter); + return text(input, init).then(function(response) { + return format.parse(response, row); + }); } -function link(links) { - var id = index, - strength = defaultStrength, - strengths, - distance = constant$7(30), - distances, - nodes, - count, - bias, - iterations = 1; +var csv = dsvParse(csvParse); +var tsv = dsvParse(tsvParse); - if (links == null) links = []; +function image(input, init) { + return new Promise(function(resolve, reject) { + var image = new Image; + for (var key in init) image[key] = init[key]; + image.onerror = reject; + image.onload = function() { resolve(image); }; + image.src = input; + }); +} - function defaultStrength(link) { - return 1 / Math.min(count[link.source.index], count[link.target.index]); - } +function responseJson(response) { + if (!response.ok) throw new Error(response.status + " " + response.statusText); + if (response.status === 204 || response.status === 205) return; + return response.json(); +} - function force(alpha) { - for (var k = 0, n = links.length; k < iterations; ++k) { - for (var i = 0, link, source, target, x, y, l, b; i < n; ++i) { - link = links[i], source = link.source, target = link.target; - x = target.x + target.vx - source.x - source.vx || jiggle(); - y = target.y + target.vy - source.y - source.vy || jiggle(); - l = Math.sqrt(x * x + y * y); - l = (l - distances[i]) / l * alpha * strengths[i]; - x *= l, y *= l; - target.vx -= x * (b = bias[i]); - target.vy -= y * b; - source.vx += x * (b = 1 - b); - source.vy += y * b; - } - } - } +function json(input, init) { + return fetch(input, init).then(responseJson); +} - function initialize() { - if (!nodes) return; +function parser(type) { + return (input, init) => text(input, init) + .then(text => (new DOMParser).parseFromString(text, type)); +} - var i, - n = nodes.length, - m = links.length, - nodeById = map$1(nodes, id), - link; +var xml = parser("application/xml"); - for (i = 0, count = new Array(n); i < m; ++i) { - link = links[i], link.index = i; - if (typeof link.source !== "object") link.source = find(nodeById, link.source); - if (typeof link.target !== "object") link.target = find(nodeById, link.target); - count[link.source.index] = (count[link.source.index] || 0) + 1; - count[link.target.index] = (count[link.target.index] || 0) + 1; - } +var html = parser("text/html"); - for (i = 0, bias = new Array(m); i < m; ++i) { - link = links[i], bias[i] = count[link.source.index] / (count[link.source.index] + count[link.target.index]); - } +var svg = parser("image/svg+xml"); - strengths = new Array(m), initializeStrength(); - distances = new Array(m), initializeDistance(); - } +function center(x, y) { + var nodes, strength = 1; - function initializeStrength() { - if (!nodes) return; + if (x == null) x = 0; + if (y == null) y = 0; - for (var i = 0, n = links.length; i < n; ++i) { - strengths[i] = +strength(links[i], i, links); - } - } + function force() { + var i, + n = nodes.length, + node, + sx = 0, + sy = 0; - function initializeDistance() { - if (!nodes) return; + for (i = 0; i < n; ++i) { + node = nodes[i], sx += node.x, sy += node.y; + } - for (var i = 0, n = links.length; i < n; ++i) { - distances[i] = +distance(links[i], i, links); + for (sx = (sx / n - x) * strength, sy = (sy / n - y) * strength, i = 0; i < n; ++i) { + node = nodes[i], node.x -= sx, node.y -= sy; } } force.initialize = function(_) { nodes = _; - initialize(); }; - force.links = function(_) { - return arguments.length ? (links = _, initialize(), force) : links; - }; - - force.id = function(_) { - return arguments.length ? (id = _, force) : id; + force.x = function(_) { + return arguments.length ? (x = +_, force) : x; }; - force.iterations = function(_) { - return arguments.length ? (iterations = +_, force) : iterations; + force.y = function(_) { + return arguments.length ? (y = +_, force) : y; }; force.strength = function(_) { - return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initializeStrength(), force) : strength; - }; - - force.distance = function(_) { - return arguments.length ? (distance = typeof _ === "function" ? _ : constant$7(+_), initializeDistance(), force) : distance; + return arguments.length ? (strength = +_, force) : strength; }; return force; } -function x$1(d) { - return d.x; +function tree_add(d) { + const x = +this._x.call(null, d), + y = +this._y.call(null, d); + return add(this.cover(x, y), x, y, d); } -function y$1(d) { - return d.y; -} +function add(tree, x, y, d) { + if (isNaN(x) || isNaN(y)) return tree; // ignore invalid points -var initialRadius = 10, - initialAngle = Math.PI * (3 - Math.sqrt(5)); + var parent, + node = tree._root, + leaf = {data: d}, + x0 = tree._x0, + y0 = tree._y0, + x1 = tree._x1, + y1 = tree._y1, + xm, + ym, + xp, + yp, + right, + bottom, + i, + j; -function simulation(nodes) { - var simulation, - alpha = 1, - alphaMin = 0.001, - alphaDecay = 1 - Math.pow(alphaMin, 1 / 300), - alphaTarget = 0, - velocityDecay = 0.6, - forces = map$1(), - stepper = timer(step), - event = dispatch("tick", "end"); - - if (nodes == null) nodes = []; + // If the tree is empty, initialize the root as a leaf. + if (!node) return tree._root = leaf, tree; - function step() { - tick(); - event.call("tick", simulation); - if (alpha < alphaMin) { - stepper.stop(); - event.call("end", simulation); - } + // Find the existing leaf for the new point, or add it. + while (node.length) { + if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; + if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; + if (parent = node, !(node = node[i = bottom << 1 | right])) return parent[i] = leaf, tree; } - function tick(iterations) { - var i, n = nodes.length, node; + // Is the new point is exactly coincident with the existing point? + xp = +tree._x.call(null, node.data); + yp = +tree._y.call(null, node.data); + if (x === xp && y === yp) return leaf.next = node, parent ? parent[i] = leaf : tree._root = leaf, tree; - if (iterations === undefined) iterations = 1; + // Otherwise, split the leaf node until the old and new point are separated. + do { + parent = parent ? parent[i] = new Array(4) : tree._root = new Array(4); + if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; + if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; + } while ((i = bottom << 1 | right) === (j = (yp >= ym) << 1 | (xp >= xm))); + return parent[j] = node, parent[i] = leaf, tree; +} - for (var k = 0; k < iterations; ++k) { - alpha += (alphaTarget - alpha) * alphaDecay; +function addAll(data) { + var d, i, n = data.length, + x, + y, + xz = new Array(n), + yz = new Array(n), + x0 = Infinity, + y0 = Infinity, + x1 = -Infinity, + y1 = -Infinity; - forces.each(function (force) { - force(alpha); - }); + // Compute the points and their extent. + for (i = 0; i < n; ++i) { + if (isNaN(x = +this._x.call(null, d = data[i])) || isNaN(y = +this._y.call(null, d))) continue; + xz[i] = x; + yz[i] = y; + if (x < x0) x0 = x; + if (x > x1) x1 = x; + if (y < y0) y0 = y; + if (y > y1) y1 = y; + } - for (i = 0; i < n; ++i) { - node = nodes[i]; - if (node.fx == null) node.x += node.vx *= velocityDecay; - else node.x = node.fx, node.vx = 0; - if (node.fy == null) node.y += node.vy *= velocityDecay; - else node.y = node.fy, node.vy = 0; - } - } + // If there were no (valid) points, abort. + if (x0 > x1 || y0 > y1) return this; - return simulation; - } + // Expand the tree to cover the new points. + this.cover(x0, y0).cover(x1, y1); - function initializeNodes() { - for (var i = 0, n = nodes.length, node; i < n; ++i) { - node = nodes[i], node.index = i; - if (node.fx != null) node.x = node.fx; - if (node.fy != null) node.y = node.fy; - if (isNaN(node.x) || isNaN(node.y)) { - var radius = initialRadius * Math.sqrt(i), angle = i * initialAngle; - node.x = radius * Math.cos(angle); - node.y = radius * Math.sin(angle); - } - if (isNaN(node.vx) || isNaN(node.vy)) { - node.vx = node.vy = 0; - } - } + // Add the new points. + for (i = 0; i < n; ++i) { + add(this, xz[i], yz[i], data[i]); } - function initializeForce(force) { - if (force.initialize) force.initialize(nodes); - return force; + return this; +} + +function tree_cover(x, y) { + if (isNaN(x = +x) || isNaN(y = +y)) return this; // ignore invalid points + + var x0 = this._x0, + y0 = this._y0, + x1 = this._x1, + y1 = this._y1; + + // If the quadtree has no extent, initialize them. + // Integer extent are necessary so that if we later double the extent, + // the existing quadrant boundaries don’t change due to floating point error! + if (isNaN(x0)) { + x1 = (x0 = Math.floor(x)) + 1; + y1 = (y0 = Math.floor(y)) + 1; } - initializeNodes(); + // Otherwise, double repeatedly to cover. + else { + var z = x1 - x0 || 1, + node = this._root, + parent, + i; - return simulation = { - tick: tick, + while (x0 > x || x >= x1 || y0 > y || y >= y1) { + i = (y < y0) << 1 | (x < x0); + parent = new Array(4), parent[i] = node, node = parent, z *= 2; + switch (i) { + case 0: x1 = x0 + z, y1 = y0 + z; break; + case 1: x0 = x1 - z, y1 = y0 + z; break; + case 2: x1 = x0 + z, y0 = y1 - z; break; + case 3: x0 = x1 - z, y0 = y1 - z; break; + } + } - restart: function() { - return stepper.restart(step), simulation; - }, + if (this._root && this._root.length) this._root = node; + } - stop: function() { - return stepper.stop(), simulation; - }, + this._x0 = x0; + this._y0 = y0; + this._x1 = x1; + this._y1 = y1; + return this; +} - nodes: function(_) { - return arguments.length ? (nodes = _, initializeNodes(), forces.each(initializeForce), simulation) : nodes; - }, +function tree_data() { + var data = []; + this.visit(function(node) { + if (!node.length) do data.push(node.data); while (node = node.next) + }); + return data; +} - alpha: function(_) { - return arguments.length ? (alpha = +_, simulation) : alpha; - }, +function tree_extent(_) { + return arguments.length + ? this.cover(+_[0][0], +_[0][1]).cover(+_[1][0], +_[1][1]) + : isNaN(this._x0) ? undefined : [[this._x0, this._y0], [this._x1, this._y1]]; +} - alphaMin: function(_) { - return arguments.length ? (alphaMin = +_, simulation) : alphaMin; - }, +function Quad(node, x0, y0, x1, y1) { + this.node = node; + this.x0 = x0; + this.y0 = y0; + this.x1 = x1; + this.y1 = y1; +} - alphaDecay: function(_) { - return arguments.length ? (alphaDecay = +_, simulation) : +alphaDecay; - }, +function tree_find(x, y, radius) { + var data, + x0 = this._x0, + y0 = this._y0, + x1, + y1, + x2, + y2, + x3 = this._x1, + y3 = this._y1, + quads = [], + node = this._root, + q, + i; - alphaTarget: function(_) { - return arguments.length ? (alphaTarget = +_, simulation) : alphaTarget; - }, + if (node) quads.push(new Quad(node, x0, y0, x3, y3)); + if (radius == null) radius = Infinity; + else { + x0 = x - radius, y0 = y - radius; + x3 = x + radius, y3 = y + radius; + radius *= radius; + } - velocityDecay: function(_) { - return arguments.length ? (velocityDecay = 1 - _, simulation) : 1 - velocityDecay; - }, + while (q = quads.pop()) { - force: function(name, _) { - return arguments.length > 1 ? ((_ == null ? forces.remove(name) : forces.set(name, initializeForce(_))), simulation) : forces.get(name); - }, + // Stop searching if this quadrant can’t contain a closer node. + if (!(node = q.node) + || (x1 = q.x0) > x3 + || (y1 = q.y0) > y3 + || (x2 = q.x1) < x0 + || (y2 = q.y1) < y0) continue; - find: function(x, y, radius) { - var i = 0, - n = nodes.length, - dx, - dy, - d2, - node, - closest; + // Bisect the current quadrant. + if (node.length) { + var xm = (x1 + x2) / 2, + ym = (y1 + y2) / 2; - if (radius == null) radius = Infinity; - else radius *= radius; + quads.push( + new Quad(node[3], xm, ym, x2, y2), + new Quad(node[2], x1, ym, xm, y2), + new Quad(node[1], xm, y1, x2, ym), + new Quad(node[0], x1, y1, xm, ym) + ); - for (i = 0; i < n; ++i) { - node = nodes[i]; - dx = x - node.x; - dy = y - node.y; - d2 = dx * dx + dy * dy; - if (d2 < radius) closest = node, radius = d2; + // Visit the closest quadrant first. + if (i = (y >= ym) << 1 | (x >= xm)) { + q = quads[quads.length - 1]; + quads[quads.length - 1] = quads[quads.length - 1 - i]; + quads[quads.length - 1 - i] = q; } + } - return closest; - }, - - on: function(name, _) { - return arguments.length > 1 ? (event.on(name, _), simulation) : event.on(name); + // Visit this point. (Visiting coincident points isn’t necessary!) + else { + var dx = x - +this._x.call(null, node.data), + dy = y - +this._y.call(null, node.data), + d2 = dx * dx + dy * dy; + if (d2 < radius) { + var d = Math.sqrt(radius = d2); + x0 = x - d, y0 = y - d; + x3 = x + d, y3 = y + d; + data = node.data; + } } - }; + } + + return data; } -function manyBody() { - var nodes, - node, - alpha, - strength = constant$7(-30), - strengths, - distanceMin2 = 1, - distanceMax2 = Infinity, - theta2 = 0.81; - - function force(_) { - var i, n = nodes.length, tree = quadtree(nodes, x$1, y$1).visitAfter(accumulate); - for (alpha = _, i = 0; i < n; ++i) node = nodes[i], tree.visit(apply); - } - - function initialize() { - if (!nodes) return; - var i, n = nodes.length, node; - strengths = new Array(n); - for (i = 0; i < n; ++i) node = nodes[i], strengths[node.index] = +strength(node, i, nodes); - } - - function accumulate(quad) { - var strength = 0, q, c, weight = 0, x, y, i; +function tree_remove(d) { + if (isNaN(x = +this._x.call(null, d)) || isNaN(y = +this._y.call(null, d))) return this; // ignore invalid points - // For internal nodes, accumulate forces from child quadrants. - if (quad.length) { - for (x = y = i = 0; i < 4; ++i) { - if ((q = quad[i]) && (c = Math.abs(q.value))) { - strength += q.value, weight += c, x += c * q.x, y += c * q.y; - } - } - quad.x = x / weight; - quad.y = y / weight; - } + var parent, + node = this._root, + retainer, + previous, + next, + x0 = this._x0, + y0 = this._y0, + x1 = this._x1, + y1 = this._y1, + x, + y, + xm, + ym, + right, + bottom, + i, + j; - // For leaf nodes, accumulate forces from coincident quadrants. - else { - q = quad; - q.x = q.data.x; - q.y = q.data.y; - do strength += strengths[q.data.index]; - while (q = q.next); - } + // If the tree is empty, initialize the root as a leaf. + if (!node) return this; - quad.value = strength; + // Find the leaf node for the point. + // While descending, also retain the deepest parent with a non-removed sibling. + if (node.length) while (true) { + if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; + if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; + if (!(parent = node, node = node[i = bottom << 1 | right])) return this; + if (!node.length) break; + if (parent[(i + 1) & 3] || parent[(i + 2) & 3] || parent[(i + 3) & 3]) retainer = parent, j = i; } - function apply(quad, x1, _, x2) { - if (!quad.value) return true; - - var x = quad.x - node.x, - y = quad.y - node.y, - w = x2 - x1, - l = x * x + y * y; + // Find the point to remove. + while (node.data !== d) if (!(previous = node, node = node.next)) return this; + if (next = node.next) delete node.next; - // Apply the Barnes-Hut approximation if possible. - // Limit forces for very close nodes; randomize direction if coincident. - if (w * w / theta2 < l) { - if (l < distanceMax2) { - if (x === 0) x = jiggle(), l += x * x; - if (y === 0) y = jiggle(), l += y * y; - if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l); - node.vx += x * quad.value * alpha / l; - node.vy += y * quad.value * alpha / l; - } - return true; - } + // If there are multiple coincident points, remove just the point. + if (previous) return (next ? previous.next = next : delete previous.next), this; - // Otherwise, process points directly. - else if (quad.length || l >= distanceMax2) return; + // If this is the root point, remove it. + if (!parent) return this._root = next, this; - // Limit forces for very close nodes; randomize direction if coincident. - if (quad.data !== node || quad.next) { - if (x === 0) x = jiggle(), l += x * x; - if (y === 0) y = jiggle(), l += y * y; - if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l); - } + // Remove this leaf. + next ? parent[i] = next : delete parent[i]; - do if (quad.data !== node) { - w = strengths[quad.data.index] * alpha / l; - node.vx += x * w; - node.vy += y * w; - } while (quad = quad.next); + // If the parent now contains exactly one leaf, collapse superfluous parents. + if ((node = parent[0] || parent[1] || parent[2] || parent[3]) + && node === (parent[3] || parent[2] || parent[1] || parent[0]) + && !node.length) { + if (retainer) retainer[j] = node; + else this._root = node; } - force.initialize = function(_) { - nodes = _; - initialize(); - }; - - force.strength = function(_) { - return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : strength; - }; - - force.distanceMin = function(_) { - return arguments.length ? (distanceMin2 = _ * _, force) : Math.sqrt(distanceMin2); - }; - - force.distanceMax = function(_) { - return arguments.length ? (distanceMax2 = _ * _, force) : Math.sqrt(distanceMax2); - }; - - force.theta = function(_) { - return arguments.length ? (theta2 = _ * _, force) : Math.sqrt(theta2); - }; + return this; +} - return force; +function removeAll(data) { + for (var i = 0, n = data.length; i < n; ++i) this.remove(data[i]); + return this; } -function radial(radius, x, y) { - var nodes, - strength = constant$7(0.1), - strengths, - radiuses; +function tree_root() { + return this._root; +} - if (typeof radius !== "function") radius = constant$7(+radius); - if (x == null) x = 0; - if (y == null) y = 0; +function tree_size() { + var size = 0; + this.visit(function(node) { + if (!node.length) do ++size; while (node = node.next) + }); + return size; +} - function force(alpha) { - for (var i = 0, n = nodes.length; i < n; ++i) { - var node = nodes[i], - dx = node.x - x || 1e-6, - dy = node.y - y || 1e-6, - r = Math.sqrt(dx * dx + dy * dy), - k = (radiuses[i] - r) * strengths[i] * alpha / r; - node.vx += dx * k; - node.vy += dy * k; +function tree_visit(callback) { + var quads = [], q, node = this._root, child, x0, y0, x1, y1; + if (node) quads.push(new Quad(node, this._x0, this._y0, this._x1, this._y1)); + while (q = quads.pop()) { + if (!callback(node = q.node, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1) && node.length) { + var xm = (x0 + x1) / 2, ym = (y0 + y1) / 2; + if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1)); + if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1)); + if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym)); + if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym)); } } + return this; +} - function initialize() { - if (!nodes) return; - var i, n = nodes.length; - strengths = new Array(n); - radiuses = new Array(n); - for (i = 0; i < n; ++i) { - radiuses[i] = +radius(nodes[i], i, nodes); - strengths[i] = isNaN(radiuses[i]) ? 0 : +strength(nodes[i], i, nodes); +function tree_visitAfter(callback) { + var quads = [], next = [], q; + if (this._root) quads.push(new Quad(this._root, this._x0, this._y0, this._x1, this._y1)); + while (q = quads.pop()) { + var node = q.node; + if (node.length) { + var child, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1, xm = (x0 + x1) / 2, ym = (y0 + y1) / 2; + if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym)); + if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym)); + if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1)); + if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1)); } + next.push(q); + } + while (q = next.pop()) { + callback(q.node, q.x0, q.y0, q.x1, q.y1); } + return this; +} - force.initialize = function(_) { - nodes = _, initialize(); - }; +function defaultX(d) { + return d[0]; +} - force.strength = function(_) { - return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : strength; - }; +function tree_x(_) { + return arguments.length ? (this._x = _, this) : this._x; +} - force.radius = function(_) { - return arguments.length ? (radius = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : radius; - }; +function defaultY(d) { + return d[1]; +} - force.x = function(_) { - return arguments.length ? (x = +_, force) : x; - }; +function tree_y(_) { + return arguments.length ? (this._y = _, this) : this._y; +} - force.y = function(_) { - return arguments.length ? (y = +_, force) : y; - }; +function quadtree(nodes, x, y) { + var tree = new Quadtree(x == null ? defaultX : x, y == null ? defaultY : y, NaN, NaN, NaN, NaN); + return nodes == null ? tree : tree.addAll(nodes); +} - return force; +function Quadtree(x, y, x0, y0, x1, y1) { + this._x = x; + this._y = y; + this._x0 = x0; + this._y0 = y0; + this._x1 = x1; + this._y1 = y1; + this._root = undefined; +} + +function leaf_copy(leaf) { + var copy = {data: leaf.data}, next = copy; + while (leaf = leaf.next) next = next.next = {data: leaf.data}; + return copy; } -function x$2(x) { - var strength = constant$7(0.1), +var treeProto = quadtree.prototype = Quadtree.prototype; + +treeProto.copy = function() { + var copy = new Quadtree(this._x, this._y, this._x0, this._y0, this._x1, this._y1), + node = this._root, nodes, - strengths, - xz; + child; - if (typeof x !== "function") x = constant$7(x == null ? 0 : +x); + if (!node) return copy; - function force(alpha) { - for (var i = 0, n = nodes.length, node; i < n; ++i) { - node = nodes[i], node.vx += (xz[i] - node.x) * strengths[i] * alpha; - } - } + if (!node.length) return copy._root = leaf_copy(node), copy; + + nodes = [{source: node, target: copy._root = new Array(4)}]; + while (node = nodes.pop()) { + for (var i = 0; i < 4; ++i) { + if (child = node.source[i]) { + if (child.length) nodes.push({source: child, target: node.target[i] = new Array(4)}); + else node.target[i] = leaf_copy(child); + } + } + } + + return copy; +}; + +treeProto.add = tree_add; +treeProto.addAll = addAll; +treeProto.cover = tree_cover; +treeProto.data = tree_data; +treeProto.extent = tree_extent; +treeProto.find = tree_find; +treeProto.remove = tree_remove; +treeProto.removeAll = removeAll; +treeProto.root = tree_root; +treeProto.size = tree_size; +treeProto.visit = tree_visit; +treeProto.visitAfter = tree_visitAfter; +treeProto.x = tree_x; +treeProto.y = tree_y; + +function constant$4(x) { + return function() { + return x; + }; +} + +function jiggle(random) { + return (random() - 0.5) * 1e-6; +} + +function x$3(d) { + return d.x + d.vx; +} + +function y$3(d) { + return d.y + d.vy; +} + +function collide(radius) { + var nodes, + radii, + random, + strength = 1, + iterations = 1; + + if (typeof radius !== "function") radius = constant$4(radius == null ? 1 : +radius); + + function force() { + var i, n = nodes.length, + tree, + node, + xi, + yi, + ri, + ri2; + + for (var k = 0; k < iterations; ++k) { + tree = quadtree(nodes, x$3, y$3).visitAfter(prepare); + for (i = 0; i < n; ++i) { + node = nodes[i]; + ri = radii[node.index], ri2 = ri * ri; + xi = node.x + node.vx; + yi = node.y + node.vy; + tree.visit(apply); + } + } + + function apply(quad, x0, y0, x1, y1) { + var data = quad.data, rj = quad.r, r = ri + rj; + if (data) { + if (data.index > node.index) { + var x = xi - data.x - data.vx, + y = yi - data.y - data.vy, + l = x * x + y * y; + if (l < r * r) { + if (x === 0) x = jiggle(random), l += x * x; + if (y === 0) y = jiggle(random), l += y * y; + l = (r - (l = Math.sqrt(l))) / l * strength; + node.vx += (x *= l) * (r = (rj *= rj) / (ri2 + rj)); + node.vy += (y *= l) * r; + data.vx -= x * (r = 1 - r); + data.vy -= y * r; + } + } + return; + } + return x0 > xi + r || x1 < xi - r || y0 > yi + r || y1 < yi - r; + } + } + + function prepare(quad) { + if (quad.data) return quad.r = radii[quad.data.index]; + for (var i = quad.r = 0; i < 4; ++i) { + if (quad[i] && quad[i].r > quad.r) { + quad.r = quad[i].r; + } + } + } function initialize() { if (!nodes) return; - var i, n = nodes.length; - strengths = new Array(n); - xz = new Array(n); - for (i = 0; i < n; ++i) { - strengths[i] = isNaN(xz[i] = +x(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes); - } + var i, n = nodes.length, node; + radii = new Array(n); + for (i = 0; i < n; ++i) node = nodes[i], radii[node.index] = +radius(node, i, nodes); } - force.initialize = function(_) { - nodes = _; + force.initialize = function(_nodes, _random) { + nodes = _nodes; + random = _random; initialize(); }; + force.iterations = function(_) { + return arguments.length ? (iterations = +_, force) : iterations; + }; + force.strength = function(_) { - return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : strength; + return arguments.length ? (strength = +_, force) : strength; }; - force.x = function(_) { - return arguments.length ? (x = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : x; + force.radius = function(_) { + return arguments.length ? (radius = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : radius; }; return force; } -function y$2(y) { - var strength = constant$7(0.1), - nodes, +function index$3(d) { + return d.index; +} + +function find(nodeById, nodeId) { + var node = nodeById.get(nodeId); + if (!node) throw new Error("node not found: " + nodeId); + return node; +} + +function link$2(links) { + var id = index$3, + strength = defaultStrength, strengths, - yz; + distance = constant$4(30), + distances, + nodes, + count, + bias, + random, + iterations = 1; - if (typeof y !== "function") y = constant$7(y == null ? 0 : +y); + if (links == null) links = []; + + function defaultStrength(link) { + return 1 / Math.min(count[link.source.index], count[link.target.index]); + } function force(alpha) { - for (var i = 0, n = nodes.length, node; i < n; ++i) { - node = nodes[i], node.vy += (yz[i] - node.y) * strengths[i] * alpha; + for (var k = 0, n = links.length; k < iterations; ++k) { + for (var i = 0, link, source, target, x, y, l, b; i < n; ++i) { + link = links[i], source = link.source, target = link.target; + x = target.x + target.vx - source.x - source.vx || jiggle(random); + y = target.y + target.vy - source.y - source.vy || jiggle(random); + l = Math.sqrt(x * x + y * y); + l = (l - distances[i]) / l * alpha * strengths[i]; + x *= l, y *= l; + target.vx -= x * (b = bias[i]); + target.vy -= y * b; + source.vx += x * (b = 1 - b); + source.vy += y * b; + } } } function initialize() { if (!nodes) return; - var i, n = nodes.length; - strengths = new Array(n); - yz = new Array(n); - for (i = 0; i < n; ++i) { - strengths[i] = isNaN(yz[i] = +y(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes); + + var i, + n = nodes.length, + m = links.length, + nodeById = new Map(nodes.map((d, i) => [id(d, i, nodes), d])), + link; + + for (i = 0, count = new Array(n); i < m; ++i) { + link = links[i], link.index = i; + if (typeof link.source !== "object") link.source = find(nodeById, link.source); + if (typeof link.target !== "object") link.target = find(nodeById, link.target); + count[link.source.index] = (count[link.source.index] || 0) + 1; + count[link.target.index] = (count[link.target.index] || 0) + 1; + } + + for (i = 0, bias = new Array(m); i < m; ++i) { + link = links[i], bias[i] = count[link.source.index] / (count[link.source.index] + count[link.target.index]); } + + strengths = new Array(m), initializeStrength(); + distances = new Array(m), initializeDistance(); } - force.initialize = function(_) { - nodes = _; + function initializeStrength() { + if (!nodes) return; + + for (var i = 0, n = links.length; i < n; ++i) { + strengths[i] = +strength(links[i], i, links); + } + } + + function initializeDistance() { + if (!nodes) return; + + for (var i = 0, n = links.length; i < n; ++i) { + distances[i] = +distance(links[i], i, links); + } + } + + force.initialize = function(_nodes, _random) { + nodes = _nodes; + random = _random; initialize(); }; + force.links = function(_) { + return arguments.length ? (links = _, initialize(), force) : links; + }; + + force.id = function(_) { + return arguments.length ? (id = _, force) : id; + }; + + force.iterations = function(_) { + return arguments.length ? (iterations = +_, force) : iterations; + }; + force.strength = function(_) { - return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : strength; + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$4(+_), initializeStrength(), force) : strength; }; - force.y = function(_) { - return arguments.length ? (y = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : y; + force.distance = function(_) { + return arguments.length ? (distance = typeof _ === "function" ? _ : constant$4(+_), initializeDistance(), force) : distance; }; return force; } -// Computes the decimal coefficient and exponent of the specified number x with -// significant digits p, where x is positive and p is in [1, 21] or undefined. -// For example, formatDecimal(1.23) returns ["123", 0]. -function formatDecimal(x, p) { - if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf("e")) < 0) return null; // NaN, ±Infinity - var i, coefficient = x.slice(0, i); +// https://en.wikipedia.org/wiki/Linear_congruential_generator#Parameters_in_common_use +const a$1 = 1664525; +const c$3 = 1013904223; +const m = 4294967296; // 2^32 - // The string returned by toExponential either has the form \d\.\d+e[-+]\d+ - // (e.g., 1.2e+3) or the form \de[-+]\d+ (e.g., 1e+3). - return [ - coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient, - +x.slice(i + 1) - ]; +function lcg$1() { + let s = 1; + return () => (s = (a$1 * s + c$3) % m) / m; } -function exponent$1(x) { - return x = formatDecimal(Math.abs(x)), x ? x[1] : NaN; +function x$2(d) { + return d.x; } -function formatGroup(grouping, thousands) { - return function(value, width) { - var i = value.length, - t = [], - j = 0, - g = grouping[0], - length = 0; - - while (i > 0 && g > 0) { - if (length + g + 1 > width) g = Math.max(1, width - length); - t.push(value.substring(i -= g, i + g)); - if ((length += g + 1) > width) break; - g = grouping[j = (j + 1) % grouping.length]; - } - - return t.reverse().join(thousands); - }; +function y$2(d) { + return d.y; } -function formatNumerals(numerals) { - return function(value) { - return value.replace(/[0-9]/g, function(i) { - return numerals[+i]; - }); - }; -} +var initialRadius = 10, + initialAngle = Math.PI * (3 - Math.sqrt(5)); -// [[fill]align][sign][symbol][0][width][,][.precision][~][type] -var re = /^(?:(.)?([<>=^]))?([+\-( ])?([$#])?(0)?(\d+)?(,)?(\.\d+)?(~)?([a-z%])?$/i; +function simulation(nodes) { + var simulation, + alpha = 1, + alphaMin = 0.001, + alphaDecay = 1 - Math.pow(alphaMin, 1 / 300), + alphaTarget = 0, + velocityDecay = 0.6, + forces = new Map(), + stepper = timer(step), + event = dispatch("tick", "end"), + random = lcg$1(); -function formatSpecifier(specifier) { - if (!(match = re.exec(specifier))) throw new Error("invalid format: " + specifier); - var match; - return new FormatSpecifier({ - fill: match[1], - align: match[2], - sign: match[3], - symbol: match[4], - zero: match[5], - width: match[6], - comma: match[7], - precision: match[8] && match[8].slice(1), - trim: match[9], - type: match[10] - }); -} - -formatSpecifier.prototype = FormatSpecifier.prototype; // instanceof - -function FormatSpecifier(specifier) { - this.fill = specifier.fill === undefined ? " " : specifier.fill + ""; - this.align = specifier.align === undefined ? ">" : specifier.align + ""; - this.sign = specifier.sign === undefined ? "-" : specifier.sign + ""; - this.symbol = specifier.symbol === undefined ? "" : specifier.symbol + ""; - this.zero = !!specifier.zero; - this.width = specifier.width === undefined ? undefined : +specifier.width; - this.comma = !!specifier.comma; - this.precision = specifier.precision === undefined ? undefined : +specifier.precision; - this.trim = !!specifier.trim; - this.type = specifier.type === undefined ? "" : specifier.type + ""; -} - -FormatSpecifier.prototype.toString = function() { - return this.fill - + this.align - + this.sign - + this.symbol - + (this.zero ? "0" : "") - + (this.width === undefined ? "" : Math.max(1, this.width | 0)) - + (this.comma ? "," : "") - + (this.precision === undefined ? "" : "." + Math.max(0, this.precision | 0)) - + (this.trim ? "~" : "") - + this.type; -}; + if (nodes == null) nodes = []; -// Trims insignificant zeros, e.g., replaces 1.2000k with 1.2k. -function formatTrim(s) { - out: for (var n = s.length, i = 1, i0 = -1, i1; i < n; ++i) { - switch (s[i]) { - case ".": i0 = i1 = i; break; - case "0": if (i0 === 0) i0 = i; i1 = i; break; - default: if (!+s[i]) break out; if (i0 > 0) i0 = 0; break; + function step() { + tick(); + event.call("tick", simulation); + if (alpha < alphaMin) { + stepper.stop(); + event.call("end", simulation); } } - return i0 > 0 ? s.slice(0, i0) + s.slice(i1 + 1) : s; -} -var prefixExponent; + function tick(iterations) { + var i, n = nodes.length, node; -function formatPrefixAuto(x, p) { - var d = formatDecimal(x, p); - if (!d) return x + ""; - var coefficient = d[0], - exponent = d[1], - i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1, - n = coefficient.length; - return i === n ? coefficient - : i > n ? coefficient + new Array(i - n + 1).join("0") - : i > 0 ? coefficient.slice(0, i) + "." + coefficient.slice(i) - : "0." + new Array(1 - i).join("0") + formatDecimal(x, Math.max(0, p + i - 1))[0]; // less than 1y! -} + if (iterations === undefined) iterations = 1; -function formatRounded(x, p) { - var d = formatDecimal(x, p); - if (!d) return x + ""; - var coefficient = d[0], - exponent = d[1]; - return exponent < 0 ? "0." + new Array(-exponent).join("0") + coefficient - : coefficient.length > exponent + 1 ? coefficient.slice(0, exponent + 1) + "." + coefficient.slice(exponent + 1) - : coefficient + new Array(exponent - coefficient.length + 2).join("0"); -} + for (var k = 0; k < iterations; ++k) { + alpha += (alphaTarget - alpha) * alphaDecay; -var formatTypes = { - "%": function(x, p) { return (x * 100).toFixed(p); }, - "b": function(x) { return Math.round(x).toString(2); }, - "c": function(x) { return x + ""; }, - "d": function(x) { return Math.round(x).toString(10); }, - "e": function(x, p) { return x.toExponential(p); }, - "f": function(x, p) { return x.toFixed(p); }, - "g": function(x, p) { return x.toPrecision(p); }, - "o": function(x) { return Math.round(x).toString(8); }, - "p": function(x, p) { return formatRounded(x * 100, p); }, - "r": formatRounded, - "s": formatPrefixAuto, - "X": function(x) { return Math.round(x).toString(16).toUpperCase(); }, - "x": function(x) { return Math.round(x).toString(16); } -}; + forces.forEach(function(force) { + force(alpha); + }); -function identity$3(x) { - return x; -} + for (i = 0; i < n; ++i) { + node = nodes[i]; + if (node.fx == null) node.x += node.vx *= velocityDecay; + else node.x = node.fx, node.vx = 0; + if (node.fy == null) node.y += node.vy *= velocityDecay; + else node.y = node.fy, node.vy = 0; + } + } -var map$2 = Array.prototype.map, - prefixes = ["y","z","a","f","p","n","\xB5","m","","k","M","G","T","P","E","Z","Y"]; + return simulation; + } -function formatLocale(locale) { - var group = locale.grouping === undefined || locale.thousands === undefined ? identity$3 : formatGroup(map$2.call(locale.grouping, Number), locale.thousands + ""), - currencyPrefix = locale.currency === undefined ? "" : locale.currency[0] + "", - currencySuffix = locale.currency === undefined ? "" : locale.currency[1] + "", - decimal = locale.decimal === undefined ? "." : locale.decimal + "", - numerals = locale.numerals === undefined ? identity$3 : formatNumerals(map$2.call(locale.numerals, String)), - percent = locale.percent === undefined ? "%" : locale.percent + "", - minus = locale.minus === undefined ? "-" : locale.minus + "", - nan = locale.nan === undefined ? "NaN" : locale.nan + ""; + function initializeNodes() { + for (var i = 0, n = nodes.length, node; i < n; ++i) { + node = nodes[i], node.index = i; + if (node.fx != null) node.x = node.fx; + if (node.fy != null) node.y = node.fy; + if (isNaN(node.x) || isNaN(node.y)) { + var radius = initialRadius * Math.sqrt(0.5 + i), angle = i * initialAngle; + node.x = radius * Math.cos(angle); + node.y = radius * Math.sin(angle); + } + if (isNaN(node.vx) || isNaN(node.vy)) { + node.vx = node.vy = 0; + } + } + } - function newFormat(specifier) { - specifier = formatSpecifier(specifier); + function initializeForce(force) { + if (force.initialize) force.initialize(nodes, random); + return force; + } - var fill = specifier.fill, - align = specifier.align, - sign = specifier.sign, - symbol = specifier.symbol, - zero = specifier.zero, - width = specifier.width, - comma = specifier.comma, - precision = specifier.precision, - trim = specifier.trim, - type = specifier.type; + initializeNodes(); - // The "n" type is an alias for ",g". - if (type === "n") comma = true, type = "g"; + return simulation = { + tick: tick, - // The "" type, and any invalid type, is an alias for ".12~g". - else if (!formatTypes[type]) precision === undefined && (precision = 12), trim = true, type = "g"; + restart: function() { + return stepper.restart(step), simulation; + }, - // If zero fill is specified, padding goes after sign and before digits. - if (zero || (fill === "0" && align === "=")) zero = true, fill = "0", align = "="; + stop: function() { + return stepper.stop(), simulation; + }, - // Compute the prefix and suffix. - // For SI-prefix, the suffix is lazily computed. - var prefix = symbol === "$" ? currencyPrefix : symbol === "#" && /[boxX]/.test(type) ? "0" + type.toLowerCase() : "", - suffix = symbol === "$" ? currencySuffix : /[%p]/.test(type) ? percent : ""; + nodes: function(_) { + return arguments.length ? (nodes = _, initializeNodes(), forces.forEach(initializeForce), simulation) : nodes; + }, - // What format function should we use? - // Is this an integer type? - // Can this type generate exponential notation? - var formatType = formatTypes[type], - maybeSuffix = /[defgprs%]/.test(type); + alpha: function(_) { + return arguments.length ? (alpha = +_, simulation) : alpha; + }, - // Set the default precision if not specified, - // or clamp the specified precision to the supported range. - // For significant precision, it must be in [1, 21]. - // For fixed precision, it must be in [0, 20]. - precision = precision === undefined ? 6 - : /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision)) - : Math.max(0, Math.min(20, precision)); + alphaMin: function(_) { + return arguments.length ? (alphaMin = +_, simulation) : alphaMin; + }, - function format(value) { - var valuePrefix = prefix, - valueSuffix = suffix, - i, n, c; + alphaDecay: function(_) { + return arguments.length ? (alphaDecay = +_, simulation) : +alphaDecay; + }, - if (type === "c") { - valueSuffix = formatType(value) + valueSuffix; - value = ""; - } else { - value = +value; + alphaTarget: function(_) { + return arguments.length ? (alphaTarget = +_, simulation) : alphaTarget; + }, - // Determine the sign. -0 is not less than 0, but 1 / -0 is! - var valueNegative = value < 0 || 1 / value < 0; + velocityDecay: function(_) { + return arguments.length ? (velocityDecay = 1 - _, simulation) : 1 - velocityDecay; + }, - // Perform the initial formatting. - value = isNaN(value) ? nan : formatType(Math.abs(value), precision); + randomSource: function(_) { + return arguments.length ? (random = _, forces.forEach(initializeForce), simulation) : random; + }, - // Trim insignificant zeros. - if (trim) value = formatTrim(value); + force: function(name, _) { + return arguments.length > 1 ? ((_ == null ? forces.delete(name) : forces.set(name, initializeForce(_))), simulation) : forces.get(name); + }, - // If a negative value rounds to zero after formatting, and no explicit positive sign is requested, hide the sign. - if (valueNegative && +value === 0 && sign !== "+") valueNegative = false; + find: function(x, y, radius) { + var i = 0, + n = nodes.length, + dx, + dy, + d2, + node, + closest; - // Compute the prefix and suffix. - valuePrefix = (valueNegative ? (sign === "(" ? sign : minus) : sign === "-" || sign === "(" ? "" : sign) + valuePrefix; - valueSuffix = (type === "s" ? prefixes[8 + prefixExponent / 3] : "") + valueSuffix + (valueNegative && sign === "(" ? ")" : ""); + if (radius == null) radius = Infinity; + else radius *= radius; - // Break the formatted value into the integer “value” part that can be - // grouped, and fractional or exponential “suffix” part that is not. - if (maybeSuffix) { - i = -1, n = value.length; - while (++i < n) { - if (c = value.charCodeAt(i), 48 > c || c > 57) { - valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix; - value = value.slice(0, i); - break; - } - } - } + for (i = 0; i < n; ++i) { + node = nodes[i]; + dx = x - node.x; + dy = y - node.y; + d2 = dx * dx + dy * dy; + if (d2 < radius) closest = node, radius = d2; } - // If the fill character is not "0", grouping is applied before padding. - if (comma && !zero) value = group(value, Infinity); - - // Compute the padding. - var length = valuePrefix.length + value.length + valueSuffix.length, - padding = length < width ? new Array(width - length + 1).join(fill) : ""; + return closest; + }, - // If the fill character is "0", grouping is applied after padding. - if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = ""; + on: function(name, _) { + return arguments.length > 1 ? (event.on(name, _), simulation) : event.on(name); + } + }; +} - // Reconstruct the final output based on the desired alignment. - switch (align) { - case "<": value = valuePrefix + value + valueSuffix + padding; break; - case "=": value = valuePrefix + padding + value + valueSuffix; break; - case "^": value = padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length); break; - default: value = padding + valuePrefix + value + valueSuffix; break; - } - - return numerals(value); - } - - format.toString = function() { - return specifier + ""; - }; +function manyBody() { + var nodes, + node, + random, + alpha, + strength = constant$4(-30), + strengths, + distanceMin2 = 1, + distanceMax2 = Infinity, + theta2 = 0.81; - return format; + function force(_) { + var i, n = nodes.length, tree = quadtree(nodes, x$2, y$2).visitAfter(accumulate); + for (alpha = _, i = 0; i < n; ++i) node = nodes[i], tree.visit(apply); } - function formatPrefix(specifier, value) { - var f = newFormat((specifier = formatSpecifier(specifier), specifier.type = "f", specifier)), - e = Math.max(-8, Math.min(8, Math.floor(exponent$1(value) / 3))) * 3, - k = Math.pow(10, -e), - prefix = prefixes[8 + e / 3]; - return function(value) { - return f(k * value) + prefix; - }; + function initialize() { + if (!nodes) return; + var i, n = nodes.length, node; + strengths = new Array(n); + for (i = 0; i < n; ++i) node = nodes[i], strengths[node.index] = +strength(node, i, nodes); } - return { - format: newFormat, - formatPrefix: formatPrefix - }; -} - -var locale; + function accumulate(quad) { + var strength = 0, q, c, weight = 0, x, y, i; -defaultLocale({ - decimal: ".", - thousands: ",", - grouping: [3], - currency: ["$", ""], - minus: "-" -}); + // For internal nodes, accumulate forces from child quadrants. + if (quad.length) { + for (x = y = i = 0; i < 4; ++i) { + if ((q = quad[i]) && (c = Math.abs(q.value))) { + strength += q.value, weight += c, x += c * q.x, y += c * q.y; + } + } + quad.x = x / weight; + quad.y = y / weight; + } -function defaultLocale(definition) { - locale = formatLocale(definition); - exports.format = locale.format; - exports.formatPrefix = locale.formatPrefix; - return locale; -} + // For leaf nodes, accumulate forces from coincident quadrants. + else { + q = quad; + q.x = q.data.x; + q.y = q.data.y; + do strength += strengths[q.data.index]; + while (q = q.next); + } -function precisionFixed(step) { - return Math.max(0, -exponent$1(Math.abs(step))); -} + quad.value = strength; + } -function precisionPrefix(step, value) { - return Math.max(0, Math.max(-8, Math.min(8, Math.floor(exponent$1(value) / 3))) * 3 - exponent$1(Math.abs(step))); -} + function apply(quad, x1, _, x2) { + if (!quad.value) return true; -function precisionRound(step, max) { - step = Math.abs(step), max = Math.abs(max) - step; - return Math.max(0, exponent$1(max) - exponent$1(step)) + 1; -} + var x = quad.x - node.x, + y = quad.y - node.y, + w = x2 - x1, + l = x * x + y * y; -// Adds floating point numbers with twice the normal precision. -// Reference: J. R. Shewchuk, Adaptive Precision Floating-Point Arithmetic and -// Fast Robust Geometric Predicates, Discrete & Computational Geometry 18(3) -// 305–363 (1997). -// Code adapted from GeographicLib by Charles F. F. Karney, -// http://geographiclib.sourceforge.net/ + // Apply the Barnes-Hut approximation if possible. + // Limit forces for very close nodes; randomize direction if coincident. + if (w * w / theta2 < l) { + if (l < distanceMax2) { + if (x === 0) x = jiggle(random), l += x * x; + if (y === 0) y = jiggle(random), l += y * y; + if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l); + node.vx += x * quad.value * alpha / l; + node.vy += y * quad.value * alpha / l; + } + return true; + } -function adder() { - return new Adder; -} + // Otherwise, process points directly. + else if (quad.length || l >= distanceMax2) return; -function Adder() { - this.reset(); -} + // Limit forces for very close nodes; randomize direction if coincident. + if (quad.data !== node || quad.next) { + if (x === 0) x = jiggle(random), l += x * x; + if (y === 0) y = jiggle(random), l += y * y; + if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l); + } -Adder.prototype = { - constructor: Adder, - reset: function() { - this.s = // rounded value - this.t = 0; // exact error - }, - add: function(y) { - add$1(temp, y, this.t); - add$1(this, temp.s, this.s); - if (this.s) this.t += temp.t; - else this.s = temp.t; - }, - valueOf: function() { - return this.s; + do if (quad.data !== node) { + w = strengths[quad.data.index] * alpha / l; + node.vx += x * w; + node.vy += y * w; + } while (quad = quad.next); } -}; -var temp = new Adder; - -function add$1(adder, a, b) { - var x = adder.s = a + b, - bv = x - a, - av = x - bv; - adder.t = (a - av) + (b - bv); -} + force.initialize = function(_nodes, _random) { + nodes = _nodes; + random = _random; + initialize(); + }; -var epsilon$2 = 1e-6; -var epsilon2$1 = 1e-12; -var pi$3 = Math.PI; -var halfPi$2 = pi$3 / 2; -var quarterPi = pi$3 / 4; -var tau$3 = pi$3 * 2; + force.strength = function(_) { + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : strength; + }; -var degrees$1 = 180 / pi$3; -var radians = pi$3 / 180; + force.distanceMin = function(_) { + return arguments.length ? (distanceMin2 = _ * _, force) : Math.sqrt(distanceMin2); + }; -var abs = Math.abs; -var atan = Math.atan; -var atan2 = Math.atan2; -var cos$1 = Math.cos; -var ceil = Math.ceil; -var exp = Math.exp; -var log = Math.log; -var pow = Math.pow; -var sin$1 = Math.sin; -var sign = Math.sign || function(x) { return x > 0 ? 1 : x < 0 ? -1 : 0; }; -var sqrt = Math.sqrt; -var tan = Math.tan; + force.distanceMax = function(_) { + return arguments.length ? (distanceMax2 = _ * _, force) : Math.sqrt(distanceMax2); + }; -function acos(x) { - return x > 1 ? 0 : x < -1 ? pi$3 : Math.acos(x); -} + force.theta = function(_) { + return arguments.length ? (theta2 = _ * _, force) : Math.sqrt(theta2); + }; -function asin(x) { - return x > 1 ? halfPi$2 : x < -1 ? -halfPi$2 : Math.asin(x); + return force; } -function haversin(x) { - return (x = sin$1(x / 2)) * x; -} +function radial$1(radius, x, y) { + var nodes, + strength = constant$4(0.1), + strengths, + radiuses; -function noop$2() {} + if (typeof radius !== "function") radius = constant$4(+radius); + if (x == null) x = 0; + if (y == null) y = 0; -function streamGeometry(geometry, stream) { - if (geometry && streamGeometryType.hasOwnProperty(geometry.type)) { - streamGeometryType[geometry.type](geometry, stream); + function force(alpha) { + for (var i = 0, n = nodes.length; i < n; ++i) { + var node = nodes[i], + dx = node.x - x || 1e-6, + dy = node.y - y || 1e-6, + r = Math.sqrt(dx * dx + dy * dy), + k = (radiuses[i] - r) * strengths[i] * alpha / r; + node.vx += dx * k; + node.vy += dy * k; + } } -} -var streamObjectType = { - Feature: function(object, stream) { - streamGeometry(object.geometry, stream); - }, - FeatureCollection: function(object, stream) { - var features = object.features, i = -1, n = features.length; - while (++i < n) streamGeometry(features[i].geometry, stream); + function initialize() { + if (!nodes) return; + var i, n = nodes.length; + strengths = new Array(n); + radiuses = new Array(n); + for (i = 0; i < n; ++i) { + radiuses[i] = +radius(nodes[i], i, nodes); + strengths[i] = isNaN(radiuses[i]) ? 0 : +strength(nodes[i], i, nodes); + } } -}; -var streamGeometryType = { - Sphere: function(object, stream) { - stream.sphere(); - }, - Point: function(object, stream) { - object = object.coordinates; - stream.point(object[0], object[1], object[2]); - }, - MultiPoint: function(object, stream) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) object = coordinates[i], stream.point(object[0], object[1], object[2]); - }, - LineString: function(object, stream) { - streamLine(object.coordinates, stream, 0); - }, - MultiLineString: function(object, stream) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) streamLine(coordinates[i], stream, 0); - }, - Polygon: function(object, stream) { - streamPolygon(object.coordinates, stream); - }, - MultiPolygon: function(object, stream) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) streamPolygon(coordinates[i], stream); - }, - GeometryCollection: function(object, stream) { - var geometries = object.geometries, i = -1, n = geometries.length; - while (++i < n) streamGeometry(geometries[i], stream); - } -}; + force.initialize = function(_) { + nodes = _, initialize(); + }; -function streamLine(coordinates, stream, closed) { - var i = -1, n = coordinates.length - closed, coordinate; - stream.lineStart(); - while (++i < n) coordinate = coordinates[i], stream.point(coordinate[0], coordinate[1], coordinate[2]); - stream.lineEnd(); -} + force.strength = function(_) { + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : strength; + }; -function streamPolygon(coordinates, stream) { - var i = -1, n = coordinates.length; - stream.polygonStart(); - while (++i < n) streamLine(coordinates[i], stream, 1); - stream.polygonEnd(); -} + force.radius = function(_) { + return arguments.length ? (radius = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : radius; + }; -function geoStream(object, stream) { - if (object && streamObjectType.hasOwnProperty(object.type)) { - streamObjectType[object.type](object, stream); - } else { - streamGeometry(object, stream); - } + force.x = function(_) { + return arguments.length ? (x = +_, force) : x; + }; + + force.y = function(_) { + return arguments.length ? (y = +_, force) : y; + }; + + return force; } -var areaRingSum = adder(); +function x$1(x) { + var strength = constant$4(0.1), + nodes, + strengths, + xz; -var areaSum = adder(), - lambda00, - phi00, - lambda0, - cosPhi0, - sinPhi0; + if (typeof x !== "function") x = constant$4(x == null ? 0 : +x); -var areaStream = { - point: noop$2, - lineStart: noop$2, - lineEnd: noop$2, - polygonStart: function() { - areaRingSum.reset(); - areaStream.lineStart = areaRingStart; - areaStream.lineEnd = areaRingEnd; - }, - polygonEnd: function() { - var areaRing = +areaRingSum; - areaSum.add(areaRing < 0 ? tau$3 + areaRing : areaRing); - this.lineStart = this.lineEnd = this.point = noop$2; - }, - sphere: function() { - areaSum.add(tau$3); + function force(alpha) { + for (var i = 0, n = nodes.length, node; i < n; ++i) { + node = nodes[i], node.vx += (xz[i] - node.x) * strengths[i] * alpha; + } } -}; - -function areaRingStart() { - areaStream.point = areaPointFirst; -} -function areaRingEnd() { - areaPoint(lambda00, phi00); -} + function initialize() { + if (!nodes) return; + var i, n = nodes.length; + strengths = new Array(n); + xz = new Array(n); + for (i = 0; i < n; ++i) { + strengths[i] = isNaN(xz[i] = +x(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes); + } + } -function areaPointFirst(lambda, phi) { - areaStream.point = areaPoint; - lambda00 = lambda, phi00 = phi; - lambda *= radians, phi *= radians; - lambda0 = lambda, cosPhi0 = cos$1(phi = phi / 2 + quarterPi), sinPhi0 = sin$1(phi); -} + force.initialize = function(_) { + nodes = _; + initialize(); + }; -function areaPoint(lambda, phi) { - lambda *= radians, phi *= radians; - phi = phi / 2 + quarterPi; // half the angular distance from south pole + force.strength = function(_) { + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : strength; + }; - // Spherical excess E for a spherical triangle with vertices: south pole, - // previous point, current point. Uses a formula derived from Cagnoli’s - // theorem. See Todhunter, Spherical Trig. (1871), Sec. 103, Eq. (2). - var dLambda = lambda - lambda0, - sdLambda = dLambda >= 0 ? 1 : -1, - adLambda = sdLambda * dLambda, - cosPhi = cos$1(phi), - sinPhi = sin$1(phi), - k = sinPhi0 * sinPhi, - u = cosPhi0 * cosPhi + k * cos$1(adLambda), - v = k * sdLambda * sin$1(adLambda); - areaRingSum.add(atan2(v, u)); + force.x = function(_) { + return arguments.length ? (x = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : x; + }; - // Advance the previous points. - lambda0 = lambda, cosPhi0 = cosPhi, sinPhi0 = sinPhi; + return force; } -function area$1(object) { - areaSum.reset(); - geoStream(object, areaStream); - return areaSum * 2; -} +function y$1(y) { + var strength = constant$4(0.1), + nodes, + strengths, + yz; -function spherical(cartesian) { - return [atan2(cartesian[1], cartesian[0]), asin(cartesian[2])]; -} + if (typeof y !== "function") y = constant$4(y == null ? 0 : +y); -function cartesian(spherical) { - var lambda = spherical[0], phi = spherical[1], cosPhi = cos$1(phi); - return [cosPhi * cos$1(lambda), cosPhi * sin$1(lambda), sin$1(phi)]; -} + function force(alpha) { + for (var i = 0, n = nodes.length, node; i < n; ++i) { + node = nodes[i], node.vy += (yz[i] - node.y) * strengths[i] * alpha; + } + } -function cartesianDot(a, b) { - return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]; -} + function initialize() { + if (!nodes) return; + var i, n = nodes.length; + strengths = new Array(n); + yz = new Array(n); + for (i = 0; i < n; ++i) { + strengths[i] = isNaN(yz[i] = +y(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes); + } + } -function cartesianCross(a, b) { - return [a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0]]; -} + force.initialize = function(_) { + nodes = _; + initialize(); + }; -// TODO return a -function cartesianAddInPlace(a, b) { - a[0] += b[0], a[1] += b[1], a[2] += b[2]; -} + force.strength = function(_) { + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : strength; + }; -function cartesianScale(vector, k) { - return [vector[0] * k, vector[1] * k, vector[2] * k]; -} + force.y = function(_) { + return arguments.length ? (y = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : y; + }; -// TODO return d -function cartesianNormalizeInPlace(d) { - var l = sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]); - d[0] /= l, d[1] /= l, d[2] /= l; + return force; } -var lambda0$1, phi0, lambda1, phi1, // bounds - lambda2, // previous lambda-coordinate - lambda00$1, phi00$1, // first point - p0, // previous 3D point - deltaSum = adder(), - ranges, - range; - -var boundsStream = { - point: boundsPoint, - lineStart: boundsLineStart, - lineEnd: boundsLineEnd, - polygonStart: function() { - boundsStream.point = boundsRingPoint; - boundsStream.lineStart = boundsRingStart; - boundsStream.lineEnd = boundsRingEnd; - deltaSum.reset(); - areaStream.polygonStart(); - }, - polygonEnd: function() { - areaStream.polygonEnd(); - boundsStream.point = boundsPoint; - boundsStream.lineStart = boundsLineStart; - boundsStream.lineEnd = boundsLineEnd; - if (areaRingSum < 0) lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90); - else if (deltaSum > epsilon$2) phi1 = 90; - else if (deltaSum < -epsilon$2) phi0 = -90; - range[0] = lambda0$1, range[1] = lambda1; - }, - sphere: function() { - lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90); - } -}; - -function boundsPoint(lambda, phi) { - ranges.push(range = [lambda0$1 = lambda, lambda1 = lambda]); - if (phi < phi0) phi0 = phi; - if (phi > phi1) phi1 = phi; +function formatDecimal(x) { + return Math.abs(x = Math.round(x)) >= 1e21 + ? x.toLocaleString("en").replace(/,/g, "") + : x.toString(10); } -function linePoint(lambda, phi) { - var p = cartesian([lambda * radians, phi * radians]); - if (p0) { - var normal = cartesianCross(p0, p), - equatorial = [normal[1], -normal[0], 0], - inflection = cartesianCross(equatorial, normal); - cartesianNormalizeInPlace(inflection); - inflection = spherical(inflection); - var delta = lambda - lambda2, - sign = delta > 0 ? 1 : -1, - lambdai = inflection[0] * degrees$1 * sign, - phii, - antimeridian = abs(delta) > 180; - if (antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) { - phii = inflection[1] * degrees$1; - if (phii > phi1) phi1 = phii; - } else if (lambdai = (lambdai + 360) % 360 - 180, antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) { - phii = -inflection[1] * degrees$1; - if (phii < phi0) phi0 = phii; - } else { - if (phi < phi0) phi0 = phi; - if (phi > phi1) phi1 = phi; - } - if (antimeridian) { - if (lambda < lambda2) { - if (angle(lambda0$1, lambda) > angle(lambda0$1, lambda1)) lambda1 = lambda; - } else { - if (angle(lambda, lambda1) > angle(lambda0$1, lambda1)) lambda0$1 = lambda; - } - } else { - if (lambda1 >= lambda0$1) { - if (lambda < lambda0$1) lambda0$1 = lambda; - if (lambda > lambda1) lambda1 = lambda; - } else { - if (lambda > lambda2) { - if (angle(lambda0$1, lambda) > angle(lambda0$1, lambda1)) lambda1 = lambda; - } else { - if (angle(lambda, lambda1) > angle(lambda0$1, lambda1)) lambda0$1 = lambda; - } - } - } - } else { - ranges.push(range = [lambda0$1 = lambda, lambda1 = lambda]); - } - if (phi < phi0) phi0 = phi; - if (phi > phi1) phi1 = phi; - p0 = p, lambda2 = lambda; -} +// Computes the decimal coefficient and exponent of the specified number x with +// significant digits p, where x is positive and p is in [1, 21] or undefined. +// For example, formatDecimalParts(1.23) returns ["123", 0]. +function formatDecimalParts(x, p) { + if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf("e")) < 0) return null; // NaN, ±Infinity + var i, coefficient = x.slice(0, i); -function boundsLineStart() { - boundsStream.point = linePoint; + // The string returned by toExponential either has the form \d\.\d+e[-+]\d+ + // (e.g., 1.2e+3) or the form \de[-+]\d+ (e.g., 1e+3). + return [ + coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient, + +x.slice(i + 1) + ]; } -function boundsLineEnd() { - range[0] = lambda0$1, range[1] = lambda1; - boundsStream.point = boundsPoint; - p0 = null; +function exponent(x) { + return x = formatDecimalParts(Math.abs(x)), x ? x[1] : NaN; } -function boundsRingPoint(lambda, phi) { - if (p0) { - var delta = lambda - lambda2; - deltaSum.add(abs(delta) > 180 ? delta + (delta > 0 ? 360 : -360) : delta); - } else { - lambda00$1 = lambda, phi00$1 = phi; - } - areaStream.point(lambda, phi); - linePoint(lambda, phi); -} +function formatGroup(grouping, thousands) { + return function(value, width) { + var i = value.length, + t = [], + j = 0, + g = grouping[0], + length = 0; -function boundsRingStart() { - areaStream.lineStart(); -} + while (i > 0 && g > 0) { + if (length + g + 1 > width) g = Math.max(1, width - length); + t.push(value.substring(i -= g, i + g)); + if ((length += g + 1) > width) break; + g = grouping[j = (j + 1) % grouping.length]; + } -function boundsRingEnd() { - boundsRingPoint(lambda00$1, phi00$1); - areaStream.lineEnd(); - if (abs(deltaSum) > epsilon$2) lambda0$1 = -(lambda1 = 180); - range[0] = lambda0$1, range[1] = lambda1; - p0 = null; + return t.reverse().join(thousands); + }; } -// Finds the left-right distance between two longitudes. -// This is almost the same as (lambda1 - lambda0 + 360°) % 360°, except that we want -// the distance between ±180° to be 360°. -function angle(lambda0, lambda1) { - return (lambda1 -= lambda0) < 0 ? lambda1 + 360 : lambda1; +function formatNumerals(numerals) { + return function(value) { + return value.replace(/[0-9]/g, function(i) { + return numerals[+i]; + }); + }; } -function rangeCompare(a, b) { - return a[0] - b[0]; -} +// [[fill]align][sign][symbol][0][width][,][.precision][~][type] +var re = /^(?:(.)?([<>=^]))?([+\-( ])?([$#])?(0)?(\d+)?(,)?(\.\d+)?(~)?([a-z%])?$/i; -function rangeContains(range, x) { - return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x; +function formatSpecifier(specifier) { + if (!(match = re.exec(specifier))) throw new Error("invalid format: " + specifier); + var match; + return new FormatSpecifier({ + fill: match[1], + align: match[2], + sign: match[3], + symbol: match[4], + zero: match[5], + width: match[6], + comma: match[7], + precision: match[8] && match[8].slice(1), + trim: match[9], + type: match[10] + }); } -function bounds(feature) { - var i, n, a, b, merged, deltaMax, delta; +formatSpecifier.prototype = FormatSpecifier.prototype; // instanceof - phi1 = lambda1 = -(lambda0$1 = phi0 = Infinity); - ranges = []; - geoStream(feature, boundsStream); +function FormatSpecifier(specifier) { + this.fill = specifier.fill === undefined ? " " : specifier.fill + ""; + this.align = specifier.align === undefined ? ">" : specifier.align + ""; + this.sign = specifier.sign === undefined ? "-" : specifier.sign + ""; + this.symbol = specifier.symbol === undefined ? "" : specifier.symbol + ""; + this.zero = !!specifier.zero; + this.width = specifier.width === undefined ? undefined : +specifier.width; + this.comma = !!specifier.comma; + this.precision = specifier.precision === undefined ? undefined : +specifier.precision; + this.trim = !!specifier.trim; + this.type = specifier.type === undefined ? "" : specifier.type + ""; +} - // First, sort ranges by their minimum longitudes. - if (n = ranges.length) { - ranges.sort(rangeCompare); - - // Then, merge any ranges that overlap. - for (i = 1, a = ranges[0], merged = [a]; i < n; ++i) { - b = ranges[i]; - if (rangeContains(a, b[0]) || rangeContains(a, b[1])) { - if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1]; - if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0]; - } else { - merged.push(a = b); - } - } +FormatSpecifier.prototype.toString = function() { + return this.fill + + this.align + + this.sign + + this.symbol + + (this.zero ? "0" : "") + + (this.width === undefined ? "" : Math.max(1, this.width | 0)) + + (this.comma ? "," : "") + + (this.precision === undefined ? "" : "." + Math.max(0, this.precision | 0)) + + (this.trim ? "~" : "") + + this.type; +}; - // Finally, find the largest gap between the merged ranges. - // The final bounding box will be the inverse of this gap. - for (deltaMax = -Infinity, n = merged.length - 1, i = 0, a = merged[n]; i <= n; a = b, ++i) { - b = merged[i]; - if ((delta = angle(a[1], b[0])) > deltaMax) deltaMax = delta, lambda0$1 = b[0], lambda1 = a[1]; +// Trims insignificant zeros, e.g., replaces 1.2000k with 1.2k. +function formatTrim(s) { + out: for (var n = s.length, i = 1, i0 = -1, i1; i < n; ++i) { + switch (s[i]) { + case ".": i0 = i1 = i; break; + case "0": if (i0 === 0) i0 = i; i1 = i; break; + default: if (!+s[i]) break out; if (i0 > 0) i0 = 0; break; } } + return i0 > 0 ? s.slice(0, i0) + s.slice(i1 + 1) : s; +} - ranges = range = null; +var prefixExponent; - return lambda0$1 === Infinity || phi0 === Infinity - ? [[NaN, NaN], [NaN, NaN]] - : [[lambda0$1, phi0], [lambda1, phi1]]; +function formatPrefixAuto(x, p) { + var d = formatDecimalParts(x, p); + if (!d) return x + ""; + var coefficient = d[0], + exponent = d[1], + i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1, + n = coefficient.length; + return i === n ? coefficient + : i > n ? coefficient + new Array(i - n + 1).join("0") + : i > 0 ? coefficient.slice(0, i) + "." + coefficient.slice(i) + : "0." + new Array(1 - i).join("0") + formatDecimalParts(x, Math.max(0, p + i - 1))[0]; // less than 1y! } -var W0, W1, - X0, Y0, Z0, - X1, Y1, Z1, - X2, Y2, Z2, - lambda00$2, phi00$2, // first point - x0, y0, z0; // previous point +function formatRounded(x, p) { + var d = formatDecimalParts(x, p); + if (!d) return x + ""; + var coefficient = d[0], + exponent = d[1]; + return exponent < 0 ? "0." + new Array(-exponent).join("0") + coefficient + : coefficient.length > exponent + 1 ? coefficient.slice(0, exponent + 1) + "." + coefficient.slice(exponent + 1) + : coefficient + new Array(exponent - coefficient.length + 2).join("0"); +} -var centroidStream = { - sphere: noop$2, - point: centroidPoint, - lineStart: centroidLineStart, - lineEnd: centroidLineEnd, - polygonStart: function() { - centroidStream.lineStart = centroidRingStart; - centroidStream.lineEnd = centroidRingEnd; - }, - polygonEnd: function() { - centroidStream.lineStart = centroidLineStart; - centroidStream.lineEnd = centroidLineEnd; - } +var formatTypes = { + "%": (x, p) => (x * 100).toFixed(p), + "b": (x) => Math.round(x).toString(2), + "c": (x) => x + "", + "d": formatDecimal, + "e": (x, p) => x.toExponential(p), + "f": (x, p) => x.toFixed(p), + "g": (x, p) => x.toPrecision(p), + "o": (x) => Math.round(x).toString(8), + "p": (x, p) => formatRounded(x * 100, p), + "r": formatRounded, + "s": formatPrefixAuto, + "X": (x) => Math.round(x).toString(16).toUpperCase(), + "x": (x) => Math.round(x).toString(16) }; -// Arithmetic mean of Cartesian vectors. -function centroidPoint(lambda, phi) { - lambda *= radians, phi *= radians; - var cosPhi = cos$1(phi); - centroidPointCartesian(cosPhi * cos$1(lambda), cosPhi * sin$1(lambda), sin$1(phi)); +function identity$6(x) { + return x; } -function centroidPointCartesian(x, y, z) { - ++W0; - X0 += (x - X0) / W0; - Y0 += (y - Y0) / W0; - Z0 += (z - Z0) / W0; -} +var map = Array.prototype.map, + prefixes = ["y","z","a","f","p","n","\xB5","m","","k","M","G","T","P","E","Z","Y"]; -function centroidLineStart() { - centroidStream.point = centroidLinePointFirst; -} +function formatLocale$1(locale) { + var group = locale.grouping === undefined || locale.thousands === undefined ? identity$6 : formatGroup(map.call(locale.grouping, Number), locale.thousands + ""), + currencyPrefix = locale.currency === undefined ? "" : locale.currency[0] + "", + currencySuffix = locale.currency === undefined ? "" : locale.currency[1] + "", + decimal = locale.decimal === undefined ? "." : locale.decimal + "", + numerals = locale.numerals === undefined ? identity$6 : formatNumerals(map.call(locale.numerals, String)), + percent = locale.percent === undefined ? "%" : locale.percent + "", + minus = locale.minus === undefined ? "\u2212" : locale.minus + "", + nan = locale.nan === undefined ? "NaN" : locale.nan + ""; -function centroidLinePointFirst(lambda, phi) { - lambda *= radians, phi *= radians; - var cosPhi = cos$1(phi); - x0 = cosPhi * cos$1(lambda); - y0 = cosPhi * sin$1(lambda); - z0 = sin$1(phi); - centroidStream.point = centroidLinePoint; - centroidPointCartesian(x0, y0, z0); -} + function newFormat(specifier) { + specifier = formatSpecifier(specifier); -function centroidLinePoint(lambda, phi) { - lambda *= radians, phi *= radians; - var cosPhi = cos$1(phi), - x = cosPhi * cos$1(lambda), - y = cosPhi * sin$1(lambda), - z = sin$1(phi), - w = atan2(sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z); - W1 += w; - X1 += w * (x0 + (x0 = x)); - Y1 += w * (y0 + (y0 = y)); - Z1 += w * (z0 + (z0 = z)); - centroidPointCartesian(x0, y0, z0); -} + var fill = specifier.fill, + align = specifier.align, + sign = specifier.sign, + symbol = specifier.symbol, + zero = specifier.zero, + width = specifier.width, + comma = specifier.comma, + precision = specifier.precision, + trim = specifier.trim, + type = specifier.type; -function centroidLineEnd() { - centroidStream.point = centroidPoint; -} + // The "n" type is an alias for ",g". + if (type === "n") comma = true, type = "g"; -// See J. E. Brock, The Inertia Tensor for a Spherical Triangle, -// J. Applied Mechanics 42, 239 (1975). -function centroidRingStart() { - centroidStream.point = centroidRingPointFirst; -} + // The "" type, and any invalid type, is an alias for ".12~g". + else if (!formatTypes[type]) precision === undefined && (precision = 12), trim = true, type = "g"; -function centroidRingEnd() { - centroidRingPoint(lambda00$2, phi00$2); - centroidStream.point = centroidPoint; -} + // If zero fill is specified, padding goes after sign and before digits. + if (zero || (fill === "0" && align === "=")) zero = true, fill = "0", align = "="; -function centroidRingPointFirst(lambda, phi) { - lambda00$2 = lambda, phi00$2 = phi; - lambda *= radians, phi *= radians; - centroidStream.point = centroidRingPoint; - var cosPhi = cos$1(phi); - x0 = cosPhi * cos$1(lambda); - y0 = cosPhi * sin$1(lambda); - z0 = sin$1(phi); - centroidPointCartesian(x0, y0, z0); -} + // Compute the prefix and suffix. + // For SI-prefix, the suffix is lazily computed. + var prefix = symbol === "$" ? currencyPrefix : symbol === "#" && /[boxX]/.test(type) ? "0" + type.toLowerCase() : "", + suffix = symbol === "$" ? currencySuffix : /[%p]/.test(type) ? percent : ""; -function centroidRingPoint(lambda, phi) { - lambda *= radians, phi *= radians; - var cosPhi = cos$1(phi), - x = cosPhi * cos$1(lambda), - y = cosPhi * sin$1(lambda), - z = sin$1(phi), - cx = y0 * z - z0 * y, - cy = z0 * x - x0 * z, - cz = x0 * y - y0 * x, - m = sqrt(cx * cx + cy * cy + cz * cz), - w = asin(m), // line weight = angle - v = m && -w / m; // area weight multiplier - X2 += v * cx; - Y2 += v * cy; - Z2 += v * cz; - W1 += w; - X1 += w * (x0 + (x0 = x)); - Y1 += w * (y0 + (y0 = y)); - Z1 += w * (z0 + (z0 = z)); - centroidPointCartesian(x0, y0, z0); -} + // What format function should we use? + // Is this an integer type? + // Can this type generate exponential notation? + var formatType = formatTypes[type], + maybeSuffix = /[defgprs%]/.test(type); -function centroid(object) { - W0 = W1 = - X0 = Y0 = Z0 = - X1 = Y1 = Z1 = - X2 = Y2 = Z2 = 0; - geoStream(object, centroidStream); + // Set the default precision if not specified, + // or clamp the specified precision to the supported range. + // For significant precision, it must be in [1, 21]. + // For fixed precision, it must be in [0, 20]. + precision = precision === undefined ? 6 + : /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision)) + : Math.max(0, Math.min(20, precision)); - var x = X2, - y = Y2, - z = Z2, - m = x * x + y * y + z * z; + function format(value) { + var valuePrefix = prefix, + valueSuffix = suffix, + i, n, c; - // If the area-weighted ccentroid is undefined, fall back to length-weighted ccentroid. - if (m < epsilon2$1) { - x = X1, y = Y1, z = Z1; - // If the feature has zero length, fall back to arithmetic mean of point vectors. - if (W1 < epsilon$2) x = X0, y = Y0, z = Z0; - m = x * x + y * y + z * z; - // If the feature still has an undefined ccentroid, then return. - if (m < epsilon2$1) return [NaN, NaN]; - } + if (type === "c") { + valueSuffix = formatType(value) + valueSuffix; + value = ""; + } else { + value = +value; - return [atan2(y, x) * degrees$1, asin(z / sqrt(m)) * degrees$1]; -} + // Determine the sign. -0 is not less than 0, but 1 / -0 is! + var valueNegative = value < 0 || 1 / value < 0; -function constant$8(x) { - return function() { - return x; - }; -} + // Perform the initial formatting. + value = isNaN(value) ? nan : formatType(Math.abs(value), precision); -function compose(a, b) { + // Trim insignificant zeros. + if (trim) value = formatTrim(value); - function compose(x, y) { - return x = a(x, y), b(x[0], x[1]); - } + // If a negative value rounds to zero after formatting, and no explicit positive sign is requested, hide the sign. + if (valueNegative && +value === 0 && sign !== "+") valueNegative = false; - if (a.invert && b.invert) compose.invert = function(x, y) { - return x = b.invert(x, y), x && a.invert(x[0], x[1]); - }; + // Compute the prefix and suffix. + valuePrefix = (valueNegative ? (sign === "(" ? sign : minus) : sign === "-" || sign === "(" ? "" : sign) + valuePrefix; + valueSuffix = (type === "s" ? prefixes[8 + prefixExponent / 3] : "") + valueSuffix + (valueNegative && sign === "(" ? ")" : ""); - return compose; -} + // Break the formatted value into the integer “value” part that can be + // grouped, and fractional or exponential “suffix” part that is not. + if (maybeSuffix) { + i = -1, n = value.length; + while (++i < n) { + if (c = value.charCodeAt(i), 48 > c || c > 57) { + valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix; + value = value.slice(0, i); + break; + } + } + } + } -function rotationIdentity(lambda, phi) { - return [abs(lambda) > pi$3 ? lambda + Math.round(-lambda / tau$3) * tau$3 : lambda, phi]; -} + // If the fill character is not "0", grouping is applied before padding. + if (comma && !zero) value = group(value, Infinity); -rotationIdentity.invert = rotationIdentity; + // Compute the padding. + var length = valuePrefix.length + value.length + valueSuffix.length, + padding = length < width ? new Array(width - length + 1).join(fill) : ""; -function rotateRadians(deltaLambda, deltaPhi, deltaGamma) { - return (deltaLambda %= tau$3) ? (deltaPhi || deltaGamma ? compose(rotationLambda(deltaLambda), rotationPhiGamma(deltaPhi, deltaGamma)) - : rotationLambda(deltaLambda)) - : (deltaPhi || deltaGamma ? rotationPhiGamma(deltaPhi, deltaGamma) - : rotationIdentity); -} + // If the fill character is "0", grouping is applied after padding. + if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = ""; -function forwardRotationLambda(deltaLambda) { - return function(lambda, phi) { - return lambda += deltaLambda, [lambda > pi$3 ? lambda - tau$3 : lambda < -pi$3 ? lambda + tau$3 : lambda, phi]; - }; -} + // Reconstruct the final output based on the desired alignment. + switch (align) { + case "<": value = valuePrefix + value + valueSuffix + padding; break; + case "=": value = valuePrefix + padding + value + valueSuffix; break; + case "^": value = padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length); break; + default: value = padding + valuePrefix + value + valueSuffix; break; + } -function rotationLambda(deltaLambda) { - var rotation = forwardRotationLambda(deltaLambda); - rotation.invert = forwardRotationLambda(-deltaLambda); - return rotation; -} + return numerals(value); + } -function rotationPhiGamma(deltaPhi, deltaGamma) { - var cosDeltaPhi = cos$1(deltaPhi), - sinDeltaPhi = sin$1(deltaPhi), - cosDeltaGamma = cos$1(deltaGamma), - sinDeltaGamma = sin$1(deltaGamma); + format.toString = function() { + return specifier + ""; + }; - function rotation(lambda, phi) { - var cosPhi = cos$1(phi), - x = cos$1(lambda) * cosPhi, - y = sin$1(lambda) * cosPhi, - z = sin$1(phi), - k = z * cosDeltaPhi + x * sinDeltaPhi; - return [ - atan2(y * cosDeltaGamma - k * sinDeltaGamma, x * cosDeltaPhi - z * sinDeltaPhi), - asin(k * cosDeltaGamma + y * sinDeltaGamma) - ]; + return format; } - rotation.invert = function(lambda, phi) { - var cosPhi = cos$1(phi), - x = cos$1(lambda) * cosPhi, - y = sin$1(lambda) * cosPhi, - z = sin$1(phi), - k = z * cosDeltaGamma - y * sinDeltaGamma; - return [ - atan2(y * cosDeltaGamma + z * sinDeltaGamma, x * cosDeltaPhi + k * sinDeltaPhi), - asin(k * cosDeltaPhi - x * sinDeltaPhi) - ]; - }; + function formatPrefix(specifier, value) { + var f = newFormat((specifier = formatSpecifier(specifier), specifier.type = "f", specifier)), + e = Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3, + k = Math.pow(10, -e), + prefix = prefixes[8 + e / 3]; + return function(value) { + return f(k * value) + prefix; + }; + } - return rotation; + return { + format: newFormat, + formatPrefix: formatPrefix + }; } -function rotation(rotate) { - rotate = rotateRadians(rotate[0] * radians, rotate[1] * radians, rotate.length > 2 ? rotate[2] * radians : 0); - - function forward(coordinates) { - coordinates = rotate(coordinates[0] * radians, coordinates[1] * radians); - return coordinates[0] *= degrees$1, coordinates[1] *= degrees$1, coordinates; - } +var locale$1; +exports.format = void 0; +exports.formatPrefix = void 0; - forward.invert = function(coordinates) { - coordinates = rotate.invert(coordinates[0] * radians, coordinates[1] * radians); - return coordinates[0] *= degrees$1, coordinates[1] *= degrees$1, coordinates; - }; +defaultLocale$1({ + thousands: ",", + grouping: [3], + currency: ["$", ""] +}); - return forward; +function defaultLocale$1(definition) { + locale$1 = formatLocale$1(definition); + exports.format = locale$1.format; + exports.formatPrefix = locale$1.formatPrefix; + return locale$1; } -// Generates a circle centered at [0°, 0°], with a given radius and precision. -function circleStream(stream, radius, delta, direction, t0, t1) { - if (!delta) return; - var cosRadius = cos$1(radius), - sinRadius = sin$1(radius), - step = direction * delta; - if (t0 == null) { - t0 = radius + direction * tau$3; - t1 = radius - step / 2; - } else { - t0 = circleRadius(cosRadius, t0); - t1 = circleRadius(cosRadius, t1); - if (direction > 0 ? t0 < t1 : t0 > t1) t0 += direction * tau$3; - } - for (var point, t = t0; direction > 0 ? t > t1 : t < t1; t -= step) { - point = spherical([cosRadius, -sinRadius * cos$1(t), -sinRadius * sin$1(t)]); - stream.point(point[0], point[1]); - } +function precisionFixed(step) { + return Math.max(0, -exponent(Math.abs(step))); } -// Returns the signed angle of a cartesian point relative to [cosRadius, 0, 0]. -function circleRadius(cosRadius, point) { - point = cartesian(point), point[0] -= cosRadius; - cartesianNormalizeInPlace(point); - var radius = acos(-point[1]); - return ((-point[2] < 0 ? -radius : radius) + tau$3 - epsilon$2) % tau$3; +function precisionPrefix(step, value) { + return Math.max(0, Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3 - exponent(Math.abs(step))); } -function circle() { - var center = constant$8([0, 0]), - radius = constant$8(90), - precision = constant$8(6), - ring, - rotate, - stream = {point: point}; - - function point(x, y) { - ring.push(x = rotate(x, y)); - x[0] *= degrees$1, x[1] *= degrees$1; - } - - function circle() { - var c = center.apply(this, arguments), - r = radius.apply(this, arguments) * radians, - p = precision.apply(this, arguments) * radians; - ring = []; - rotate = rotateRadians(-c[0] * radians, -c[1] * radians, 0).invert; - circleStream(stream, r, p, 1); - c = {type: "Polygon", coordinates: [ring]}; - ring = rotate = null; - return c; - } +function precisionRound(step, max) { + step = Math.abs(step), max = Math.abs(max) - step; + return Math.max(0, exponent(max) - exponent(step)) + 1; +} - circle.center = function(_) { - return arguments.length ? (center = typeof _ === "function" ? _ : constant$8([+_[0], +_[1]]), circle) : center; - }; +var epsilon$1 = 1e-6; +var epsilon2 = 1e-12; +var pi$1 = Math.PI; +var halfPi$1 = pi$1 / 2; +var quarterPi = pi$1 / 4; +var tau$1 = pi$1 * 2; - circle.radius = function(_) { - return arguments.length ? (radius = typeof _ === "function" ? _ : constant$8(+_), circle) : radius; - }; +var degrees = 180 / pi$1; +var radians = pi$1 / 180; - circle.precision = function(_) { - return arguments.length ? (precision = typeof _ === "function" ? _ : constant$8(+_), circle) : precision; - }; +var abs$1 = Math.abs; +var atan = Math.atan; +var atan2$1 = Math.atan2; +var cos$1 = Math.cos; +var ceil = Math.ceil; +var exp = Math.exp; +var hypot = Math.hypot; +var log$1 = Math.log; +var pow$1 = Math.pow; +var sin$1 = Math.sin; +var sign$1 = Math.sign || function(x) { return x > 0 ? 1 : x < 0 ? -1 : 0; }; +var sqrt$2 = Math.sqrt; +var tan = Math.tan; - return circle; +function acos$1(x) { + return x > 1 ? 0 : x < -1 ? pi$1 : Math.acos(x); } -function clipBuffer() { - var lines = [], - line; - return { - point: function(x, y) { - line.push([x, y]); - }, - lineStart: function() { - lines.push(line = []); - }, - lineEnd: noop$2, - rejoin: function() { - if (lines.length > 1) lines.push(lines.pop().concat(lines.shift())); - }, - result: function() { - var result = lines; - lines = []; - line = null; - return result; - } - }; +function asin$1(x) { + return x > 1 ? halfPi$1 : x < -1 ? -halfPi$1 : Math.asin(x); } -function pointEqual(a, b) { - return abs(a[0] - b[0]) < epsilon$2 && abs(a[1] - b[1]) < epsilon$2; +function haversin(x) { + return (x = sin$1(x / 2)) * x; } -function Intersection(point, points, other, entry) { - this.x = point; - this.z = points; - this.o = other; // another intersection - this.e = entry; // is an entry? - this.v = false; // visited - this.n = this.p = null; // next & previous +function noop$1() {} + +function streamGeometry(geometry, stream) { + if (geometry && streamGeometryType.hasOwnProperty(geometry.type)) { + streamGeometryType[geometry.type](geometry, stream); + } } -// A generalized polygon clipping algorithm: given a polygon that has been cut -// into its visible line segments, and rejoins the segments by interpolating -// along the clip edge. -function clipRejoin(segments, compareIntersection, startInside, interpolate, stream) { - var subject = [], - clip = [], - i, - n; +var streamObjectType = { + Feature: function(object, stream) { + streamGeometry(object.geometry, stream); + }, + FeatureCollection: function(object, stream) { + var features = object.features, i = -1, n = features.length; + while (++i < n) streamGeometry(features[i].geometry, stream); + } +}; - segments.forEach(function(segment) { - if ((n = segment.length - 1) <= 0) return; - var n, p0 = segment[0], p1 = segment[n], x; +var streamGeometryType = { + Sphere: function(object, stream) { + stream.sphere(); + }, + Point: function(object, stream) { + object = object.coordinates; + stream.point(object[0], object[1], object[2]); + }, + MultiPoint: function(object, stream) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) object = coordinates[i], stream.point(object[0], object[1], object[2]); + }, + LineString: function(object, stream) { + streamLine(object.coordinates, stream, 0); + }, + MultiLineString: function(object, stream) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) streamLine(coordinates[i], stream, 0); + }, + Polygon: function(object, stream) { + streamPolygon(object.coordinates, stream); + }, + MultiPolygon: function(object, stream) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) streamPolygon(coordinates[i], stream); + }, + GeometryCollection: function(object, stream) { + var geometries = object.geometries, i = -1, n = geometries.length; + while (++i < n) streamGeometry(geometries[i], stream); + } +}; - // If the first and last points of a segment are coincident, then treat as a - // closed ring. TODO if all rings are closed, then the winding order of the - // exterior ring should be checked. - if (pointEqual(p0, p1)) { - stream.lineStart(); - for (i = 0; i < n; ++i) stream.point((p0 = segment[i])[0], p0[1]); - stream.lineEnd(); - return; - } +function streamLine(coordinates, stream, closed) { + var i = -1, n = coordinates.length - closed, coordinate; + stream.lineStart(); + while (++i < n) coordinate = coordinates[i], stream.point(coordinate[0], coordinate[1], coordinate[2]); + stream.lineEnd(); +} - subject.push(x = new Intersection(p0, segment, null, true)); - clip.push(x.o = new Intersection(p0, null, x, false)); - subject.push(x = new Intersection(p1, segment, null, false)); - clip.push(x.o = new Intersection(p1, null, x, true)); - }); +function streamPolygon(coordinates, stream) { + var i = -1, n = coordinates.length; + stream.polygonStart(); + while (++i < n) streamLine(coordinates[i], stream, 1); + stream.polygonEnd(); +} - if (!subject.length) return; +function geoStream(object, stream) { + if (object && streamObjectType.hasOwnProperty(object.type)) { + streamObjectType[object.type](object, stream); + } else { + streamGeometry(object, stream); + } +} - clip.sort(compareIntersection); - link$1(subject); - link$1(clip); +var areaRingSum$1 = new Adder(); - for (i = 0, n = clip.length; i < n; ++i) { - clip[i].e = startInside = !startInside; +// hello? + +var areaSum$1 = new Adder(), + lambda00$2, + phi00$2, + lambda0$2, + cosPhi0$1, + sinPhi0$1; + +var areaStream$1 = { + point: noop$1, + lineStart: noop$1, + lineEnd: noop$1, + polygonStart: function() { + areaRingSum$1 = new Adder(); + areaStream$1.lineStart = areaRingStart$1; + areaStream$1.lineEnd = areaRingEnd$1; + }, + polygonEnd: function() { + var areaRing = +areaRingSum$1; + areaSum$1.add(areaRing < 0 ? tau$1 + areaRing : areaRing); + this.lineStart = this.lineEnd = this.point = noop$1; + }, + sphere: function() { + areaSum$1.add(tau$1); } +}; - var start = subject[0], - points, - point; +function areaRingStart$1() { + areaStream$1.point = areaPointFirst$1; +} - while (1) { - // Find first unvisited intersection. - var current = start, - isSubject = true; - while (current.v) if ((current = current.n) === start) return; - points = current.z; - stream.lineStart(); - do { - current.v = current.o.v = true; - if (current.e) { - if (isSubject) { - for (i = 0, n = points.length; i < n; ++i) stream.point((point = points[i])[0], point[1]); - } else { - interpolate(current.x, current.n.x, 1, stream); - } - current = current.n; +function areaRingEnd$1() { + areaPoint$1(lambda00$2, phi00$2); +} + +function areaPointFirst$1(lambda, phi) { + areaStream$1.point = areaPoint$1; + lambda00$2 = lambda, phi00$2 = phi; + lambda *= radians, phi *= radians; + lambda0$2 = lambda, cosPhi0$1 = cos$1(phi = phi / 2 + quarterPi), sinPhi0$1 = sin$1(phi); +} + +function areaPoint$1(lambda, phi) { + lambda *= radians, phi *= radians; + phi = phi / 2 + quarterPi; // half the angular distance from south pole + + // Spherical excess E for a spherical triangle with vertices: south pole, + // previous point, current point. Uses a formula derived from Cagnoli’s + // theorem. See Todhunter, Spherical Trig. (1871), Sec. 103, Eq. (2). + var dLambda = lambda - lambda0$2, + sdLambda = dLambda >= 0 ? 1 : -1, + adLambda = sdLambda * dLambda, + cosPhi = cos$1(phi), + sinPhi = sin$1(phi), + k = sinPhi0$1 * sinPhi, + u = cosPhi0$1 * cosPhi + k * cos$1(adLambda), + v = k * sdLambda * sin$1(adLambda); + areaRingSum$1.add(atan2$1(v, u)); + + // Advance the previous points. + lambda0$2 = lambda, cosPhi0$1 = cosPhi, sinPhi0$1 = sinPhi; +} + +function area$2(object) { + areaSum$1 = new Adder(); + geoStream(object, areaStream$1); + return areaSum$1 * 2; +} + +function spherical(cartesian) { + return [atan2$1(cartesian[1], cartesian[0]), asin$1(cartesian[2])]; +} + +function cartesian(spherical) { + var lambda = spherical[0], phi = spherical[1], cosPhi = cos$1(phi); + return [cosPhi * cos$1(lambda), cosPhi * sin$1(lambda), sin$1(phi)]; +} + +function cartesianDot(a, b) { + return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]; +} + +function cartesianCross(a, b) { + return [a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0]]; +} + +// TODO return a +function cartesianAddInPlace(a, b) { + a[0] += b[0], a[1] += b[1], a[2] += b[2]; +} + +function cartesianScale(vector, k) { + return [vector[0] * k, vector[1] * k, vector[2] * k]; +} + +// TODO return d +function cartesianNormalizeInPlace(d) { + var l = sqrt$2(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]); + d[0] /= l, d[1] /= l, d[2] /= l; +} + +var lambda0$1, phi0, lambda1, phi1, // bounds + lambda2, // previous lambda-coordinate + lambda00$1, phi00$1, // first point + p0, // previous 3D point + deltaSum, + ranges, + range; + +var boundsStream$1 = { + point: boundsPoint$1, + lineStart: boundsLineStart, + lineEnd: boundsLineEnd, + polygonStart: function() { + boundsStream$1.point = boundsRingPoint; + boundsStream$1.lineStart = boundsRingStart; + boundsStream$1.lineEnd = boundsRingEnd; + deltaSum = new Adder(); + areaStream$1.polygonStart(); + }, + polygonEnd: function() { + areaStream$1.polygonEnd(); + boundsStream$1.point = boundsPoint$1; + boundsStream$1.lineStart = boundsLineStart; + boundsStream$1.lineEnd = boundsLineEnd; + if (areaRingSum$1 < 0) lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90); + else if (deltaSum > epsilon$1) phi1 = 90; + else if (deltaSum < -epsilon$1) phi0 = -90; + range[0] = lambda0$1, range[1] = lambda1; + }, + sphere: function() { + lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90); + } +}; + +function boundsPoint$1(lambda, phi) { + ranges.push(range = [lambda0$1 = lambda, lambda1 = lambda]); + if (phi < phi0) phi0 = phi; + if (phi > phi1) phi1 = phi; +} + +function linePoint(lambda, phi) { + var p = cartesian([lambda * radians, phi * radians]); + if (p0) { + var normal = cartesianCross(p0, p), + equatorial = [normal[1], -normal[0], 0], + inflection = cartesianCross(equatorial, normal); + cartesianNormalizeInPlace(inflection); + inflection = spherical(inflection); + var delta = lambda - lambda2, + sign = delta > 0 ? 1 : -1, + lambdai = inflection[0] * degrees * sign, + phii, + antimeridian = abs$1(delta) > 180; + if (antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) { + phii = inflection[1] * degrees; + if (phii > phi1) phi1 = phii; + } else if (lambdai = (lambdai + 360) % 360 - 180, antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) { + phii = -inflection[1] * degrees; + if (phii < phi0) phi0 = phii; + } else { + if (phi < phi0) phi0 = phi; + if (phi > phi1) phi1 = phi; + } + if (antimeridian) { + if (lambda < lambda2) { + if (angle(lambda0$1, lambda) > angle(lambda0$1, lambda1)) lambda1 = lambda; } else { - if (isSubject) { - points = current.p.z; - for (i = points.length - 1; i >= 0; --i) stream.point((point = points[i])[0], point[1]); + if (angle(lambda, lambda1) > angle(lambda0$1, lambda1)) lambda0$1 = lambda; + } + } else { + if (lambda1 >= lambda0$1) { + if (lambda < lambda0$1) lambda0$1 = lambda; + if (lambda > lambda1) lambda1 = lambda; + } else { + if (lambda > lambda2) { + if (angle(lambda0$1, lambda) > angle(lambda0$1, lambda1)) lambda1 = lambda; } else { - interpolate(current.x, current.p.x, -1, stream); + if (angle(lambda, lambda1) > angle(lambda0$1, lambda1)) lambda0$1 = lambda; } - current = current.p; } - current = current.o; - points = current.z; - isSubject = !isSubject; - } while (!current.v); - stream.lineEnd(); + } + } else { + ranges.push(range = [lambda0$1 = lambda, lambda1 = lambda]); } + if (phi < phi0) phi0 = phi; + if (phi > phi1) phi1 = phi; + p0 = p, lambda2 = lambda; } -function link$1(array) { - if (!(n = array.length)) return; - var n, - i = 0, - a = array[0], - b; - while (++i < n) { - a.n = b = array[i]; - b.p = a; - a = b; +function boundsLineStart() { + boundsStream$1.point = linePoint; +} + +function boundsLineEnd() { + range[0] = lambda0$1, range[1] = lambda1; + boundsStream$1.point = boundsPoint$1; + p0 = null; +} + +function boundsRingPoint(lambda, phi) { + if (p0) { + var delta = lambda - lambda2; + deltaSum.add(abs$1(delta) > 180 ? delta + (delta > 0 ? 360 : -360) : delta); + } else { + lambda00$1 = lambda, phi00$1 = phi; } - a.n = b = array[0]; - b.p = a; + areaStream$1.point(lambda, phi); + linePoint(lambda, phi); } -var sum$1 = adder(); +function boundsRingStart() { + areaStream$1.lineStart(); +} -function longitude(point) { - if (abs(point[0]) <= pi$3) - return point[0]; - else - return sign(point[0]) * ((abs(point[0]) + pi$3) % tau$3 - pi$3); +function boundsRingEnd() { + boundsRingPoint(lambda00$1, phi00$1); + areaStream$1.lineEnd(); + if (abs$1(deltaSum) > epsilon$1) lambda0$1 = -(lambda1 = 180); + range[0] = lambda0$1, range[1] = lambda1; + p0 = null; } -function polygonContains(polygon, point) { - var lambda = longitude(point), - phi = point[1], - sinPhi = sin$1(phi), - normal = [sin$1(lambda), -cos$1(lambda), 0], - angle = 0, - winding = 0; +// Finds the left-right distance between two longitudes. +// This is almost the same as (lambda1 - lambda0 + 360°) % 360°, except that we want +// the distance between ±180° to be 360°. +function angle(lambda0, lambda1) { + return (lambda1 -= lambda0) < 0 ? lambda1 + 360 : lambda1; +} - sum$1.reset(); +function rangeCompare(a, b) { + return a[0] - b[0]; +} - if (sinPhi === 1) phi = halfPi$2 + epsilon$2; - else if (sinPhi === -1) phi = -halfPi$2 - epsilon$2; +function rangeContains(range, x) { + return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x; +} - for (var i = 0, n = polygon.length; i < n; ++i) { - if (!(m = (ring = polygon[i]).length)) continue; - var ring, - m, - point0 = ring[m - 1], - lambda0 = longitude(point0), - phi0 = point0[1] / 2 + quarterPi, - sinPhi0 = sin$1(phi0), - cosPhi0 = cos$1(phi0); +function bounds(feature) { + var i, n, a, b, merged, deltaMax, delta; - for (var j = 0; j < m; ++j, lambda0 = lambda1, sinPhi0 = sinPhi1, cosPhi0 = cosPhi1, point0 = point1) { - var point1 = ring[j], - lambda1 = longitude(point1), - phi1 = point1[1] / 2 + quarterPi, - sinPhi1 = sin$1(phi1), - cosPhi1 = cos$1(phi1), - delta = lambda1 - lambda0, - sign = delta >= 0 ? 1 : -1, - absDelta = sign * delta, - antimeridian = absDelta > pi$3, - k = sinPhi0 * sinPhi1; + phi1 = lambda1 = -(lambda0$1 = phi0 = Infinity); + ranges = []; + geoStream(feature, boundsStream$1); - sum$1.add(atan2(k * sign * sin$1(absDelta), cosPhi0 * cosPhi1 + k * cos$1(absDelta))); - angle += antimeridian ? delta + sign * tau$3 : delta; + // First, sort ranges by their minimum longitudes. + if (n = ranges.length) { + ranges.sort(rangeCompare); - // Are the longitudes either side of the point’s meridian (lambda), - // and are the latitudes smaller than the parallel (phi)? - if (antimeridian ^ lambda0 >= lambda ^ lambda1 >= lambda) { - var arc = cartesianCross(cartesian(point0), cartesian(point1)); - cartesianNormalizeInPlace(arc); - var intersection = cartesianCross(normal, arc); - cartesianNormalizeInPlace(intersection); - var phiArc = (antimeridian ^ delta >= 0 ? -1 : 1) * asin(intersection[2]); - if (phi > phiArc || phi === phiArc && (arc[0] || arc[1])) { - winding += antimeridian ^ delta >= 0 ? 1 : -1; - } + // Then, merge any ranges that overlap. + for (i = 1, a = ranges[0], merged = [a]; i < n; ++i) { + b = ranges[i]; + if (rangeContains(a, b[0]) || rangeContains(a, b[1])) { + if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1]; + if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0]; + } else { + merged.push(a = b); } } + + // Finally, find the largest gap between the merged ranges. + // The final bounding box will be the inverse of this gap. + for (deltaMax = -Infinity, n = merged.length - 1, i = 0, a = merged[n]; i <= n; a = b, ++i) { + b = merged[i]; + if ((delta = angle(a[1], b[0])) > deltaMax) deltaMax = delta, lambda0$1 = b[0], lambda1 = a[1]; + } } - // First, determine whether the South pole is inside or outside: - // - // It is inside if: - // * the polygon winds around it in a clockwise direction. - // * the polygon does not (cumulatively) wind around it, but has a negative - // (counter-clockwise) area. - // - // Second, count the (signed) number of times a segment crosses a lambda - // from the point to the South pole. If it is zero, then the point is the - // same side as the South pole. + ranges = range = null; - return (angle < -epsilon$2 || angle < epsilon$2 && sum$1 < -epsilon$2) ^ (winding & 1); + return lambda0$1 === Infinity || phi0 === Infinity + ? [[NaN, NaN], [NaN, NaN]] + : [[lambda0$1, phi0], [lambda1, phi1]]; } -function clip(pointVisible, clipLine, interpolate, start) { - return function(sink) { - var line = clipLine(sink), - ringBuffer = clipBuffer(), - ringSink = clipLine(ringBuffer), - polygonStarted = false, - polygon, - segments, - ring; +var W0, W1, + X0$1, Y0$1, Z0$1, + X1$1, Y1$1, Z1$1, + X2$1, Y2$1, Z2$1, + lambda00, phi00, // first point + x0$4, y0$4, z0; // previous point - var clip = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, - polygonStart: function() { - clip.point = pointRing; - clip.lineStart = ringStart; - clip.lineEnd = ringEnd; - segments = []; - polygon = []; - }, - polygonEnd: function() { - clip.point = point; - clip.lineStart = lineStart; - clip.lineEnd = lineEnd; - segments = merge(segments); - var startInside = polygonContains(polygon, start); - if (segments.length) { - if (!polygonStarted) sink.polygonStart(), polygonStarted = true; - clipRejoin(segments, compareIntersection, startInside, interpolate, sink); - } else if (startInside) { - if (!polygonStarted) sink.polygonStart(), polygonStarted = true; - sink.lineStart(); - interpolate(null, null, 1, sink); - sink.lineEnd(); - } - if (polygonStarted) sink.polygonEnd(), polygonStarted = false; - segments = polygon = null; - }, - sphere: function() { - sink.polygonStart(); - sink.lineStart(); - interpolate(null, null, 1, sink); - sink.lineEnd(); - sink.polygonEnd(); - } - }; +var centroidStream$1 = { + sphere: noop$1, + point: centroidPoint$1, + lineStart: centroidLineStart$1, + lineEnd: centroidLineEnd$1, + polygonStart: function() { + centroidStream$1.lineStart = centroidRingStart$1; + centroidStream$1.lineEnd = centroidRingEnd$1; + }, + polygonEnd: function() { + centroidStream$1.lineStart = centroidLineStart$1; + centroidStream$1.lineEnd = centroidLineEnd$1; + } +}; - function point(lambda, phi) { - if (pointVisible(lambda, phi)) sink.point(lambda, phi); - } +// Arithmetic mean of Cartesian vectors. +function centroidPoint$1(lambda, phi) { + lambda *= radians, phi *= radians; + var cosPhi = cos$1(phi); + centroidPointCartesian(cosPhi * cos$1(lambda), cosPhi * sin$1(lambda), sin$1(phi)); +} - function pointLine(lambda, phi) { - line.point(lambda, phi); - } +function centroidPointCartesian(x, y, z) { + ++W0; + X0$1 += (x - X0$1) / W0; + Y0$1 += (y - Y0$1) / W0; + Z0$1 += (z - Z0$1) / W0; +} - function lineStart() { - clip.point = pointLine; - line.lineStart(); - } +function centroidLineStart$1() { + centroidStream$1.point = centroidLinePointFirst; +} - function lineEnd() { - clip.point = point; - line.lineEnd(); - } +function centroidLinePointFirst(lambda, phi) { + lambda *= radians, phi *= radians; + var cosPhi = cos$1(phi); + x0$4 = cosPhi * cos$1(lambda); + y0$4 = cosPhi * sin$1(lambda); + z0 = sin$1(phi); + centroidStream$1.point = centroidLinePoint; + centroidPointCartesian(x0$4, y0$4, z0); +} - function pointRing(lambda, phi) { - ring.push([lambda, phi]); - ringSink.point(lambda, phi); - } +function centroidLinePoint(lambda, phi) { + lambda *= radians, phi *= radians; + var cosPhi = cos$1(phi), + x = cosPhi * cos$1(lambda), + y = cosPhi * sin$1(lambda), + z = sin$1(phi), + w = atan2$1(sqrt$2((w = y0$4 * z - z0 * y) * w + (w = z0 * x - x0$4 * z) * w + (w = x0$4 * y - y0$4 * x) * w), x0$4 * x + y0$4 * y + z0 * z); + W1 += w; + X1$1 += w * (x0$4 + (x0$4 = x)); + Y1$1 += w * (y0$4 + (y0$4 = y)); + Z1$1 += w * (z0 + (z0 = z)); + centroidPointCartesian(x0$4, y0$4, z0); +} - function ringStart() { - ringSink.lineStart(); - ring = []; - } +function centroidLineEnd$1() { + centroidStream$1.point = centroidPoint$1; +} - function ringEnd() { - pointRing(ring[0][0], ring[0][1]); - ringSink.lineEnd(); +// See J. E. Brock, The Inertia Tensor for a Spherical Triangle, +// J. Applied Mechanics 42, 239 (1975). +function centroidRingStart$1() { + centroidStream$1.point = centroidRingPointFirst; +} - var clean = ringSink.clean(), - ringSegments = ringBuffer.result(), - i, n = ringSegments.length, m, - segment, - point; +function centroidRingEnd$1() { + centroidRingPoint(lambda00, phi00); + centroidStream$1.point = centroidPoint$1; +} - ring.pop(); - polygon.push(ring); - ring = null; +function centroidRingPointFirst(lambda, phi) { + lambda00 = lambda, phi00 = phi; + lambda *= radians, phi *= radians; + centroidStream$1.point = centroidRingPoint; + var cosPhi = cos$1(phi); + x0$4 = cosPhi * cos$1(lambda); + y0$4 = cosPhi * sin$1(lambda); + z0 = sin$1(phi); + centroidPointCartesian(x0$4, y0$4, z0); +} - if (!n) return; +function centroidRingPoint(lambda, phi) { + lambda *= radians, phi *= radians; + var cosPhi = cos$1(phi), + x = cosPhi * cos$1(lambda), + y = cosPhi * sin$1(lambda), + z = sin$1(phi), + cx = y0$4 * z - z0 * y, + cy = z0 * x - x0$4 * z, + cz = x0$4 * y - y0$4 * x, + m = hypot(cx, cy, cz), + w = asin$1(m), // line weight = angle + v = m && -w / m; // area weight multiplier + X2$1.add(v * cx); + Y2$1.add(v * cy); + Z2$1.add(v * cz); + W1 += w; + X1$1 += w * (x0$4 + (x0$4 = x)); + Y1$1 += w * (y0$4 + (y0$4 = y)); + Z1$1 += w * (z0 + (z0 = z)); + centroidPointCartesian(x0$4, y0$4, z0); +} - // No intersections. - if (clean & 1) { - segment = ringSegments[0]; - if ((m = segment.length - 1) > 0) { - if (!polygonStarted) sink.polygonStart(), polygonStarted = true; - sink.lineStart(); - for (i = 0; i < m; ++i) sink.point((point = segment[i])[0], point[1]); - sink.lineEnd(); - } - return; - } +function centroid$1(object) { + W0 = W1 = + X0$1 = Y0$1 = Z0$1 = + X1$1 = Y1$1 = Z1$1 = 0; + X2$1 = new Adder(); + Y2$1 = new Adder(); + Z2$1 = new Adder(); + geoStream(object, centroidStream$1); + + var x = +X2$1, + y = +Y2$1, + z = +Z2$1, + m = hypot(x, y, z); - // Rejoin connected segments. - // TODO reuse ringBuffer.rejoin()? - if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift())); + // If the area-weighted ccentroid is undefined, fall back to length-weighted ccentroid. + if (m < epsilon2) { + x = X1$1, y = Y1$1, z = Z1$1; + // If the feature has zero length, fall back to arithmetic mean of point vectors. + if (W1 < epsilon$1) x = X0$1, y = Y0$1, z = Z0$1; + m = hypot(x, y, z); + // If the feature still has an undefined ccentroid, then return. + if (m < epsilon2) return [NaN, NaN]; + } - segments.push(ringSegments.filter(validSegment)); - } + return [atan2$1(y, x) * degrees, asin$1(z / m) * degrees]; +} - return clip; +function constant$3(x) { + return function() { + return x; }; } -function validSegment(segment) { - return segment.length > 1; +function compose(a, b) { + + function compose(x, y) { + return x = a(x, y), b(x[0], x[1]); + } + + if (a.invert && b.invert) compose.invert = function(x, y) { + return x = b.invert(x, y), x && a.invert(x[0], x[1]); + }; + + return compose; } -// Intersections are sorted along the clip edge. For both antimeridian cutting -// and circle clipping, the same comparison is used. -function compareIntersection(a, b) { - return ((a = a.x)[0] < 0 ? a[1] - halfPi$2 - epsilon$2 : halfPi$2 - a[1]) - - ((b = b.x)[0] < 0 ? b[1] - halfPi$2 - epsilon$2 : halfPi$2 - b[1]); +function rotationIdentity(lambda, phi) { + return [abs$1(lambda) > pi$1 ? lambda + Math.round(-lambda / tau$1) * tau$1 : lambda, phi]; } -var clipAntimeridian = clip( - function() { return true; }, - clipAntimeridianLine, - clipAntimeridianInterpolate, - [-pi$3, -halfPi$2] -); +rotationIdentity.invert = rotationIdentity; -// Takes a line and cuts into visible segments. Return values: 0 - there were -// intersections or the line was empty; 1 - no intersections; 2 - there were -// intersections, and the first and last segments should be rejoined. -function clipAntimeridianLine(stream) { - var lambda0 = NaN, - phi0 = NaN, - sign0 = NaN, - clean; // no intersections +function rotateRadians(deltaLambda, deltaPhi, deltaGamma) { + return (deltaLambda %= tau$1) ? (deltaPhi || deltaGamma ? compose(rotationLambda(deltaLambda), rotationPhiGamma(deltaPhi, deltaGamma)) + : rotationLambda(deltaLambda)) + : (deltaPhi || deltaGamma ? rotationPhiGamma(deltaPhi, deltaGamma) + : rotationIdentity); +} - return { - lineStart: function() { - stream.lineStart(); - clean = 1; - }, - point: function(lambda1, phi1) { - var sign1 = lambda1 > 0 ? pi$3 : -pi$3, - delta = abs(lambda1 - lambda0); - if (abs(delta - pi$3) < epsilon$2) { // line crosses a pole - stream.point(lambda0, phi0 = (phi0 + phi1) / 2 > 0 ? halfPi$2 : -halfPi$2); - stream.point(sign0, phi0); - stream.lineEnd(); - stream.lineStart(); - stream.point(sign1, phi0); - stream.point(lambda1, phi0); - clean = 0; - } else if (sign0 !== sign1 && delta >= pi$3) { // line crosses antimeridian - if (abs(lambda0 - sign0) < epsilon$2) lambda0 -= sign0 * epsilon$2; // handle degeneracies - if (abs(lambda1 - sign1) < epsilon$2) lambda1 -= sign1 * epsilon$2; - phi0 = clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1); - stream.point(sign0, phi0); - stream.lineEnd(); - stream.lineStart(); - stream.point(sign1, phi0); - clean = 0; - } - stream.point(lambda0 = lambda1, phi0 = phi1); - sign0 = sign1; - }, - lineEnd: function() { - stream.lineEnd(); - lambda0 = phi0 = NaN; - }, - clean: function() { - return 2 - clean; // if intersections, rejoin first and last segments - } +function forwardRotationLambda(deltaLambda) { + return function(lambda, phi) { + return lambda += deltaLambda, [lambda > pi$1 ? lambda - tau$1 : lambda < -pi$1 ? lambda + tau$1 : lambda, phi]; }; } -function clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1) { - var cosPhi0, - cosPhi1, - sinLambda0Lambda1 = sin$1(lambda0 - lambda1); - return abs(sinLambda0Lambda1) > epsilon$2 - ? atan((sin$1(phi0) * (cosPhi1 = cos$1(phi1)) * sin$1(lambda1) - - sin$1(phi1) * (cosPhi0 = cos$1(phi0)) * sin$1(lambda0)) - / (cosPhi0 * cosPhi1 * sinLambda0Lambda1)) - : (phi0 + phi1) / 2; +function rotationLambda(deltaLambda) { + var rotation = forwardRotationLambda(deltaLambda); + rotation.invert = forwardRotationLambda(-deltaLambda); + return rotation; } -function clipAntimeridianInterpolate(from, to, direction, stream) { - var phi; - if (from == null) { - phi = direction * halfPi$2; - stream.point(-pi$3, phi); - stream.point(0, phi); - stream.point(pi$3, phi); - stream.point(pi$3, 0); - stream.point(pi$3, -phi); - stream.point(0, -phi); - stream.point(-pi$3, -phi); - stream.point(-pi$3, 0); - stream.point(-pi$3, phi); - } else if (abs(from[0] - to[0]) > epsilon$2) { - var lambda = from[0] < to[0] ? pi$3 : -pi$3; - phi = direction * lambda / 2; - stream.point(-lambda, phi); - stream.point(0, phi); - stream.point(lambda, phi); - } else { - stream.point(to[0], to[1]); +function rotationPhiGamma(deltaPhi, deltaGamma) { + var cosDeltaPhi = cos$1(deltaPhi), + sinDeltaPhi = sin$1(deltaPhi), + cosDeltaGamma = cos$1(deltaGamma), + sinDeltaGamma = sin$1(deltaGamma); + + function rotation(lambda, phi) { + var cosPhi = cos$1(phi), + x = cos$1(lambda) * cosPhi, + y = sin$1(lambda) * cosPhi, + z = sin$1(phi), + k = z * cosDeltaPhi + x * sinDeltaPhi; + return [ + atan2$1(y * cosDeltaGamma - k * sinDeltaGamma, x * cosDeltaPhi - z * sinDeltaPhi), + asin$1(k * cosDeltaGamma + y * sinDeltaGamma) + ]; } -} -function clipCircle(radius) { - var cr = cos$1(radius), - delta = 6 * radians, - smallRadius = cr > 0, - notHemisphere = abs(cr) > epsilon$2; // TODO optimise for this common case + rotation.invert = function(lambda, phi) { + var cosPhi = cos$1(phi), + x = cos$1(lambda) * cosPhi, + y = sin$1(lambda) * cosPhi, + z = sin$1(phi), + k = z * cosDeltaGamma - y * sinDeltaGamma; + return [ + atan2$1(y * cosDeltaGamma + z * sinDeltaGamma, x * cosDeltaPhi + k * sinDeltaPhi), + asin$1(k * cosDeltaPhi - x * sinDeltaPhi) + ]; + }; - function interpolate(from, to, direction, stream) { - circleStream(stream, radius, delta, direction, from, to); - } + return rotation; +} - function visible(lambda, phi) { - return cos$1(lambda) * cos$1(phi) > cr; - } +function rotation(rotate) { + rotate = rotateRadians(rotate[0] * radians, rotate[1] * radians, rotate.length > 2 ? rotate[2] * radians : 0); - // Takes a line and cuts into visible segments. Return values used for polygon - // clipping: 0 - there were intersections or the line was empty; 1 - no - // intersections 2 - there were intersections, and the first and last segments - // should be rejoined. - function clipLine(stream) { - var point0, // previous point - c0, // code for previous point - v0, // visibility of previous point - v00, // visibility of first point - clean; // no intersections - return { - lineStart: function() { - v00 = v0 = false; - clean = 1; - }, - point: function(lambda, phi) { - var point1 = [lambda, phi], - point2, - v = visible(lambda, phi), - c = smallRadius - ? v ? 0 : code(lambda, phi) - : v ? code(lambda + (lambda < 0 ? pi$3 : -pi$3), phi) : 0; - if (!point0 && (v00 = v0 = v)) stream.lineStart(); - // Handle degeneracies. - // TODO ignore if not clipping polygons. - if (v !== v0) { - point2 = intersect(point0, point1); - if (!point2 || pointEqual(point0, point2) || pointEqual(point1, point2)) { - point1[0] += epsilon$2; - point1[1] += epsilon$2; - v = visible(point1[0], point1[1]); - } - } - if (v !== v0) { - clean = 0; - if (v) { - // outside going in - stream.lineStart(); - point2 = intersect(point1, point0); - stream.point(point2[0], point2[1]); - } else { - // inside going out - point2 = intersect(point0, point1); - stream.point(point2[0], point2[1]); - stream.lineEnd(); - } - point0 = point2; - } else if (notHemisphere && point0 && smallRadius ^ v) { - var t; - // If the codes for two points are different, or are both zero, - // and there this segment intersects with the small circle. - if (!(c & c0) && (t = intersect(point1, point0, true))) { - clean = 0; - if (smallRadius) { - stream.lineStart(); - stream.point(t[0][0], t[0][1]); - stream.point(t[1][0], t[1][1]); - stream.lineEnd(); - } else { - stream.point(t[1][0], t[1][1]); - stream.lineEnd(); - stream.lineStart(); - stream.point(t[0][0], t[0][1]); - } - } - } - if (v && (!point0 || !pointEqual(point0, point1))) { - stream.point(point1[0], point1[1]); - } - point0 = point1, v0 = v, c0 = c; - }, - lineEnd: function() { - if (v0) stream.lineEnd(); - point0 = null; - }, - // Rejoin first and last segments if there were intersections and the first - // and last points were visible. - clean: function() { - return clean | ((v00 && v0) << 1); - } - }; + function forward(coordinates) { + coordinates = rotate(coordinates[0] * radians, coordinates[1] * radians); + return coordinates[0] *= degrees, coordinates[1] *= degrees, coordinates; } - // Intersects the great circle between a and b with the clip circle. - function intersect(a, b, two) { - var pa = cartesian(a), - pb = cartesian(b); - - // We have two planes, n1.p = d1 and n2.p = d2. - // Find intersection line p(t) = c1 n1 + c2 n2 + t (n1 ⨯ n2). - var n1 = [1, 0, 0], // normal - n2 = cartesianCross(pa, pb), - n2n2 = cartesianDot(n2, n2), - n1n2 = n2[0], // cartesianDot(n1, n2), - determinant = n2n2 - n1n2 * n1n2; + forward.invert = function(coordinates) { + coordinates = rotate.invert(coordinates[0] * radians, coordinates[1] * radians); + return coordinates[0] *= degrees, coordinates[1] *= degrees, coordinates; + }; - // Two polar points. - if (!determinant) return !two && a; + return forward; +} - var c1 = cr * n2n2 / determinant, - c2 = -cr * n1n2 / determinant, - n1xn2 = cartesianCross(n1, n2), - A = cartesianScale(n1, c1), - B = cartesianScale(n2, c2); - cartesianAddInPlace(A, B); +// Generates a circle centered at [0°, 0°], with a given radius and precision. +function circleStream(stream, radius, delta, direction, t0, t1) { + if (!delta) return; + var cosRadius = cos$1(radius), + sinRadius = sin$1(radius), + step = direction * delta; + if (t0 == null) { + t0 = radius + direction * tau$1; + t1 = radius - step / 2; + } else { + t0 = circleRadius(cosRadius, t0); + t1 = circleRadius(cosRadius, t1); + if (direction > 0 ? t0 < t1 : t0 > t1) t0 += direction * tau$1; + } + for (var point, t = t0; direction > 0 ? t > t1 : t < t1; t -= step) { + point = spherical([cosRadius, -sinRadius * cos$1(t), -sinRadius * sin$1(t)]); + stream.point(point[0], point[1]); + } +} - // Solve |p(t)|^2 = 1. - var u = n1xn2, - w = cartesianDot(A, u), - uu = cartesianDot(u, u), - t2 = w * w - uu * (cartesianDot(A, A) - 1); +// Returns the signed angle of a cartesian point relative to [cosRadius, 0, 0]. +function circleRadius(cosRadius, point) { + point = cartesian(point), point[0] -= cosRadius; + cartesianNormalizeInPlace(point); + var radius = acos$1(-point[1]); + return ((-point[2] < 0 ? -radius : radius) + tau$1 - epsilon$1) % tau$1; +} - if (t2 < 0) return; +function circle$2() { + var center = constant$3([0, 0]), + radius = constant$3(90), + precision = constant$3(6), + ring, + rotate, + stream = {point: point}; - var t = sqrt(t2), - q = cartesianScale(u, (-w - t) / uu); - cartesianAddInPlace(q, A); - q = spherical(q); + function point(x, y) { + ring.push(x = rotate(x, y)); + x[0] *= degrees, x[1] *= degrees; + } - if (!two) return q; + function circle() { + var c = center.apply(this, arguments), + r = radius.apply(this, arguments) * radians, + p = precision.apply(this, arguments) * radians; + ring = []; + rotate = rotateRadians(-c[0] * radians, -c[1] * radians, 0).invert; + circleStream(stream, r, p, 1); + c = {type: "Polygon", coordinates: [ring]}; + ring = rotate = null; + return c; + } - // Two intersection points. - var lambda0 = a[0], - lambda1 = b[0], - phi0 = a[1], - phi1 = b[1], - z; + circle.center = function(_) { + return arguments.length ? (center = typeof _ === "function" ? _ : constant$3([+_[0], +_[1]]), circle) : center; + }; - if (lambda1 < lambda0) z = lambda0, lambda0 = lambda1, lambda1 = z; + circle.radius = function(_) { + return arguments.length ? (radius = typeof _ === "function" ? _ : constant$3(+_), circle) : radius; + }; - var delta = lambda1 - lambda0, - polar = abs(delta - pi$3) < epsilon$2, - meridian = polar || delta < epsilon$2; + circle.precision = function(_) { + return arguments.length ? (precision = typeof _ === "function" ? _ : constant$3(+_), circle) : precision; + }; - if (!polar && phi1 < phi0) z = phi0, phi0 = phi1, phi1 = z; + return circle; +} - // Check that the first point is between a and b. - if (meridian - ? polar - ? phi0 + phi1 > 0 ^ q[1] < (abs(q[0] - lambda0) < epsilon$2 ? phi0 : phi1) - : phi0 <= q[1] && q[1] <= phi1 - : delta > pi$3 ^ (lambda0 <= q[0] && q[0] <= lambda1)) { - var q1 = cartesianScale(u, (-w + t) / uu); - cartesianAddInPlace(q1, A); - return [q, spherical(q1)]; +function clipBuffer() { + var lines = [], + line; + return { + point: function(x, y, m) { + line.push([x, y, m]); + }, + lineStart: function() { + lines.push(line = []); + }, + lineEnd: noop$1, + rejoin: function() { + if (lines.length > 1) lines.push(lines.pop().concat(lines.shift())); + }, + result: function() { + var result = lines; + lines = []; + line = null; + return result; } - } - - // Generates a 4-bit vector representing the location of a point relative to - // the small circle's bounding box. - function code(lambda, phi) { - var r = smallRadius ? radius : pi$3 - radius, - code = 0; - if (lambda < -r) code |= 1; // left - else if (lambda > r) code |= 2; // right - if (phi < -r) code |= 4; // below - else if (phi > r) code |= 8; // above - return code; - } + }; +} - return clip(visible, clipLine, interpolate, smallRadius ? [0, -radius] : [-pi$3, radius - pi$3]); +function pointEqual(a, b) { + return abs$1(a[0] - b[0]) < epsilon$1 && abs$1(a[1] - b[1]) < epsilon$1; } -function clipLine(a, b, x0, y0, x1, y1) { - var ax = a[0], - ay = a[1], - bx = b[0], - by = b[1], - t0 = 0, - t1 = 1, - dx = bx - ax, - dy = by - ay, - r; +function Intersection(point, points, other, entry) { + this.x = point; + this.z = points; + this.o = other; // another intersection + this.e = entry; // is an entry? + this.v = false; // visited + this.n = this.p = null; // next & previous +} - r = x0 - ax; - if (!dx && r > 0) return; - r /= dx; - if (dx < 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } else if (dx > 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } +// A generalized polygon clipping algorithm: given a polygon that has been cut +// into its visible line segments, and rejoins the segments by interpolating +// along the clip edge. +function clipRejoin(segments, compareIntersection, startInside, interpolate, stream) { + var subject = [], + clip = [], + i, + n; - r = x1 - ax; - if (!dx && r < 0) return; - r /= dx; - if (dx < 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } else if (dx > 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } + segments.forEach(function(segment) { + if ((n = segment.length - 1) <= 0) return; + var n, p0 = segment[0], p1 = segment[n], x; - r = y0 - ay; - if (!dy && r > 0) return; - r /= dy; - if (dy < 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } else if (dy > 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } + if (pointEqual(p0, p1)) { + if (!p0[2] && !p1[2]) { + stream.lineStart(); + for (i = 0; i < n; ++i) stream.point((p0 = segment[i])[0], p0[1]); + stream.lineEnd(); + return; + } + // handle degenerate cases by moving the point + p1[0] += 2 * epsilon$1; + } - r = y1 - ay; - if (!dy && r < 0) return; - r /= dy; - if (dy < 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } else if (dy > 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } + subject.push(x = new Intersection(p0, segment, null, true)); + clip.push(x.o = new Intersection(p0, null, x, false)); + subject.push(x = new Intersection(p1, segment, null, false)); + clip.push(x.o = new Intersection(p1, null, x, true)); + }); - if (t0 > 0) a[0] = ax + t0 * dx, a[1] = ay + t0 * dy; - if (t1 < 1) b[0] = ax + t1 * dx, b[1] = ay + t1 * dy; - return true; -} + if (!subject.length) return; -var clipMax = 1e9, clipMin = -clipMax; + clip.sort(compareIntersection); + link$1(subject); + link$1(clip); -// TODO Use d3-polygon’s polygonContains here for the ring check? -// TODO Eliminate duplicate buffering in clipBuffer and polygon.push? + for (i = 0, n = clip.length; i < n; ++i) { + clip[i].e = startInside = !startInside; + } -function clipRectangle(x0, y0, x1, y1) { + var start = subject[0], + points, + point; - function visible(x, y) { - return x0 <= x && x <= x1 && y0 <= y && y <= y1; + while (1) { + // Find first unvisited intersection. + var current = start, + isSubject = true; + while (current.v) if ((current = current.n) === start) return; + points = current.z; + stream.lineStart(); + do { + current.v = current.o.v = true; + if (current.e) { + if (isSubject) { + for (i = 0, n = points.length; i < n; ++i) stream.point((point = points[i])[0], point[1]); + } else { + interpolate(current.x, current.n.x, 1, stream); + } + current = current.n; + } else { + if (isSubject) { + points = current.p.z; + for (i = points.length - 1; i >= 0; --i) stream.point((point = points[i])[0], point[1]); + } else { + interpolate(current.x, current.p.x, -1, stream); + } + current = current.p; + } + current = current.o; + points = current.z; + isSubject = !isSubject; + } while (!current.v); + stream.lineEnd(); } +} - function interpolate(from, to, direction, stream) { - var a = 0, a1 = 0; - if (from == null - || (a = corner(from, direction)) !== (a1 = corner(to, direction)) - || comparePoint(from, to) < 0 ^ direction > 0) { - do stream.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0); - while ((a = (a + direction + 4) % 4) !== a1); - } else { - stream.point(to[0], to[1]); - } +function link$1(array) { + if (!(n = array.length)) return; + var n, + i = 0, + a = array[0], + b; + while (++i < n) { + a.n = b = array[i]; + b.p = a; + a = b; } + a.n = b = array[0]; + b.p = a; +} - function corner(p, direction) { - return abs(p[0] - x0) < epsilon$2 ? direction > 0 ? 0 : 3 - : abs(p[0] - x1) < epsilon$2 ? direction > 0 ? 2 : 1 - : abs(p[1] - y0) < epsilon$2 ? direction > 0 ? 1 : 0 - : direction > 0 ? 3 : 2; // abs(p[1] - y1) < epsilon - } +function longitude(point) { + if (abs$1(point[0]) <= pi$1) + return point[0]; + else + return sign$1(point[0]) * ((abs$1(point[0]) + pi$1) % tau$1 - pi$1); +} - function compareIntersection(a, b) { - return comparePoint(a.x, b.x); - } +function polygonContains(polygon, point) { + var lambda = longitude(point), + phi = point[1], + sinPhi = sin$1(phi), + normal = [sin$1(lambda), -cos$1(lambda), 0], + angle = 0, + winding = 0; - function comparePoint(a, b) { - var ca = corner(a, 1), - cb = corner(b, 1); - return ca !== cb ? ca - cb - : ca === 0 ? b[1] - a[1] - : ca === 1 ? a[0] - b[0] - : ca === 2 ? a[1] - b[1] - : b[0] - a[0]; - } + var sum = new Adder(); - return function(stream) { - var activeStream = stream, - bufferStream = clipBuffer(), - segments, - polygon, - ring, - x__, y__, v__, // first point - x_, y_, v_, // previous point - first, - clean; + if (sinPhi === 1) phi = halfPi$1 + epsilon$1; + else if (sinPhi === -1) phi = -halfPi$1 - epsilon$1; - var clipStream = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, - polygonStart: polygonStart, - polygonEnd: polygonEnd - }; + for (var i = 0, n = polygon.length; i < n; ++i) { + if (!(m = (ring = polygon[i]).length)) continue; + var ring, + m, + point0 = ring[m - 1], + lambda0 = longitude(point0), + phi0 = point0[1] / 2 + quarterPi, + sinPhi0 = sin$1(phi0), + cosPhi0 = cos$1(phi0); - function point(x, y) { - if (visible(x, y)) activeStream.point(x, y); - } + for (var j = 0; j < m; ++j, lambda0 = lambda1, sinPhi0 = sinPhi1, cosPhi0 = cosPhi1, point0 = point1) { + var point1 = ring[j], + lambda1 = longitude(point1), + phi1 = point1[1] / 2 + quarterPi, + sinPhi1 = sin$1(phi1), + cosPhi1 = cos$1(phi1), + delta = lambda1 - lambda0, + sign = delta >= 0 ? 1 : -1, + absDelta = sign * delta, + antimeridian = absDelta > pi$1, + k = sinPhi0 * sinPhi1; - function polygonInside() { - var winding = 0; + sum.add(atan2$1(k * sign * sin$1(absDelta), cosPhi0 * cosPhi1 + k * cos$1(absDelta))); + angle += antimeridian ? delta + sign * tau$1 : delta; - for (var i = 0, n = polygon.length; i < n; ++i) { - for (var ring = polygon[i], j = 1, m = ring.length, point = ring[0], a0, a1, b0 = point[0], b1 = point[1]; j < m; ++j) { - a0 = b0, a1 = b1, point = ring[j], b0 = point[0], b1 = point[1]; - if (a1 <= y1) { if (b1 > y1 && (b0 - a0) * (y1 - a1) > (b1 - a1) * (x0 - a0)) ++winding; } - else { if (b1 <= y1 && (b0 - a0) * (y1 - a1) < (b1 - a1) * (x0 - a0)) --winding; } + // Are the longitudes either side of the point’s meridian (lambda), + // and are the latitudes smaller than the parallel (phi)? + if (antimeridian ^ lambda0 >= lambda ^ lambda1 >= lambda) { + var arc = cartesianCross(cartesian(point0), cartesian(point1)); + cartesianNormalizeInPlace(arc); + var intersection = cartesianCross(normal, arc); + cartesianNormalizeInPlace(intersection); + var phiArc = (antimeridian ^ delta >= 0 ? -1 : 1) * asin$1(intersection[2]); + if (phi > phiArc || phi === phiArc && (arc[0] || arc[1])) { + winding += antimeridian ^ delta >= 0 ? 1 : -1; } } - - return winding; } + } - // Buffer geometry within a polygon and then clip it en masse. - function polygonStart() { - activeStream = bufferStream, segments = [], polygon = [], clean = true; - } + // First, determine whether the South pole is inside or outside: + // + // It is inside if: + // * the polygon winds around it in a clockwise direction. + // * the polygon does not (cumulatively) wind around it, but has a negative + // (counter-clockwise) area. + // + // Second, count the (signed) number of times a segment crosses a lambda + // from the point to the South pole. If it is zero, then the point is the + // same side as the South pole. - function polygonEnd() { - var startInside = polygonInside(), - cleanInside = clean && startInside, - visible = (segments = merge(segments)).length; - if (cleanInside || visible) { - stream.polygonStart(); - if (cleanInside) { - stream.lineStart(); - interpolate(null, null, 1, stream); - stream.lineEnd(); - } - if (visible) { - clipRejoin(segments, compareIntersection, startInside, interpolate, stream); + return (angle < -epsilon$1 || angle < epsilon$1 && sum < -epsilon2) ^ (winding & 1); +} + +function clip(pointVisible, clipLine, interpolate, start) { + return function(sink) { + var line = clipLine(sink), + ringBuffer = clipBuffer(), + ringSink = clipLine(ringBuffer), + polygonStarted = false, + polygon, + segments, + ring; + + var clip = { + point: point, + lineStart: lineStart, + lineEnd: lineEnd, + polygonStart: function() { + clip.point = pointRing; + clip.lineStart = ringStart; + clip.lineEnd = ringEnd; + segments = []; + polygon = []; + }, + polygonEnd: function() { + clip.point = point; + clip.lineStart = lineStart; + clip.lineEnd = lineEnd; + segments = merge(segments); + var startInside = polygonContains(polygon, start); + if (segments.length) { + if (!polygonStarted) sink.polygonStart(), polygonStarted = true; + clipRejoin(segments, compareIntersection, startInside, interpolate, sink); + } else if (startInside) { + if (!polygonStarted) sink.polygonStart(), polygonStarted = true; + sink.lineStart(); + interpolate(null, null, 1, sink); + sink.lineEnd(); } - stream.polygonEnd(); + if (polygonStarted) sink.polygonEnd(), polygonStarted = false; + segments = polygon = null; + }, + sphere: function() { + sink.polygonStart(); + sink.lineStart(); + interpolate(null, null, 1, sink); + sink.lineEnd(); + sink.polygonEnd(); } - activeStream = stream, segments = polygon = ring = null; + }; + + function point(lambda, phi) { + if (pointVisible(lambda, phi)) sink.point(lambda, phi); + } + + function pointLine(lambda, phi) { + line.point(lambda, phi); } function lineStart() { - clipStream.point = linePoint; - if (polygon) polygon.push(ring = []); - first = true; - v_ = false; - x_ = y_ = NaN; + clip.point = pointLine; + line.lineStart(); } - // TODO rather than special-case polygons, simply handle them separately. - // Ideally, coincident intersection points should be jittered to avoid - // clipping issues. function lineEnd() { - if (segments) { - linePoint(x__, y__); - if (v__ && v_) bufferStream.rejoin(); - segments.push(bufferStream.result()); - } - clipStream.point = point; - if (v_) activeStream.lineEnd(); + clip.point = point; + line.lineEnd(); } - function linePoint(x, y) { - var v = visible(x, y); - if (polygon) ring.push([x, y]); - if (first) { - x__ = x, y__ = y, v__ = v; - first = false; - if (v) { - activeStream.lineStart(); - activeStream.point(x, y); - } - } else { - if (v && v_) activeStream.point(x, y); - else { - var a = [x_ = Math.max(clipMin, Math.min(clipMax, x_)), y_ = Math.max(clipMin, Math.min(clipMax, y_))], - b = [x = Math.max(clipMin, Math.min(clipMax, x)), y = Math.max(clipMin, Math.min(clipMax, y))]; - if (clipLine(a, b, x0, y0, x1, y1)) { - if (!v_) { - activeStream.lineStart(); - activeStream.point(a[0], a[1]); - } - activeStream.point(b[0], b[1]); - if (!v) activeStream.lineEnd(); - clean = false; - } else if (v) { - activeStream.lineStart(); - activeStream.point(x, y); - clean = false; - } + function pointRing(lambda, phi) { + ring.push([lambda, phi]); + ringSink.point(lambda, phi); + } + + function ringStart() { + ringSink.lineStart(); + ring = []; + } + + function ringEnd() { + pointRing(ring[0][0], ring[0][1]); + ringSink.lineEnd(); + + var clean = ringSink.clean(), + ringSegments = ringBuffer.result(), + i, n = ringSegments.length, m, + segment, + point; + + ring.pop(); + polygon.push(ring); + ring = null; + + if (!n) return; + + // No intersections. + if (clean & 1) { + segment = ringSegments[0]; + if ((m = segment.length - 1) > 0) { + if (!polygonStarted) sink.polygonStart(), polygonStarted = true; + sink.lineStart(); + for (i = 0; i < m; ++i) sink.point((point = segment[i])[0], point[1]); + sink.lineEnd(); } + return; } - x_ = x, y_ = y, v_ = v; + + // Rejoin connected segments. + // TODO reuse ringBuffer.rejoin()? + if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift())); + + segments.push(ringSegments.filter(validSegment)); } - return clipStream; + return clip; }; } -function extent$1() { - var x0 = 0, - y0 = 0, - x1 = 960, - y1 = 500, - cache, - cacheStream, - clip; +function validSegment(segment) { + return segment.length > 1; +} - return clip = { - stream: function(stream) { - return cache && cacheStream === stream ? cache : cache = clipRectangle(x0, y0, x1, y1)(cacheStream = stream); - }, - extent: function(_) { - return arguments.length ? (x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1], cache = cacheStream = null, clip) : [[x0, y0], [x1, y1]]; - } - }; +// Intersections are sorted along the clip edge. For both antimeridian cutting +// and circle clipping, the same comparison is used. +function compareIntersection(a, b) { + return ((a = a.x)[0] < 0 ? a[1] - halfPi$1 - epsilon$1 : halfPi$1 - a[1]) + - ((b = b.x)[0] < 0 ? b[1] - halfPi$1 - epsilon$1 : halfPi$1 - b[1]); } -var lengthSum = adder(), - lambda0$2, - sinPhi0$1, - cosPhi0$1; +var clipAntimeridian = clip( + function() { return true; }, + clipAntimeridianLine, + clipAntimeridianInterpolate, + [-pi$1, -halfPi$1] +); -var lengthStream = { - sphere: noop$2, - point: noop$2, - lineStart: lengthLineStart, - lineEnd: noop$2, - polygonStart: noop$2, - polygonEnd: noop$2 -}; +// Takes a line and cuts into visible segments. Return values: 0 - there were +// intersections or the line was empty; 1 - no intersections; 2 - there were +// intersections, and the first and last segments should be rejoined. +function clipAntimeridianLine(stream) { + var lambda0 = NaN, + phi0 = NaN, + sign0 = NaN, + clean; // no intersections -function lengthLineStart() { - lengthStream.point = lengthPointFirst; - lengthStream.lineEnd = lengthLineEnd; + return { + lineStart: function() { + stream.lineStart(); + clean = 1; + }, + point: function(lambda1, phi1) { + var sign1 = lambda1 > 0 ? pi$1 : -pi$1, + delta = abs$1(lambda1 - lambda0); + if (abs$1(delta - pi$1) < epsilon$1) { // line crosses a pole + stream.point(lambda0, phi0 = (phi0 + phi1) / 2 > 0 ? halfPi$1 : -halfPi$1); + stream.point(sign0, phi0); + stream.lineEnd(); + stream.lineStart(); + stream.point(sign1, phi0); + stream.point(lambda1, phi0); + clean = 0; + } else if (sign0 !== sign1 && delta >= pi$1) { // line crosses antimeridian + if (abs$1(lambda0 - sign0) < epsilon$1) lambda0 -= sign0 * epsilon$1; // handle degeneracies + if (abs$1(lambda1 - sign1) < epsilon$1) lambda1 -= sign1 * epsilon$1; + phi0 = clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1); + stream.point(sign0, phi0); + stream.lineEnd(); + stream.lineStart(); + stream.point(sign1, phi0); + clean = 0; + } + stream.point(lambda0 = lambda1, phi0 = phi1); + sign0 = sign1; + }, + lineEnd: function() { + stream.lineEnd(); + lambda0 = phi0 = NaN; + }, + clean: function() { + return 2 - clean; // if intersections, rejoin first and last segments + } + }; } -function lengthLineEnd() { - lengthStream.point = lengthStream.lineEnd = noop$2; +function clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1) { + var cosPhi0, + cosPhi1, + sinLambda0Lambda1 = sin$1(lambda0 - lambda1); + return abs$1(sinLambda0Lambda1) > epsilon$1 + ? atan((sin$1(phi0) * (cosPhi1 = cos$1(phi1)) * sin$1(lambda1) + - sin$1(phi1) * (cosPhi0 = cos$1(phi0)) * sin$1(lambda0)) + / (cosPhi0 * cosPhi1 * sinLambda0Lambda1)) + : (phi0 + phi1) / 2; } -function lengthPointFirst(lambda, phi) { - lambda *= radians, phi *= radians; - lambda0$2 = lambda, sinPhi0$1 = sin$1(phi), cosPhi0$1 = cos$1(phi); - lengthStream.point = lengthPoint; +function clipAntimeridianInterpolate(from, to, direction, stream) { + var phi; + if (from == null) { + phi = direction * halfPi$1; + stream.point(-pi$1, phi); + stream.point(0, phi); + stream.point(pi$1, phi); + stream.point(pi$1, 0); + stream.point(pi$1, -phi); + stream.point(0, -phi); + stream.point(-pi$1, -phi); + stream.point(-pi$1, 0); + stream.point(-pi$1, phi); + } else if (abs$1(from[0] - to[0]) > epsilon$1) { + var lambda = from[0] < to[0] ? pi$1 : -pi$1; + phi = direction * lambda / 2; + stream.point(-lambda, phi); + stream.point(0, phi); + stream.point(lambda, phi); + } else { + stream.point(to[0], to[1]); + } } -function lengthPoint(lambda, phi) { - lambda *= radians, phi *= radians; - var sinPhi = sin$1(phi), - cosPhi = cos$1(phi), - delta = abs(lambda - lambda0$2), - cosDelta = cos$1(delta), - sinDelta = sin$1(delta), - x = cosPhi * sinDelta, - y = cosPhi0$1 * sinPhi - sinPhi0$1 * cosPhi * cosDelta, - z = sinPhi0$1 * sinPhi + cosPhi0$1 * cosPhi * cosDelta; - lengthSum.add(atan2(sqrt(x * x + y * y), z)); - lambda0$2 = lambda, sinPhi0$1 = sinPhi, cosPhi0$1 = cosPhi; -} +function clipCircle(radius) { + var cr = cos$1(radius), + delta = 6 * radians, + smallRadius = cr > 0, + notHemisphere = abs$1(cr) > epsilon$1; // TODO optimise for this common case -function length$1(object) { - lengthSum.reset(); - geoStream(object, lengthStream); - return +lengthSum; -} - -var coordinates = [null, null], - object$1 = {type: "LineString", coordinates: coordinates}; - -function distance(a, b) { - coordinates[0] = a; - coordinates[1] = b; - return length$1(object$1); -} + function interpolate(from, to, direction, stream) { + circleStream(stream, radius, delta, direction, from, to); + } -var containsObjectType = { - Feature: function(object, point) { - return containsGeometry(object.geometry, point); - }, - FeatureCollection: function(object, point) { - var features = object.features, i = -1, n = features.length; - while (++i < n) if (containsGeometry(features[i].geometry, point)) return true; - return false; + function visible(lambda, phi) { + return cos$1(lambda) * cos$1(phi) > cr; } -}; -var containsGeometryType = { - Sphere: function() { - return true; - }, - Point: function(object, point) { - return containsPoint(object.coordinates, point); - }, - MultiPoint: function(object, point) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) if (containsPoint(coordinates[i], point)) return true; - return false; - }, - LineString: function(object, point) { - return containsLine(object.coordinates, point); - }, - MultiLineString: function(object, point) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) if (containsLine(coordinates[i], point)) return true; - return false; - }, - Polygon: function(object, point) { - return containsPolygon(object.coordinates, point); - }, - MultiPolygon: function(object, point) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) if (containsPolygon(coordinates[i], point)) return true; - return false; - }, - GeometryCollection: function(object, point) { - var geometries = object.geometries, i = -1, n = geometries.length; - while (++i < n) if (containsGeometry(geometries[i], point)) return true; - return false; + // Takes a line and cuts into visible segments. Return values used for polygon + // clipping: 0 - there were intersections or the line was empty; 1 - no + // intersections 2 - there were intersections, and the first and last segments + // should be rejoined. + function clipLine(stream) { + var point0, // previous point + c0, // code for previous point + v0, // visibility of previous point + v00, // visibility of first point + clean; // no intersections + return { + lineStart: function() { + v00 = v0 = false; + clean = 1; + }, + point: function(lambda, phi) { + var point1 = [lambda, phi], + point2, + v = visible(lambda, phi), + c = smallRadius + ? v ? 0 : code(lambda, phi) + : v ? code(lambda + (lambda < 0 ? pi$1 : -pi$1), phi) : 0; + if (!point0 && (v00 = v0 = v)) stream.lineStart(); + if (v !== v0) { + point2 = intersect(point0, point1); + if (!point2 || pointEqual(point0, point2) || pointEqual(point1, point2)) + point1[2] = 1; + } + if (v !== v0) { + clean = 0; + if (v) { + // outside going in + stream.lineStart(); + point2 = intersect(point1, point0); + stream.point(point2[0], point2[1]); + } else { + // inside going out + point2 = intersect(point0, point1); + stream.point(point2[0], point2[1], 2); + stream.lineEnd(); + } + point0 = point2; + } else if (notHemisphere && point0 && smallRadius ^ v) { + var t; + // If the codes for two points are different, or are both zero, + // and there this segment intersects with the small circle. + if (!(c & c0) && (t = intersect(point1, point0, true))) { + clean = 0; + if (smallRadius) { + stream.lineStart(); + stream.point(t[0][0], t[0][1]); + stream.point(t[1][0], t[1][1]); + stream.lineEnd(); + } else { + stream.point(t[1][0], t[1][1]); + stream.lineEnd(); + stream.lineStart(); + stream.point(t[0][0], t[0][1], 3); + } + } + } + if (v && (!point0 || !pointEqual(point0, point1))) { + stream.point(point1[0], point1[1]); + } + point0 = point1, v0 = v, c0 = c; + }, + lineEnd: function() { + if (v0) stream.lineEnd(); + point0 = null; + }, + // Rejoin first and last segments if there were intersections and the first + // and last points were visible. + clean: function() { + return clean | ((v00 && v0) << 1); + } + }; } -}; -function containsGeometry(geometry, point) { - return geometry && containsGeometryType.hasOwnProperty(geometry.type) - ? containsGeometryType[geometry.type](geometry, point) - : false; -} + // Intersects the great circle between a and b with the clip circle. + function intersect(a, b, two) { + var pa = cartesian(a), + pb = cartesian(b); -function containsPoint(coordinates, point) { - return distance(coordinates, point) === 0; -} + // We have two planes, n1.p = d1 and n2.p = d2. + // Find intersection line p(t) = c1 n1 + c2 n2 + t (n1 ⨯ n2). + var n1 = [1, 0, 0], // normal + n2 = cartesianCross(pa, pb), + n2n2 = cartesianDot(n2, n2), + n1n2 = n2[0], // cartesianDot(n1, n2), + determinant = n2n2 - n1n2 * n1n2; -function containsLine(coordinates, point) { - var ao, bo, ab; - for (var i = 0, n = coordinates.length; i < n; i++) { - bo = distance(coordinates[i], point); - if (bo === 0) return true; - if (i > 0) { - ab = distance(coordinates[i], coordinates[i - 1]); - if ( - ab > 0 && - ao <= ab && - bo <= ab && - (ao + bo - ab) * (1 - Math.pow((ao - bo) / ab, 2)) < epsilon2$1 * ab - ) - return true; - } - ao = bo; - } - return false; -} + // Two polar points. + if (!determinant) return !two && a; -function containsPolygon(coordinates, point) { - return !!polygonContains(coordinates.map(ringRadians), pointRadians(point)); -} + var c1 = cr * n2n2 / determinant, + c2 = -cr * n1n2 / determinant, + n1xn2 = cartesianCross(n1, n2), + A = cartesianScale(n1, c1), + B = cartesianScale(n2, c2); + cartesianAddInPlace(A, B); -function ringRadians(ring) { - return ring = ring.map(pointRadians), ring.pop(), ring; -} + // Solve |p(t)|^2 = 1. + var u = n1xn2, + w = cartesianDot(A, u), + uu = cartesianDot(u, u), + t2 = w * w - uu * (cartesianDot(A, A) - 1); -function pointRadians(point) { - return [point[0] * radians, point[1] * radians]; -} + if (t2 < 0) return; -function contains$1(object, point) { - return (object && containsObjectType.hasOwnProperty(object.type) - ? containsObjectType[object.type] - : containsGeometry)(object, point); -} + var t = sqrt$2(t2), + q = cartesianScale(u, (-w - t) / uu); + cartesianAddInPlace(q, A); + q = spherical(q); -function graticuleX(y0, y1, dy) { - var y = sequence(y0, y1 - epsilon$2, dy).concat(y1); - return function(x) { return y.map(function(y) { return [x, y]; }); }; -} + if (!two) return q; -function graticuleY(x0, x1, dx) { - var x = sequence(x0, x1 - epsilon$2, dx).concat(x1); - return function(y) { return x.map(function(x) { return [x, y]; }); }; -} + // Two intersection points. + var lambda0 = a[0], + lambda1 = b[0], + phi0 = a[1], + phi1 = b[1], + z; -function graticule() { - var x1, x0, X1, X0, - y1, y0, Y1, Y0, - dx = 10, dy = dx, DX = 90, DY = 360, - x, y, X, Y, - precision = 2.5; + if (lambda1 < lambda0) z = lambda0, lambda0 = lambda1, lambda1 = z; - function graticule() { - return {type: "MultiLineString", coordinates: lines()}; + var delta = lambda1 - lambda0, + polar = abs$1(delta - pi$1) < epsilon$1, + meridian = polar || delta < epsilon$1; + + if (!polar && phi1 < phi0) z = phi0, phi0 = phi1, phi1 = z; + + // Check that the first point is between a and b. + if (meridian + ? polar + ? phi0 + phi1 > 0 ^ q[1] < (abs$1(q[0] - lambda0) < epsilon$1 ? phi0 : phi1) + : phi0 <= q[1] && q[1] <= phi1 + : delta > pi$1 ^ (lambda0 <= q[0] && q[0] <= lambda1)) { + var q1 = cartesianScale(u, (-w + t) / uu); + cartesianAddInPlace(q1, A); + return [q, spherical(q1)]; + } } - function lines() { - return sequence(ceil(X0 / DX) * DX, X1, DX).map(X) - .concat(sequence(ceil(Y0 / DY) * DY, Y1, DY).map(Y)) - .concat(sequence(ceil(x0 / dx) * dx, x1, dx).filter(function(x) { return abs(x % DX) > epsilon$2; }).map(x)) - .concat(sequence(ceil(y0 / dy) * dy, y1, dy).filter(function(y) { return abs(y % DY) > epsilon$2; }).map(y)); + // Generates a 4-bit vector representing the location of a point relative to + // the small circle's bounding box. + function code(lambda, phi) { + var r = smallRadius ? radius : pi$1 - radius, + code = 0; + if (lambda < -r) code |= 1; // left + else if (lambda > r) code |= 2; // right + if (phi < -r) code |= 4; // below + else if (phi > r) code |= 8; // above + return code; } - graticule.lines = function() { - return lines().map(function(coordinates) { return {type: "LineString", coordinates: coordinates}; }); - }; + return clip(visible, clipLine, interpolate, smallRadius ? [0, -radius] : [-pi$1, radius - pi$1]); +} - graticule.outline = function() { - return { - type: "Polygon", - coordinates: [ - X(X0).concat( - Y(Y1).slice(1), - X(X1).reverse().slice(1), - Y(Y0).reverse().slice(1)) - ] - }; - }; - - graticule.extent = function(_) { - if (!arguments.length) return graticule.extentMinor(); - return graticule.extentMajor(_).extentMinor(_); - }; - - graticule.extentMajor = function(_) { - if (!arguments.length) return [[X0, Y0], [X1, Y1]]; - X0 = +_[0][0], X1 = +_[1][0]; - Y0 = +_[0][1], Y1 = +_[1][1]; - if (X0 > X1) _ = X0, X0 = X1, X1 = _; - if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _; - return graticule.precision(precision); - }; - - graticule.extentMinor = function(_) { - if (!arguments.length) return [[x0, y0], [x1, y1]]; - x0 = +_[0][0], x1 = +_[1][0]; - y0 = +_[0][1], y1 = +_[1][1]; - if (x0 > x1) _ = x0, x0 = x1, x1 = _; - if (y0 > y1) _ = y0, y0 = y1, y1 = _; - return graticule.precision(precision); - }; - - graticule.step = function(_) { - if (!arguments.length) return graticule.stepMinor(); - return graticule.stepMajor(_).stepMinor(_); - }; +function clipLine(a, b, x0, y0, x1, y1) { + var ax = a[0], + ay = a[1], + bx = b[0], + by = b[1], + t0 = 0, + t1 = 1, + dx = bx - ax, + dy = by - ay, + r; - graticule.stepMajor = function(_) { - if (!arguments.length) return [DX, DY]; - DX = +_[0], DY = +_[1]; - return graticule; - }; + r = x0 - ax; + if (!dx && r > 0) return; + r /= dx; + if (dx < 0) { + if (r < t0) return; + if (r < t1) t1 = r; + } else if (dx > 0) { + if (r > t1) return; + if (r > t0) t0 = r; + } - graticule.stepMinor = function(_) { - if (!arguments.length) return [dx, dy]; - dx = +_[0], dy = +_[1]; - return graticule; - }; + r = x1 - ax; + if (!dx && r < 0) return; + r /= dx; + if (dx < 0) { + if (r > t1) return; + if (r > t0) t0 = r; + } else if (dx > 0) { + if (r < t0) return; + if (r < t1) t1 = r; + } - graticule.precision = function(_) { - if (!arguments.length) return precision; - precision = +_; - x = graticuleX(y0, y1, 90); - y = graticuleY(x0, x1, precision); - X = graticuleX(Y0, Y1, 90); - Y = graticuleY(X0, X1, precision); - return graticule; - }; + r = y0 - ay; + if (!dy && r > 0) return; + r /= dy; + if (dy < 0) { + if (r < t0) return; + if (r < t1) t1 = r; + } else if (dy > 0) { + if (r > t1) return; + if (r > t0) t0 = r; + } - return graticule - .extentMajor([[-180, -90 + epsilon$2], [180, 90 - epsilon$2]]) - .extentMinor([[-180, -80 - epsilon$2], [180, 80 + epsilon$2]]); -} + r = y1 - ay; + if (!dy && r < 0) return; + r /= dy; + if (dy < 0) { + if (r > t1) return; + if (r > t0) t0 = r; + } else if (dy > 0) { + if (r < t0) return; + if (r < t1) t1 = r; + } -function graticule10() { - return graticule()(); + if (t0 > 0) a[0] = ax + t0 * dx, a[1] = ay + t0 * dy; + if (t1 < 1) b[0] = ax + t1 * dx, b[1] = ay + t1 * dy; + return true; } -function interpolate$1(a, b) { - var x0 = a[0] * radians, - y0 = a[1] * radians, - x1 = b[0] * radians, - y1 = b[1] * radians, - cy0 = cos$1(y0), - sy0 = sin$1(y0), - cy1 = cos$1(y1), - sy1 = sin$1(y1), - kx0 = cy0 * cos$1(x0), - ky0 = cy0 * sin$1(x0), - kx1 = cy1 * cos$1(x1), - ky1 = cy1 * sin$1(x1), - d = 2 * asin(sqrt(haversin(y1 - y0) + cy0 * cy1 * haversin(x1 - x0))), - k = sin$1(d); - - var interpolate = d ? function(t) { - var B = sin$1(t *= d) / k, - A = sin$1(d - t) / k, - x = A * kx0 + B * kx1, - y = A * ky0 + B * ky1, - z = A * sy0 + B * sy1; - return [ - atan2(y, x) * degrees$1, - atan2(z, sqrt(x * x + y * y)) * degrees$1 - ]; - } : function() { - return [x0 * degrees$1, y0 * degrees$1]; - }; +var clipMax = 1e9, clipMin = -clipMax; - interpolate.distance = d; +// TODO Use d3-polygon’s polygonContains here for the ring check? +// TODO Eliminate duplicate buffering in clipBuffer and polygon.push? - return interpolate; -} +function clipRectangle(x0, y0, x1, y1) { -function identity$4(x) { - return x; -} + function visible(x, y) { + return x0 <= x && x <= x1 && y0 <= y && y <= y1; + } -var areaSum$1 = adder(), - areaRingSum$1 = adder(), - x00, - y00, - x0$1, - y0$1; + function interpolate(from, to, direction, stream) { + var a = 0, a1 = 0; + if (from == null + || (a = corner(from, direction)) !== (a1 = corner(to, direction)) + || comparePoint(from, to) < 0 ^ direction > 0) { + do stream.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0); + while ((a = (a + direction + 4) % 4) !== a1); + } else { + stream.point(to[0], to[1]); + } + } -var areaStream$1 = { - point: noop$2, - lineStart: noop$2, - lineEnd: noop$2, - polygonStart: function() { - areaStream$1.lineStart = areaRingStart$1; - areaStream$1.lineEnd = areaRingEnd$1; - }, - polygonEnd: function() { - areaStream$1.lineStart = areaStream$1.lineEnd = areaStream$1.point = noop$2; - areaSum$1.add(abs(areaRingSum$1)); - areaRingSum$1.reset(); - }, - result: function() { - var area = areaSum$1 / 2; - areaSum$1.reset(); - return area; + function corner(p, direction) { + return abs$1(p[0] - x0) < epsilon$1 ? direction > 0 ? 0 : 3 + : abs$1(p[0] - x1) < epsilon$1 ? direction > 0 ? 2 : 1 + : abs$1(p[1] - y0) < epsilon$1 ? direction > 0 ? 1 : 0 + : direction > 0 ? 3 : 2; // abs(p[1] - y1) < epsilon } -}; -function areaRingStart$1() { - areaStream$1.point = areaPointFirst$1; -} + function compareIntersection(a, b) { + return comparePoint(a.x, b.x); + } -function areaPointFirst$1(x, y) { - areaStream$1.point = areaPoint$1; - x00 = x0$1 = x, y00 = y0$1 = y; -} + function comparePoint(a, b) { + var ca = corner(a, 1), + cb = corner(b, 1); + return ca !== cb ? ca - cb + : ca === 0 ? b[1] - a[1] + : ca === 1 ? a[0] - b[0] + : ca === 2 ? a[1] - b[1] + : b[0] - a[0]; + } -function areaPoint$1(x, y) { - areaRingSum$1.add(y0$1 * x - x0$1 * y); - x0$1 = x, y0$1 = y; -} + return function(stream) { + var activeStream = stream, + bufferStream = clipBuffer(), + segments, + polygon, + ring, + x__, y__, v__, // first point + x_, y_, v_, // previous point + first, + clean; -function areaRingEnd$1() { - areaPoint$1(x00, y00); -} + var clipStream = { + point: point, + lineStart: lineStart, + lineEnd: lineEnd, + polygonStart: polygonStart, + polygonEnd: polygonEnd + }; -var x0$2 = Infinity, - y0$2 = x0$2, - x1 = -x0$2, - y1 = x1; + function point(x, y) { + if (visible(x, y)) activeStream.point(x, y); + } -var boundsStream$1 = { - point: boundsPoint$1, - lineStart: noop$2, - lineEnd: noop$2, - polygonStart: noop$2, - polygonEnd: noop$2, - result: function() { - var bounds = [[x0$2, y0$2], [x1, y1]]; - x1 = y1 = -(y0$2 = x0$2 = Infinity); - return bounds; - } -}; + function polygonInside() { + var winding = 0; -function boundsPoint$1(x, y) { - if (x < x0$2) x0$2 = x; - if (x > x1) x1 = x; - if (y < y0$2) y0$2 = y; - if (y > y1) y1 = y; -} + for (var i = 0, n = polygon.length; i < n; ++i) { + for (var ring = polygon[i], j = 1, m = ring.length, point = ring[0], a0, a1, b0 = point[0], b1 = point[1]; j < m; ++j) { + a0 = b0, a1 = b1, point = ring[j], b0 = point[0], b1 = point[1]; + if (a1 <= y1) { if (b1 > y1 && (b0 - a0) * (y1 - a1) > (b1 - a1) * (x0 - a0)) ++winding; } + else { if (b1 <= y1 && (b0 - a0) * (y1 - a1) < (b1 - a1) * (x0 - a0)) --winding; } + } + } -// TODO Enforce positive area for exterior, negative area for interior? + return winding; + } -var X0$1 = 0, - Y0$1 = 0, - Z0$1 = 0, - X1$1 = 0, - Y1$1 = 0, - Z1$1 = 0, - X2$1 = 0, - Y2$1 = 0, - Z2$1 = 0, - x00$1, - y00$1, - x0$3, - y0$3; + // Buffer geometry within a polygon and then clip it en masse. + function polygonStart() { + activeStream = bufferStream, segments = [], polygon = [], clean = true; + } -var centroidStream$1 = { - point: centroidPoint$1, - lineStart: centroidLineStart$1, - lineEnd: centroidLineEnd$1, - polygonStart: function() { - centroidStream$1.lineStart = centroidRingStart$1; - centroidStream$1.lineEnd = centroidRingEnd$1; - }, - polygonEnd: function() { - centroidStream$1.point = centroidPoint$1; - centroidStream$1.lineStart = centroidLineStart$1; - centroidStream$1.lineEnd = centroidLineEnd$1; - }, - result: function() { - var centroid = Z2$1 ? [X2$1 / Z2$1, Y2$1 / Z2$1] - : Z1$1 ? [X1$1 / Z1$1, Y1$1 / Z1$1] - : Z0$1 ? [X0$1 / Z0$1, Y0$1 / Z0$1] - : [NaN, NaN]; - X0$1 = Y0$1 = Z0$1 = - X1$1 = Y1$1 = Z1$1 = - X2$1 = Y2$1 = Z2$1 = 0; - return centroid; - } -}; + function polygonEnd() { + var startInside = polygonInside(), + cleanInside = clean && startInside, + visible = (segments = merge(segments)).length; + if (cleanInside || visible) { + stream.polygonStart(); + if (cleanInside) { + stream.lineStart(); + interpolate(null, null, 1, stream); + stream.lineEnd(); + } + if (visible) { + clipRejoin(segments, compareIntersection, startInside, interpolate, stream); + } + stream.polygonEnd(); + } + activeStream = stream, segments = polygon = ring = null; + } -function centroidPoint$1(x, y) { - X0$1 += x; - Y0$1 += y; - ++Z0$1; -} + function lineStart() { + clipStream.point = linePoint; + if (polygon) polygon.push(ring = []); + first = true; + v_ = false; + x_ = y_ = NaN; + } -function centroidLineStart$1() { - centroidStream$1.point = centroidPointFirstLine; -} + // TODO rather than special-case polygons, simply handle them separately. + // Ideally, coincident intersection points should be jittered to avoid + // clipping issues. + function lineEnd() { + if (segments) { + linePoint(x__, y__); + if (v__ && v_) bufferStream.rejoin(); + segments.push(bufferStream.result()); + } + clipStream.point = point; + if (v_) activeStream.lineEnd(); + } -function centroidPointFirstLine(x, y) { - centroidStream$1.point = centroidPointLine; - centroidPoint$1(x0$3 = x, y0$3 = y); + function linePoint(x, y) { + var v = visible(x, y); + if (polygon) ring.push([x, y]); + if (first) { + x__ = x, y__ = y, v__ = v; + first = false; + if (v) { + activeStream.lineStart(); + activeStream.point(x, y); + } + } else { + if (v && v_) activeStream.point(x, y); + else { + var a = [x_ = Math.max(clipMin, Math.min(clipMax, x_)), y_ = Math.max(clipMin, Math.min(clipMax, y_))], + b = [x = Math.max(clipMin, Math.min(clipMax, x)), y = Math.max(clipMin, Math.min(clipMax, y))]; + if (clipLine(a, b, x0, y0, x1, y1)) { + if (!v_) { + activeStream.lineStart(); + activeStream.point(a[0], a[1]); + } + activeStream.point(b[0], b[1]); + if (!v) activeStream.lineEnd(); + clean = false; + } else if (v) { + activeStream.lineStart(); + activeStream.point(x, y); + clean = false; + } + } + } + x_ = x, y_ = y, v_ = v; + } + + return clipStream; + }; } -function centroidPointLine(x, y) { - var dx = x - x0$3, dy = y - y0$3, z = sqrt(dx * dx + dy * dy); - X1$1 += z * (x0$3 + x) / 2; - Y1$1 += z * (y0$3 + y) / 2; - Z1$1 += z; - centroidPoint$1(x0$3 = x, y0$3 = y); +function extent() { + var x0 = 0, + y0 = 0, + x1 = 960, + y1 = 500, + cache, + cacheStream, + clip; + + return clip = { + stream: function(stream) { + return cache && cacheStream === stream ? cache : cache = clipRectangle(x0, y0, x1, y1)(cacheStream = stream); + }, + extent: function(_) { + return arguments.length ? (x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1], cache = cacheStream = null, clip) : [[x0, y0], [x1, y1]]; + } + }; } -function centroidLineEnd$1() { - centroidStream$1.point = centroidPoint$1; +var lengthSum$1, + lambda0, + sinPhi0, + cosPhi0; + +var lengthStream$1 = { + sphere: noop$1, + point: noop$1, + lineStart: lengthLineStart, + lineEnd: noop$1, + polygonStart: noop$1, + polygonEnd: noop$1 +}; + +function lengthLineStart() { + lengthStream$1.point = lengthPointFirst$1; + lengthStream$1.lineEnd = lengthLineEnd; } -function centroidRingStart$1() { - centroidStream$1.point = centroidPointFirstRing; +function lengthLineEnd() { + lengthStream$1.point = lengthStream$1.lineEnd = noop$1; } -function centroidRingEnd$1() { - centroidPointRing(x00$1, y00$1); +function lengthPointFirst$1(lambda, phi) { + lambda *= radians, phi *= radians; + lambda0 = lambda, sinPhi0 = sin$1(phi), cosPhi0 = cos$1(phi); + lengthStream$1.point = lengthPoint$1; } -function centroidPointFirstRing(x, y) { - centroidStream$1.point = centroidPointRing; - centroidPoint$1(x00$1 = x0$3 = x, y00$1 = y0$3 = y); +function lengthPoint$1(lambda, phi) { + lambda *= radians, phi *= radians; + var sinPhi = sin$1(phi), + cosPhi = cos$1(phi), + delta = abs$1(lambda - lambda0), + cosDelta = cos$1(delta), + sinDelta = sin$1(delta), + x = cosPhi * sinDelta, + y = cosPhi0 * sinPhi - sinPhi0 * cosPhi * cosDelta, + z = sinPhi0 * sinPhi + cosPhi0 * cosPhi * cosDelta; + lengthSum$1.add(atan2$1(sqrt$2(x * x + y * y), z)); + lambda0 = lambda, sinPhi0 = sinPhi, cosPhi0 = cosPhi; } -function centroidPointRing(x, y) { - var dx = x - x0$3, - dy = y - y0$3, - z = sqrt(dx * dx + dy * dy); +function length$1(object) { + lengthSum$1 = new Adder(); + geoStream(object, lengthStream$1); + return +lengthSum$1; +} - X1$1 += z * (x0$3 + x) / 2; - Y1$1 += z * (y0$3 + y) / 2; - Z1$1 += z; +var coordinates = [null, null], + object = {type: "LineString", coordinates: coordinates}; - z = y0$3 * x - x0$3 * y; - X2$1 += z * (x0$3 + x); - Y2$1 += z * (y0$3 + y); - Z2$1 += z * 3; - centroidPoint$1(x0$3 = x, y0$3 = y); +function distance(a, b) { + coordinates[0] = a; + coordinates[1] = b; + return length$1(object); } -function PathContext(context) { - this._context = context; -} +var containsObjectType = { + Feature: function(object, point) { + return containsGeometry(object.geometry, point); + }, + FeatureCollection: function(object, point) { + var features = object.features, i = -1, n = features.length; + while (++i < n) if (containsGeometry(features[i].geometry, point)) return true; + return false; + } +}; -PathContext.prototype = { - _radius: 4.5, - pointRadius: function(_) { - return this._radius = _, this; +var containsGeometryType = { + Sphere: function() { + return true; }, - polygonStart: function() { - this._line = 0; + Point: function(object, point) { + return containsPoint(object.coordinates, point); }, - polygonEnd: function() { - this._line = NaN; + MultiPoint: function(object, point) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) if (containsPoint(coordinates[i], point)) return true; + return false; }, - lineStart: function() { - this._point = 0; + LineString: function(object, point) { + return containsLine(object.coordinates, point); }, - lineEnd: function() { - if (this._line === 0) this._context.closePath(); - this._point = NaN; + MultiLineString: function(object, point) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) if (containsLine(coordinates[i], point)) return true; + return false; }, - point: function(x, y) { - switch (this._point) { - case 0: { - this._context.moveTo(x, y); - this._point = 1; - break; - } - case 1: { - this._context.lineTo(x, y); - break; - } - default: { - this._context.moveTo(x + this._radius, y); - this._context.arc(x, y, this._radius, 0, tau$3); - break; - } - } + Polygon: function(object, point) { + return containsPolygon(object.coordinates, point); + }, + MultiPolygon: function(object, point) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) if (containsPolygon(coordinates[i], point)) return true; + return false; }, - result: noop$2 + GeometryCollection: function(object, point) { + var geometries = object.geometries, i = -1, n = geometries.length; + while (++i < n) if (containsGeometry(geometries[i], point)) return true; + return false; + } }; -var lengthSum$1 = adder(), - lengthRing, - x00$2, - y00$2, - x0$4, - y0$4; +function containsGeometry(geometry, point) { + return geometry && containsGeometryType.hasOwnProperty(geometry.type) + ? containsGeometryType[geometry.type](geometry, point) + : false; +} -var lengthStream$1 = { - point: noop$2, - lineStart: function() { - lengthStream$1.point = lengthPointFirst$1; - }, - lineEnd: function() { - if (lengthRing) lengthPoint$1(x00$2, y00$2); - lengthStream$1.point = noop$2; - }, - polygonStart: function() { - lengthRing = true; - }, - polygonEnd: function() { - lengthRing = null; - }, - result: function() { - var length = +lengthSum$1; - lengthSum$1.reset(); - return length; +function containsPoint(coordinates, point) { + return distance(coordinates, point) === 0; +} + +function containsLine(coordinates, point) { + var ao, bo, ab; + for (var i = 0, n = coordinates.length; i < n; i++) { + bo = distance(coordinates[i], point); + if (bo === 0) return true; + if (i > 0) { + ab = distance(coordinates[i], coordinates[i - 1]); + if ( + ab > 0 && + ao <= ab && + bo <= ab && + (ao + bo - ab) * (1 - Math.pow((ao - bo) / ab, 2)) < epsilon2 * ab + ) + return true; + } + ao = bo; } -}; + return false; +} -function lengthPointFirst$1(x, y) { - lengthStream$1.point = lengthPoint$1; - x00$2 = x0$4 = x, y00$2 = y0$4 = y; +function containsPolygon(coordinates, point) { + return !!polygonContains(coordinates.map(ringRadians), pointRadians(point)); } -function lengthPoint$1(x, y) { - x0$4 -= x, y0$4 -= y; - lengthSum$1.add(sqrt(x0$4 * x0$4 + y0$4 * y0$4)); - x0$4 = x, y0$4 = y; +function ringRadians(ring) { + return ring = ring.map(pointRadians), ring.pop(), ring; } -function PathString() { - this._string = []; +function pointRadians(point) { + return [point[0] * radians, point[1] * radians]; } -PathString.prototype = { - _radius: 4.5, - _circle: circle$1(4.5), - pointRadius: function(_) { - if ((_ = +_) !== this._radius) this._radius = _, this._circle = null; - return this; - }, - polygonStart: function() { - this._line = 0; - }, - polygonEnd: function() { - this._line = NaN; - }, - lineStart: function() { - this._point = 0; - }, - lineEnd: function() { - if (this._line === 0) this._string.push("Z"); - this._point = NaN; - }, - point: function(x, y) { - switch (this._point) { - case 0: { - this._string.push("M", x, ",", y); - this._point = 1; - break; - } - case 1: { - this._string.push("L", x, ",", y); - break; - } - default: { - if (this._circle == null) this._circle = circle$1(this._radius); - this._string.push("M", x, ",", y, this._circle); - break; - } - } - }, - result: function() { - if (this._string.length) { - var result = this._string.join(""); - this._string = []; - return result; - } else { - return null; - } - } -}; +function contains$1(object, point) { + return (object && containsObjectType.hasOwnProperty(object.type) + ? containsObjectType[object.type] + : containsGeometry)(object, point); +} -function circle$1(radius) { - return "m0," + radius - + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius - + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius - + "z"; +function graticuleX(y0, y1, dy) { + var y = sequence(y0, y1 - epsilon$1, dy).concat(y1); + return function(x) { return y.map(function(y) { return [x, y]; }); }; } -function index$1(projection, context) { - var pointRadius = 4.5, - projectionStream, - contextStream; +function graticuleY(x0, x1, dx) { + var x = sequence(x0, x1 - epsilon$1, dx).concat(x1); + return function(y) { return x.map(function(x) { return [x, y]; }); }; +} - function path(object) { - if (object) { - if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments)); - geoStream(object, projectionStream(contextStream)); - } - return contextStream.result(); +function graticule() { + var x1, x0, X1, X0, + y1, y0, Y1, Y0, + dx = 10, dy = dx, DX = 90, DY = 360, + x, y, X, Y, + precision = 2.5; + + function graticule() { + return {type: "MultiLineString", coordinates: lines()}; } - path.area = function(object) { - geoStream(object, projectionStream(areaStream$1)); - return areaStream$1.result(); + function lines() { + return sequence(ceil(X0 / DX) * DX, X1, DX).map(X) + .concat(sequence(ceil(Y0 / DY) * DY, Y1, DY).map(Y)) + .concat(sequence(ceil(x0 / dx) * dx, x1, dx).filter(function(x) { return abs$1(x % DX) > epsilon$1; }).map(x)) + .concat(sequence(ceil(y0 / dy) * dy, y1, dy).filter(function(y) { return abs$1(y % DY) > epsilon$1; }).map(y)); + } + + graticule.lines = function() { + return lines().map(function(coordinates) { return {type: "LineString", coordinates: coordinates}; }); }; - path.measure = function(object) { - geoStream(object, projectionStream(lengthStream$1)); - return lengthStream$1.result(); + graticule.outline = function() { + return { + type: "Polygon", + coordinates: [ + X(X0).concat( + Y(Y1).slice(1), + X(X1).reverse().slice(1), + Y(Y0).reverse().slice(1)) + ] + }; }; - path.bounds = function(object) { - geoStream(object, projectionStream(boundsStream$1)); - return boundsStream$1.result(); + graticule.extent = function(_) { + if (!arguments.length) return graticule.extentMinor(); + return graticule.extentMajor(_).extentMinor(_); }; - path.centroid = function(object) { - geoStream(object, projectionStream(centroidStream$1)); - return centroidStream$1.result(); + graticule.extentMajor = function(_) { + if (!arguments.length) return [[X0, Y0], [X1, Y1]]; + X0 = +_[0][0], X1 = +_[1][0]; + Y0 = +_[0][1], Y1 = +_[1][1]; + if (X0 > X1) _ = X0, X0 = X1, X1 = _; + if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _; + return graticule.precision(precision); }; - path.projection = function(_) { - return arguments.length ? (projectionStream = _ == null ? (projection = null, identity$4) : (projection = _).stream, path) : projection; + graticule.extentMinor = function(_) { + if (!arguments.length) return [[x0, y0], [x1, y1]]; + x0 = +_[0][0], x1 = +_[1][0]; + y0 = +_[0][1], y1 = +_[1][1]; + if (x0 > x1) _ = x0, x0 = x1, x1 = _; + if (y0 > y1) _ = y0, y0 = y1, y1 = _; + return graticule.precision(precision); }; - path.context = function(_) { - if (!arguments.length) return context; - contextStream = _ == null ? (context = null, new PathString) : new PathContext(context = _); - if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius); - return path; + graticule.step = function(_) { + if (!arguments.length) return graticule.stepMinor(); + return graticule.stepMajor(_).stepMinor(_); }; - path.pointRadius = function(_) { - if (!arguments.length) return pointRadius; - pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_); - return path; + graticule.stepMajor = function(_) { + if (!arguments.length) return [DX, DY]; + DX = +_[0], DY = +_[1]; + return graticule; }; - return path.projection(projection).context(context); -} + graticule.stepMinor = function(_) { + if (!arguments.length) return [dx, dy]; + dx = +_[0], dy = +_[1]; + return graticule; + }; -function transform(methods) { - return { - stream: transformer(methods) + graticule.precision = function(_) { + if (!arguments.length) return precision; + precision = +_; + x = graticuleX(y0, y1, 90); + y = graticuleY(x0, x1, precision); + X = graticuleX(Y0, Y1, 90); + Y = graticuleY(X0, X1, precision); + return graticule; }; + + return graticule + .extentMajor([[-180, -90 + epsilon$1], [180, 90 - epsilon$1]]) + .extentMinor([[-180, -80 - epsilon$1], [180, 80 + epsilon$1]]); } -function transformer(methods) { - return function(stream) { - var s = new TransformStream; - for (var key in methods) s[key] = methods[key]; - s.stream = stream; - return s; - }; +function graticule10() { + return graticule()(); } -function TransformStream() {} +function interpolate(a, b) { + var x0 = a[0] * radians, + y0 = a[1] * radians, + x1 = b[0] * radians, + y1 = b[1] * radians, + cy0 = cos$1(y0), + sy0 = sin$1(y0), + cy1 = cos$1(y1), + sy1 = sin$1(y1), + kx0 = cy0 * cos$1(x0), + ky0 = cy0 * sin$1(x0), + kx1 = cy1 * cos$1(x1), + ky1 = cy1 * sin$1(x1), + d = 2 * asin$1(sqrt$2(haversin(y1 - y0) + cy0 * cy1 * haversin(x1 - x0))), + k = sin$1(d); -TransformStream.prototype = { - constructor: TransformStream, - point: function(x, y) { this.stream.point(x, y); }, - sphere: function() { this.stream.sphere(); }, - lineStart: function() { this.stream.lineStart(); }, - lineEnd: function() { this.stream.lineEnd(); }, - polygonStart: function() { this.stream.polygonStart(); }, - polygonEnd: function() { this.stream.polygonEnd(); } -}; + var interpolate = d ? function(t) { + var B = sin$1(t *= d) / k, + A = sin$1(d - t) / k, + x = A * kx0 + B * kx1, + y = A * ky0 + B * ky1, + z = A * sy0 + B * sy1; + return [ + atan2$1(y, x) * degrees, + atan2$1(z, sqrt$2(x * x + y * y)) * degrees + ]; + } : function() { + return [x0 * degrees, y0 * degrees]; + }; -function fit(projection, fitBounds, object) { - var clip = projection.clipExtent && projection.clipExtent(); - projection.scale(150).translate([0, 0]); - if (clip != null) projection.clipExtent(null); - geoStream(object, projection.stream(boundsStream$1)); - fitBounds(boundsStream$1.result()); - if (clip != null) projection.clipExtent(clip); - return projection; -} + interpolate.distance = d; -function fitExtent(projection, extent, object) { - return fit(projection, function(b) { - var w = extent[1][0] - extent[0][0], - h = extent[1][1] - extent[0][1], - k = Math.min(w / (b[1][0] - b[0][0]), h / (b[1][1] - b[0][1])), - x = +extent[0][0] + (w - k * (b[1][0] + b[0][0])) / 2, - y = +extent[0][1] + (h - k * (b[1][1] + b[0][1])) / 2; - projection.scale(150 * k).translate([x, y]); - }, object); + return interpolate; } -function fitSize(projection, size, object) { - return fitExtent(projection, [[0, 0], size], object); -} +var identity$5 = x => x; -function fitWidth(projection, width, object) { - return fit(projection, function(b) { - var w = +width, - k = w / (b[1][0] - b[0][0]), - x = (w - k * (b[1][0] + b[0][0])) / 2, - y = -k * b[0][1]; - projection.scale(150 * k).translate([x, y]); - }, object); +var areaSum = new Adder(), + areaRingSum = new Adder(), + x00$2, + y00$2, + x0$3, + y0$3; + +var areaStream = { + point: noop$1, + lineStart: noop$1, + lineEnd: noop$1, + polygonStart: function() { + areaStream.lineStart = areaRingStart; + areaStream.lineEnd = areaRingEnd; + }, + polygonEnd: function() { + areaStream.lineStart = areaStream.lineEnd = areaStream.point = noop$1; + areaSum.add(abs$1(areaRingSum)); + areaRingSum = new Adder(); + }, + result: function() { + var area = areaSum / 2; + areaSum = new Adder(); + return area; + } +}; + +function areaRingStart() { + areaStream.point = areaPointFirst; } -function fitHeight(projection, height, object) { - return fit(projection, function(b) { - var h = +height, - k = h / (b[1][1] - b[0][1]), - x = -k * b[0][0], - y = (h - k * (b[1][1] + b[0][1])) / 2; - projection.scale(150 * k).translate([x, y]); - }, object); +function areaPointFirst(x, y) { + areaStream.point = areaPoint; + x00$2 = x0$3 = x, y00$2 = y0$3 = y; } -var maxDepth = 16, // maximum depth of subdivision - cosMinDistance = cos$1(30 * radians); // cos(minimum angular distance) +function areaPoint(x, y) { + areaRingSum.add(y0$3 * x - x0$3 * y); + x0$3 = x, y0$3 = y; +} -function resample(project, delta2) { - return +delta2 ? resample$1(project, delta2) : resampleNone(project); +function areaRingEnd() { + areaPoint(x00$2, y00$2); } -function resampleNone(project) { - return transformer({ - point: function(x, y) { - x = project(x, y); - this.stream.point(x[0], x[1]); - } - }); -} - -function resample$1(project, delta2) { +var x0$2 = Infinity, + y0$2 = x0$2, + x1 = -x0$2, + y1 = x1; - function resampleLineTo(x0, y0, lambda0, a0, b0, c0, x1, y1, lambda1, a1, b1, c1, depth, stream) { - var dx = x1 - x0, - dy = y1 - y0, - d2 = dx * dx + dy * dy; - if (d2 > 4 * delta2 && depth--) { - var a = a0 + a1, - b = b0 + b1, - c = c0 + c1, - m = sqrt(a * a + b * b + c * c), - phi2 = asin(c /= m), - lambda2 = abs(abs(c) - 1) < epsilon$2 || abs(lambda0 - lambda1) < epsilon$2 ? (lambda0 + lambda1) / 2 : atan2(b, a), - p = project(lambda2, phi2), - x2 = p[0], - y2 = p[1], - dx2 = x2 - x0, - dy2 = y2 - y0, - dz = dy * dx2 - dx * dy2; - if (dz * dz / d2 > delta2 // perpendicular projected distance - || abs((dx * dx2 + dy * dy2) / d2 - 0.5) > 0.3 // midpoint close to an end - || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) { // angular distance - resampleLineTo(x0, y0, lambda0, a0, b0, c0, x2, y2, lambda2, a /= m, b /= m, c, depth, stream); - stream.point(x2, y2); - resampleLineTo(x2, y2, lambda2, a, b, c, x1, y1, lambda1, a1, b1, c1, depth, stream); - } - } +var boundsStream = { + point: boundsPoint, + lineStart: noop$1, + lineEnd: noop$1, + polygonStart: noop$1, + polygonEnd: noop$1, + result: function() { + var bounds = [[x0$2, y0$2], [x1, y1]]; + x1 = y1 = -(y0$2 = x0$2 = Infinity); + return bounds; } - return function(stream) { - var lambda00, x00, y00, a00, b00, c00, // first point - lambda0, x0, y0, a0, b0, c0; // previous point +}; - var resampleStream = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, - polygonStart: function() { stream.polygonStart(); resampleStream.lineStart = ringStart; }, - polygonEnd: function() { stream.polygonEnd(); resampleStream.lineStart = lineStart; } - }; +function boundsPoint(x, y) { + if (x < x0$2) x0$2 = x; + if (x > x1) x1 = x; + if (y < y0$2) y0$2 = y; + if (y > y1) y1 = y; +} - function point(x, y) { - x = project(x, y); - stream.point(x[0], x[1]); - } +// TODO Enforce positive area for exterior, negative area for interior? - function lineStart() { - x0 = NaN; - resampleStream.point = linePoint; - stream.lineStart(); - } +var X0 = 0, + Y0 = 0, + Z0 = 0, + X1 = 0, + Y1 = 0, + Z1 = 0, + X2 = 0, + Y2 = 0, + Z2 = 0, + x00$1, + y00$1, + x0$1, + y0$1; - function linePoint(lambda, phi) { - var c = cartesian([lambda, phi]), p = project(lambda, phi); - resampleLineTo(x0, y0, lambda0, a0, b0, c0, x0 = p[0], y0 = p[1], lambda0 = lambda, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream); - stream.point(x0, y0); - } +var centroidStream = { + point: centroidPoint, + lineStart: centroidLineStart, + lineEnd: centroidLineEnd, + polygonStart: function() { + centroidStream.lineStart = centroidRingStart; + centroidStream.lineEnd = centroidRingEnd; + }, + polygonEnd: function() { + centroidStream.point = centroidPoint; + centroidStream.lineStart = centroidLineStart; + centroidStream.lineEnd = centroidLineEnd; + }, + result: function() { + var centroid = Z2 ? [X2 / Z2, Y2 / Z2] + : Z1 ? [X1 / Z1, Y1 / Z1] + : Z0 ? [X0 / Z0, Y0 / Z0] + : [NaN, NaN]; + X0 = Y0 = Z0 = + X1 = Y1 = Z1 = + X2 = Y2 = Z2 = 0; + return centroid; + } +}; - function lineEnd() { - resampleStream.point = point; - stream.lineEnd(); - } +function centroidPoint(x, y) { + X0 += x; + Y0 += y; + ++Z0; +} - function ringStart() { - lineStart(); - resampleStream.point = ringPoint; - resampleStream.lineEnd = ringEnd; - } +function centroidLineStart() { + centroidStream.point = centroidPointFirstLine; +} - function ringPoint(lambda, phi) { - linePoint(lambda00 = lambda, phi), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0; - resampleStream.point = linePoint; - } +function centroidPointFirstLine(x, y) { + centroidStream.point = centroidPointLine; + centroidPoint(x0$1 = x, y0$1 = y); +} - function ringEnd() { - resampleLineTo(x0, y0, lambda0, a0, b0, c0, x00, y00, lambda00, a00, b00, c00, maxDepth, stream); - resampleStream.lineEnd = lineEnd; - lineEnd(); - } +function centroidPointLine(x, y) { + var dx = x - x0$1, dy = y - y0$1, z = sqrt$2(dx * dx + dy * dy); + X1 += z * (x0$1 + x) / 2; + Y1 += z * (y0$1 + y) / 2; + Z1 += z; + centroidPoint(x0$1 = x, y0$1 = y); +} - return resampleStream; - }; +function centroidLineEnd() { + centroidStream.point = centroidPoint; } -var transformRadians = transformer({ - point: function(x, y) { - this.stream.point(x * radians, y * radians); - } -}); +function centroidRingStart() { + centroidStream.point = centroidPointFirstRing; +} -function transformRotate(rotate) { - return transformer({ - point: function(x, y) { - var r = rotate(x, y); - return this.stream.point(r[0], r[1]); - } - }); +function centroidRingEnd() { + centroidPointRing(x00$1, y00$1); } -function scaleTranslate(k, dx, dy, sx, sy) { - function transform(x, y) { - x *= sx; y *= sy; - return [dx + k * x, dy - k * y]; - } - transform.invert = function(x, y) { - return [(x - dx) / k * sx, (dy - y) / k * sy]; - }; - return transform; +function centroidPointFirstRing(x, y) { + centroidStream.point = centroidPointRing; + centroidPoint(x00$1 = x0$1 = x, y00$1 = y0$1 = y); } -function scaleTranslateRotate(k, dx, dy, sx, sy, alpha) { - var cosAlpha = cos$1(alpha), - sinAlpha = sin$1(alpha), - a = cosAlpha * k, - b = sinAlpha * k, - ai = cosAlpha / k, - bi = sinAlpha / k, - ci = (sinAlpha * dy - cosAlpha * dx) / k, - fi = (sinAlpha * dx + cosAlpha * dy) / k; - function transform(x, y) { - x *= sx; y *= sy; - return [a * x - b * y + dx, dy - b * x - a * y]; - } - transform.invert = function(x, y) { - return [sx * (ai * x - bi * y + ci), sy * (fi - bi * x - ai * y)]; - }; - return transform; +function centroidPointRing(x, y) { + var dx = x - x0$1, + dy = y - y0$1, + z = sqrt$2(dx * dx + dy * dy); + + X1 += z * (x0$1 + x) / 2; + Y1 += z * (y0$1 + y) / 2; + Z1 += z; + + z = y0$1 * x - x0$1 * y; + X2 += z * (x0$1 + x); + Y2 += z * (y0$1 + y); + Z2 += z * 3; + centroidPoint(x0$1 = x, y0$1 = y); } -function projection(project) { - return projectionMutator(function() { return project; })(); +function PathContext(context) { + this._context = context; } -function projectionMutator(projectAt) { - var project, - k = 150, // scale - x = 480, y = 250, // translate - lambda = 0, phi = 0, // center - deltaLambda = 0, deltaPhi = 0, deltaGamma = 0, rotate, // pre-rotate - alpha = 0, // post-rotate angle - sx = 1, // reflectX - sy = 1, // reflectX - theta = null, preclip = clipAntimeridian, // pre-clip angle - x0 = null, y0, x1, y1, postclip = identity$4, // post-clip extent - delta2 = 0.5, // precision - projectResample, - projectTransform, - projectRotateTransform, - cache, - cacheStream; +PathContext.prototype = { + _radius: 4.5, + pointRadius: function(_) { + return this._radius = _, this; + }, + polygonStart: function() { + this._line = 0; + }, + polygonEnd: function() { + this._line = NaN; + }, + lineStart: function() { + this._point = 0; + }, + lineEnd: function() { + if (this._line === 0) this._context.closePath(); + this._point = NaN; + }, + point: function(x, y) { + switch (this._point) { + case 0: { + this._context.moveTo(x, y); + this._point = 1; + break; + } + case 1: { + this._context.lineTo(x, y); + break; + } + default: { + this._context.moveTo(x + this._radius, y); + this._context.arc(x, y, this._radius, 0, tau$1); + break; + } + } + }, + result: noop$1 +}; - function projection(point) { - return projectRotateTransform(point[0] * radians, point[1] * radians); - } +var lengthSum = new Adder(), + lengthRing, + x00, + y00, + x0, + y0; - function invert(point) { - point = projectRotateTransform.invert(point[0], point[1]); - return point && [point[0] * degrees$1, point[1] * degrees$1]; +var lengthStream = { + point: noop$1, + lineStart: function() { + lengthStream.point = lengthPointFirst; + }, + lineEnd: function() { + if (lengthRing) lengthPoint(x00, y00); + lengthStream.point = noop$1; + }, + polygonStart: function() { + lengthRing = true; + }, + polygonEnd: function() { + lengthRing = null; + }, + result: function() { + var length = +lengthSum; + lengthSum = new Adder(); + return length; } +}; - projection.stream = function(stream) { - return cache && cacheStream === stream ? cache : cache = transformRadians(transformRotate(rotate)(preclip(projectResample(postclip(cacheStream = stream))))); - }; +function lengthPointFirst(x, y) { + lengthStream.point = lengthPoint; + x00 = x0 = x, y00 = y0 = y; +} - projection.preclip = function(_) { - return arguments.length ? (preclip = _, theta = undefined, reset()) : preclip; - }; +function lengthPoint(x, y) { + x0 -= x, y0 -= y; + lengthSum.add(sqrt$2(x0 * x0 + y0 * y0)); + x0 = x, y0 = y; +} - projection.postclip = function(_) { - return arguments.length ? (postclip = _, x0 = y0 = x1 = y1 = null, reset()) : postclip; - }; +function PathString() { + this._string = []; +} - projection.clipAngle = function(_) { - return arguments.length ? (preclip = +_ ? clipCircle(theta = _ * radians) : (theta = null, clipAntimeridian), reset()) : theta * degrees$1; - }; +PathString.prototype = { + _radius: 4.5, + _circle: circle$1(4.5), + pointRadius: function(_) { + if ((_ = +_) !== this._radius) this._radius = _, this._circle = null; + return this; + }, + polygonStart: function() { + this._line = 0; + }, + polygonEnd: function() { + this._line = NaN; + }, + lineStart: function() { + this._point = 0; + }, + lineEnd: function() { + if (this._line === 0) this._string.push("Z"); + this._point = NaN; + }, + point: function(x, y) { + switch (this._point) { + case 0: { + this._string.push("M", x, ",", y); + this._point = 1; + break; + } + case 1: { + this._string.push("L", x, ",", y); + break; + } + default: { + if (this._circle == null) this._circle = circle$1(this._radius); + this._string.push("M", x, ",", y, this._circle); + break; + } + } + }, + result: function() { + if (this._string.length) { + var result = this._string.join(""); + this._string = []; + return result; + } else { + return null; + } + } +}; - projection.clipExtent = function(_) { - return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$4) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]]; - }; +function circle$1(radius) { + return "m0," + radius + + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + + "z"; +} - projection.scale = function(_) { - return arguments.length ? (k = +_, recenter()) : k; - }; +function index$2(projection, context) { + var pointRadius = 4.5, + projectionStream, + contextStream; - projection.translate = function(_) { - return arguments.length ? (x = +_[0], y = +_[1], recenter()) : [x, y]; - }; + function path(object) { + if (object) { + if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments)); + geoStream(object, projectionStream(contextStream)); + } + return contextStream.result(); + } - projection.center = function(_) { - return arguments.length ? (lambda = _[0] % 360 * radians, phi = _[1] % 360 * radians, recenter()) : [lambda * degrees$1, phi * degrees$1]; + path.area = function(object) { + geoStream(object, projectionStream(areaStream)); + return areaStream.result(); }; - projection.rotate = function(_) { - return arguments.length ? (deltaLambda = _[0] % 360 * radians, deltaPhi = _[1] % 360 * radians, deltaGamma = _.length > 2 ? _[2] % 360 * radians : 0, recenter()) : [deltaLambda * degrees$1, deltaPhi * degrees$1, deltaGamma * degrees$1]; + path.measure = function(object) { + geoStream(object, projectionStream(lengthStream)); + return lengthStream.result(); }; - projection.angle = function(_) { - return arguments.length ? (alpha = _ % 360 * radians, recenter()) : alpha * degrees$1; + path.bounds = function(object) { + geoStream(object, projectionStream(boundsStream)); + return boundsStream.result(); }; - projection.reflectX = function(_) { - return arguments.length ? (sx = _ ? -1 : 1, recenter()) : sx < 0; + path.centroid = function(object) { + geoStream(object, projectionStream(centroidStream)); + return centroidStream.result(); }; - projection.reflectY = function(_) { - return arguments.length ? (sy = _ ? -1 : 1, recenter()) : sy < 0; + path.projection = function(_) { + return arguments.length ? (projectionStream = _ == null ? (projection = null, identity$5) : (projection = _).stream, path) : projection; }; - projection.precision = function(_) { - return arguments.length ? (projectResample = resample(projectTransform, delta2 = _ * _), reset()) : sqrt(delta2); + path.context = function(_) { + if (!arguments.length) return context; + contextStream = _ == null ? (context = null, new PathString) : new PathContext(context = _); + if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius); + return path; }; - projection.fitExtent = function(extent, object) { - return fitExtent(projection, extent, object); + path.pointRadius = function(_) { + if (!arguments.length) return pointRadius; + pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_); + return path; }; - projection.fitSize = function(size, object) { - return fitSize(projection, size, object); - }; + return path.projection(projection).context(context); +} - projection.fitWidth = function(width, object) { - return fitWidth(projection, width, object); +function transform$1(methods) { + return { + stream: transformer$3(methods) }; +} - projection.fitHeight = function(height, object) { - return fitHeight(projection, height, object); +function transformer$3(methods) { + return function(stream) { + var s = new TransformStream; + for (var key in methods) s[key] = methods[key]; + s.stream = stream; + return s; }; +} - function recenter() { - var center = scaleTranslateRotate(k, 0, 0, sx, sy, alpha).apply(null, project(lambda, phi)), - transform = (alpha ? scaleTranslateRotate : scaleTranslate)(k, x - center[0], y - center[1], sx, sy, alpha); - rotate = rotateRadians(deltaLambda, deltaPhi, deltaGamma); - projectTransform = compose(project, transform); - projectRotateTransform = compose(rotate, projectTransform); - projectResample = resample(projectTransform, delta2); - return reset(); - } +function TransformStream() {} - function reset() { - cache = cacheStream = null; - return projection; - } +TransformStream.prototype = { + constructor: TransformStream, + point: function(x, y) { this.stream.point(x, y); }, + sphere: function() { this.stream.sphere(); }, + lineStart: function() { this.stream.lineStart(); }, + lineEnd: function() { this.stream.lineEnd(); }, + polygonStart: function() { this.stream.polygonStart(); }, + polygonEnd: function() { this.stream.polygonEnd(); } +}; - return function() { - project = projectAt.apply(this, arguments); - projection.invert = project.invert && invert; - return recenter(); - }; +function fit(projection, fitBounds, object) { + var clip = projection.clipExtent && projection.clipExtent(); + projection.scale(150).translate([0, 0]); + if (clip != null) projection.clipExtent(null); + geoStream(object, projection.stream(boundsStream)); + fitBounds(boundsStream.result()); + if (clip != null) projection.clipExtent(clip); + return projection; } -function conicProjection(projectAt) { - var phi0 = 0, - phi1 = pi$3 / 3, - m = projectionMutator(projectAt), - p = m(phi0, phi1); - - p.parallels = function(_) { - return arguments.length ? m(phi0 = _[0] * radians, phi1 = _[1] * radians) : [phi0 * degrees$1, phi1 * degrees$1]; - }; +function fitExtent(projection, extent, object) { + return fit(projection, function(b) { + var w = extent[1][0] - extent[0][0], + h = extent[1][1] - extent[0][1], + k = Math.min(w / (b[1][0] - b[0][0]), h / (b[1][1] - b[0][1])), + x = +extent[0][0] + (w - k * (b[1][0] + b[0][0])) / 2, + y = +extent[0][1] + (h - k * (b[1][1] + b[0][1])) / 2; + projection.scale(150 * k).translate([x, y]); + }, object); +} - return p; +function fitSize(projection, size, object) { + return fitExtent(projection, [[0, 0], size], object); } -function cylindricalEqualAreaRaw(phi0) { - var cosPhi0 = cos$1(phi0); +function fitWidth(projection, width, object) { + return fit(projection, function(b) { + var w = +width, + k = w / (b[1][0] - b[0][0]), + x = (w - k * (b[1][0] + b[0][0])) / 2, + y = -k * b[0][1]; + projection.scale(150 * k).translate([x, y]); + }, object); +} - function forward(lambda, phi) { - return [lambda * cosPhi0, sin$1(phi) / cosPhi0]; - } +function fitHeight(projection, height, object) { + return fit(projection, function(b) { + var h = +height, + k = h / (b[1][1] - b[0][1]), + x = -k * b[0][0], + y = (h - k * (b[1][1] + b[0][1])) / 2; + projection.scale(150 * k).translate([x, y]); + }, object); +} - forward.invert = function(x, y) { - return [x / cosPhi0, asin(y * cosPhi0)]; - }; +var maxDepth = 16, // maximum depth of subdivision + cosMinDistance = cos$1(30 * radians); // cos(minimum angular distance) - return forward; +function resample(project, delta2) { + return +delta2 ? resample$1(project, delta2) : resampleNone(project); } -function conicEqualAreaRaw(y0, y1) { - var sy0 = sin$1(y0), n = (sy0 + sin$1(y1)) / 2; - - // Are the parallels symmetrical around the Equator? - if (abs(n) < epsilon$2) return cylindricalEqualAreaRaw(y0); +function resampleNone(project) { + return transformer$3({ + point: function(x, y) { + x = project(x, y); + this.stream.point(x[0], x[1]); + } + }); +} - var c = 1 + sy0 * (2 * n - sy0), r0 = sqrt(c) / n; +function resample$1(project, delta2) { - function project(x, y) { - var r = sqrt(c - 2 * n * sin$1(y)) / n; - return [r * sin$1(x *= n), r0 - r * cos$1(x)]; + function resampleLineTo(x0, y0, lambda0, a0, b0, c0, x1, y1, lambda1, a1, b1, c1, depth, stream) { + var dx = x1 - x0, + dy = y1 - y0, + d2 = dx * dx + dy * dy; + if (d2 > 4 * delta2 && depth--) { + var a = a0 + a1, + b = b0 + b1, + c = c0 + c1, + m = sqrt$2(a * a + b * b + c * c), + phi2 = asin$1(c /= m), + lambda2 = abs$1(abs$1(c) - 1) < epsilon$1 || abs$1(lambda0 - lambda1) < epsilon$1 ? (lambda0 + lambda1) / 2 : atan2$1(b, a), + p = project(lambda2, phi2), + x2 = p[0], + y2 = p[1], + dx2 = x2 - x0, + dy2 = y2 - y0, + dz = dy * dx2 - dx * dy2; + if (dz * dz / d2 > delta2 // perpendicular projected distance + || abs$1((dx * dx2 + dy * dy2) / d2 - 0.5) > 0.3 // midpoint close to an end + || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) { // angular distance + resampleLineTo(x0, y0, lambda0, a0, b0, c0, x2, y2, lambda2, a /= m, b /= m, c, depth, stream); + stream.point(x2, y2); + resampleLineTo(x2, y2, lambda2, a, b, c, x1, y1, lambda1, a1, b1, c1, depth, stream); + } + } } + return function(stream) { + var lambda00, x00, y00, a00, b00, c00, // first point + lambda0, x0, y0, a0, b0, c0; // previous point - project.invert = function(x, y) { - var r0y = r0 - y, - l = atan2(x, abs(r0y)) * sign(r0y); - if (r0y * n < 0) - l -= pi$3 * sign(x) * sign(r0y); - return [l / n, asin((c - (x * x + r0y * r0y) * n * n) / (2 * n))]; - }; + var resampleStream = { + point: point, + lineStart: lineStart, + lineEnd: lineEnd, + polygonStart: function() { stream.polygonStart(); resampleStream.lineStart = ringStart; }, + polygonEnd: function() { stream.polygonEnd(); resampleStream.lineStart = lineStart; } + }; - return project; -} + function point(x, y) { + x = project(x, y); + stream.point(x[0], x[1]); + } -function conicEqualArea() { - return conicProjection(conicEqualAreaRaw) - .scale(155.424) - .center([0, 33.6442]); -} + function lineStart() { + x0 = NaN; + resampleStream.point = linePoint; + stream.lineStart(); + } + + function linePoint(lambda, phi) { + var c = cartesian([lambda, phi]), p = project(lambda, phi); + resampleLineTo(x0, y0, lambda0, a0, b0, c0, x0 = p[0], y0 = p[1], lambda0 = lambda, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream); + stream.point(x0, y0); + } + + function lineEnd() { + resampleStream.point = point; + stream.lineEnd(); + } + + function ringStart() { + lineStart(); + resampleStream.point = ringPoint; + resampleStream.lineEnd = ringEnd; + } + + function ringPoint(lambda, phi) { + linePoint(lambda00 = lambda, phi), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0; + resampleStream.point = linePoint; + } + + function ringEnd() { + resampleLineTo(x0, y0, lambda0, a0, b0, c0, x00, y00, lambda00, a00, b00, c00, maxDepth, stream); + resampleStream.lineEnd = lineEnd; + lineEnd(); + } + + return resampleStream; + }; +} + +var transformRadians = transformer$3({ + point: function(x, y) { + this.stream.point(x * radians, y * radians); + } +}); + +function transformRotate(rotate) { + return transformer$3({ + point: function(x, y) { + var r = rotate(x, y); + return this.stream.point(r[0], r[1]); + } + }); +} + +function scaleTranslate(k, dx, dy, sx, sy) { + function transform(x, y) { + x *= sx; y *= sy; + return [dx + k * x, dy - k * y]; + } + transform.invert = function(x, y) { + return [(x - dx) / k * sx, (dy - y) / k * sy]; + }; + return transform; +} + +function scaleTranslateRotate(k, dx, dy, sx, sy, alpha) { + if (!alpha) return scaleTranslate(k, dx, dy, sx, sy); + var cosAlpha = cos$1(alpha), + sinAlpha = sin$1(alpha), + a = cosAlpha * k, + b = sinAlpha * k, + ai = cosAlpha / k, + bi = sinAlpha / k, + ci = (sinAlpha * dy - cosAlpha * dx) / k, + fi = (sinAlpha * dx + cosAlpha * dy) / k; + function transform(x, y) { + x *= sx; y *= sy; + return [a * x - b * y + dx, dy - b * x - a * y]; + } + transform.invert = function(x, y) { + return [sx * (ai * x - bi * y + ci), sy * (fi - bi * x - ai * y)]; + }; + return transform; +} + +function projection(project) { + return projectionMutator(function() { return project; })(); +} + +function projectionMutator(projectAt) { + var project, + k = 150, // scale + x = 480, y = 250, // translate + lambda = 0, phi = 0, // center + deltaLambda = 0, deltaPhi = 0, deltaGamma = 0, rotate, // pre-rotate + alpha = 0, // post-rotate angle + sx = 1, // reflectX + sy = 1, // reflectX + theta = null, preclip = clipAntimeridian, // pre-clip angle + x0 = null, y0, x1, y1, postclip = identity$5, // post-clip extent + delta2 = 0.5, // precision + projectResample, + projectTransform, + projectRotateTransform, + cache, + cacheStream; + + function projection(point) { + return projectRotateTransform(point[0] * radians, point[1] * radians); + } + + function invert(point) { + point = projectRotateTransform.invert(point[0], point[1]); + return point && [point[0] * degrees, point[1] * degrees]; + } + + projection.stream = function(stream) { + return cache && cacheStream === stream ? cache : cache = transformRadians(transformRotate(rotate)(preclip(projectResample(postclip(cacheStream = stream))))); + }; + + projection.preclip = function(_) { + return arguments.length ? (preclip = _, theta = undefined, reset()) : preclip; + }; + + projection.postclip = function(_) { + return arguments.length ? (postclip = _, x0 = y0 = x1 = y1 = null, reset()) : postclip; + }; + + projection.clipAngle = function(_) { + return arguments.length ? (preclip = +_ ? clipCircle(theta = _ * radians) : (theta = null, clipAntimeridian), reset()) : theta * degrees; + }; + + projection.clipExtent = function(_) { + return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$5) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]]; + }; + + projection.scale = function(_) { + return arguments.length ? (k = +_, recenter()) : k; + }; + + projection.translate = function(_) { + return arguments.length ? (x = +_[0], y = +_[1], recenter()) : [x, y]; + }; + + projection.center = function(_) { + return arguments.length ? (lambda = _[0] % 360 * radians, phi = _[1] % 360 * radians, recenter()) : [lambda * degrees, phi * degrees]; + }; + + projection.rotate = function(_) { + return arguments.length ? (deltaLambda = _[0] % 360 * radians, deltaPhi = _[1] % 360 * radians, deltaGamma = _.length > 2 ? _[2] % 360 * radians : 0, recenter()) : [deltaLambda * degrees, deltaPhi * degrees, deltaGamma * degrees]; + }; + + projection.angle = function(_) { + return arguments.length ? (alpha = _ % 360 * radians, recenter()) : alpha * degrees; + }; + + projection.reflectX = function(_) { + return arguments.length ? (sx = _ ? -1 : 1, recenter()) : sx < 0; + }; + + projection.reflectY = function(_) { + return arguments.length ? (sy = _ ? -1 : 1, recenter()) : sy < 0; + }; + + projection.precision = function(_) { + return arguments.length ? (projectResample = resample(projectTransform, delta2 = _ * _), reset()) : sqrt$2(delta2); + }; + + projection.fitExtent = function(extent, object) { + return fitExtent(projection, extent, object); + }; + + projection.fitSize = function(size, object) { + return fitSize(projection, size, object); + }; + + projection.fitWidth = function(width, object) { + return fitWidth(projection, width, object); + }; + + projection.fitHeight = function(height, object) { + return fitHeight(projection, height, object); + }; + + function recenter() { + var center = scaleTranslateRotate(k, 0, 0, sx, sy, alpha).apply(null, project(lambda, phi)), + transform = scaleTranslateRotate(k, x - center[0], y - center[1], sx, sy, alpha); + rotate = rotateRadians(deltaLambda, deltaPhi, deltaGamma); + projectTransform = compose(project, transform); + projectRotateTransform = compose(rotate, projectTransform); + projectResample = resample(projectTransform, delta2); + return reset(); + } + + function reset() { + cache = cacheStream = null; + return projection; + } + + return function() { + project = projectAt.apply(this, arguments); + projection.invert = project.invert && invert; + return recenter(); + }; +} + +function conicProjection(projectAt) { + var phi0 = 0, + phi1 = pi$1 / 3, + m = projectionMutator(projectAt), + p = m(phi0, phi1); + + p.parallels = function(_) { + return arguments.length ? m(phi0 = _[0] * radians, phi1 = _[1] * radians) : [phi0 * degrees, phi1 * degrees]; + }; + + return p; +} + +function cylindricalEqualAreaRaw(phi0) { + var cosPhi0 = cos$1(phi0); + + function forward(lambda, phi) { + return [lambda * cosPhi0, sin$1(phi) / cosPhi0]; + } + + forward.invert = function(x, y) { + return [x / cosPhi0, asin$1(y * cosPhi0)]; + }; + + return forward; +} + +function conicEqualAreaRaw(y0, y1) { + var sy0 = sin$1(y0), n = (sy0 + sin$1(y1)) / 2; + + // Are the parallels symmetrical around the Equator? + if (abs$1(n) < epsilon$1) return cylindricalEqualAreaRaw(y0); + + var c = 1 + sy0 * (2 * n - sy0), r0 = sqrt$2(c) / n; + + function project(x, y) { + var r = sqrt$2(c - 2 * n * sin$1(y)) / n; + return [r * sin$1(x *= n), r0 - r * cos$1(x)]; + } + + project.invert = function(x, y) { + var r0y = r0 - y, + l = atan2$1(x, abs$1(r0y)) * sign$1(r0y); + if (r0y * n < 0) + l -= pi$1 * sign$1(x) * sign$1(r0y); + return [l / n, asin$1((c - (x * x + r0y * r0y) * n * n) / (2 * n))]; + }; + + return project; +} + +function conicEqualArea() { + return conicProjection(conicEqualAreaRaw) + .scale(155.424) + .center([0, 33.6442]); +} function albers() { return conicEqualArea() @@ -10244,12 +11846,12 @@ function albersUsa() { alaskaPoint = alaska .translate([x - 0.307 * k, y + 0.201 * k]) - .clipExtent([[x - 0.425 * k + epsilon$2, y + 0.120 * k + epsilon$2], [x - 0.214 * k - epsilon$2, y + 0.234 * k - epsilon$2]]) + .clipExtent([[x - 0.425 * k + epsilon$1, y + 0.120 * k + epsilon$1], [x - 0.214 * k - epsilon$1, y + 0.234 * k - epsilon$1]]) .stream(pointStream); hawaiiPoint = hawaii .translate([x - 0.205 * k, y + 0.212 * k]) - .clipExtent([[x - 0.214 * k + epsilon$2, y + 0.166 * k + epsilon$2], [x - 0.115 * k - epsilon$2, y + 0.234 * k - epsilon$2]]) + .clipExtent([[x - 0.214 * k + epsilon$1, y + 0.166 * k + epsilon$1], [x - 0.115 * k - epsilon$1, y + 0.234 * k - epsilon$1]]) .stream(pointStream); return reset(); @@ -10284,6 +11886,7 @@ function azimuthalRaw(scale) { var cx = cos$1(x), cy = cos$1(y), k = scale(cx * cy); + if (k === Infinity) return [2, 0]; return [ k * cy * sin$1(x), k * sin$1(y) @@ -10293,23 +11896,23 @@ function azimuthalRaw(scale) { function azimuthalInvert(angle) { return function(x, y) { - var z = sqrt(x * x + y * y), + var z = sqrt$2(x * x + y * y), c = angle(z), sc = sin$1(c), cc = cos$1(c); return [ - atan2(x * sc, z * cc), - asin(z && y * sc / z) + atan2$1(x * sc, z * cc), + asin$1(z && y * sc / z) ]; } } var azimuthalEqualAreaRaw = azimuthalRaw(function(cxcy) { - return sqrt(2 / (1 + cxcy)); + return sqrt$2(2 / (1 + cxcy)); }); azimuthalEqualAreaRaw.invert = azimuthalInvert(function(z) { - return 2 * asin(z / 2); + return 2 * asin$1(z / 2); }); function azimuthalEqualArea() { @@ -10319,7 +11922,7 @@ function azimuthalEqualArea() { } var azimuthalEquidistantRaw = azimuthalRaw(function(c) { - return (c = acos(c)) && c / sin$1(c); + return (c = acos$1(c)) && c / sin$1(c); }); azimuthalEquidistantRaw.invert = azimuthalInvert(function(z) { @@ -10333,16 +11936,16 @@ function azimuthalEquidistant() { } function mercatorRaw(lambda, phi) { - return [lambda, log(tan((halfPi$2 + phi) / 2))]; + return [lambda, log$1(tan((halfPi$1 + phi) / 2))]; } mercatorRaw.invert = function(x, y) { - return [x, 2 * atan(exp(y)) - halfPi$2]; + return [x, 2 * atan(exp(y)) - halfPi$1]; }; function mercator() { return mercatorProjection(mercatorRaw) - .scale(961 / tau$3); + .scale(961 / tau$1); } function mercatorProjection(project) { @@ -10370,7 +11973,7 @@ function mercatorProjection(project) { }; function reclip() { - var k = pi$3 * scale(), + var k = pi$1 * scale(), t = m(rotation(m.rotate()).invert([0, 0])); return clipExtent(x0 == null ? [[t[0] - k, t[1] - k], [t[0] + k, t[1] + k]] : project === mercatorRaw @@ -10382,29 +11985,29 @@ function mercatorProjection(project) { } function tany(y) { - return tan((halfPi$2 + y) / 2); + return tan((halfPi$1 + y) / 2); } function conicConformalRaw(y0, y1) { var cy0 = cos$1(y0), - n = y0 === y1 ? sin$1(y0) : log(cy0 / cos$1(y1)) / log(tany(y1) / tany(y0)), - f = cy0 * pow(tany(y0), n) / n; + n = y0 === y1 ? sin$1(y0) : log$1(cy0 / cos$1(y1)) / log$1(tany(y1) / tany(y0)), + f = cy0 * pow$1(tany(y0), n) / n; if (!n) return mercatorRaw; function project(x, y) { - if (f > 0) { if (y < -halfPi$2 + epsilon$2) y = -halfPi$2 + epsilon$2; } - else { if (y > halfPi$2 - epsilon$2) y = halfPi$2 - epsilon$2; } - var r = f / pow(tany(y), n); + if (f > 0) { if (y < -halfPi$1 + epsilon$1) y = -halfPi$1 + epsilon$1; } + else { if (y > halfPi$1 - epsilon$1) y = halfPi$1 - epsilon$1; } + var r = f / pow$1(tany(y), n); return [r * sin$1(n * x), f - r * cos$1(n * x)]; } project.invert = function(x, y) { - var fy = f - y, r = sign(n) * sqrt(x * x + fy * fy), - l = atan2(x, abs(fy)) * sign(fy); + var fy = f - y, r = sign$1(n) * sqrt$2(x * x + fy * fy), + l = atan2$1(x, abs$1(fy)) * sign$1(fy); if (fy * n < 0) - l -= pi$3 * sign(x) * sign(fy); - return [l / n, 2 * atan(pow(f / r, 1 / n)) - halfPi$2]; + l -= pi$1 * sign$1(x) * sign$1(fy); + return [l / n, 2 * atan(pow$1(f / r, 1 / n)) - halfPi$1]; }; return project; @@ -10432,7 +12035,7 @@ function conicEquidistantRaw(y0, y1) { n = y0 === y1 ? sin$1(y0) : (cy0 - cos$1(y1)) / (y1 - y0), g = cy0 / n + y0; - if (abs(n) < epsilon$2) return equirectangularRaw; + if (abs$1(n) < epsilon$1) return equirectangularRaw; function project(x, y) { var gy = g - y, nx = n * x; @@ -10441,10 +12044,10 @@ function conicEquidistantRaw(y0, y1) { project.invert = function(x, y) { var gy = g - y, - l = atan2(x, abs(gy)) * sign(gy); + l = atan2$1(x, abs$1(gy)) * sign$1(gy); if (gy * n < 0) - l -= pi$3 * sign(x) * sign(gy); - return [l / n, g - sign(n) * sqrt(x * x + gy * gy)]; + l -= pi$1 * sign$1(x) * sign$1(gy); + return [l / n, g - sign$1(n) * sqrt$2(x * x + gy * gy)]; }; return project; @@ -10460,11 +12063,11 @@ var A1 = 1.340264, A2 = -0.081106, A3 = 0.000893, A4 = 0.003796, - M = sqrt(3) / 2, + M = sqrt$2(3) / 2, iterations = 12; function equalEarthRaw(lambda, phi) { - var l = asin(M * sin$1(phi)), l2 = l * l, l6 = l2 * l2 * l2; + var l = asin$1(M * sin$1(phi)), l2 = l * l, l6 = l2 * l2 * l2; return [ lambda * cos$1(l) / (M * (A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2))), l * (A1 + A2 * l2 + l6 * (A3 + A4 * l2)) @@ -10477,11 +12080,11 @@ equalEarthRaw.invert = function(x, y) { fy = l * (A1 + A2 * l2 + l6 * (A3 + A4 * l2)) - y; fpy = A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2); l -= delta = fy / fpy, l2 = l * l, l6 = l2 * l2 * l2; - if (abs(delta) < epsilon2$1) break; + if (abs$1(delta) < epsilon2) break; } return [ M * x * (A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2)) / cos$1(l), - asin(sin$1(l) / M) + asin$1(sin$1(l) / M) ]; }; @@ -10503,18 +12106,18 @@ function gnomonic() { .clipAngle(60); } -function identity$5() { +function identity$4() { var k = 1, tx = 0, ty = 0, sx = 1, sy = 1, // scale, translate and reflect alpha = 0, ca, sa, // angle x0 = null, y0, x1, y1, // clip extent kx = 1, ky = 1, - transform = transformer({ + transform = transformer$3({ point: function(x, y) { var p = projection([x, y]); this.stream.point(p[0], p[1]); } }), - postclip = identity$4, + postclip = identity$5, cache, cacheStream; @@ -10550,7 +12153,7 @@ function identity$5() { return arguments.length ? (postclip = _, x0 = y0 = x1 = y1 = null, reset()) : postclip; }; projection.clipExtent = function(_) { - return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$4) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]]; + return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$5) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]]; }; projection.scale = function(_) { return arguments.length ? (k = +_, reset()) : k; @@ -10559,7 +12162,7 @@ function identity$5() { return arguments.length ? (tx = +_[0], ty = +_[1], reset()) : [tx, ty]; }; projection.angle = function(_) { - return arguments.length ? (alpha = _ % 360 * radians, sa = sin$1(alpha), ca = cos$1(alpha), reset()) : alpha * degrees$1; + return arguments.length ? (alpha = _ % 360 * radians, sa = sin$1(alpha), ca = cos$1(alpha), reset()) : alpha * degrees; }; projection.reflectX = function(_) { return arguments.length ? (sx = _ ? -1 : 1, reset()) : sx < 0; @@ -10597,7 +12200,7 @@ naturalEarth1Raw.invert = function(x, y) { var phi2 = phi * phi, phi4 = phi2 * phi2; phi -= delta = (phi * (1.007226 + phi2 * (0.015085 + phi4 * (-0.044475 + 0.028874 * phi2 - 0.005916 * phi4))) - y) / (1.007226 + phi2 * (0.015085 * 3 + phi4 * (-0.044475 * 7 + 0.028874 * 9 * phi2 - 0.005916 * 11 * phi4))); - } while (abs(delta) > epsilon$2 && --i > 0); + } while (abs$1(delta) > epsilon$1 && --i > 0); return [ x / (0.8707 + (phi2 = phi * phi) * (-0.131979 + phi2 * (-0.013791 + phi2 * phi2 * phi2 * (0.003971 - 0.001529 * phi2)))), phi @@ -10613,12 +12216,12 @@ function orthographicRaw(x, y) { return [cos$1(y) * sin$1(x), sin$1(y)]; } -orthographicRaw.invert = azimuthalInvert(asin); +orthographicRaw.invert = azimuthalInvert(asin$1); function orthographic() { return projection(orthographicRaw) .scale(249.5) - .clipAngle(90 + epsilon$2); + .clipAngle(90 + epsilon$1); } function stereographicRaw(x, y) { @@ -10637,11 +12240,11 @@ function stereographic() { } function transverseMercatorRaw(lambda, phi) { - return [log(tan((halfPi$2 + phi) / 2)), -lambda]; + return [log$1(tan((halfPi$1 + phi) / 2)), -lambda]; } transverseMercatorRaw.invert = function(x, y) { - return [-y, 2 * atan(exp(x)) - halfPi$2]; + return [-y, 2 * atan(exp(x)) - halfPi$1]; }; function transverseMercator() { @@ -10661,7 +12264,7 @@ function transverseMercator() { .scale(159.155); } -function defaultSeparation(a, b) { +function defaultSeparation$1(a, b) { return a.parent === b.parent ? 1 : 2; } @@ -10694,7 +12297,7 @@ function leafRight(node) { } function cluster() { - var separation = defaultSeparation, + var separation = defaultSeparation$1, dx = 1, dy = 1, nodeSize = false; @@ -10759,45 +12362,52 @@ function node_count() { return this.eachAfter(count); } -function node_each(callback) { - var node = this, current, next = [node], children, i, n; - do { - current = next.reverse(), next = []; - while (node = current.pop()) { - callback(node), children = node.children; - if (children) for (i = 0, n = children.length; i < n; ++i) { - next.push(children[i]); - } - } - } while (next.length); +function node_each(callback, that) { + let index = -1; + for (const node of this) { + callback.call(that, node, ++index, this); + } return this; } -function node_eachBefore(callback) { - var node = this, nodes = [node], children, i; +function node_eachBefore(callback, that) { + var node = this, nodes = [node], children, i, index = -1; while (node = nodes.pop()) { - callback(node), children = node.children; - if (children) for (i = children.length - 1; i >= 0; --i) { - nodes.push(children[i]); + callback.call(that, node, ++index, this); + if (children = node.children) { + for (i = children.length - 1; i >= 0; --i) { + nodes.push(children[i]); + } } } return this; } -function node_eachAfter(callback) { - var node = this, nodes = [node], next = [], children, i, n; +function node_eachAfter(callback, that) { + var node = this, nodes = [node], next = [], children, i, n, index = -1; while (node = nodes.pop()) { - next.push(node), children = node.children; - if (children) for (i = 0, n = children.length; i < n; ++i) { - nodes.push(children[i]); + next.push(node); + if (children = node.children) { + for (i = 0, n = children.length; i < n; ++i) { + nodes.push(children[i]); + } } } while (node = next.pop()) { - callback(node); + callback.call(that, node, ++index, this); } return this; } +function node_find(callback, that) { + let index = -1; + for (const node of this) { + if (callback.call(that, node, ++index, this)) { + return node; + } + } +} + function node_sum(value) { return this.eachAfter(function(node) { var sum = +value(node.data) || 0, @@ -10856,11 +12466,7 @@ function node_ancestors() { } function node_descendants() { - var nodes = []; - this.each(function(node) { - nodes.push(node); - }); - return nodes; + return Array.from(this); } function node_leaves() { @@ -10883,9 +12489,30 @@ function node_links() { return links; } +function* node_iterator() { + var node = this, current, next = [node], children, i, n; + do { + current = next.reverse(), next = []; + while (node = current.pop()) { + yield node; + if (children = node.children) { + for (i = 0, n = children.length; i < n; ++i) { + next.push(children[i]); + } + } + } + } while (next.length); +} + function hierarchy(data, children) { - var root = new Node(data), - valued = +data.value && (root.value = data.value), + if (data instanceof Map) { + data = [undefined, data]; + if (children === undefined) children = mapChildren; + } else if (children === undefined) { + children = objectChildren; + } + + var root = new Node$1(data), node, nodes = [root], child, @@ -10893,14 +12520,11 @@ function hierarchy(data, children) { i, n; - if (children == null) children = defaultChildren; - while (node = nodes.pop()) { - if (valued) node.value = +node.data.value; - if ((childs = children(node.data)) && (n = childs.length)) { - node.children = new Array(n); + if ((childs = children(node.data)) && (n = (childs = Array.from(childs)).length)) { + node.children = childs; for (i = n - 1; i >= 0; --i) { - nodes.push(child = node.children[i] = new Node(childs[i])); + nodes.push(child = childs[i] = new Node$1(childs[i])); child.parent = node; child.depth = node.depth + 1; } @@ -10914,11 +12538,16 @@ function node_copy() { return hierarchy(this).eachBefore(copyData); } -function defaultChildren(d) { +function objectChildren(d) { return d.children; } +function mapChildren(d) { + return Array.isArray(d) ? d[1] : null; +} + function copyData(node) { + if (node.data.value !== undefined) node.value = node.data.value; node.data = node.data.data; } @@ -10928,19 +12557,20 @@ function computeHeight(node) { while ((node = node.parent) && (node.height < ++height)); } -function Node(data) { +function Node$1(data) { this.data = data; this.depth = this.height = 0; this.parent = null; } -Node.prototype = hierarchy.prototype = { - constructor: Node, +Node$1.prototype = hierarchy.prototype = { + constructor: Node$1, count: node_count, each: node_each, eachAfter: node_eachAfter, eachBefore: node_eachBefore, + find: node_find, sum: node_sum, sort: node_sort, path: node_path, @@ -10948,12 +12578,17 @@ Node.prototype = hierarchy.prototype = { descendants: node_descendants, leaves: node_leaves, links: node_links, - copy: node_copy + copy: node_copy, + [Symbol.iterator]: node_iterator }; -var slice$4 = Array.prototype.slice; +function array$1(x) { + return typeof x === "object" && "length" in x + ? x // Array, TypedArray, NodeList, array-like + : Array.from(x); // Map, Set, iterable, string, or anything else +} -function shuffle$1(array) { +function shuffle(array) { var m = array.length, t, i; @@ -10969,7 +12604,7 @@ function shuffle$1(array) { } function enclose(circles) { - var i = 0, n = (circles = shuffle$1(slice$4.call(circles))).length, B = [], p, e; + var i = 0, n = (circles = shuffle(Array.from(circles))).length, B = [], p, e; while (i < n) { p = circles[i]; @@ -11015,7 +12650,7 @@ function enclosesNot(a, b) { } function enclosesWeak(a, b) { - var dr = a.r - b.r + 1e-6, dx = b.x - a.x, dy = b.y - a.y; + var dr = a.r - b.r + Math.max(a.r, b.r, 1) * 1e-9, dx = b.x - a.x, dy = b.y - a.y; return dr > 0 && dr * dr > dx * dx + dy * dy; } @@ -11123,14 +12758,14 @@ function score(node) { return dx * dx + dy * dy; } -function Node$1(circle) { +function Node(circle) { this._ = circle; this.next = null; this.previous = null; } function packEnclose(circles) { - if (!(n = circles.length)) return 0; + if (!(n = (circles = array$1(circles)).length)) return 0; var a, b, c, n, aa, ca, i, j, k, sj, sk; @@ -11146,14 +12781,14 @@ function packEnclose(circles) { place(b, a, c = circles[2]); // Initialize the front-chain using the first three circles a, b and c. - a = new Node$1(a), b = new Node$1(b), c = new Node$1(c); + a = new Node(a), b = new Node(b), c = new Node(c); a.next = c.previous = b; b.next = a.previous = c; c.next = b.previous = a; // Attempt to place each remaining circle… pack: for (i = 3; i < n; ++i) { - place(a._, b._, c = circles[i]), c = new Node$1(c); + place(a._, b._, c = circles[i]), c = new Node(c); // Find the closest intersecting circle on the front-chain, if any. // “Closeness” is determined by linear distance along the front-chain. @@ -11215,17 +12850,17 @@ function constantZero() { return 0; } -function constant$9(x) { +function constant$2(x) { return function() { return x; }; } -function defaultRadius$1(d) { +function defaultRadius(d) { return Math.sqrt(d.value); } -function index$2() { +function index$1() { var radius = null, dx = 1, dy = 1, @@ -11238,7 +12873,7 @@ function index$2() { .eachAfter(packChildren(padding, 0.5)) .eachBefore(translateChild(1)); } else { - root.eachBefore(radiusLeaf(defaultRadius$1)) + root.eachBefore(radiusLeaf(defaultRadius)) .eachAfter(packChildren(constantZero, 1)) .eachAfter(packChildren(padding, root.r / Math.min(dx, dy))) .eachBefore(translateChild(Math.min(dx, dy) / (2 * root.r))); @@ -11255,7 +12890,7 @@ function index$2() { }; pack.padding = function(x) { - return arguments.length ? (padding = typeof x === "function" ? x : constant$9(+x), pack) : padding; + return arguments.length ? (padding = typeof x === "function" ? x : constant$2(+x), pack) : padding; }; return pack; @@ -11367,8 +13002,7 @@ function partition() { return partition; } -var keyPrefix$1 = "$", // Protect against keys like “__proto__”. - preroot = {depth: -1}, +var preroot = {depth: -1}, ambiguous = {}; function defaultId(d) { @@ -11384,37 +13018,40 @@ function stratify() { parentId = defaultParentId; function stratify(data) { - var d, + var nodes = Array.from(data), + n = nodes.length, + d, i, - n = data.length, root, parent, node, - nodes = new Array(n), nodeId, nodeKey, - nodeByKey = {}; + nodeByKey = new Map; for (i = 0; i < n; ++i) { - d = data[i], node = nodes[i] = new Node(d); + d = nodes[i], node = nodes[i] = new Node$1(d); if ((nodeId = id(d, i, data)) != null && (nodeId += "")) { - nodeKey = keyPrefix$1 + (node.id = nodeId); - nodeByKey[nodeKey] = nodeKey in nodeByKey ? ambiguous : node; + nodeKey = node.id = nodeId; + nodeByKey.set(nodeKey, nodeByKey.has(nodeKey) ? ambiguous : node); + } + if ((nodeId = parentId(d, i, data)) != null && (nodeId += "")) { + node.parent = nodeId; } } for (i = 0; i < n; ++i) { - node = nodes[i], nodeId = parentId(data[i], i, data); - if (nodeId == null || !(nodeId += "")) { - if (root) throw new Error("multiple roots"); - root = node; - } else { - parent = nodeByKey[keyPrefix$1 + nodeId]; + node = nodes[i]; + if (nodeId = node.parent) { + parent = nodeByKey.get(nodeId); if (!parent) throw new Error("missing: " + nodeId); if (parent === ambiguous) throw new Error("ambiguous: " + nodeId); if (parent.children) parent.children.push(node); else parent.children = [node]; node.parent = parent; + } else { + if (root) throw new Error("multiple roots"); + root = node; } } @@ -11438,7 +13075,7 @@ function stratify() { return stratify; } -function defaultSeparation$1(a, b) { +function defaultSeparation(a, b) { return a.parent === b.parent ? 1 : 2; } @@ -11509,7 +13146,7 @@ function TreeNode(node, i) { this.i = i; // number } -TreeNode.prototype = Object.create(Node.prototype); +TreeNode.prototype = Object.create(Node$1.prototype); function treeRoot(root) { var tree = new TreeNode(root, 0), @@ -11536,7 +13173,7 @@ function treeRoot(root) { // Node-link tree diagram using the Reingold-Tilford "tidy" algorithm function tree() { - var separation = defaultSeparation$1, + var separation = defaultSeparation, dx = 1, dy = 1, nodeSize = null; @@ -11751,7 +13388,7 @@ var squarify = (function custom(ratio) { return squarify; })(phi); -function index$3() { +function index() { var tile = squarify, round = false, dx = 1, @@ -11815,7 +13452,7 @@ function index$3() { }; treemap.paddingInner = function(x) { - return arguments.length ? (paddingInner = typeof x === "function" ? x : constant$9(+x), treemap) : paddingInner; + return arguments.length ? (paddingInner = typeof x === "function" ? x : constant$2(+x), treemap) : paddingInner; }; treemap.paddingOuter = function(x) { @@ -11823,19 +13460,19 @@ function index$3() { }; treemap.paddingTop = function(x) { - return arguments.length ? (paddingTop = typeof x === "function" ? x : constant$9(+x), treemap) : paddingTop; + return arguments.length ? (paddingTop = typeof x === "function" ? x : constant$2(+x), treemap) : paddingTop; }; treemap.paddingRight = function(x) { - return arguments.length ? (paddingRight = typeof x === "function" ? x : constant$9(+x), treemap) : paddingRight; + return arguments.length ? (paddingRight = typeof x === "function" ? x : constant$2(+x), treemap) : paddingRight; }; treemap.paddingBottom = function(x) { - return arguments.length ? (paddingBottom = typeof x === "function" ? x : constant$9(+x), treemap) : paddingBottom; + return arguments.length ? (paddingBottom = typeof x === "function" ? x : constant$2(+x), treemap) : paddingBottom; }; treemap.paddingLeft = function(x) { - return arguments.length ? (paddingLeft = typeof x === "function" ? x : constant$9(+x), treemap) : paddingLeft; + return arguments.length ? (paddingLeft = typeof x === "function" ? x : constant$2(+x), treemap) : paddingLeft; }; return treemap; @@ -11877,11 +13514,11 @@ function binary(parent, x0, y0, x1, y1) { valueRight = value - valueLeft; if ((x1 - x0) > (y1 - y0)) { - var xk = (x0 * valueRight + x1 * valueLeft) / value; + var xk = value ? (x0 * valueRight + x1 * valueLeft) / value : x1; partition(i, k, valueLeft, x0, y0, xk, y1); partition(k, j, valueRight, xk, y0, x1, y1); } else { - var yk = (y0 * valueRight + y1 * valueLeft) / value; + var yk = value ? (y0 * valueRight + y1 * valueLeft) / value : y1; partition(i, k, valueLeft, x0, y0, x1, yk); partition(k, j, valueRight, x0, yk, x1, y1); } @@ -11908,8 +13545,8 @@ var resquarify = (function custom(ratio) { while (++j < m) { row = rows[j], nodes = row.children; for (i = row.value = 0, n = nodes.length; i < n; ++i) row.value += nodes[i].value; - if (row.dice) treemapDice(row, x0, y0, x1, y0 += (y1 - y0) * row.value / value); - else treemapSlice(row, x0, y0, x0 += (x1 - x0) * row.value / value, y1); + if (row.dice) treemapDice(row, x0, y0, x1, value ? y0 += (y1 - y0) * row.value / value : y1); + else treemapSlice(row, x0, y0, value ? x0 += (x1 - x0) * row.value / value : x1, y1); value -= row.value; } } else { @@ -11925,7 +13562,7 @@ var resquarify = (function custom(ratio) { return resquarify; })(phi); -function area$2(polygon) { +function area$1(polygon) { var i = -1, n = polygon.length, a, @@ -11941,7 +13578,7 @@ function area$2(polygon) { return area / 2; } -function centroid$1(polygon) { +function centroid(polygon) { var i = -1, n = polygon.length, x = 0, @@ -11978,11 +13615,11 @@ function lexicographicOrder(a, b) { // Assumes points.length >= 3, is sorted by x, unique in y. // Returns an array of indices into points in left-to-right order. function computeUpperHullIndexes(points) { - var n = points.length, - indexes = [0, 1], - size = 2; + const n = points.length, + indexes = [0, 1]; + let size = 2, i; - for (var i = 2; i < n; ++i) { + for (i = 2; i < n; ++i) { while (size > 1 && cross$1(points[indexes[size - 2]], points[indexes[size - 1]], points[i]) <= 0) --size; indexes[size++] = i; } @@ -12018,7 +13655,7 @@ function hull(points) { return hull; } -function contains$2(polygon, point) { +function contains(polygon, point) { var n = polygon.length, p = polygon[n - 1], x = point[0], y = point[1], @@ -12035,7 +13672,7 @@ function contains$2(polygon, point) { return inside; } -function length$2(polygon) { +function length(polygon) { var i = -1, n = polygon.length, b = polygon[n - 1], @@ -12053,15 +13690,13 @@ function length$2(polygon) { yb = b[1]; xa -= xb; ya -= yb; - perimeter += Math.sqrt(xa * xa + ya * ya); + perimeter += Math.hypot(xa, ya); } return perimeter; } -function defaultSource$1() { - return Math.random(); -} +var defaultSource = Math.random; var uniform = (function sourceRandomUniform(source) { function randomUniform(min, max) { @@ -12077,7 +13712,22 @@ var uniform = (function sourceRandomUniform(source) { randomUniform.source = sourceRandomUniform; return randomUniform; -})(defaultSource$1); +})(defaultSource); + +var int = (function sourceRandomInt(source) { + function randomInt(min, max) { + if (arguments.length < 2) max = min, min = 0; + min = Math.floor(min); + max = Math.floor(max) - min; + return function() { + return Math.floor(source() * max + min); + }; + } + + randomInt.source = sourceRandomInt; + + return randomInt; +})(defaultSource); var normal = (function sourceRandomNormal(source) { function randomNormal(mu, sigma) { @@ -12104,11 +13754,13 @@ var normal = (function sourceRandomNormal(source) { randomNormal.source = sourceRandomNormal; return randomNormal; -})(defaultSource$1); +})(defaultSource); var logNormal = (function sourceRandomLogNormal(source) { + var N = normal.source(source); + function randomLogNormal() { - var randomNormal = normal.source(source).apply(this, arguments); + var randomNormal = N.apply(this, arguments); return function() { return Math.exp(randomNormal()); }; @@ -12117,24 +13769,29 @@ var logNormal = (function sourceRandomLogNormal(source) { randomLogNormal.source = sourceRandomLogNormal; return randomLogNormal; -})(defaultSource$1); +})(defaultSource); var irwinHall = (function sourceRandomIrwinHall(source) { function randomIrwinHall(n) { + if ((n = +n) <= 0) return () => 0; return function() { - for (var sum = 0, i = 0; i < n; ++i) sum += source(); - return sum; + for (var sum = 0, i = n; i > 1; --i) sum += source(); + return sum + i * source(); }; } randomIrwinHall.source = sourceRandomIrwinHall; return randomIrwinHall; -})(defaultSource$1); +})(defaultSource); var bates = (function sourceRandomBates(source) { + var I = irwinHall.source(source); + function randomBates(n) { - var randomIrwinHall = irwinHall.source(source)(n); + // use limiting distribution at n === 0 + if ((n = +n) === 0) return source; + var randomIrwinHall = I(n); return function() { return randomIrwinHall() / n; }; @@ -12143,19 +13800,230 @@ var bates = (function sourceRandomBates(source) { randomBates.source = sourceRandomBates; return randomBates; -})(defaultSource$1); +})(defaultSource); -var exponential$1 = (function sourceRandomExponential(source) { +var exponential = (function sourceRandomExponential(source) { function randomExponential(lambda) { return function() { - return -Math.log(1 - source()) / lambda; + return -Math.log1p(-source()) / lambda; }; } randomExponential.source = sourceRandomExponential; return randomExponential; -})(defaultSource$1); +})(defaultSource); + +var pareto = (function sourceRandomPareto(source) { + function randomPareto(alpha) { + if ((alpha = +alpha) < 0) throw new RangeError("invalid alpha"); + alpha = 1 / -alpha; + return function() { + return Math.pow(1 - source(), alpha); + }; + } + + randomPareto.source = sourceRandomPareto; + + return randomPareto; +})(defaultSource); + +var bernoulli = (function sourceRandomBernoulli(source) { + function randomBernoulli(p) { + if ((p = +p) < 0 || p > 1) throw new RangeError("invalid p"); + return function() { + return Math.floor(source() + p); + }; + } + + randomBernoulli.source = sourceRandomBernoulli; + + return randomBernoulli; +})(defaultSource); + +var geometric = (function sourceRandomGeometric(source) { + function randomGeometric(p) { + if ((p = +p) < 0 || p > 1) throw new RangeError("invalid p"); + if (p === 0) return () => Infinity; + if (p === 1) return () => 1; + p = Math.log1p(-p); + return function() { + return 1 + Math.floor(Math.log1p(-source()) / p); + }; + } + + randomGeometric.source = sourceRandomGeometric; + + return randomGeometric; +})(defaultSource); + +var gamma = (function sourceRandomGamma(source) { + var randomNormal = normal.source(source)(); + + function randomGamma(k, theta) { + if ((k = +k) < 0) throw new RangeError("invalid k"); + // degenerate distribution if k === 0 + if (k === 0) return () => 0; + theta = theta == null ? 1 : +theta; + // exponential distribution if k === 1 + if (k === 1) return () => -Math.log1p(-source()) * theta; + + var d = (k < 1 ? k + 1 : k) - 1 / 3, + c = 1 / (3 * Math.sqrt(d)), + multiplier = k < 1 ? () => Math.pow(source(), 1 / k) : () => 1; + return function() { + do { + do { + var x = randomNormal(), + v = 1 + c * x; + } while (v <= 0); + v *= v * v; + var u = 1 - source(); + } while (u >= 1 - 0.0331 * x * x * x * x && Math.log(u) >= 0.5 * x * x + d * (1 - v + Math.log(v))); + return d * v * multiplier() * theta; + }; + } + + randomGamma.source = sourceRandomGamma; + + return randomGamma; +})(defaultSource); + +var beta = (function sourceRandomBeta(source) { + var G = gamma.source(source); + + function randomBeta(alpha, beta) { + var X = G(alpha), + Y = G(beta); + return function() { + var x = X(); + return x === 0 ? 0 : x / (x + Y()); + }; + } + + randomBeta.source = sourceRandomBeta; + + return randomBeta; +})(defaultSource); + +var binomial = (function sourceRandomBinomial(source) { + var G = geometric.source(source), + B = beta.source(source); + + function randomBinomial(n, p) { + n = +n; + if ((p = +p) >= 1) return () => n; + if (p <= 0) return () => 0; + return function() { + var acc = 0, nn = n, pp = p; + while (nn * pp > 16 && nn * (1 - pp) > 16) { + var i = Math.floor((nn + 1) * pp), + y = B(i, nn - i + 1)(); + if (y <= pp) { + acc += i; + nn -= i; + pp = (pp - y) / (1 - y); + } else { + nn = i - 1; + pp /= y; + } + } + var sign = pp < 0.5, + pFinal = sign ? pp : 1 - pp, + g = G(pFinal); + for (var s = g(), k = 0; s <= nn; ++k) s += g(); + return acc + (sign ? k : nn - k); + }; + } + + randomBinomial.source = sourceRandomBinomial; + + return randomBinomial; +})(defaultSource); + +var weibull = (function sourceRandomWeibull(source) { + function randomWeibull(k, a, b) { + var outerFunc; + if ((k = +k) === 0) { + outerFunc = x => -Math.log(x); + } else { + k = 1 / k; + outerFunc = x => Math.pow(x, k); + } + a = a == null ? 0 : +a; + b = b == null ? 1 : +b; + return function() { + return a + b * outerFunc(-Math.log1p(-source())); + }; + } + + randomWeibull.source = sourceRandomWeibull; + + return randomWeibull; +})(defaultSource); + +var cauchy = (function sourceRandomCauchy(source) { + function randomCauchy(a, b) { + a = a == null ? 0 : +a; + b = b == null ? 1 : +b; + return function() { + return a + b * Math.tan(Math.PI * source()); + }; + } + + randomCauchy.source = sourceRandomCauchy; + + return randomCauchy; +})(defaultSource); + +var logistic = (function sourceRandomLogistic(source) { + function randomLogistic(a, b) { + a = a == null ? 0 : +a; + b = b == null ? 1 : +b; + return function() { + var u = source(); + return a + b * Math.log(u / (1 - u)); + }; + } + + randomLogistic.source = sourceRandomLogistic; + + return randomLogistic; +})(defaultSource); + +var poisson = (function sourceRandomPoisson(source) { + var G = gamma.source(source), + B = binomial.source(source); + + function randomPoisson(lambda) { + return function() { + var acc = 0, l = lambda; + while (l > 16) { + var n = Math.floor(0.875 * l), + t = G(n)(); + if (t > l) return acc + B(n - 1, l / t)(); + acc += n; + l -= t; + } + for (var s = -Math.log1p(-source()), k = 0; s <= l; ++k) s -= Math.log1p(-source()); + return acc + k; + }; + } + + randomPoisson.source = sourceRandomPoisson; + + return randomPoisson; +})(defaultSource); + +// https://en.wikipedia.org/wiki/Linear_congruential_generator#Parameters_in_common_use +const mul = 0x19660D; +const inc = 0x3C6EF35F; +const eps = 1 / 0x100000000; + +function lcg(seed = Math.random()) { + let state = (0 <= seed && seed < 1 ? seed / eps : Math.abs(seed)) | 0; + return () => (state = mul * state + inc | 0, eps * (state >>> 0)); +} function initRange(domain, range) { switch (arguments.length) { @@ -12169,21 +14037,25 @@ function initRange(domain, range) { function initInterpolator(domain, interpolator) { switch (arguments.length) { case 0: break; - case 1: this.interpolator(domain); break; - default: this.interpolator(interpolator).domain(domain); break; + case 1: { + if (typeof domain === "function") this.interpolator(domain); + else this.range(domain); + break; + } + default: { + this.domain(domain); + if (typeof interpolator === "function") this.interpolator(interpolator); + else this.range(interpolator); + break; + } } return this; } -var array$3 = Array.prototype; - -var map$3 = array$3.map; -var slice$5 = array$3.slice; - -var implicit = {name: "implicit"}; +const implicit = Symbol("implicit"); function ordinal() { - var index = map$1(), + var index = new Map(), domain = [], range = [], unknown = implicit; @@ -12199,14 +14071,17 @@ function ordinal() { scale.domain = function(_) { if (!arguments.length) return domain.slice(); - domain = [], index = map$1(); - var i = -1, n = _.length, d, key; - while (++i < n) if (!index.has(key = (d = _[i]) + "")) index.set(key, domain.push(d)); + domain = [], index = new Map(); + for (const value of _) { + const key = value + ""; + if (index.has(key)) continue; + index.set(key, domain.push(value)); + } return scale; }; scale.range = function(_) { - return arguments.length ? (range = slice$5.call(_), scale) : range.slice(); + return arguments.length ? (range = Array.from(_), scale) : range.slice(); }; scale.unknown = function(_) { @@ -12226,7 +14101,8 @@ function band() { var scale = ordinal().unknown(undefined), domain = scale.domain, ordinalRange = scale.range, - range = [0, 1], + r0 = 0, + r1 = 1, step, bandwidth, round = false, @@ -12238,9 +14114,9 @@ function band() { function rescale() { var n = domain().length, - reverse = range[1] < range[0], - start = range[reverse - 0], - stop = range[1 - reverse]; + reverse = r1 < r0, + start = reverse ? r1 : r0, + stop = reverse ? r0 : r1; step = (stop - start) / Math.max(1, n - paddingInner + paddingOuter * 2); if (round) step = Math.floor(step); start += (stop - start - step * (n - paddingInner)) * align; @@ -12255,11 +14131,11 @@ function band() { }; scale.range = function(_) { - return arguments.length ? (range = [+_[0], +_[1]], rescale()) : range.slice(); + return arguments.length ? ([r0, r1] = _, r0 = +r0, r1 = +r1, rescale()) : [r0, r1]; }; scale.rangeRound = function(_) { - return range = [+_[0], +_[1]], round = true, rescale(); + return [r0, r1] = _, r0 = +r0, r1 = +r1, round = true, rescale(); }; scale.bandwidth = function() { @@ -12291,7 +14167,7 @@ function band() { }; scale.copy = function() { - return band(domain(), range) + return band(domain(), [r0, r1]) .round(round) .paddingInner(paddingInner) .paddingOuter(paddingOuter) @@ -12315,34 +14191,34 @@ function pointish(scale) { return scale; } -function point$1() { +function point$4() { return pointish(band.apply(null, arguments).paddingInner(1)); } -function constant$a(x) { +function constants(x) { return function() { return x; }; } -function number$2(x) { +function number$1(x) { return +x; } var unit = [0, 1]; -function identity$6(x) { +function identity$3(x) { return x; } function normalize(a, b) { return (b -= (a = +a)) ? function(x) { return (x - a) / b; } - : constant$a(isNaN(b) ? NaN : 0.5); + : constants(isNaN(b) ? NaN : 0.5); } -function clamper(domain) { - var a = domain[0], b = domain[domain.length - 1], t; +function clamper(a, b) { + var t; if (a > b) t = a, a = b, b = t; return function(x) { return Math.max(a, Math.min(b, x)); }; } @@ -12379,7 +14255,7 @@ function polymap(domain, range, interpolate) { }; } -function copy(source, target) { +function copy$1(source, target) { return target .domain(source.domain()) .range(source.range()) @@ -12388,26 +14264,28 @@ function copy(source, target) { .unknown(source.unknown()); } -function transformer$1() { +function transformer$2() { var domain = unit, range = unit, - interpolate = interpolateValue, + interpolate = interpolate$2, transform, untransform, unknown, - clamp = identity$6, + clamp = identity$3, piecewise, output, input; function rescale() { - piecewise = Math.min(domain.length, range.length) > 2 ? polymap : bimap; + var n = Math.min(domain.length, range.length); + if (clamp !== identity$3) clamp = clamper(domain[0], domain[n - 1]); + piecewise = n > 2 ? polymap : bimap; output = input = null; return scale; } function scale(x) { - return isNaN(x = +x) ? unknown : (output || (output = piecewise(domain.map(transform), range, interpolate)))(transform(clamp(x))); + return x == null || isNaN(x = +x) ? unknown : (output || (output = piecewise(domain.map(transform), range, interpolate)))(transform(clamp(x))); } scale.invert = function(y) { @@ -12415,19 +14293,19 @@ function transformer$1() { }; scale.domain = function(_) { - return arguments.length ? (domain = map$3.call(_, number$2), clamp === identity$6 || (clamp = clamper(domain)), rescale()) : domain.slice(); + return arguments.length ? (domain = Array.from(_, number$1), rescale()) : domain.slice(); }; scale.range = function(_) { - return arguments.length ? (range = slice$5.call(_), rescale()) : range.slice(); + return arguments.length ? (range = Array.from(_), rescale()) : range.slice(); }; scale.rangeRound = function(_) { - return range = slice$5.call(_), interpolate = interpolateRound, rescale(); + return range = Array.from(_), interpolate = interpolateRound, rescale(); }; scale.clamp = function(_) { - return arguments.length ? (clamp = _ ? clamper(domain) : identity$6, scale) : clamp !== identity$6; + return arguments.length ? (clamp = _ ? true : identity$3, rescale()) : clamp !== identity$3; }; scale.interpolate = function(_) { @@ -12444,8 +14322,8 @@ function transformer$1() { }; } -function continuous(transform, untransform) { - return transformer$1()(transform, untransform); +function continuous() { + return transformer$2()(identity$3, identity$3); } function tickFormat(start, stop, count, specifier) { @@ -12491,38 +14369,36 @@ function linearish(scale) { scale.nice = function(count) { if (count == null) count = 10; - var d = domain(), - i0 = 0, - i1 = d.length - 1, - start = d[i0], - stop = d[i1], - step; + var d = domain(); + var i0 = 0; + var i1 = d.length - 1; + var start = d[i0]; + var stop = d[i1]; + var prestep; + var step; + var maxIter = 10; if (stop < start) { step = start, start = stop, stop = step; step = i0, i0 = i1, i1 = step; } - - step = tickIncrement(start, stop, count); - - if (step > 0) { - start = Math.floor(start / step) * step; - stop = Math.ceil(stop / step) * step; + + while (maxIter-- > 0) { step = tickIncrement(start, stop, count); - } else if (step < 0) { - start = Math.ceil(start * step) / step; - stop = Math.floor(stop * step) / step; - step = tickIncrement(start, stop, count); - } - - if (step > 0) { - d[i0] = Math.floor(start / step) * step; - d[i1] = Math.ceil(stop / step) * step; - domain(d); - } else if (step < 0) { - d[i0] = Math.ceil(start * step) / step; - d[i1] = Math.floor(stop * step) / step; - domain(d); + if (step === prestep) { + d[i0] = start; + d[i1] = stop; + return domain(d); + } else if (step > 0) { + start = Math.floor(start / step) * step; + stop = Math.ceil(stop / step) * step; + } else if (step < 0) { + start = Math.ceil(start * step) / step; + stop = Math.floor(stop * step) / step; + } else { + break; + } + prestep = step; } return scale; @@ -12531,11 +14407,11 @@ function linearish(scale) { return scale; } -function linear$2() { - var scale = continuous(identity$6, identity$6); +function linear() { + var scale = continuous(); scale.copy = function() { - return copy(scale, linear$2()); + return copy$1(scale, linear()); }; initRange.apply(scale, arguments); @@ -12543,17 +14419,17 @@ function linear$2() { return linearish(scale); } -function identity$7(domain) { +function identity$2(domain) { var unknown; function scale(x) { - return isNaN(x = +x) ? unknown : x; + return x == null || isNaN(x = +x) ? unknown : x; } scale.invert = scale; scale.domain = scale.range = function(_) { - return arguments.length ? (domain = map$3.call(_, number$2), scale) : domain.slice(); + return arguments.length ? (domain = Array.from(_, number$1), scale) : domain.slice(); }; scale.unknown = function(_) { @@ -12561,10 +14437,10 @@ function identity$7(domain) { }; scale.copy = function() { - return identity$7(domain).unknown(unknown); + return identity$2(domain).unknown(unknown); }; - domain = arguments.length ? map$3.call(domain, number$2) : [0, 1]; + domain = arguments.length ? Array.from(domain, number$1) : [0, 1]; return linearish(scale); } @@ -12670,15 +14546,15 @@ function loggish(transform) { z = []; if (!(base % 1) && j - i < n) { - i = Math.round(i) - 1, j = Math.round(j) + 1; - if (u > 0) for (; i < j; ++i) { + i = Math.floor(i), j = Math.ceil(j); + if (u > 0) for (; i <= j; ++i) { for (k = 1, p = pows(i); k < base; ++k) { t = p * k; if (t < u) continue; if (t > v) break; z.push(t); } - } else for (; i < j; ++i) { + } else for (; i <= j; ++i) { for (k = base - 1, p = pows(i); k >= 1; --k) { t = p * k; if (t < u) continue; @@ -12686,6 +14562,7 @@ function loggish(transform) { z.push(t); } } + if (z.length * 2 < n) z = ticks(u, v, n); } else { z = ticks(i, j, Math.min(j - i, n)).map(pows); } @@ -12716,11 +14593,11 @@ function loggish(transform) { return scale; } -function log$1() { - var scale = loggish(transformer$1()).domain([1, 10]); +function log() { + var scale = loggish(transformer$2()).domain([1, 10]); scale.copy = function() { - return copy(scale, log$1()).base(scale.base()); + return copy$1(scale, log()).base(scale.base()); }; initRange.apply(scale, arguments); @@ -12741,2870 +14618,2400 @@ function transformSymexp(c) { } function symlogish(transform) { - var c = 1, scale = transform(transformSymlog(c), transformSymexp(c)); - - scale.constant = function(_) { - return arguments.length ? transform(transformSymlog(c = +_), transformSymexp(c)) : c; - }; - - return linearish(scale); -} - -function symlog() { - var scale = symlogish(transformer$1()); - - scale.copy = function() { - return copy(scale, symlog()).constant(scale.constant()); - }; - - return initRange.apply(scale, arguments); -} - -function transformPow(exponent) { - return function(x) { - return x < 0 ? -Math.pow(-x, exponent) : Math.pow(x, exponent); - }; -} - -function transformSqrt(x) { - return x < 0 ? -Math.sqrt(-x) : Math.sqrt(x); -} - -function transformSquare(x) { - return x < 0 ? -x * x : x * x; -} - -function powish(transform) { - var scale = transform(identity$6, identity$6), - exponent = 1; - - function rescale() { - return exponent === 1 ? transform(identity$6, identity$6) - : exponent === 0.5 ? transform(transformSqrt, transformSquare) - : transform(transformPow(exponent), transformPow(1 / exponent)); - } - - scale.exponent = function(_) { - return arguments.length ? (exponent = +_, rescale()) : exponent; - }; - - return linearish(scale); -} - -function pow$1() { - var scale = powish(transformer$1()); - - scale.copy = function() { - return copy(scale, pow$1()).exponent(scale.exponent()); - }; - - initRange.apply(scale, arguments); - - return scale; -} - -function sqrt$1() { - return pow$1.apply(null, arguments).exponent(0.5); -} - -function quantile() { - var domain = [], - range = [], - thresholds = [], - unknown; - - function rescale() { - var i = 0, n = Math.max(1, range.length); - thresholds = new Array(n - 1); - while (++i < n) thresholds[i - 1] = threshold(domain, i / n); - return scale; - } - - function scale(x) { - return isNaN(x = +x) ? unknown : range[bisectRight(thresholds, x)]; - } - - scale.invertExtent = function(y) { - var i = range.indexOf(y); - return i < 0 ? [NaN, NaN] : [ - i > 0 ? thresholds[i - 1] : domain[0], - i < thresholds.length ? thresholds[i] : domain[domain.length - 1] - ]; - }; - - scale.domain = function(_) { - if (!arguments.length) return domain.slice(); - domain = []; - for (var i = 0, n = _.length, d; i < n; ++i) if (d = _[i], d != null && !isNaN(d = +d)) domain.push(d); - domain.sort(ascending); - return rescale(); - }; - - scale.range = function(_) { - return arguments.length ? (range = slice$5.call(_), rescale()) : range.slice(); - }; - - scale.unknown = function(_) { - return arguments.length ? (unknown = _, scale) : unknown; - }; - - scale.quantiles = function() { - return thresholds.slice(); - }; - - scale.copy = function() { - return quantile() - .domain(domain) - .range(range) - .unknown(unknown); - }; - - return initRange.apply(scale, arguments); -} - -function quantize$1() { - var x0 = 0, - x1 = 1, - n = 1, - domain = [0.5], - range = [0, 1], - unknown; - - function scale(x) { - return x <= x ? range[bisectRight(domain, x, 0, n)] : unknown; - } - - function rescale() { - var i = -1; - domain = new Array(n); - while (++i < n) domain[i] = ((i + 1) * x1 - (i - n) * x0) / (n + 1); - return scale; - } - - scale.domain = function(_) { - return arguments.length ? (x0 = +_[0], x1 = +_[1], rescale()) : [x0, x1]; - }; - - scale.range = function(_) { - return arguments.length ? (n = (range = slice$5.call(_)).length - 1, rescale()) : range.slice(); - }; - - scale.invertExtent = function(y) { - var i = range.indexOf(y); - return i < 0 ? [NaN, NaN] - : i < 1 ? [x0, domain[0]] - : i >= n ? [domain[n - 1], x1] - : [domain[i - 1], domain[i]]; - }; - - scale.unknown = function(_) { - return arguments.length ? (unknown = _, scale) : scale; - }; - - scale.thresholds = function() { - return domain.slice(); - }; - - scale.copy = function() { - return quantize$1() - .domain([x0, x1]) - .range(range) - .unknown(unknown); - }; - - return initRange.apply(linearish(scale), arguments); -} - -function threshold$1() { - var domain = [0.5], - range = [0, 1], - unknown, - n = 1; - - function scale(x) { - return x <= x ? range[bisectRight(domain, x, 0, n)] : unknown; - } - - scale.domain = function(_) { - return arguments.length ? (domain = slice$5.call(_), n = Math.min(domain.length, range.length - 1), scale) : domain.slice(); - }; - - scale.range = function(_) { - return arguments.length ? (range = slice$5.call(_), n = Math.min(domain.length, range.length - 1), scale) : range.slice(); - }; - - scale.invertExtent = function(y) { - var i = range.indexOf(y); - return [domain[i - 1], domain[i]]; - }; - - scale.unknown = function(_) { - return arguments.length ? (unknown = _, scale) : unknown; - }; - - scale.copy = function() { - return threshold$1() - .domain(domain) - .range(range) - .unknown(unknown); - }; - - return initRange.apply(scale, arguments); -} - -var t0$1 = new Date, - t1$1 = new Date; - -function newInterval(floori, offseti, count, field) { - - function interval(date) { - return floori(date = arguments.length === 0 ? new Date : new Date(+date)), date; - } - - interval.floor = function(date) { - return floori(date = new Date(+date)), date; - }; - - interval.ceil = function(date) { - return floori(date = new Date(date - 1)), offseti(date, 1), floori(date), date; - }; - - interval.round = function(date) { - var d0 = interval(date), - d1 = interval.ceil(date); - return date - d0 < d1 - date ? d0 : d1; - }; - - interval.offset = function(date, step) { - return offseti(date = new Date(+date), step == null ? 1 : Math.floor(step)), date; - }; - - interval.range = function(start, stop, step) { - var range = [], previous; - start = interval.ceil(start); - step = step == null ? 1 : Math.floor(step); - if (!(start < stop) || !(step > 0)) return range; // also handles Invalid Date - do range.push(previous = new Date(+start)), offseti(start, step), floori(start); - while (previous < start && start < stop); - return range; - }; - - interval.filter = function(test) { - return newInterval(function(date) { - if (date >= date) while (floori(date), !test(date)) date.setTime(date - 1); - }, function(date, step) { - if (date >= date) { - if (step < 0) while (++step <= 0) { - while (offseti(date, -1), !test(date)) {} // eslint-disable-line no-empty - } else while (--step >= 0) { - while (offseti(date, +1), !test(date)) {} // eslint-disable-line no-empty - } - } - }); - }; - - if (count) { - interval.count = function(start, end) { - t0$1.setTime(+start), t1$1.setTime(+end); - floori(t0$1), floori(t1$1); - return Math.floor(count(t0$1, t1$1)); - }; - - interval.every = function(step) { - step = Math.floor(step); - return !isFinite(step) || !(step > 0) ? null - : !(step > 1) ? interval - : interval.filter(field - ? function(d) { return field(d) % step === 0; } - : function(d) { return interval.count(0, d) % step === 0; }); - }; - } - - return interval; -} - -var millisecond = newInterval(function() { - // noop -}, function(date, step) { - date.setTime(+date + step); -}, function(start, end) { - return end - start; -}); - -// An optimized implementation for this simple case. -millisecond.every = function(k) { - k = Math.floor(k); - if (!isFinite(k) || !(k > 0)) return null; - if (!(k > 1)) return millisecond; - return newInterval(function(date) { - date.setTime(Math.floor(date / k) * k); - }, function(date, step) { - date.setTime(+date + step * k); - }, function(start, end) { - return (end - start) / k; - }); -}; -var milliseconds = millisecond.range; - -var durationSecond = 1e3; -var durationMinute = 6e4; -var durationHour = 36e5; -var durationDay = 864e5; -var durationWeek = 6048e5; - -var second = newInterval(function(date) { - date.setTime(date - date.getMilliseconds()); -}, function(date, step) { - date.setTime(+date + step * durationSecond); -}, function(start, end) { - return (end - start) / durationSecond; -}, function(date) { - return date.getUTCSeconds(); -}); -var seconds = second.range; - -var minute = newInterval(function(date) { - date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond); -}, function(date, step) { - date.setTime(+date + step * durationMinute); -}, function(start, end) { - return (end - start) / durationMinute; -}, function(date) { - return date.getMinutes(); -}); -var minutes = minute.range; - -var hour = newInterval(function(date) { - date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond - date.getMinutes() * durationMinute); -}, function(date, step) { - date.setTime(+date + step * durationHour); -}, function(start, end) { - return (end - start) / durationHour; -}, function(date) { - return date.getHours(); -}); -var hours = hour.range; - -var day = newInterval(function(date) { - date.setHours(0, 0, 0, 0); -}, function(date, step) { - date.setDate(date.getDate() + step); -}, function(start, end) { - return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationDay; -}, function(date) { - return date.getDate() - 1; -}); -var days = day.range; - -function weekday(i) { - return newInterval(function(date) { - date.setDate(date.getDate() - (date.getDay() + 7 - i) % 7); - date.setHours(0, 0, 0, 0); - }, function(date, step) { - date.setDate(date.getDate() + step * 7); - }, function(start, end) { - return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationWeek; - }); -} - -var sunday = weekday(0); -var monday = weekday(1); -var tuesday = weekday(2); -var wednesday = weekday(3); -var thursday = weekday(4); -var friday = weekday(5); -var saturday = weekday(6); - -var sundays = sunday.range; -var mondays = monday.range; -var tuesdays = tuesday.range; -var wednesdays = wednesday.range; -var thursdays = thursday.range; -var fridays = friday.range; -var saturdays = saturday.range; - -var month = newInterval(function(date) { - date.setDate(1); - date.setHours(0, 0, 0, 0); -}, function(date, step) { - date.setMonth(date.getMonth() + step); -}, function(start, end) { - return end.getMonth() - start.getMonth() + (end.getFullYear() - start.getFullYear()) * 12; -}, function(date) { - return date.getMonth(); -}); -var months = month.range; - -var year = newInterval(function(date) { - date.setMonth(0, 1); - date.setHours(0, 0, 0, 0); -}, function(date, step) { - date.setFullYear(date.getFullYear() + step); -}, function(start, end) { - return end.getFullYear() - start.getFullYear(); -}, function(date) { - return date.getFullYear(); -}); - -// An optimized implementation for this simple case. -year.every = function(k) { - return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : newInterval(function(date) { - date.setFullYear(Math.floor(date.getFullYear() / k) * k); - date.setMonth(0, 1); - date.setHours(0, 0, 0, 0); - }, function(date, step) { - date.setFullYear(date.getFullYear() + step * k); - }); -}; -var years = year.range; - -var utcMinute = newInterval(function(date) { - date.setUTCSeconds(0, 0); -}, function(date, step) { - date.setTime(+date + step * durationMinute); -}, function(start, end) { - return (end - start) / durationMinute; -}, function(date) { - return date.getUTCMinutes(); -}); -var utcMinutes = utcMinute.range; - -var utcHour = newInterval(function(date) { - date.setUTCMinutes(0, 0, 0); -}, function(date, step) { - date.setTime(+date + step * durationHour); -}, function(start, end) { - return (end - start) / durationHour; -}, function(date) { - return date.getUTCHours(); -}); -var utcHours = utcHour.range; - -var utcDay = newInterval(function(date) { - date.setUTCHours(0, 0, 0, 0); -}, function(date, step) { - date.setUTCDate(date.getUTCDate() + step); -}, function(start, end) { - return (end - start) / durationDay; -}, function(date) { - return date.getUTCDate() - 1; -}); -var utcDays = utcDay.range; - -function utcWeekday(i) { - return newInterval(function(date) { - date.setUTCDate(date.getUTCDate() - (date.getUTCDay() + 7 - i) % 7); - date.setUTCHours(0, 0, 0, 0); - }, function(date, step) { - date.setUTCDate(date.getUTCDate() + step * 7); - }, function(start, end) { - return (end - start) / durationWeek; - }); -} - -var utcSunday = utcWeekday(0); -var utcMonday = utcWeekday(1); -var utcTuesday = utcWeekday(2); -var utcWednesday = utcWeekday(3); -var utcThursday = utcWeekday(4); -var utcFriday = utcWeekday(5); -var utcSaturday = utcWeekday(6); - -var utcSundays = utcSunday.range; -var utcMondays = utcMonday.range; -var utcTuesdays = utcTuesday.range; -var utcWednesdays = utcWednesday.range; -var utcThursdays = utcThursday.range; -var utcFridays = utcFriday.range; -var utcSaturdays = utcSaturday.range; - -var utcMonth = newInterval(function(date) { - date.setUTCDate(1); - date.setUTCHours(0, 0, 0, 0); -}, function(date, step) { - date.setUTCMonth(date.getUTCMonth() + step); -}, function(start, end) { - return end.getUTCMonth() - start.getUTCMonth() + (end.getUTCFullYear() - start.getUTCFullYear()) * 12; -}, function(date) { - return date.getUTCMonth(); -}); -var utcMonths = utcMonth.range; - -var utcYear = newInterval(function(date) { - date.setUTCMonth(0, 1); - date.setUTCHours(0, 0, 0, 0); -}, function(date, step) { - date.setUTCFullYear(date.getUTCFullYear() + step); -}, function(start, end) { - return end.getUTCFullYear() - start.getUTCFullYear(); -}, function(date) { - return date.getUTCFullYear(); -}); - -// An optimized implementation for this simple case. -utcYear.every = function(k) { - return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : newInterval(function(date) { - date.setUTCFullYear(Math.floor(date.getUTCFullYear() / k) * k); - date.setUTCMonth(0, 1); - date.setUTCHours(0, 0, 0, 0); - }, function(date, step) { - date.setUTCFullYear(date.getUTCFullYear() + step * k); - }); -}; -var utcYears = utcYear.range; - -function localDate(d) { - if (0 <= d.y && d.y < 100) { - var date = new Date(-1, d.m, d.d, d.H, d.M, d.S, d.L); - date.setFullYear(d.y); - return date; - } - return new Date(d.y, d.m, d.d, d.H, d.M, d.S, d.L); -} - -function utcDate(d) { - if (0 <= d.y && d.y < 100) { - var date = new Date(Date.UTC(-1, d.m, d.d, d.H, d.M, d.S, d.L)); - date.setUTCFullYear(d.y); - return date; - } - return new Date(Date.UTC(d.y, d.m, d.d, d.H, d.M, d.S, d.L)); -} - -function newDate(y, m, d) { - return {y: y, m: m, d: d, H: 0, M: 0, S: 0, L: 0}; -} - -function formatLocale$1(locale) { - var locale_dateTime = locale.dateTime, - locale_date = locale.date, - locale_time = locale.time, - locale_periods = locale.periods, - locale_weekdays = locale.days, - locale_shortWeekdays = locale.shortDays, - locale_months = locale.months, - locale_shortMonths = locale.shortMonths; - - var periodRe = formatRe(locale_periods), - periodLookup = formatLookup(locale_periods), - weekdayRe = formatRe(locale_weekdays), - weekdayLookup = formatLookup(locale_weekdays), - shortWeekdayRe = formatRe(locale_shortWeekdays), - shortWeekdayLookup = formatLookup(locale_shortWeekdays), - monthRe = formatRe(locale_months), - monthLookup = formatLookup(locale_months), - shortMonthRe = formatRe(locale_shortMonths), - shortMonthLookup = formatLookup(locale_shortMonths); - - var formats = { - "a": formatShortWeekday, - "A": formatWeekday, - "b": formatShortMonth, - "B": formatMonth, - "c": null, - "d": formatDayOfMonth, - "e": formatDayOfMonth, - "f": formatMicroseconds, - "H": formatHour24, - "I": formatHour12, - "j": formatDayOfYear, - "L": formatMilliseconds, - "m": formatMonthNumber, - "M": formatMinutes, - "p": formatPeriod, - "q": formatQuarter, - "Q": formatUnixTimestamp, - "s": formatUnixTimestampSeconds, - "S": formatSeconds, - "u": formatWeekdayNumberMonday, - "U": formatWeekNumberSunday, - "V": formatWeekNumberISO, - "w": formatWeekdayNumberSunday, - "W": formatWeekNumberMonday, - "x": null, - "X": null, - "y": formatYear$1, - "Y": formatFullYear, - "Z": formatZone, - "%": formatLiteralPercent - }; - - var utcFormats = { - "a": formatUTCShortWeekday, - "A": formatUTCWeekday, - "b": formatUTCShortMonth, - "B": formatUTCMonth, - "c": null, - "d": formatUTCDayOfMonth, - "e": formatUTCDayOfMonth, - "f": formatUTCMicroseconds, - "H": formatUTCHour24, - "I": formatUTCHour12, - "j": formatUTCDayOfYear, - "L": formatUTCMilliseconds, - "m": formatUTCMonthNumber, - "M": formatUTCMinutes, - "p": formatUTCPeriod, - "q": formatUTCQuarter, - "Q": formatUnixTimestamp, - "s": formatUnixTimestampSeconds, - "S": formatUTCSeconds, - "u": formatUTCWeekdayNumberMonday, - "U": formatUTCWeekNumberSunday, - "V": formatUTCWeekNumberISO, - "w": formatUTCWeekdayNumberSunday, - "W": formatUTCWeekNumberMonday, - "x": null, - "X": null, - "y": formatUTCYear, - "Y": formatUTCFullYear, - "Z": formatUTCZone, - "%": formatLiteralPercent + var c = 1, scale = transform(transformSymlog(c), transformSymexp(c)); + + scale.constant = function(_) { + return arguments.length ? transform(transformSymlog(c = +_), transformSymexp(c)) : c; }; - var parses = { - "a": parseShortWeekday, - "A": parseWeekday, - "b": parseShortMonth, - "B": parseMonth, - "c": parseLocaleDateTime, - "d": parseDayOfMonth, - "e": parseDayOfMonth, - "f": parseMicroseconds, - "H": parseHour24, - "I": parseHour24, - "j": parseDayOfYear, - "L": parseMilliseconds, - "m": parseMonthNumber, - "M": parseMinutes, - "p": parsePeriod, - "q": parseQuarter, - "Q": parseUnixTimestamp, - "s": parseUnixTimestampSeconds, - "S": parseSeconds, - "u": parseWeekdayNumberMonday, - "U": parseWeekNumberSunday, - "V": parseWeekNumberISO, - "w": parseWeekdayNumberSunday, - "W": parseWeekNumberMonday, - "x": parseLocaleDate, - "X": parseLocaleTime, - "y": parseYear, - "Y": parseFullYear, - "Z": parseZone, - "%": parseLiteralPercent + return linearish(scale); +} + +function symlog() { + var scale = symlogish(transformer$2()); + + scale.copy = function() { + return copy$1(scale, symlog()).constant(scale.constant()); }; - // These recursive directive definitions must be deferred. - formats.x = newFormat(locale_date, formats); - formats.X = newFormat(locale_time, formats); - formats.c = newFormat(locale_dateTime, formats); - utcFormats.x = newFormat(locale_date, utcFormats); - utcFormats.X = newFormat(locale_time, utcFormats); - utcFormats.c = newFormat(locale_dateTime, utcFormats); + return initRange.apply(scale, arguments); +} - function newFormat(specifier, formats) { - return function(date) { - var string = [], - i = -1, - j = 0, - n = specifier.length, - c, - pad, - format; +function transformPow(exponent) { + return function(x) { + return x < 0 ? -Math.pow(-x, exponent) : Math.pow(x, exponent); + }; +} - if (!(date instanceof Date)) date = new Date(+date); +function transformSqrt(x) { + return x < 0 ? -Math.sqrt(-x) : Math.sqrt(x); +} - while (++i < n) { - if (specifier.charCodeAt(i) === 37) { - string.push(specifier.slice(j, i)); - if ((pad = pads[c = specifier.charAt(++i)]) != null) c = specifier.charAt(++i); - else pad = c === "e" ? " " : "0"; - if (format = formats[c]) c = format(date, pad); - string.push(c); - j = i + 1; - } - } +function transformSquare(x) { + return x < 0 ? -x * x : x * x; +} - string.push(specifier.slice(j, i)); - return string.join(""); - }; +function powish(transform) { + var scale = transform(identity$3, identity$3), + exponent = 1; + + function rescale() { + return exponent === 1 ? transform(identity$3, identity$3) + : exponent === 0.5 ? transform(transformSqrt, transformSquare) + : transform(transformPow(exponent), transformPow(1 / exponent)); } - function newParse(specifier, Z) { - return function(string) { - var d = newDate(1900, undefined, 1), - i = parseSpecifier(d, specifier, string += "", 0), - week, day$1; - if (i != string.length) return null; + scale.exponent = function(_) { + return arguments.length ? (exponent = +_, rescale()) : exponent; + }; - // If a UNIX timestamp is specified, return it. - if ("Q" in d) return new Date(d.Q); - if ("s" in d) return new Date(d.s * 1000 + ("L" in d ? d.L : 0)); + return linearish(scale); +} - // If this is utcParse, never use the local timezone. - if (Z && !("Z" in d)) d.Z = 0; +function pow() { + var scale = powish(transformer$2()); - // The am-pm flag is 0 for AM, and 1 for PM. - if ("p" in d) d.H = d.H % 12 + d.p * 12; + scale.copy = function() { + return copy$1(scale, pow()).exponent(scale.exponent()); + }; - // If the month was not specified, inherit from the quarter. - if (d.m === undefined) d.m = "q" in d ? d.q : 0; + initRange.apply(scale, arguments); - // Convert day-of-week and week-of-year to day-of-year. - if ("V" in d) { - if (d.V < 1 || d.V > 53) return null; - if (!("w" in d)) d.w = 1; - if ("Z" in d) { - week = utcDate(newDate(d.y, 0, 1)), day$1 = week.getUTCDay(); - week = day$1 > 4 || day$1 === 0 ? utcMonday.ceil(week) : utcMonday(week); - week = utcDay.offset(week, (d.V - 1) * 7); - d.y = week.getUTCFullYear(); - d.m = week.getUTCMonth(); - d.d = week.getUTCDate() + (d.w + 6) % 7; - } else { - week = localDate(newDate(d.y, 0, 1)), day$1 = week.getDay(); - week = day$1 > 4 || day$1 === 0 ? monday.ceil(week) : monday(week); - week = day.offset(week, (d.V - 1) * 7); - d.y = week.getFullYear(); - d.m = week.getMonth(); - d.d = week.getDate() + (d.w + 6) % 7; - } - } else if ("W" in d || "U" in d) { - if (!("w" in d)) d.w = "u" in d ? d.u % 7 : "W" in d ? 1 : 0; - day$1 = "Z" in d ? utcDate(newDate(d.y, 0, 1)).getUTCDay() : localDate(newDate(d.y, 0, 1)).getDay(); - d.m = 0; - d.d = "W" in d ? (d.w + 6) % 7 + d.W * 7 - (day$1 + 5) % 7 : d.w + d.U * 7 - (day$1 + 6) % 7; - } + return scale; +} - // If a time zone is specified, all fields are interpreted as UTC and then - // offset according to the specified time zone. - if ("Z" in d) { - d.H += d.Z / 100 | 0; - d.M += d.Z % 100; - return utcDate(d); - } +function sqrt$1() { + return pow.apply(null, arguments).exponent(0.5); +} - // Otherwise, all fields are in local time. - return localDate(d); - }; - } +function square$1(x) { + return Math.sign(x) * x * x; +} - function parseSpecifier(d, specifier, string, j) { - var i = 0, - n = specifier.length, - m = string.length, - c, - parse; +function unsquare(x) { + return Math.sign(x) * Math.sqrt(Math.abs(x)); +} - while (i < n) { - if (j >= m) return -1; - c = specifier.charCodeAt(i++); - if (c === 37) { - c = specifier.charAt(i++); - parse = parses[c in pads ? specifier.charAt(i++) : c]; - if (!parse || ((j = parse(d, string, j)) < 0)) return -1; - } else if (c != string.charCodeAt(j++)) { - return -1; - } - } +function radial() { + var squared = continuous(), + range = [0, 1], + round = false, + unknown; - return j; + function scale(x) { + var y = unsquare(squared(x)); + return isNaN(y) ? unknown : round ? Math.round(y) : y; } - function parsePeriod(d, string, i) { - var n = periodRe.exec(string.slice(i)); - return n ? (d.p = periodLookup[n[0].toLowerCase()], i + n[0].length) : -1; - } + scale.invert = function(y) { + return squared.invert(square$1(y)); + }; - function parseShortWeekday(d, string, i) { - var n = shortWeekdayRe.exec(string.slice(i)); - return n ? (d.w = shortWeekdayLookup[n[0].toLowerCase()], i + n[0].length) : -1; - } + scale.domain = function(_) { + return arguments.length ? (squared.domain(_), scale) : squared.domain(); + }; - function parseWeekday(d, string, i) { - var n = weekdayRe.exec(string.slice(i)); - return n ? (d.w = weekdayLookup[n[0].toLowerCase()], i + n[0].length) : -1; - } + scale.range = function(_) { + return arguments.length ? (squared.range((range = Array.from(_, number$1)).map(square$1)), scale) : range.slice(); + }; - function parseShortMonth(d, string, i) { - var n = shortMonthRe.exec(string.slice(i)); - return n ? (d.m = shortMonthLookup[n[0].toLowerCase()], i + n[0].length) : -1; - } + scale.rangeRound = function(_) { + return scale.range(_).round(true); + }; - function parseMonth(d, string, i) { - var n = monthRe.exec(string.slice(i)); - return n ? (d.m = monthLookup[n[0].toLowerCase()], i + n[0].length) : -1; - } + scale.round = function(_) { + return arguments.length ? (round = !!_, scale) : round; + }; - function parseLocaleDateTime(d, string, i) { - return parseSpecifier(d, locale_dateTime, string, i); - } + scale.clamp = function(_) { + return arguments.length ? (squared.clamp(_), scale) : squared.clamp(); + }; - function parseLocaleDate(d, string, i) { - return parseSpecifier(d, locale_date, string, i); - } + scale.unknown = function(_) { + return arguments.length ? (unknown = _, scale) : unknown; + }; - function parseLocaleTime(d, string, i) { - return parseSpecifier(d, locale_time, string, i); - } + scale.copy = function() { + return radial(squared.domain(), range) + .round(round) + .clamp(squared.clamp()) + .unknown(unknown); + }; - function formatShortWeekday(d) { - return locale_shortWeekdays[d.getDay()]; - } + initRange.apply(scale, arguments); - function formatWeekday(d) { - return locale_weekdays[d.getDay()]; - } + return linearish(scale); +} - function formatShortMonth(d) { - return locale_shortMonths[d.getMonth()]; +function quantile() { + var domain = [], + range = [], + thresholds = [], + unknown; + + function rescale() { + var i = 0, n = Math.max(1, range.length); + thresholds = new Array(n - 1); + while (++i < n) thresholds[i - 1] = quantileSorted(domain, i / n); + return scale; } - function formatMonth(d) { - return locale_months[d.getMonth()]; + function scale(x) { + return x == null || isNaN(x = +x) ? unknown : range[bisectRight(thresholds, x)]; } - function formatPeriod(d) { - return locale_periods[+(d.getHours() >= 12)]; - } + scale.invertExtent = function(y) { + var i = range.indexOf(y); + return i < 0 ? [NaN, NaN] : [ + i > 0 ? thresholds[i - 1] : domain[0], + i < thresholds.length ? thresholds[i] : domain[domain.length - 1] + ]; + }; + + scale.domain = function(_) { + if (!arguments.length) return domain.slice(); + domain = []; + for (let d of _) if (d != null && !isNaN(d = +d)) domain.push(d); + domain.sort(ascending$3); + return rescale(); + }; + + scale.range = function(_) { + return arguments.length ? (range = Array.from(_), rescale()) : range.slice(); + }; - function formatQuarter(d) { - return 1 + ~~(d.getMonth() / 3); - } + scale.unknown = function(_) { + return arguments.length ? (unknown = _, scale) : unknown; + }; - function formatUTCShortWeekday(d) { - return locale_shortWeekdays[d.getUTCDay()]; - } + scale.quantiles = function() { + return thresholds.slice(); + }; - function formatUTCWeekday(d) { - return locale_weekdays[d.getUTCDay()]; - } + scale.copy = function() { + return quantile() + .domain(domain) + .range(range) + .unknown(unknown); + }; - function formatUTCShortMonth(d) { - return locale_shortMonths[d.getUTCMonth()]; - } + return initRange.apply(scale, arguments); +} - function formatUTCMonth(d) { - return locale_months[d.getUTCMonth()]; - } +function quantize() { + var x0 = 0, + x1 = 1, + n = 1, + domain = [0.5], + range = [0, 1], + unknown; - function formatUTCPeriod(d) { - return locale_periods[+(d.getUTCHours() >= 12)]; + function scale(x) { + return x != null && x <= x ? range[bisectRight(domain, x, 0, n)] : unknown; } - function formatUTCQuarter(d) { - return 1 + ~~(d.getUTCMonth() / 3); + function rescale() { + var i = -1; + domain = new Array(n); + while (++i < n) domain[i] = ((i + 1) * x1 - (i - n) * x0) / (n + 1); + return scale; } - return { - format: function(specifier) { - var f = newFormat(specifier += "", formats); - f.toString = function() { return specifier; }; - return f; - }, - parse: function(specifier) { - var p = newParse(specifier += "", false); - p.toString = function() { return specifier; }; - return p; - }, - utcFormat: function(specifier) { - var f = newFormat(specifier += "", utcFormats); - f.toString = function() { return specifier; }; - return f; - }, - utcParse: function(specifier) { - var p = newParse(specifier += "", true); - p.toString = function() { return specifier; }; - return p; - } + scale.domain = function(_) { + return arguments.length ? ([x0, x1] = _, x0 = +x0, x1 = +x1, rescale()) : [x0, x1]; }; -} - -var pads = {"-": "", "_": " ", "0": "0"}, - numberRe = /^\s*\d+/, // note: ignores next directive - percentRe = /^%/, - requoteRe = /[\\^$*+?|[\]().{}]/g; - -function pad$1(value, fill, width) { - var sign = value < 0 ? "-" : "", - string = (sign ? -value : value) + "", - length = string.length; - return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string); -} -function requote(s) { - return s.replace(requoteRe, "\\$&"); -} + scale.range = function(_) { + return arguments.length ? (n = (range = Array.from(_)).length - 1, rescale()) : range.slice(); + }; -function formatRe(names) { - return new RegExp("^(?:" + names.map(requote).join("|") + ")", "i"); -} + scale.invertExtent = function(y) { + var i = range.indexOf(y); + return i < 0 ? [NaN, NaN] + : i < 1 ? [x0, domain[0]] + : i >= n ? [domain[n - 1], x1] + : [domain[i - 1], domain[i]]; + }; -function formatLookup(names) { - var map = {}, i = -1, n = names.length; - while (++i < n) map[names[i].toLowerCase()] = i; - return map; -} + scale.unknown = function(_) { + return arguments.length ? (unknown = _, scale) : scale; + }; -function parseWeekdayNumberSunday(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 1)); - return n ? (d.w = +n[0], i + n[0].length) : -1; -} + scale.thresholds = function() { + return domain.slice(); + }; -function parseWeekdayNumberMonday(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 1)); - return n ? (d.u = +n[0], i + n[0].length) : -1; -} + scale.copy = function() { + return quantize() + .domain([x0, x1]) + .range(range) + .unknown(unknown); + }; -function parseWeekNumberSunday(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.U = +n[0], i + n[0].length) : -1; + return initRange.apply(linearish(scale), arguments); } -function parseWeekNumberISO(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.V = +n[0], i + n[0].length) : -1; -} +function threshold() { + var domain = [0.5], + range = [0, 1], + unknown, + n = 1; -function parseWeekNumberMonday(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.W = +n[0], i + n[0].length) : -1; -} + function scale(x) { + return x != null && x <= x ? range[bisectRight(domain, x, 0, n)] : unknown; + } -function parseFullYear(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 4)); - return n ? (d.y = +n[0], i + n[0].length) : -1; -} + scale.domain = function(_) { + return arguments.length ? (domain = Array.from(_), n = Math.min(domain.length, range.length - 1), scale) : domain.slice(); + }; -function parseYear(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.y = +n[0] + (+n[0] > 68 ? 1900 : 2000), i + n[0].length) : -1; -} + scale.range = function(_) { + return arguments.length ? (range = Array.from(_), n = Math.min(domain.length, range.length - 1), scale) : range.slice(); + }; -function parseZone(d, string, i) { - var n = /^(Z)|([+-]\d\d)(?::?(\d\d))?/.exec(string.slice(i, i + 6)); - return n ? (d.Z = n[1] ? 0 : -(n[2] + (n[3] || "00")), i + n[0].length) : -1; -} + scale.invertExtent = function(y) { + var i = range.indexOf(y); + return [domain[i - 1], domain[i]]; + }; -function parseQuarter(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 1)); - return n ? (d.q = n[0] * 3 - 3, i + n[0].length) : -1; -} + scale.unknown = function(_) { + return arguments.length ? (unknown = _, scale) : unknown; + }; -function parseMonthNumber(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.m = n[0] - 1, i + n[0].length) : -1; -} + scale.copy = function() { + return threshold() + .domain(domain) + .range(range) + .unknown(unknown); + }; -function parseDayOfMonth(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.d = +n[0], i + n[0].length) : -1; + return initRange.apply(scale, arguments); } -function parseDayOfYear(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 3)); - return n ? (d.m = 0, d.d = +n[0], i + n[0].length) : -1; -} +var t0 = new Date, + t1 = new Date; -function parseHour24(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.H = +n[0], i + n[0].length) : -1; -} +function newInterval(floori, offseti, count, field) { -function parseMinutes(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.M = +n[0], i + n[0].length) : -1; -} + function interval(date) { + return floori(date = arguments.length === 0 ? new Date : new Date(+date)), date; + } -function parseSeconds(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.S = +n[0], i + n[0].length) : -1; -} + interval.floor = function(date) { + return floori(date = new Date(+date)), date; + }; -function parseMilliseconds(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 3)); - return n ? (d.L = +n[0], i + n[0].length) : -1; -} + interval.ceil = function(date) { + return floori(date = new Date(date - 1)), offseti(date, 1), floori(date), date; + }; -function parseMicroseconds(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 6)); - return n ? (d.L = Math.floor(n[0] / 1000), i + n[0].length) : -1; -} + interval.round = function(date) { + var d0 = interval(date), + d1 = interval.ceil(date); + return date - d0 < d1 - date ? d0 : d1; + }; -function parseLiteralPercent(d, string, i) { - var n = percentRe.exec(string.slice(i, i + 1)); - return n ? i + n[0].length : -1; -} + interval.offset = function(date, step) { + return offseti(date = new Date(+date), step == null ? 1 : Math.floor(step)), date; + }; -function parseUnixTimestamp(d, string, i) { - var n = numberRe.exec(string.slice(i)); - return n ? (d.Q = +n[0], i + n[0].length) : -1; -} + interval.range = function(start, stop, step) { + var range = [], previous; + start = interval.ceil(start); + step = step == null ? 1 : Math.floor(step); + if (!(start < stop) || !(step > 0)) return range; // also handles Invalid Date + do range.push(previous = new Date(+start)), offseti(start, step), floori(start); + while (previous < start && start < stop); + return range; + }; -function parseUnixTimestampSeconds(d, string, i) { - var n = numberRe.exec(string.slice(i)); - return n ? (d.s = +n[0], i + n[0].length) : -1; -} + interval.filter = function(test) { + return newInterval(function(date) { + if (date >= date) while (floori(date), !test(date)) date.setTime(date - 1); + }, function(date, step) { + if (date >= date) { + if (step < 0) while (++step <= 0) { + while (offseti(date, -1), !test(date)) {} // eslint-disable-line no-empty + } else while (--step >= 0) { + while (offseti(date, +1), !test(date)) {} // eslint-disable-line no-empty + } + } + }); + }; -function formatDayOfMonth(d, p) { - return pad$1(d.getDate(), p, 2); -} + if (count) { + interval.count = function(start, end) { + t0.setTime(+start), t1.setTime(+end); + floori(t0), floori(t1); + return Math.floor(count(t0, t1)); + }; -function formatHour24(d, p) { - return pad$1(d.getHours(), p, 2); -} + interval.every = function(step) { + step = Math.floor(step); + return !isFinite(step) || !(step > 0) ? null + : !(step > 1) ? interval + : interval.filter(field + ? function(d) { return field(d) % step === 0; } + : function(d) { return interval.count(0, d) % step === 0; }); + }; + } -function formatHour12(d, p) { - return pad$1(d.getHours() % 12 || 12, p, 2); + return interval; } -function formatDayOfYear(d, p) { - return pad$1(1 + day.count(year(d), d), p, 3); -} +var millisecond = newInterval(function() { + // noop +}, function(date, step) { + date.setTime(+date + step); +}, function(start, end) { + return end - start; +}); -function formatMilliseconds(d, p) { - return pad$1(d.getMilliseconds(), p, 3); -} +// An optimized implementation for this simple case. +millisecond.every = function(k) { + k = Math.floor(k); + if (!isFinite(k) || !(k > 0)) return null; + if (!(k > 1)) return millisecond; + return newInterval(function(date) { + date.setTime(Math.floor(date / k) * k); + }, function(date, step) { + date.setTime(+date + step * k); + }, function(start, end) { + return (end - start) / k; + }); +}; +var milliseconds = millisecond.range; -function formatMicroseconds(d, p) { - return formatMilliseconds(d, p) + "000"; -} +var durationSecond$1 = 1e3; +var durationMinute$1 = 6e4; +var durationHour$1 = 36e5; +var durationDay$1 = 864e5; +var durationWeek$1 = 6048e5; -function formatMonthNumber(d, p) { - return pad$1(d.getMonth() + 1, p, 2); -} +var second = newInterval(function(date) { + date.setTime(date - date.getMilliseconds()); +}, function(date, step) { + date.setTime(+date + step * durationSecond$1); +}, function(start, end) { + return (end - start) / durationSecond$1; +}, function(date) { + return date.getUTCSeconds(); +}); +var seconds = second.range; -function formatMinutes(d, p) { - return pad$1(d.getMinutes(), p, 2); -} +var minute = newInterval(function(date) { + date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond$1); +}, function(date, step) { + date.setTime(+date + step * durationMinute$1); +}, function(start, end) { + return (end - start) / durationMinute$1; +}, function(date) { + return date.getMinutes(); +}); +var minutes = minute.range; -function formatSeconds(d, p) { - return pad$1(d.getSeconds(), p, 2); -} +var hour = newInterval(function(date) { + date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond$1 - date.getMinutes() * durationMinute$1); +}, function(date, step) { + date.setTime(+date + step * durationHour$1); +}, function(start, end) { + return (end - start) / durationHour$1; +}, function(date) { + return date.getHours(); +}); +var hours = hour.range; -function formatWeekdayNumberMonday(d) { - var day = d.getDay(); - return day === 0 ? 7 : day; -} +var day = newInterval( + date => date.setHours(0, 0, 0, 0), + (date, step) => date.setDate(date.getDate() + step), + (start, end) => (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute$1) / durationDay$1, + date => date.getDate() - 1 +); +var days = day.range; -function formatWeekNumberSunday(d, p) { - return pad$1(sunday.count(year(d) - 1, d), p, 2); +function weekday(i) { + return newInterval(function(date) { + date.setDate(date.getDate() - (date.getDay() + 7 - i) % 7); + date.setHours(0, 0, 0, 0); + }, function(date, step) { + date.setDate(date.getDate() + step * 7); + }, function(start, end) { + return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute$1) / durationWeek$1; + }); } -function formatWeekNumberISO(d, p) { - var day = d.getDay(); - d = (day >= 4 || day === 0) ? thursday(d) : thursday.ceil(d); - return pad$1(thursday.count(year(d), d) + (year(d).getDay() === 4), p, 2); -} +var sunday = weekday(0); +var monday = weekday(1); +var tuesday = weekday(2); +var wednesday = weekday(3); +var thursday = weekday(4); +var friday = weekday(5); +var saturday = weekday(6); -function formatWeekdayNumberSunday(d) { - return d.getDay(); -} +var sundays = sunday.range; +var mondays = monday.range; +var tuesdays = tuesday.range; +var wednesdays = wednesday.range; +var thursdays = thursday.range; +var fridays = friday.range; +var saturdays = saturday.range; -function formatWeekNumberMonday(d, p) { - return pad$1(monday.count(year(d) - 1, d), p, 2); -} +var month = newInterval(function(date) { + date.setDate(1); + date.setHours(0, 0, 0, 0); +}, function(date, step) { + date.setMonth(date.getMonth() + step); +}, function(start, end) { + return end.getMonth() - start.getMonth() + (end.getFullYear() - start.getFullYear()) * 12; +}, function(date) { + return date.getMonth(); +}); +var months = month.range; -function formatYear$1(d, p) { - return pad$1(d.getFullYear() % 100, p, 2); -} +var year = newInterval(function(date) { + date.setMonth(0, 1); + date.setHours(0, 0, 0, 0); +}, function(date, step) { + date.setFullYear(date.getFullYear() + step); +}, function(start, end) { + return end.getFullYear() - start.getFullYear(); +}, function(date) { + return date.getFullYear(); +}); -function formatFullYear(d, p) { - return pad$1(d.getFullYear() % 10000, p, 4); -} +// An optimized implementation for this simple case. +year.every = function(k) { + return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : newInterval(function(date) { + date.setFullYear(Math.floor(date.getFullYear() / k) * k); + date.setMonth(0, 1); + date.setHours(0, 0, 0, 0); + }, function(date, step) { + date.setFullYear(date.getFullYear() + step * k); + }); +}; +var years = year.range; -function formatZone(d) { - var z = d.getTimezoneOffset(); - return (z > 0 ? "-" : (z *= -1, "+")) - + pad$1(z / 60 | 0, "0", 2) - + pad$1(z % 60, "0", 2); -} +var utcMinute = newInterval(function(date) { + date.setUTCSeconds(0, 0); +}, function(date, step) { + date.setTime(+date + step * durationMinute$1); +}, function(start, end) { + return (end - start) / durationMinute$1; +}, function(date) { + return date.getUTCMinutes(); +}); +var utcMinutes = utcMinute.range; -function formatUTCDayOfMonth(d, p) { - return pad$1(d.getUTCDate(), p, 2); -} +var utcHour = newInterval(function(date) { + date.setUTCMinutes(0, 0, 0); +}, function(date, step) { + date.setTime(+date + step * durationHour$1); +}, function(start, end) { + return (end - start) / durationHour$1; +}, function(date) { + return date.getUTCHours(); +}); +var utcHours = utcHour.range; -function formatUTCHour24(d, p) { - return pad$1(d.getUTCHours(), p, 2); -} +var utcDay = newInterval(function(date) { + date.setUTCHours(0, 0, 0, 0); +}, function(date, step) { + date.setUTCDate(date.getUTCDate() + step); +}, function(start, end) { + return (end - start) / durationDay$1; +}, function(date) { + return date.getUTCDate() - 1; +}); +var utcDays = utcDay.range; -function formatUTCHour12(d, p) { - return pad$1(d.getUTCHours() % 12 || 12, p, 2); +function utcWeekday(i) { + return newInterval(function(date) { + date.setUTCDate(date.getUTCDate() - (date.getUTCDay() + 7 - i) % 7); + date.setUTCHours(0, 0, 0, 0); + }, function(date, step) { + date.setUTCDate(date.getUTCDate() + step * 7); + }, function(start, end) { + return (end - start) / durationWeek$1; + }); } -function formatUTCDayOfYear(d, p) { - return pad$1(1 + utcDay.count(utcYear(d), d), p, 3); -} +var utcSunday = utcWeekday(0); +var utcMonday = utcWeekday(1); +var utcTuesday = utcWeekday(2); +var utcWednesday = utcWeekday(3); +var utcThursday = utcWeekday(4); +var utcFriday = utcWeekday(5); +var utcSaturday = utcWeekday(6); -function formatUTCMilliseconds(d, p) { - return pad$1(d.getUTCMilliseconds(), p, 3); -} +var utcSundays = utcSunday.range; +var utcMondays = utcMonday.range; +var utcTuesdays = utcTuesday.range; +var utcWednesdays = utcWednesday.range; +var utcThursdays = utcThursday.range; +var utcFridays = utcFriday.range; +var utcSaturdays = utcSaturday.range; -function formatUTCMicroseconds(d, p) { - return formatUTCMilliseconds(d, p) + "000"; -} +var utcMonth = newInterval(function(date) { + date.setUTCDate(1); + date.setUTCHours(0, 0, 0, 0); +}, function(date, step) { + date.setUTCMonth(date.getUTCMonth() + step); +}, function(start, end) { + return end.getUTCMonth() - start.getUTCMonth() + (end.getUTCFullYear() - start.getUTCFullYear()) * 12; +}, function(date) { + return date.getUTCMonth(); +}); +var utcMonths = utcMonth.range; -function formatUTCMonthNumber(d, p) { - return pad$1(d.getUTCMonth() + 1, p, 2); -} +var utcYear = newInterval(function(date) { + date.setUTCMonth(0, 1); + date.setUTCHours(0, 0, 0, 0); +}, function(date, step) { + date.setUTCFullYear(date.getUTCFullYear() + step); +}, function(start, end) { + return end.getUTCFullYear() - start.getUTCFullYear(); +}, function(date) { + return date.getUTCFullYear(); +}); -function formatUTCMinutes(d, p) { - return pad$1(d.getUTCMinutes(), p, 2); -} +// An optimized implementation for this simple case. +utcYear.every = function(k) { + return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : newInterval(function(date) { + date.setUTCFullYear(Math.floor(date.getUTCFullYear() / k) * k); + date.setUTCMonth(0, 1); + date.setUTCHours(0, 0, 0, 0); + }, function(date, step) { + date.setUTCFullYear(date.getUTCFullYear() + step * k); + }); +}; +var utcYears = utcYear.range; -function formatUTCSeconds(d, p) { - return pad$1(d.getUTCSeconds(), p, 2); +function localDate(d) { + if (0 <= d.y && d.y < 100) { + var date = new Date(-1, d.m, d.d, d.H, d.M, d.S, d.L); + date.setFullYear(d.y); + return date; + } + return new Date(d.y, d.m, d.d, d.H, d.M, d.S, d.L); } -function formatUTCWeekdayNumberMonday(d) { - var dow = d.getUTCDay(); - return dow === 0 ? 7 : dow; +function utcDate(d) { + if (0 <= d.y && d.y < 100) { + var date = new Date(Date.UTC(-1, d.m, d.d, d.H, d.M, d.S, d.L)); + date.setUTCFullYear(d.y); + return date; + } + return new Date(Date.UTC(d.y, d.m, d.d, d.H, d.M, d.S, d.L)); } -function formatUTCWeekNumberSunday(d, p) { - return pad$1(utcSunday.count(utcYear(d) - 1, d), p, 2); +function newDate(y, m, d) { + return {y: y, m: m, d: d, H: 0, M: 0, S: 0, L: 0}; } -function formatUTCWeekNumberISO(d, p) { - var day = d.getUTCDay(); - d = (day >= 4 || day === 0) ? utcThursday(d) : utcThursday.ceil(d); - return pad$1(utcThursday.count(utcYear(d), d) + (utcYear(d).getUTCDay() === 4), p, 2); -} +function formatLocale(locale) { + var locale_dateTime = locale.dateTime, + locale_date = locale.date, + locale_time = locale.time, + locale_periods = locale.periods, + locale_weekdays = locale.days, + locale_shortWeekdays = locale.shortDays, + locale_months = locale.months, + locale_shortMonths = locale.shortMonths; -function formatUTCWeekdayNumberSunday(d) { - return d.getUTCDay(); -} + var periodRe = formatRe(locale_periods), + periodLookup = formatLookup(locale_periods), + weekdayRe = formatRe(locale_weekdays), + weekdayLookup = formatLookup(locale_weekdays), + shortWeekdayRe = formatRe(locale_shortWeekdays), + shortWeekdayLookup = formatLookup(locale_shortWeekdays), + monthRe = formatRe(locale_months), + monthLookup = formatLookup(locale_months), + shortMonthRe = formatRe(locale_shortMonths), + shortMonthLookup = formatLookup(locale_shortMonths); -function formatUTCWeekNumberMonday(d, p) { - return pad$1(utcMonday.count(utcYear(d) - 1, d), p, 2); -} + var formats = { + "a": formatShortWeekday, + "A": formatWeekday, + "b": formatShortMonth, + "B": formatMonth, + "c": null, + "d": formatDayOfMonth, + "e": formatDayOfMonth, + "f": formatMicroseconds, + "g": formatYearISO, + "G": formatFullYearISO, + "H": formatHour24, + "I": formatHour12, + "j": formatDayOfYear, + "L": formatMilliseconds, + "m": formatMonthNumber, + "M": formatMinutes, + "p": formatPeriod, + "q": formatQuarter, + "Q": formatUnixTimestamp, + "s": formatUnixTimestampSeconds, + "S": formatSeconds, + "u": formatWeekdayNumberMonday, + "U": formatWeekNumberSunday, + "V": formatWeekNumberISO, + "w": formatWeekdayNumberSunday, + "W": formatWeekNumberMonday, + "x": null, + "X": null, + "y": formatYear, + "Y": formatFullYear, + "Z": formatZone, + "%": formatLiteralPercent + }; -function formatUTCYear(d, p) { - return pad$1(d.getUTCFullYear() % 100, p, 2); -} + var utcFormats = { + "a": formatUTCShortWeekday, + "A": formatUTCWeekday, + "b": formatUTCShortMonth, + "B": formatUTCMonth, + "c": null, + "d": formatUTCDayOfMonth, + "e": formatUTCDayOfMonth, + "f": formatUTCMicroseconds, + "g": formatUTCYearISO, + "G": formatUTCFullYearISO, + "H": formatUTCHour24, + "I": formatUTCHour12, + "j": formatUTCDayOfYear, + "L": formatUTCMilliseconds, + "m": formatUTCMonthNumber, + "M": formatUTCMinutes, + "p": formatUTCPeriod, + "q": formatUTCQuarter, + "Q": formatUnixTimestamp, + "s": formatUnixTimestampSeconds, + "S": formatUTCSeconds, + "u": formatUTCWeekdayNumberMonday, + "U": formatUTCWeekNumberSunday, + "V": formatUTCWeekNumberISO, + "w": formatUTCWeekdayNumberSunday, + "W": formatUTCWeekNumberMonday, + "x": null, + "X": null, + "y": formatUTCYear, + "Y": formatUTCFullYear, + "Z": formatUTCZone, + "%": formatLiteralPercent + }; -function formatUTCFullYear(d, p) { - return pad$1(d.getUTCFullYear() % 10000, p, 4); -} + var parses = { + "a": parseShortWeekday, + "A": parseWeekday, + "b": parseShortMonth, + "B": parseMonth, + "c": parseLocaleDateTime, + "d": parseDayOfMonth, + "e": parseDayOfMonth, + "f": parseMicroseconds, + "g": parseYear, + "G": parseFullYear, + "H": parseHour24, + "I": parseHour24, + "j": parseDayOfYear, + "L": parseMilliseconds, + "m": parseMonthNumber, + "M": parseMinutes, + "p": parsePeriod, + "q": parseQuarter, + "Q": parseUnixTimestamp, + "s": parseUnixTimestampSeconds, + "S": parseSeconds, + "u": parseWeekdayNumberMonday, + "U": parseWeekNumberSunday, + "V": parseWeekNumberISO, + "w": parseWeekdayNumberSunday, + "W": parseWeekNumberMonday, + "x": parseLocaleDate, + "X": parseLocaleTime, + "y": parseYear, + "Y": parseFullYear, + "Z": parseZone, + "%": parseLiteralPercent + }; -function formatUTCZone() { - return "+0000"; -} + // These recursive directive definitions must be deferred. + formats.x = newFormat(locale_date, formats); + formats.X = newFormat(locale_time, formats); + formats.c = newFormat(locale_dateTime, formats); + utcFormats.x = newFormat(locale_date, utcFormats); + utcFormats.X = newFormat(locale_time, utcFormats); + utcFormats.c = newFormat(locale_dateTime, utcFormats); -function formatLiteralPercent() { - return "%"; -} + function newFormat(specifier, formats) { + return function(date) { + var string = [], + i = -1, + j = 0, + n = specifier.length, + c, + pad, + format; -function formatUnixTimestamp(d) { - return +d; -} + if (!(date instanceof Date)) date = new Date(+date); -function formatUnixTimestampSeconds(d) { - return Math.floor(+d / 1000); -} + while (++i < n) { + if (specifier.charCodeAt(i) === 37) { + string.push(specifier.slice(j, i)); + if ((pad = pads[c = specifier.charAt(++i)]) != null) c = specifier.charAt(++i); + else pad = c === "e" ? " " : "0"; + if (format = formats[c]) c = format(date, pad); + string.push(c); + j = i + 1; + } + } -var locale$1; + string.push(specifier.slice(j, i)); + return string.join(""); + }; + } -defaultLocale$1({ - dateTime: "%x, %X", - date: "%-m/%-d/%Y", - time: "%-I:%M:%S %p", - periods: ["AM", "PM"], - days: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"], - shortDays: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"], - months: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"], - shortMonths: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"] -}); + function newParse(specifier, Z) { + return function(string) { + var d = newDate(1900, undefined, 1), + i = parseSpecifier(d, specifier, string += "", 0), + week, day$1; + if (i != string.length) return null; -function defaultLocale$1(definition) { - locale$1 = formatLocale$1(definition); - exports.timeFormat = locale$1.format; - exports.timeParse = locale$1.parse; - exports.utcFormat = locale$1.utcFormat; - exports.utcParse = locale$1.utcParse; - return locale$1; -} + // If a UNIX timestamp is specified, return it. + if ("Q" in d) return new Date(d.Q); + if ("s" in d) return new Date(d.s * 1000 + ("L" in d ? d.L : 0)); -var isoSpecifier = "%Y-%m-%dT%H:%M:%S.%LZ"; + // If this is utcParse, never use the local timezone. + if (Z && !("Z" in d)) d.Z = 0; -function formatIsoNative(date) { - return date.toISOString(); -} + // The am-pm flag is 0 for AM, and 1 for PM. + if ("p" in d) d.H = d.H % 12 + d.p * 12; -var formatIso = Date.prototype.toISOString - ? formatIsoNative - : exports.utcFormat(isoSpecifier); + // If the month was not specified, inherit from the quarter. + if (d.m === undefined) d.m = "q" in d ? d.q : 0; -function parseIsoNative(string) { - var date = new Date(string); - return isNaN(date) ? null : date; -} + // Convert day-of-week and week-of-year to day-of-year. + if ("V" in d) { + if (d.V < 1 || d.V > 53) return null; + if (!("w" in d)) d.w = 1; + if ("Z" in d) { + week = utcDate(newDate(d.y, 0, 1)), day$1 = week.getUTCDay(); + week = day$1 > 4 || day$1 === 0 ? utcMonday.ceil(week) : utcMonday(week); + week = utcDay.offset(week, (d.V - 1) * 7); + d.y = week.getUTCFullYear(); + d.m = week.getUTCMonth(); + d.d = week.getUTCDate() + (d.w + 6) % 7; + } else { + week = localDate(newDate(d.y, 0, 1)), day$1 = week.getDay(); + week = day$1 > 4 || day$1 === 0 ? monday.ceil(week) : monday(week); + week = day.offset(week, (d.V - 1) * 7); + d.y = week.getFullYear(); + d.m = week.getMonth(); + d.d = week.getDate() + (d.w + 6) % 7; + } + } else if ("W" in d || "U" in d) { + if (!("w" in d)) d.w = "u" in d ? d.u % 7 : "W" in d ? 1 : 0; + day$1 = "Z" in d ? utcDate(newDate(d.y, 0, 1)).getUTCDay() : localDate(newDate(d.y, 0, 1)).getDay(); + d.m = 0; + d.d = "W" in d ? (d.w + 6) % 7 + d.W * 7 - (day$1 + 5) % 7 : d.w + d.U * 7 - (day$1 + 6) % 7; + } + + // If a time zone is specified, all fields are interpreted as UTC and then + // offset according to the specified time zone. + if ("Z" in d) { + d.H += d.Z / 100 | 0; + d.M += d.Z % 100; + return utcDate(d); + } -var parseIso = +new Date("2000-01-01T00:00:00.000Z") - ? parseIsoNative - : exports.utcParse(isoSpecifier); + // Otherwise, all fields are in local time. + return localDate(d); + }; + } -var durationSecond$1 = 1000, - durationMinute$1 = durationSecond$1 * 60, - durationHour$1 = durationMinute$1 * 60, - durationDay$1 = durationHour$1 * 24, - durationWeek$1 = durationDay$1 * 7, - durationMonth = durationDay$1 * 30, - durationYear = durationDay$1 * 365; + function parseSpecifier(d, specifier, string, j) { + var i = 0, + n = specifier.length, + m = string.length, + c, + parse; -function date$1(t) { - return new Date(t); -} + while (i < n) { + if (j >= m) return -1; + c = specifier.charCodeAt(i++); + if (c === 37) { + c = specifier.charAt(i++); + parse = parses[c in pads ? specifier.charAt(i++) : c]; + if (!parse || ((j = parse(d, string, j)) < 0)) return -1; + } else if (c != string.charCodeAt(j++)) { + return -1; + } + } -function number$3(t) { - return t instanceof Date ? +t : +new Date(+t); -} + return j; + } -function calendar(year, month, week, day, hour, minute, second, millisecond, format) { - var scale = continuous(identity$6, identity$6), - invert = scale.invert, - domain = scale.domain; + function parsePeriod(d, string, i) { + var n = periodRe.exec(string.slice(i)); + return n ? (d.p = periodLookup.get(n[0].toLowerCase()), i + n[0].length) : -1; + } - var formatMillisecond = format(".%L"), - formatSecond = format(":%S"), - formatMinute = format("%I:%M"), - formatHour = format("%I %p"), - formatDay = format("%a %d"), - formatWeek = format("%b %d"), - formatMonth = format("%B"), - formatYear = format("%Y"); + function parseShortWeekday(d, string, i) { + var n = shortWeekdayRe.exec(string.slice(i)); + return n ? (d.w = shortWeekdayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1; + } - var tickIntervals = [ - [second, 1, durationSecond$1], - [second, 5, 5 * durationSecond$1], - [second, 15, 15 * durationSecond$1], - [second, 30, 30 * durationSecond$1], - [minute, 1, durationMinute$1], - [minute, 5, 5 * durationMinute$1], - [minute, 15, 15 * durationMinute$1], - [minute, 30, 30 * durationMinute$1], - [ hour, 1, durationHour$1 ], - [ hour, 3, 3 * durationHour$1 ], - [ hour, 6, 6 * durationHour$1 ], - [ hour, 12, 12 * durationHour$1 ], - [ day, 1, durationDay$1 ], - [ day, 2, 2 * durationDay$1 ], - [ week, 1, durationWeek$1 ], - [ month, 1, durationMonth ], - [ month, 3, 3 * durationMonth ], - [ year, 1, durationYear ] - ]; + function parseWeekday(d, string, i) { + var n = weekdayRe.exec(string.slice(i)); + return n ? (d.w = weekdayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1; + } - function tickFormat(date) { - return (second(date) < date ? formatMillisecond - : minute(date) < date ? formatSecond - : hour(date) < date ? formatMinute - : day(date) < date ? formatHour - : month(date) < date ? (week(date) < date ? formatDay : formatWeek) - : year(date) < date ? formatMonth - : formatYear)(date); + function parseShortMonth(d, string, i) { + var n = shortMonthRe.exec(string.slice(i)); + return n ? (d.m = shortMonthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1; } - function tickInterval(interval, start, stop, step) { - if (interval == null) interval = 10; + function parseMonth(d, string, i) { + var n = monthRe.exec(string.slice(i)); + return n ? (d.m = monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1; + } - // If a desired tick count is specified, pick a reasonable tick interval - // based on the extent of the domain and a rough estimate of tick size. - // Otherwise, assume interval is already a time interval and use it. - if (typeof interval === "number") { - var target = Math.abs(stop - start) / interval, - i = bisector(function(i) { return i[2]; }).right(tickIntervals, target); - if (i === tickIntervals.length) { - step = tickStep(start / durationYear, stop / durationYear, interval); - interval = year; - } else if (i) { - i = tickIntervals[target / tickIntervals[i - 1][2] < tickIntervals[i][2] / target ? i - 1 : i]; - step = i[1]; - interval = i[0]; - } else { - step = Math.max(tickStep(start, stop, interval), 1); - interval = millisecond; - } - } + function parseLocaleDateTime(d, string, i) { + return parseSpecifier(d, locale_dateTime, string, i); + } - return step == null ? interval : interval.every(step); + function parseLocaleDate(d, string, i) { + return parseSpecifier(d, locale_date, string, i); } - scale.invert = function(y) { - return new Date(invert(y)); - }; + function parseLocaleTime(d, string, i) { + return parseSpecifier(d, locale_time, string, i); + } - scale.domain = function(_) { - return arguments.length ? domain(map$3.call(_, number$3)) : domain().map(date$1); - }; + function formatShortWeekday(d) { + return locale_shortWeekdays[d.getDay()]; + } - scale.ticks = function(interval, step) { - var d = domain(), - t0 = d[0], - t1 = d[d.length - 1], - r = t1 < t0, - t; - if (r) t = t0, t0 = t1, t1 = t; - t = tickInterval(interval, t0, t1, step); - t = t ? t.range(t0, t1 + 1) : []; // inclusive stop - return r ? t.reverse() : t; - }; + function formatWeekday(d) { + return locale_weekdays[d.getDay()]; + } - scale.tickFormat = function(count, specifier) { - return specifier == null ? tickFormat : format(specifier); - }; + function formatShortMonth(d) { + return locale_shortMonths[d.getMonth()]; + } - scale.nice = function(interval, step) { - var d = domain(); - return (interval = tickInterval(interval, d[0], d[d.length - 1], step)) - ? domain(nice(d, interval)) - : scale; - }; + function formatMonth(d) { + return locale_months[d.getMonth()]; + } - scale.copy = function() { - return copy(scale, calendar(year, month, week, day, hour, minute, second, millisecond, format)); - }; + function formatPeriod(d) { + return locale_periods[+(d.getHours() >= 12)]; + } - return scale; -} + function formatQuarter(d) { + return 1 + ~~(d.getMonth() / 3); + } -function time() { - return initRange.apply(calendar(year, month, sunday, day, hour, minute, second, millisecond, exports.timeFormat).domain([new Date(2000, 0, 1), new Date(2000, 0, 2)]), arguments); -} + function formatUTCShortWeekday(d) { + return locale_shortWeekdays[d.getUTCDay()]; + } -function utcTime() { - return initRange.apply(calendar(utcYear, utcMonth, utcSunday, utcDay, utcHour, utcMinute, second, millisecond, exports.utcFormat).domain([Date.UTC(2000, 0, 1), Date.UTC(2000, 0, 2)]), arguments); -} + function formatUTCWeekday(d) { + return locale_weekdays[d.getUTCDay()]; + } -function transformer$2() { - var x0 = 0, - x1 = 1, - t0, - t1, - k10, - transform, - interpolator = identity$6, - clamp = false, - unknown; + function formatUTCShortMonth(d) { + return locale_shortMonths[d.getUTCMonth()]; + } - function scale(x) { - return isNaN(x = +x) ? unknown : interpolator(k10 === 0 ? 0.5 : (x = (transform(x) - t0) * k10, clamp ? Math.max(0, Math.min(1, x)) : x)); + function formatUTCMonth(d) { + return locale_months[d.getUTCMonth()]; } - scale.domain = function(_) { - return arguments.length ? (t0 = transform(x0 = +_[0]), t1 = transform(x1 = +_[1]), k10 = t0 === t1 ? 0 : 1 / (t1 - t0), scale) : [x0, x1]; - }; + function formatUTCPeriod(d) { + return locale_periods[+(d.getUTCHours() >= 12)]; + } - scale.clamp = function(_) { - return arguments.length ? (clamp = !!_, scale) : clamp; - }; + function formatUTCQuarter(d) { + return 1 + ~~(d.getUTCMonth() / 3); + } - scale.interpolator = function(_) { - return arguments.length ? (interpolator = _, scale) : interpolator; + return { + format: function(specifier) { + var f = newFormat(specifier += "", formats); + f.toString = function() { return specifier; }; + return f; + }, + parse: function(specifier) { + var p = newParse(specifier += "", false); + p.toString = function() { return specifier; }; + return p; + }, + utcFormat: function(specifier) { + var f = newFormat(specifier += "", utcFormats); + f.toString = function() { return specifier; }; + return f; + }, + utcParse: function(specifier) { + var p = newParse(specifier += "", true); + p.toString = function() { return specifier; }; + return p; + } }; +} - scale.unknown = function(_) { - return arguments.length ? (unknown = _, scale) : unknown; - }; +var pads = {"-": "", "_": " ", "0": "0"}, + numberRe = /^\s*\d+/, // note: ignores next directive + percentRe = /^%/, + requoteRe = /[\\^$*+?|[\]().{}]/g; - return function(t) { - transform = t, t0 = t(x0), t1 = t(x1), k10 = t0 === t1 ? 0 : 1 / (t1 - t0); - return scale; - }; +function pad(value, fill, width) { + var sign = value < 0 ? "-" : "", + string = (sign ? -value : value) + "", + length = string.length; + return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string); } -function copy$1(source, target) { - return target - .domain(source.domain()) - .interpolator(source.interpolator()) - .clamp(source.clamp()) - .unknown(source.unknown()); +function requote(s) { + return s.replace(requoteRe, "\\$&"); } -function sequential() { - var scale = linearish(transformer$2()(identity$6)); - - scale.copy = function() { - return copy$1(scale, sequential()); - }; - - return initInterpolator.apply(scale, arguments); +function formatRe(names) { + return new RegExp("^(?:" + names.map(requote).join("|") + ")", "i"); } -function sequentialLog() { - var scale = loggish(transformer$2()).domain([1, 10]); - - scale.copy = function() { - return copy$1(scale, sequentialLog()).base(scale.base()); - }; +function formatLookup(names) { + return new Map(names.map((name, i) => [name.toLowerCase(), i])); +} - return initInterpolator.apply(scale, arguments); +function parseWeekdayNumberSunday(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 1)); + return n ? (d.w = +n[0], i + n[0].length) : -1; } -function sequentialSymlog() { - var scale = symlogish(transformer$2()); +function parseWeekdayNumberMonday(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 1)); + return n ? (d.u = +n[0], i + n[0].length) : -1; +} - scale.copy = function() { - return copy$1(scale, sequentialSymlog()).constant(scale.constant()); - }; +function parseWeekNumberSunday(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.U = +n[0], i + n[0].length) : -1; +} - return initInterpolator.apply(scale, arguments); +function parseWeekNumberISO(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.V = +n[0], i + n[0].length) : -1; } -function sequentialPow() { - var scale = powish(transformer$2()); +function parseWeekNumberMonday(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.W = +n[0], i + n[0].length) : -1; +} - scale.copy = function() { - return copy$1(scale, sequentialPow()).exponent(scale.exponent()); - }; +function parseFullYear(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 4)); + return n ? (d.y = +n[0], i + n[0].length) : -1; +} - return initInterpolator.apply(scale, arguments); +function parseYear(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.y = +n[0] + (+n[0] > 68 ? 1900 : 2000), i + n[0].length) : -1; } -function sequentialSqrt() { - return sequentialPow.apply(null, arguments).exponent(0.5); +function parseZone(d, string, i) { + var n = /^(Z)|([+-]\d\d)(?::?(\d\d))?/.exec(string.slice(i, i + 6)); + return n ? (d.Z = n[1] ? 0 : -(n[2] + (n[3] || "00")), i + n[0].length) : -1; } -function sequentialQuantile() { - var domain = [], - interpolator = identity$6; +function parseQuarter(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 1)); + return n ? (d.q = n[0] * 3 - 3, i + n[0].length) : -1; +} - function scale(x) { - if (!isNaN(x = +x)) return interpolator((bisectRight(domain, x) - 1) / (domain.length - 1)); - } +function parseMonthNumber(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.m = n[0] - 1, i + n[0].length) : -1; +} - scale.domain = function(_) { - if (!arguments.length) return domain.slice(); - domain = []; - for (var i = 0, n = _.length, d; i < n; ++i) if (d = _[i], d != null && !isNaN(d = +d)) domain.push(d); - domain.sort(ascending); - return scale; - }; +function parseDayOfMonth(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.d = +n[0], i + n[0].length) : -1; +} - scale.interpolator = function(_) { - return arguments.length ? (interpolator = _, scale) : interpolator; - }; +function parseDayOfYear(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 3)); + return n ? (d.m = 0, d.d = +n[0], i + n[0].length) : -1; +} - scale.copy = function() { - return sequentialQuantile(interpolator).domain(domain); - }; +function parseHour24(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.H = +n[0], i + n[0].length) : -1; +} - return initInterpolator.apply(scale, arguments); +function parseMinutes(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.M = +n[0], i + n[0].length) : -1; } -function transformer$3() { - var x0 = 0, - x1 = 0.5, - x2 = 1, - t0, - t1, - t2, - k10, - k21, - interpolator = identity$6, - transform, - clamp = false, - unknown; +function parseSeconds(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.S = +n[0], i + n[0].length) : -1; +} - function scale(x) { - return isNaN(x = +x) ? unknown : (x = 0.5 + ((x = +transform(x)) - t1) * (x < t1 ? k10 : k21), interpolator(clamp ? Math.max(0, Math.min(1, x)) : x)); - } +function parseMilliseconds(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 3)); + return n ? (d.L = +n[0], i + n[0].length) : -1; +} - scale.domain = function(_) { - return arguments.length ? (t0 = transform(x0 = +_[0]), t1 = transform(x1 = +_[1]), t2 = transform(x2 = +_[2]), k10 = t0 === t1 ? 0 : 0.5 / (t1 - t0), k21 = t1 === t2 ? 0 : 0.5 / (t2 - t1), scale) : [x0, x1, x2]; - }; +function parseMicroseconds(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 6)); + return n ? (d.L = Math.floor(n[0] / 1000), i + n[0].length) : -1; +} - scale.clamp = function(_) { - return arguments.length ? (clamp = !!_, scale) : clamp; - }; +function parseLiteralPercent(d, string, i) { + var n = percentRe.exec(string.slice(i, i + 1)); + return n ? i + n[0].length : -1; +} - scale.interpolator = function(_) { - return arguments.length ? (interpolator = _, scale) : interpolator; - }; +function parseUnixTimestamp(d, string, i) { + var n = numberRe.exec(string.slice(i)); + return n ? (d.Q = +n[0], i + n[0].length) : -1; +} - scale.unknown = function(_) { - return arguments.length ? (unknown = _, scale) : unknown; - }; +function parseUnixTimestampSeconds(d, string, i) { + var n = numberRe.exec(string.slice(i)); + return n ? (d.s = +n[0], i + n[0].length) : -1; +} - return function(t) { - transform = t, t0 = t(x0), t1 = t(x1), t2 = t(x2), k10 = t0 === t1 ? 0 : 0.5 / (t1 - t0), k21 = t1 === t2 ? 0 : 0.5 / (t2 - t1); - return scale; - }; +function formatDayOfMonth(d, p) { + return pad(d.getDate(), p, 2); } -function diverging() { - var scale = linearish(transformer$3()(identity$6)); +function formatHour24(d, p) { + return pad(d.getHours(), p, 2); +} - scale.copy = function() { - return copy$1(scale, diverging()); - }; +function formatHour12(d, p) { + return pad(d.getHours() % 12 || 12, p, 2); +} - return initInterpolator.apply(scale, arguments); +function formatDayOfYear(d, p) { + return pad(1 + day.count(year(d), d), p, 3); } -function divergingLog() { - var scale = loggish(transformer$3()).domain([0.1, 1, 10]); +function formatMilliseconds(d, p) { + return pad(d.getMilliseconds(), p, 3); +} - scale.copy = function() { - return copy$1(scale, divergingLog()).base(scale.base()); - }; +function formatMicroseconds(d, p) { + return formatMilliseconds(d, p) + "000"; +} - return initInterpolator.apply(scale, arguments); +function formatMonthNumber(d, p) { + return pad(d.getMonth() + 1, p, 2); } -function divergingSymlog() { - var scale = symlogish(transformer$3()); +function formatMinutes(d, p) { + return pad(d.getMinutes(), p, 2); +} - scale.copy = function() { - return copy$1(scale, divergingSymlog()).constant(scale.constant()); - }; +function formatSeconds(d, p) { + return pad(d.getSeconds(), p, 2); +} - return initInterpolator.apply(scale, arguments); +function formatWeekdayNumberMonday(d) { + var day = d.getDay(); + return day === 0 ? 7 : day; } -function divergingPow() { - var scale = powish(transformer$3()); +function formatWeekNumberSunday(d, p) { + return pad(sunday.count(year(d) - 1, d), p, 2); +} - scale.copy = function() { - return copy$1(scale, divergingPow()).exponent(scale.exponent()); - }; +function dISO(d) { + var day = d.getDay(); + return (day >= 4 || day === 0) ? thursday(d) : thursday.ceil(d); +} - return initInterpolator.apply(scale, arguments); +function formatWeekNumberISO(d, p) { + d = dISO(d); + return pad(thursday.count(year(d), d) + (year(d).getDay() === 4), p, 2); } -function divergingSqrt() { - return divergingPow.apply(null, arguments).exponent(0.5); +function formatWeekdayNumberSunday(d) { + return d.getDay(); } -function colors(specifier) { - var n = specifier.length / 6 | 0, colors = new Array(n), i = 0; - while (i < n) colors[i] = "#" + specifier.slice(i * 6, ++i * 6); - return colors; +function formatWeekNumberMonday(d, p) { + return pad(monday.count(year(d) - 1, d), p, 2); } -var category10 = colors("1f77b4ff7f0e2ca02cd627289467bd8c564be377c27f7f7fbcbd2217becf"); +function formatYear(d, p) { + return pad(d.getFullYear() % 100, p, 2); +} -var Accent = colors("7fc97fbeaed4fdc086ffff99386cb0f0027fbf5b17666666"); +function formatYearISO(d, p) { + d = dISO(d); + return pad(d.getFullYear() % 100, p, 2); +} -var Dark2 = colors("1b9e77d95f027570b3e7298a66a61ee6ab02a6761d666666"); +function formatFullYear(d, p) { + return pad(d.getFullYear() % 10000, p, 4); +} -var Paired = colors("a6cee31f78b4b2df8a33a02cfb9a99e31a1cfdbf6fff7f00cab2d66a3d9affff99b15928"); +function formatFullYearISO(d, p) { + var day = d.getDay(); + d = (day >= 4 || day === 0) ? thursday(d) : thursday.ceil(d); + return pad(d.getFullYear() % 10000, p, 4); +} -var Pastel1 = colors("fbb4aeb3cde3ccebc5decbe4fed9a6ffffcce5d8bdfddaecf2f2f2"); +function formatZone(d) { + var z = d.getTimezoneOffset(); + return (z > 0 ? "-" : (z *= -1, "+")) + + pad(z / 60 | 0, "0", 2) + + pad(z % 60, "0", 2); +} -var Pastel2 = colors("b3e2cdfdcdaccbd5e8f4cae4e6f5c9fff2aef1e2cccccccc"); +function formatUTCDayOfMonth(d, p) { + return pad(d.getUTCDate(), p, 2); +} -var Set1 = colors("e41a1c377eb84daf4a984ea3ff7f00ffff33a65628f781bf999999"); +function formatUTCHour24(d, p) { + return pad(d.getUTCHours(), p, 2); +} -var Set2 = colors("66c2a5fc8d628da0cbe78ac3a6d854ffd92fe5c494b3b3b3"); +function formatUTCHour12(d, p) { + return pad(d.getUTCHours() % 12 || 12, p, 2); +} -var Set3 = colors("8dd3c7ffffb3bebadafb807280b1d3fdb462b3de69fccde5d9d9d9bc80bdccebc5ffed6f"); +function formatUTCDayOfYear(d, p) { + return pad(1 + utcDay.count(utcYear(d), d), p, 3); +} -var Tableau10 = colors("4e79a7f28e2ce1575976b7b259a14fedc949af7aa1ff9da79c755fbab0ab"); +function formatUTCMilliseconds(d, p) { + return pad(d.getUTCMilliseconds(), p, 3); +} -function ramp(scheme) { - return rgbBasis(scheme[scheme.length - 1]); +function formatUTCMicroseconds(d, p) { + return formatUTCMilliseconds(d, p) + "000"; } -var scheme = new Array(3).concat( - "d8b365f5f5f55ab4ac", - "a6611adfc27d80cdc1018571", - "a6611adfc27df5f5f580cdc1018571", - "8c510ad8b365f6e8c3c7eae55ab4ac01665e", - "8c510ad8b365f6e8c3f5f5f5c7eae55ab4ac01665e", - "8c510abf812ddfc27df6e8c3c7eae580cdc135978f01665e", - "8c510abf812ddfc27df6e8c3f5f5f5c7eae580cdc135978f01665e", - "5430058c510abf812ddfc27df6e8c3c7eae580cdc135978f01665e003c30", - "5430058c510abf812ddfc27df6e8c3f5f5f5c7eae580cdc135978f01665e003c30" -).map(colors); +function formatUTCMonthNumber(d, p) { + return pad(d.getUTCMonth() + 1, p, 2); +} -var BrBG = ramp(scheme); +function formatUTCMinutes(d, p) { + return pad(d.getUTCMinutes(), p, 2); +} -var scheme$1 = new Array(3).concat( - "af8dc3f7f7f77fbf7b", - "7b3294c2a5cfa6dba0008837", - "7b3294c2a5cff7f7f7a6dba0008837", - "762a83af8dc3e7d4e8d9f0d37fbf7b1b7837", - "762a83af8dc3e7d4e8f7f7f7d9f0d37fbf7b1b7837", - "762a839970abc2a5cfe7d4e8d9f0d3a6dba05aae611b7837", - "762a839970abc2a5cfe7d4e8f7f7f7d9f0d3a6dba05aae611b7837", - "40004b762a839970abc2a5cfe7d4e8d9f0d3a6dba05aae611b783700441b", - "40004b762a839970abc2a5cfe7d4e8f7f7f7d9f0d3a6dba05aae611b783700441b" -).map(colors); +function formatUTCSeconds(d, p) { + return pad(d.getUTCSeconds(), p, 2); +} -var PRGn = ramp(scheme$1); +function formatUTCWeekdayNumberMonday(d) { + var dow = d.getUTCDay(); + return dow === 0 ? 7 : dow; +} -var scheme$2 = new Array(3).concat( - "e9a3c9f7f7f7a1d76a", - "d01c8bf1b6dab8e1864dac26", - "d01c8bf1b6daf7f7f7b8e1864dac26", - "c51b7de9a3c9fde0efe6f5d0a1d76a4d9221", - "c51b7de9a3c9fde0eff7f7f7e6f5d0a1d76a4d9221", - "c51b7dde77aef1b6dafde0efe6f5d0b8e1867fbc414d9221", - "c51b7dde77aef1b6dafde0eff7f7f7e6f5d0b8e1867fbc414d9221", - "8e0152c51b7dde77aef1b6dafde0efe6f5d0b8e1867fbc414d9221276419", - "8e0152c51b7dde77aef1b6dafde0eff7f7f7e6f5d0b8e1867fbc414d9221276419" -).map(colors); +function formatUTCWeekNumberSunday(d, p) { + return pad(utcSunday.count(utcYear(d) - 1, d), p, 2); +} -var PiYG = ramp(scheme$2); +function UTCdISO(d) { + var day = d.getUTCDay(); + return (day >= 4 || day === 0) ? utcThursday(d) : utcThursday.ceil(d); +} -var scheme$3 = new Array(3).concat( - "998ec3f7f7f7f1a340", - "5e3c99b2abd2fdb863e66101", - "5e3c99b2abd2f7f7f7fdb863e66101", - "542788998ec3d8daebfee0b6f1a340b35806", - "542788998ec3d8daebf7f7f7fee0b6f1a340b35806", - "5427888073acb2abd2d8daebfee0b6fdb863e08214b35806", - "5427888073acb2abd2d8daebf7f7f7fee0b6fdb863e08214b35806", - "2d004b5427888073acb2abd2d8daebfee0b6fdb863e08214b358067f3b08", - "2d004b5427888073acb2abd2d8daebf7f7f7fee0b6fdb863e08214b358067f3b08" -).map(colors); +function formatUTCWeekNumberISO(d, p) { + d = UTCdISO(d); + return pad(utcThursday.count(utcYear(d), d) + (utcYear(d).getUTCDay() === 4), p, 2); +} -var PuOr = ramp(scheme$3); +function formatUTCWeekdayNumberSunday(d) { + return d.getUTCDay(); +} -var scheme$4 = new Array(3).concat( - "ef8a62f7f7f767a9cf", - "ca0020f4a58292c5de0571b0", - "ca0020f4a582f7f7f792c5de0571b0", - "b2182bef8a62fddbc7d1e5f067a9cf2166ac", - "b2182bef8a62fddbc7f7f7f7d1e5f067a9cf2166ac", - "b2182bd6604df4a582fddbc7d1e5f092c5de4393c32166ac", - "b2182bd6604df4a582fddbc7f7f7f7d1e5f092c5de4393c32166ac", - "67001fb2182bd6604df4a582fddbc7d1e5f092c5de4393c32166ac053061", - "67001fb2182bd6604df4a582fddbc7f7f7f7d1e5f092c5de4393c32166ac053061" -).map(colors); +function formatUTCWeekNumberMonday(d, p) { + return pad(utcMonday.count(utcYear(d) - 1, d), p, 2); +} -var RdBu = ramp(scheme$4); +function formatUTCYear(d, p) { + return pad(d.getUTCFullYear() % 100, p, 2); +} -var scheme$5 = new Array(3).concat( - "ef8a62ffffff999999", - "ca0020f4a582bababa404040", - "ca0020f4a582ffffffbababa404040", - "b2182bef8a62fddbc7e0e0e09999994d4d4d", - "b2182bef8a62fddbc7ffffffe0e0e09999994d4d4d", - "b2182bd6604df4a582fddbc7e0e0e0bababa8787874d4d4d", - "b2182bd6604df4a582fddbc7ffffffe0e0e0bababa8787874d4d4d", - "67001fb2182bd6604df4a582fddbc7e0e0e0bababa8787874d4d4d1a1a1a", - "67001fb2182bd6604df4a582fddbc7ffffffe0e0e0bababa8787874d4d4d1a1a1a" -).map(colors); +function formatUTCYearISO(d, p) { + d = UTCdISO(d); + return pad(d.getUTCFullYear() % 100, p, 2); +} -var RdGy = ramp(scheme$5); +function formatUTCFullYear(d, p) { + return pad(d.getUTCFullYear() % 10000, p, 4); +} -var scheme$6 = new Array(3).concat( - "fc8d59ffffbf91bfdb", - "d7191cfdae61abd9e92c7bb6", - "d7191cfdae61ffffbfabd9e92c7bb6", - "d73027fc8d59fee090e0f3f891bfdb4575b4", - "d73027fc8d59fee090ffffbfe0f3f891bfdb4575b4", - "d73027f46d43fdae61fee090e0f3f8abd9e974add14575b4", - "d73027f46d43fdae61fee090ffffbfe0f3f8abd9e974add14575b4", - "a50026d73027f46d43fdae61fee090e0f3f8abd9e974add14575b4313695", - "a50026d73027f46d43fdae61fee090ffffbfe0f3f8abd9e974add14575b4313695" -).map(colors); +function formatUTCFullYearISO(d, p) { + var day = d.getUTCDay(); + d = (day >= 4 || day === 0) ? utcThursday(d) : utcThursday.ceil(d); + return pad(d.getUTCFullYear() % 10000, p, 4); +} -var RdYlBu = ramp(scheme$6); +function formatUTCZone() { + return "+0000"; +} -var scheme$7 = new Array(3).concat( - "fc8d59ffffbf91cf60", - "d7191cfdae61a6d96a1a9641", - "d7191cfdae61ffffbfa6d96a1a9641", - "d73027fc8d59fee08bd9ef8b91cf601a9850", - "d73027fc8d59fee08bffffbfd9ef8b91cf601a9850", - "d73027f46d43fdae61fee08bd9ef8ba6d96a66bd631a9850", - "d73027f46d43fdae61fee08bffffbfd9ef8ba6d96a66bd631a9850", - "a50026d73027f46d43fdae61fee08bd9ef8ba6d96a66bd631a9850006837", - "a50026d73027f46d43fdae61fee08bffffbfd9ef8ba6d96a66bd631a9850006837" -).map(colors); +function formatLiteralPercent() { + return "%"; +} -var RdYlGn = ramp(scheme$7); +function formatUnixTimestamp(d) { + return +d; +} -var scheme$8 = new Array(3).concat( - "fc8d59ffffbf99d594", - "d7191cfdae61abdda42b83ba", - "d7191cfdae61ffffbfabdda42b83ba", - "d53e4ffc8d59fee08be6f59899d5943288bd", - "d53e4ffc8d59fee08bffffbfe6f59899d5943288bd", - "d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd", - "d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd", - "9e0142d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd5e4fa2", - "9e0142d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd5e4fa2" -).map(colors); +function formatUnixTimestampSeconds(d) { + return Math.floor(+d / 1000); +} -var Spectral = ramp(scheme$8); +var locale; +exports.timeFormat = void 0; +exports.timeParse = void 0; +exports.utcFormat = void 0; +exports.utcParse = void 0; -var scheme$9 = new Array(3).concat( - "e5f5f999d8c92ca25f", - "edf8fbb2e2e266c2a4238b45", - "edf8fbb2e2e266c2a42ca25f006d2c", - "edf8fbccece699d8c966c2a42ca25f006d2c", - "edf8fbccece699d8c966c2a441ae76238b45005824", - "f7fcfde5f5f9ccece699d8c966c2a441ae76238b45005824", - "f7fcfde5f5f9ccece699d8c966c2a441ae76238b45006d2c00441b" -).map(colors); +defaultLocale({ + dateTime: "%x, %X", + date: "%-m/%-d/%Y", + time: "%-I:%M:%S %p", + periods: ["AM", "PM"], + days: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"], + shortDays: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"], + months: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"], + shortMonths: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"] +}); -var BuGn = ramp(scheme$9); +function defaultLocale(definition) { + locale = formatLocale(definition); + exports.timeFormat = locale.format; + exports.timeParse = locale.parse; + exports.utcFormat = locale.utcFormat; + exports.utcParse = locale.utcParse; + return locale; +} -var scheme$a = new Array(3).concat( - "e0ecf49ebcda8856a7", - "edf8fbb3cde38c96c688419d", - "edf8fbb3cde38c96c68856a7810f7c", - "edf8fbbfd3e69ebcda8c96c68856a7810f7c", - "edf8fbbfd3e69ebcda8c96c68c6bb188419d6e016b", - "f7fcfde0ecf4bfd3e69ebcda8c96c68c6bb188419d6e016b", - "f7fcfde0ecf4bfd3e69ebcda8c96c68c6bb188419d810f7c4d004b" -).map(colors); +var isoSpecifier = "%Y-%m-%dT%H:%M:%S.%LZ"; -var BuPu = ramp(scheme$a); +function formatIsoNative(date) { + return date.toISOString(); +} -var scheme$b = new Array(3).concat( - "e0f3dba8ddb543a2ca", - "f0f9e8bae4bc7bccc42b8cbe", - "f0f9e8bae4bc7bccc443a2ca0868ac", - "f0f9e8ccebc5a8ddb57bccc443a2ca0868ac", - "f0f9e8ccebc5a8ddb57bccc44eb3d32b8cbe08589e", - "f7fcf0e0f3dbccebc5a8ddb57bccc44eb3d32b8cbe08589e", - "f7fcf0e0f3dbccebc5a8ddb57bccc44eb3d32b8cbe0868ac084081" -).map(colors); +var formatIso = Date.prototype.toISOString + ? formatIsoNative + : exports.utcFormat(isoSpecifier); -var GnBu = ramp(scheme$b); +function parseIsoNative(string) { + var date = new Date(string); + return isNaN(date) ? null : date; +} -var scheme$c = new Array(3).concat( - "fee8c8fdbb84e34a33", - "fef0d9fdcc8afc8d59d7301f", - "fef0d9fdcc8afc8d59e34a33b30000", - "fef0d9fdd49efdbb84fc8d59e34a33b30000", - "fef0d9fdd49efdbb84fc8d59ef6548d7301f990000", - "fff7ecfee8c8fdd49efdbb84fc8d59ef6548d7301f990000", - "fff7ecfee8c8fdd49efdbb84fc8d59ef6548d7301fb300007f0000" -).map(colors); +var parseIso = +new Date("2000-01-01T00:00:00.000Z") + ? parseIsoNative + : exports.utcParse(isoSpecifier); -var OrRd = ramp(scheme$c); +var durationSecond = 1000, + durationMinute = durationSecond * 60, + durationHour = durationMinute * 60, + durationDay = durationHour * 24, + durationWeek = durationDay * 7, + durationMonth = durationDay * 30, + durationYear = durationDay * 365; -var scheme$d = new Array(3).concat( - "ece2f0a6bddb1c9099", - "f6eff7bdc9e167a9cf02818a", - "f6eff7bdc9e167a9cf1c9099016c59", - "f6eff7d0d1e6a6bddb67a9cf1c9099016c59", - "f6eff7d0d1e6a6bddb67a9cf3690c002818a016450", - "fff7fbece2f0d0d1e6a6bddb67a9cf3690c002818a016450", - "fff7fbece2f0d0d1e6a6bddb67a9cf3690c002818a016c59014636" -).map(colors); +function date(t) { + return new Date(t); +} -var PuBuGn = ramp(scheme$d); +function number(t) { + return t instanceof Date ? +t : +new Date(+t); +} -var scheme$e = new Array(3).concat( - "ece7f2a6bddb2b8cbe", - "f1eef6bdc9e174a9cf0570b0", - "f1eef6bdc9e174a9cf2b8cbe045a8d", - "f1eef6d0d1e6a6bddb74a9cf2b8cbe045a8d", - "f1eef6d0d1e6a6bddb74a9cf3690c00570b0034e7b", - "fff7fbece7f2d0d1e6a6bddb74a9cf3690c00570b0034e7b", - "fff7fbece7f2d0d1e6a6bddb74a9cf3690c00570b0045a8d023858" -).map(colors); +function calendar(year, month, week, day, hour, minute, second, millisecond, format) { + var scale = continuous(), + invert = scale.invert, + domain = scale.domain; -var PuBu = ramp(scheme$e); + var formatMillisecond = format(".%L"), + formatSecond = format(":%S"), + formatMinute = format("%I:%M"), + formatHour = format("%I %p"), + formatDay = format("%a %d"), + formatWeek = format("%b %d"), + formatMonth = format("%B"), + formatYear = format("%Y"); -var scheme$f = new Array(3).concat( - "e7e1efc994c7dd1c77", - "f1eef6d7b5d8df65b0ce1256", - "f1eef6d7b5d8df65b0dd1c77980043", - "f1eef6d4b9dac994c7df65b0dd1c77980043", - "f1eef6d4b9dac994c7df65b0e7298ace125691003f", - "f7f4f9e7e1efd4b9dac994c7df65b0e7298ace125691003f", - "f7f4f9e7e1efd4b9dac994c7df65b0e7298ace125698004367001f" -).map(colors); + var tickIntervals = [ + [second, 1, durationSecond], + [second, 5, 5 * durationSecond], + [second, 15, 15 * durationSecond], + [second, 30, 30 * durationSecond], + [minute, 1, durationMinute], + [minute, 5, 5 * durationMinute], + [minute, 15, 15 * durationMinute], + [minute, 30, 30 * durationMinute], + [ hour, 1, durationHour ], + [ hour, 3, 3 * durationHour ], + [ hour, 6, 6 * durationHour ], + [ hour, 12, 12 * durationHour ], + [ day, 1, durationDay ], + [ day, 2, 2 * durationDay ], + [ week, 1, durationWeek ], + [ month, 1, durationMonth ], + [ month, 3, 3 * durationMonth ], + [ year, 1, durationYear ] + ]; -var PuRd = ramp(scheme$f); + function tickFormat(date) { + return (second(date) < date ? formatMillisecond + : minute(date) < date ? formatSecond + : hour(date) < date ? formatMinute + : day(date) < date ? formatHour + : month(date) < date ? (week(date) < date ? formatDay : formatWeek) + : year(date) < date ? formatMonth + : formatYear)(date); + } -var scheme$g = new Array(3).concat( - "fde0ddfa9fb5c51b8a", - "feebe2fbb4b9f768a1ae017e", - "feebe2fbb4b9f768a1c51b8a7a0177", - "feebe2fcc5c0fa9fb5f768a1c51b8a7a0177", - "feebe2fcc5c0fa9fb5f768a1dd3497ae017e7a0177", - "fff7f3fde0ddfcc5c0fa9fb5f768a1dd3497ae017e7a0177", - "fff7f3fde0ddfcc5c0fa9fb5f768a1dd3497ae017e7a017749006a" -).map(colors); + function tickInterval(interval, start, stop) { + if (interval == null) interval = 10; -var RdPu = ramp(scheme$g); + // If a desired tick count is specified, pick a reasonable tick interval + // based on the extent of the domain and a rough estimate of tick size. + // Otherwise, assume interval is already a time interval and use it. + if (typeof interval === "number") { + var target = Math.abs(stop - start) / interval, + i = bisector(function(i) { return i[2]; }).right(tickIntervals, target), + step; + if (i === tickIntervals.length) { + step = tickStep(start / durationYear, stop / durationYear, interval); + interval = year; + } else if (i) { + i = tickIntervals[target / tickIntervals[i - 1][2] < tickIntervals[i][2] / target ? i - 1 : i]; + step = i[1]; + interval = i[0]; + } else { + step = Math.max(tickStep(start, stop, interval), 1); + interval = millisecond; + } + return interval.every(step); + } -var scheme$h = new Array(3).concat( - "edf8b17fcdbb2c7fb8", - "ffffcca1dab441b6c4225ea8", - "ffffcca1dab441b6c42c7fb8253494", - "ffffccc7e9b47fcdbb41b6c42c7fb8253494", - "ffffccc7e9b47fcdbb41b6c41d91c0225ea80c2c84", - "ffffd9edf8b1c7e9b47fcdbb41b6c41d91c0225ea80c2c84", - "ffffd9edf8b1c7e9b47fcdbb41b6c41d91c0225ea8253494081d58" -).map(colors); + return interval; + } -var YlGnBu = ramp(scheme$h); + scale.invert = function(y) { + return new Date(invert(y)); + }; -var scheme$i = new Array(3).concat( - "f7fcb9addd8e31a354", - "ffffccc2e69978c679238443", - "ffffccc2e69978c67931a354006837", - "ffffccd9f0a3addd8e78c67931a354006837", - "ffffccd9f0a3addd8e78c67941ab5d238443005a32", - "ffffe5f7fcb9d9f0a3addd8e78c67941ab5d238443005a32", - "ffffe5f7fcb9d9f0a3addd8e78c67941ab5d238443006837004529" -).map(colors); + scale.domain = function(_) { + return arguments.length ? domain(Array.from(_, number)) : domain().map(date); + }; -var YlGn = ramp(scheme$i); + scale.ticks = function(interval) { + var d = domain(), + t0 = d[0], + t1 = d[d.length - 1], + r = t1 < t0, + t; + if (r) t = t0, t0 = t1, t1 = t; + t = tickInterval(interval, t0, t1); + t = t ? t.range(t0, t1 + 1) : []; // inclusive stop + return r ? t.reverse() : t; + }; -var scheme$j = new Array(3).concat( - "fff7bcfec44fd95f0e", - "ffffd4fed98efe9929cc4c02", - "ffffd4fed98efe9929d95f0e993404", - "ffffd4fee391fec44ffe9929d95f0e993404", - "ffffd4fee391fec44ffe9929ec7014cc4c028c2d04", - "ffffe5fff7bcfee391fec44ffe9929ec7014cc4c028c2d04", - "ffffe5fff7bcfee391fec44ffe9929ec7014cc4c02993404662506" -).map(colors); + scale.tickFormat = function(count, specifier) { + return specifier == null ? tickFormat : format(specifier); + }; -var YlOrBr = ramp(scheme$j); + scale.nice = function(interval) { + var d = domain(); + return (interval = tickInterval(interval, d[0], d[d.length - 1])) + ? domain(nice(d, interval)) + : scale; + }; -var scheme$k = new Array(3).concat( - "ffeda0feb24cf03b20", - "ffffb2fecc5cfd8d3ce31a1c", - "ffffb2fecc5cfd8d3cf03b20bd0026", - "ffffb2fed976feb24cfd8d3cf03b20bd0026", - "ffffb2fed976feb24cfd8d3cfc4e2ae31a1cb10026", - "ffffccffeda0fed976feb24cfd8d3cfc4e2ae31a1cb10026", - "ffffccffeda0fed976feb24cfd8d3cfc4e2ae31a1cbd0026800026" -).map(colors); + scale.copy = function() { + return copy$1(scale, calendar(year, month, week, day, hour, minute, second, millisecond, format)); + }; -var YlOrRd = ramp(scheme$k); + return scale; +} -var scheme$l = new Array(3).concat( - "deebf79ecae13182bd", - "eff3ffbdd7e76baed62171b5", - "eff3ffbdd7e76baed63182bd08519c", - "eff3ffc6dbef9ecae16baed63182bd08519c", - "eff3ffc6dbef9ecae16baed64292c62171b5084594", - "f7fbffdeebf7c6dbef9ecae16baed64292c62171b5084594", - "f7fbffdeebf7c6dbef9ecae16baed64292c62171b508519c08306b" -).map(colors); +function time() { + return initRange.apply(calendar(year, month, sunday, day, hour, minute, second, millisecond, exports.timeFormat).domain([new Date(2000, 0, 1), new Date(2000, 0, 2)]), arguments); +} -var Blues = ramp(scheme$l); +function utcTime() { + return initRange.apply(calendar(utcYear, utcMonth, utcSunday, utcDay, utcHour, utcMinute, second, millisecond, exports.utcFormat).domain([Date.UTC(2000, 0, 1), Date.UTC(2000, 0, 2)]), arguments); +} -var scheme$m = new Array(3).concat( - "e5f5e0a1d99b31a354", - "edf8e9bae4b374c476238b45", - "edf8e9bae4b374c47631a354006d2c", - "edf8e9c7e9c0a1d99b74c47631a354006d2c", - "edf8e9c7e9c0a1d99b74c47641ab5d238b45005a32", - "f7fcf5e5f5e0c7e9c0a1d99b74c47641ab5d238b45005a32", - "f7fcf5e5f5e0c7e9c0a1d99b74c47641ab5d238b45006d2c00441b" -).map(colors); +function transformer$1() { + var x0 = 0, + x1 = 1, + t0, + t1, + k10, + transform, + interpolator = identity$3, + clamp = false, + unknown; -var Greens = ramp(scheme$m); + function scale(x) { + return x == null || isNaN(x = +x) ? unknown : interpolator(k10 === 0 ? 0.5 : (x = (transform(x) - t0) * k10, clamp ? Math.max(0, Math.min(1, x)) : x)); + } -var scheme$n = new Array(3).concat( - "f0f0f0bdbdbd636363", - "f7f7f7cccccc969696525252", - "f7f7f7cccccc969696636363252525", - "f7f7f7d9d9d9bdbdbd969696636363252525", - "f7f7f7d9d9d9bdbdbd969696737373525252252525", - "fffffff0f0f0d9d9d9bdbdbd969696737373525252252525", - "fffffff0f0f0d9d9d9bdbdbd969696737373525252252525000000" -).map(colors); + scale.domain = function(_) { + return arguments.length ? ([x0, x1] = _, t0 = transform(x0 = +x0), t1 = transform(x1 = +x1), k10 = t0 === t1 ? 0 : 1 / (t1 - t0), scale) : [x0, x1]; + }; -var Greys = ramp(scheme$n); + scale.clamp = function(_) { + return arguments.length ? (clamp = !!_, scale) : clamp; + }; -var scheme$o = new Array(3).concat( - "efedf5bcbddc756bb1", - "f2f0f7cbc9e29e9ac86a51a3", - "f2f0f7cbc9e29e9ac8756bb154278f", - "f2f0f7dadaebbcbddc9e9ac8756bb154278f", - "f2f0f7dadaebbcbddc9e9ac8807dba6a51a34a1486", - "fcfbfdefedf5dadaebbcbddc9e9ac8807dba6a51a34a1486", - "fcfbfdefedf5dadaebbcbddc9e9ac8807dba6a51a354278f3f007d" -).map(colors); + scale.interpolator = function(_) { + return arguments.length ? (interpolator = _, scale) : interpolator; + }; -var Purples = ramp(scheme$o); + function range(interpolate) { + return function(_) { + var r0, r1; + return arguments.length ? ([r0, r1] = _, interpolator = interpolate(r0, r1), scale) : [interpolator(0), interpolator(1)]; + }; + } -var scheme$p = new Array(3).concat( - "fee0d2fc9272de2d26", - "fee5d9fcae91fb6a4acb181d", - "fee5d9fcae91fb6a4ade2d26a50f15", - "fee5d9fcbba1fc9272fb6a4ade2d26a50f15", - "fee5d9fcbba1fc9272fb6a4aef3b2ccb181d99000d", - "fff5f0fee0d2fcbba1fc9272fb6a4aef3b2ccb181d99000d", - "fff5f0fee0d2fcbba1fc9272fb6a4aef3b2ccb181da50f1567000d" -).map(colors); + scale.range = range(interpolate$2); -var Reds = ramp(scheme$p); + scale.rangeRound = range(interpolateRound); -var scheme$q = new Array(3).concat( - "fee6cefdae6be6550d", - "feeddefdbe85fd8d3cd94701", - "feeddefdbe85fd8d3ce6550da63603", - "feeddefdd0a2fdae6bfd8d3ce6550da63603", - "feeddefdd0a2fdae6bfd8d3cf16913d948018c2d04", - "fff5ebfee6cefdd0a2fdae6bfd8d3cf16913d948018c2d04", - "fff5ebfee6cefdd0a2fdae6bfd8d3cf16913d94801a636037f2704" -).map(colors); + scale.unknown = function(_) { + return arguments.length ? (unknown = _, scale) : unknown; + }; -var Oranges = ramp(scheme$q); + return function(t) { + transform = t, t0 = t(x0), t1 = t(x1), k10 = t0 === t1 ? 0 : 1 / (t1 - t0); + return scale; + }; +} -function cividis(t) { - t = Math.max(0, Math.min(1, t)); - return "rgb(" - + Math.max(0, Math.min(255, Math.round(-4.54 - t * (35.34 - t * (2381.73 - t * (6402.7 - t * (7024.72 - t * 2710.57))))))) + ", " - + Math.max(0, Math.min(255, Math.round(32.49 + t * (170.73 + t * (52.82 - t * (131.46 - t * (176.58 - t * 67.37))))))) + ", " - + Math.max(0, Math.min(255, Math.round(81.24 + t * (442.36 - t * (2482.43 - t * (6167.24 - t * (6614.94 - t * 2475.67))))))) - + ")"; +function copy(source, target) { + return target + .domain(source.domain()) + .interpolator(source.interpolator()) + .clamp(source.clamp()) + .unknown(source.unknown()); } -var cubehelix$3 = cubehelixLong(cubehelix(300, 0.5, 0.0), cubehelix(-240, 0.5, 1.0)); +function sequential() { + var scale = linearish(transformer$1()(identity$3)); -var warm = cubehelixLong(cubehelix(-100, 0.75, 0.35), cubehelix(80, 1.50, 0.8)); + scale.copy = function() { + return copy(scale, sequential()); + }; -var cool = cubehelixLong(cubehelix(260, 0.75, 0.35), cubehelix(80, 1.50, 0.8)); + return initInterpolator.apply(scale, arguments); +} -var c = cubehelix(); +function sequentialLog() { + var scale = loggish(transformer$1()).domain([1, 10]); -function rainbow(t) { - if (t < 0 || t > 1) t -= Math.floor(t); - var ts = Math.abs(t - 0.5); - c.h = 360 * t - 100; - c.s = 1.5 - 1.5 * ts; - c.l = 0.8 - 0.9 * ts; - return c + ""; + scale.copy = function() { + return copy(scale, sequentialLog()).base(scale.base()); + }; + + return initInterpolator.apply(scale, arguments); } -var c$1 = rgb(), - pi_1_3 = Math.PI / 3, - pi_2_3 = Math.PI * 2 / 3; +function sequentialSymlog() { + var scale = symlogish(transformer$1()); -function sinebow(t) { - var x; - t = (0.5 - t) * Math.PI; - c$1.r = 255 * (x = Math.sin(t)) * x; - c$1.g = 255 * (x = Math.sin(t + pi_1_3)) * x; - c$1.b = 255 * (x = Math.sin(t + pi_2_3)) * x; - return c$1 + ""; -} + scale.copy = function() { + return copy(scale, sequentialSymlog()).constant(scale.constant()); + }; -function turbo(t) { - t = Math.max(0, Math.min(1, t)); - return "rgb(" - + Math.max(0, Math.min(255, Math.round(34.61 + t * (1172.33 - t * (10793.56 - t * (33300.12 - t * (38394.49 - t * 14825.05))))))) + ", " - + Math.max(0, Math.min(255, Math.round(23.31 + t * (557.33 + t * (1225.33 - t * (3574.96 - t * (1073.77 + t * 707.56))))))) + ", " - + Math.max(0, Math.min(255, Math.round(27.2 + t * (3211.1 - t * (15327.97 - t * (27814 - t * (22569.18 - t * 6838.66))))))) - + ")"; + return initInterpolator.apply(scale, arguments); } -function ramp$1(range) { - var n = range.length; - return function(t) { - return range[Math.max(0, Math.min(n - 1, Math.floor(t * n)))]; +function sequentialPow() { + var scale = powish(transformer$1()); + + scale.copy = function() { + return copy(scale, sequentialPow()).exponent(scale.exponent()); }; + + return initInterpolator.apply(scale, arguments); +} + +function sequentialSqrt() { + return sequentialPow.apply(null, arguments).exponent(0.5); } -var viridis = ramp$1(colors("44015444025645045745055946075a46085c460a5d460b5e470d60470e6147106347116447136548146748166848176948186a481a6c481b6d481c6e481d6f481f70482071482173482374482475482576482677482878482979472a7a472c7a472d7b472e7c472f7d46307e46327e46337f463480453581453781453882443983443a83443b84433d84433e85423f854240864241864142874144874045884046883f47883f48893e49893e4a893e4c8a3d4d8a3d4e8a3c4f8a3c508b3b518b3b528b3a538b3a548c39558c39568c38588c38598c375a8c375b8d365c8d365d8d355e8d355f8d34608d34618d33628d33638d32648e32658e31668e31678e31688e30698e306a8e2f6b8e2f6c8e2e6d8e2e6e8e2e6f8e2d708e2d718e2c718e2c728e2c738e2b748e2b758e2a768e2a778e2a788e29798e297a8e297b8e287c8e287d8e277e8e277f8e27808e26818e26828e26828e25838e25848e25858e24868e24878e23888e23898e238a8d228b8d228c8d228d8d218e8d218f8d21908d21918c20928c20928c20938c1f948c1f958b1f968b1f978b1f988b1f998a1f9a8a1e9b8a1e9c891e9d891f9e891f9f881fa0881fa1881fa1871fa28720a38620a48621a58521a68522a78522a88423a98324aa8325ab8225ac8226ad8127ad8128ae8029af7f2ab07f2cb17e2db27d2eb37c2fb47c31b57b32b67a34b67935b77937b87838b9773aba763bbb753dbc743fbc7340bd7242be7144bf7046c06f48c16e4ac16d4cc26c4ec36b50c46a52c56954c56856c66758c7655ac8645cc8635ec96260ca6063cb5f65cb5e67cc5c69cd5b6ccd5a6ece5870cf5773d05675d05477d1537ad1517cd2507fd34e81d34d84d44b86d54989d5488bd6468ed64590d74393d74195d84098d83e9bd93c9dd93ba0da39a2da37a5db36a8db34aadc32addc30b0dd2fb2dd2db5de2bb8de29bade28bddf26c0df25c2df23c5e021c8e020cae11fcde11dd0e11cd2e21bd5e21ad8e219dae319dde318dfe318e2e418e5e419e7e419eae51aece51befe51cf1e51df4e61ef6e620f8e621fbe723fde725")); +function sequentialQuantile() { + var domain = [], + interpolator = identity$3; + + function scale(x) { + if (x != null && !isNaN(x = +x)) return interpolator((bisectRight(domain, x, 1) - 1) / (domain.length - 1)); + } + + scale.domain = function(_) { + if (!arguments.length) return domain.slice(); + domain = []; + for (let d of _) if (d != null && !isNaN(d = +d)) domain.push(d); + domain.sort(ascending$3); + return scale; + }; -var magma = ramp$1(colors("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")); + scale.interpolator = function(_) { + return arguments.length ? (interpolator = _, scale) : interpolator; + }; -var inferno = ramp$1(colors("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")); + scale.range = function() { + return domain.map((d, i) => interpolator(i / (domain.length - 1))); + }; -var plasma = ramp$1(colors("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")); + scale.quantiles = function(n) { + return Array.from({length: n + 1}, (_, i) => quantile$1(domain, i / n)); + }; -function constant$b(x) { - return function constant() { - return x; + scale.copy = function() { + return sequentialQuantile(interpolator).domain(domain); }; + + return initInterpolator.apply(scale, arguments); } -var abs$1 = Math.abs; -var atan2$1 = Math.atan2; -var cos$2 = Math.cos; -var max$2 = Math.max; -var min$1 = Math.min; -var sin$2 = Math.sin; -var sqrt$2 = Math.sqrt; +function transformer() { + var x0 = 0, + x1 = 0.5, + x2 = 1, + s = 1, + t0, + t1, + t2, + k10, + k21, + interpolator = identity$3, + transform, + clamp = false, + unknown; + + function scale(x) { + return isNaN(x = +x) ? unknown : (x = 0.5 + ((x = +transform(x)) - t1) * (s * x < s * t1 ? k10 : k21), interpolator(clamp ? Math.max(0, Math.min(1, x)) : x)); + } -var epsilon$3 = 1e-12; -var pi$4 = Math.PI; -var halfPi$3 = pi$4 / 2; -var tau$4 = 2 * pi$4; + scale.domain = function(_) { + return arguments.length ? ([x0, x1, x2] = _, t0 = transform(x0 = +x0), t1 = transform(x1 = +x1), t2 = transform(x2 = +x2), k10 = t0 === t1 ? 0 : 0.5 / (t1 - t0), k21 = t1 === t2 ? 0 : 0.5 / (t2 - t1), s = t1 < t0 ? -1 : 1, scale) : [x0, x1, x2]; + }; -function acos$1(x) { - return x > 1 ? 0 : x < -1 ? pi$4 : Math.acos(x); -} + scale.clamp = function(_) { + return arguments.length ? (clamp = !!_, scale) : clamp; + }; -function asin$1(x) { - return x >= 1 ? halfPi$3 : x <= -1 ? -halfPi$3 : Math.asin(x); -} + scale.interpolator = function(_) { + return arguments.length ? (interpolator = _, scale) : interpolator; + }; -function arcInnerRadius(d) { - return d.innerRadius; -} + function range(interpolate) { + return function(_) { + var r0, r1, r2; + return arguments.length ? ([r0, r1, r2] = _, interpolator = piecewise(interpolate, [r0, r1, r2]), scale) : [interpolator(0), interpolator(0.5), interpolator(1)]; + }; + } -function arcOuterRadius(d) { - return d.outerRadius; -} + scale.range = range(interpolate$2); -function arcStartAngle(d) { - return d.startAngle; + scale.rangeRound = range(interpolateRound); + + scale.unknown = function(_) { + return arguments.length ? (unknown = _, scale) : unknown; + }; + + return function(t) { + transform = t, t0 = t(x0), t1 = t(x1), t2 = t(x2), k10 = t0 === t1 ? 0 : 0.5 / (t1 - t0), k21 = t1 === t2 ? 0 : 0.5 / (t2 - t1), s = t1 < t0 ? -1 : 1; + return scale; + }; } -function arcEndAngle(d) { - return d.endAngle; -} +function diverging$1() { + var scale = linearish(transformer()(identity$3)); -function arcPadAngle(d) { - return d && d.padAngle; // Note: optional! -} + scale.copy = function() { + return copy(scale, diverging$1()); + }; -function intersect(x0, y0, x1, y1, x2, y2, x3, y3) { - var x10 = x1 - x0, y10 = y1 - y0, - x32 = x3 - x2, y32 = y3 - y2, - t = y32 * x10 - x32 * y10; - if (t * t < epsilon$3) return; - t = (x32 * (y0 - y2) - y32 * (x0 - x2)) / t; - return [x0 + t * x10, y0 + t * y10]; + return initInterpolator.apply(scale, arguments); } -// Compute perpendicular offset line of length rc. -// http://mathworld.wolfram.com/Circle-LineIntersection.html -function cornerTangents(x0, y0, x1, y1, r1, rc, cw) { - var x01 = x0 - x1, - y01 = y0 - y1, - lo = (cw ? rc : -rc) / sqrt$2(x01 * x01 + y01 * y01), - ox = lo * y01, - oy = -lo * x01, - x11 = x0 + ox, - y11 = y0 + oy, - x10 = x1 + ox, - y10 = y1 + oy, - x00 = (x11 + x10) / 2, - y00 = (y11 + y10) / 2, - dx = x10 - x11, - dy = y10 - y11, - d2 = dx * dx + dy * dy, - r = r1 - rc, - D = x11 * y10 - x10 * y11, - d = (dy < 0 ? -1 : 1) * sqrt$2(max$2(0, r * r * d2 - D * D)), - cx0 = (D * dy - dx * d) / d2, - cy0 = (-D * dx - dy * d) / d2, - cx1 = (D * dy + dx * d) / d2, - cy1 = (-D * dx + dy * d) / d2, - dx0 = cx0 - x00, - dy0 = cy0 - y00, - dx1 = cx1 - x00, - dy1 = cy1 - y00; - - // Pick the closer of the two intersection points. - // TODO Is there a faster way to determine which intersection to use? - if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1; +function divergingLog() { + var scale = loggish(transformer()).domain([0.1, 1, 10]); - return { - cx: cx0, - cy: cy0, - x01: -ox, - y01: -oy, - x11: cx0 * (r1 / r - 1), - y11: cy0 * (r1 / r - 1) + scale.copy = function() { + return copy(scale, divergingLog()).base(scale.base()); }; + + return initInterpolator.apply(scale, arguments); } -function arc() { - var innerRadius = arcInnerRadius, - outerRadius = arcOuterRadius, - cornerRadius = constant$b(0), - padRadius = null, - startAngle = arcStartAngle, - endAngle = arcEndAngle, - padAngle = arcPadAngle, - context = null; +function divergingSymlog() { + var scale = symlogish(transformer()); - function arc() { - var buffer, - r, - r0 = +innerRadius.apply(this, arguments), - r1 = +outerRadius.apply(this, arguments), - a0 = startAngle.apply(this, arguments) - halfPi$3, - a1 = endAngle.apply(this, arguments) - halfPi$3, - da = abs$1(a1 - a0), - cw = a1 > a0; + scale.copy = function() { + return copy(scale, divergingSymlog()).constant(scale.constant()); + }; - if (!context) context = buffer = path(); + return initInterpolator.apply(scale, arguments); +} - // Ensure that the outer radius is always larger than the inner radius. - if (r1 < r0) r = r1, r1 = r0, r0 = r; +function divergingPow() { + var scale = powish(transformer()); - // Is it a point? - if (!(r1 > epsilon$3)) context.moveTo(0, 0); + scale.copy = function() { + return copy(scale, divergingPow()).exponent(scale.exponent()); + }; - // Or is it a circle or annulus? - else if (da > tau$4 - epsilon$3) { - context.moveTo(r1 * cos$2(a0), r1 * sin$2(a0)); - context.arc(0, 0, r1, a0, a1, !cw); - if (r0 > epsilon$3) { - context.moveTo(r0 * cos$2(a1), r0 * sin$2(a1)); - context.arc(0, 0, r0, a1, a0, cw); - } - } + return initInterpolator.apply(scale, arguments); +} - // Or is it a circular or annular sector? - else { - var a01 = a0, - a11 = a1, - a00 = a0, - a10 = a1, - da0 = da, - da1 = da, - ap = padAngle.apply(this, arguments) / 2, - rp = (ap > epsilon$3) && (padRadius ? +padRadius.apply(this, arguments) : sqrt$2(r0 * r0 + r1 * r1)), - rc = min$1(abs$1(r1 - r0) / 2, +cornerRadius.apply(this, arguments)), - rc0 = rc, - rc1 = rc, - t0, - t1; +function divergingSqrt() { + return divergingPow.apply(null, arguments).exponent(0.5); +} - // Apply padding? Note that since r1 ≥ r0, da1 ≥ da0. - if (rp > epsilon$3) { - var p0 = asin$1(rp / r0 * sin$2(ap)), - p1 = asin$1(rp / r1 * sin$2(ap)); - if ((da0 -= p0 * 2) > epsilon$3) p0 *= (cw ? 1 : -1), a00 += p0, a10 -= p0; - else da0 = 0, a00 = a10 = (a0 + a1) / 2; - if ((da1 -= p1 * 2) > epsilon$3) p1 *= (cw ? 1 : -1), a01 += p1, a11 -= p1; - else da1 = 0, a01 = a11 = (a0 + a1) / 2; - } +function colors(specifier) { + var n = specifier.length / 6 | 0, colors = new Array(n), i = 0; + while (i < n) colors[i] = "#" + specifier.slice(i * 6, ++i * 6); + return colors; +} - var x01 = r1 * cos$2(a01), - y01 = r1 * sin$2(a01), - x10 = r0 * cos$2(a10), - y10 = r0 * sin$2(a10); +var category10 = colors("1f77b4ff7f0e2ca02cd627289467bd8c564be377c27f7f7fbcbd2217becf"); - // Apply rounded corners? - if (rc > epsilon$3) { - var x11 = r1 * cos$2(a11), - y11 = r1 * sin$2(a11), - x00 = r0 * cos$2(a00), - y00 = r0 * sin$2(a00), - oc; +var Accent = colors("7fc97fbeaed4fdc086ffff99386cb0f0027fbf5b17666666"); - // Restrict the corner radius according to the sector angle. - if (da < pi$4 && (oc = intersect(x01, y01, x00, y00, x11, y11, x10, y10))) { - var ax = x01 - oc[0], - ay = y01 - oc[1], - bx = x11 - oc[0], - by = y11 - oc[1], - kc = 1 / sin$2(acos$1((ax * bx + ay * by) / (sqrt$2(ax * ax + ay * ay) * sqrt$2(bx * bx + by * by))) / 2), - lc = sqrt$2(oc[0] * oc[0] + oc[1] * oc[1]); - rc0 = min$1(rc, (r0 - lc) / (kc - 1)); - rc1 = min$1(rc, (r1 - lc) / (kc + 1)); - } - } +var Dark2 = colors("1b9e77d95f027570b3e7298a66a61ee6ab02a6761d666666"); - // Is the sector collapsed to a line? - if (!(da1 > epsilon$3)) context.moveTo(x01, y01); +var Paired = colors("a6cee31f78b4b2df8a33a02cfb9a99e31a1cfdbf6fff7f00cab2d66a3d9affff99b15928"); - // Does the sector’s outer ring have rounded corners? - else if (rc1 > epsilon$3) { - t0 = cornerTangents(x00, y00, x01, y01, r1, rc1, cw); - t1 = cornerTangents(x11, y11, x10, y10, r1, rc1, cw); +var Pastel1 = colors("fbb4aeb3cde3ccebc5decbe4fed9a6ffffcce5d8bdfddaecf2f2f2"); - context.moveTo(t0.cx + t0.x01, t0.cy + t0.y01); +var Pastel2 = colors("b3e2cdfdcdaccbd5e8f4cae4e6f5c9fff2aef1e2cccccccc"); - // Have the corners merged? - if (rc1 < rc) context.arc(t0.cx, t0.cy, rc1, atan2$1(t0.y01, t0.x01), atan2$1(t1.y01, t1.x01), !cw); +var Set1 = colors("e41a1c377eb84daf4a984ea3ff7f00ffff33a65628f781bf999999"); - // Otherwise, draw the two corners and the ring. - else { - context.arc(t0.cx, t0.cy, rc1, atan2$1(t0.y01, t0.x01), atan2$1(t0.y11, t0.x11), !cw); - context.arc(0, 0, r1, atan2$1(t0.cy + t0.y11, t0.cx + t0.x11), atan2$1(t1.cy + t1.y11, t1.cx + t1.x11), !cw); - context.arc(t1.cx, t1.cy, rc1, atan2$1(t1.y11, t1.x11), atan2$1(t1.y01, t1.x01), !cw); - } - } +var Set2 = colors("66c2a5fc8d628da0cbe78ac3a6d854ffd92fe5c494b3b3b3"); - // Or is the outer ring just a circular arc? - else context.moveTo(x01, y01), context.arc(0, 0, r1, a01, a11, !cw); +var Set3 = colors("8dd3c7ffffb3bebadafb807280b1d3fdb462b3de69fccde5d9d9d9bc80bdccebc5ffed6f"); - // Is there no inner ring, and it’s a circular sector? - // Or perhaps it’s an annular sector collapsed due to padding? - if (!(r0 > epsilon$3) || !(da0 > epsilon$3)) context.lineTo(x10, y10); +var Tableau10 = colors("4e79a7f28e2ce1575976b7b259a14fedc949af7aa1ff9da79c755fbab0ab"); - // Does the sector’s inner ring (or point) have rounded corners? - else if (rc0 > epsilon$3) { - t0 = cornerTangents(x10, y10, x11, y11, r0, -rc0, cw); - t1 = cornerTangents(x01, y01, x00, y00, r0, -rc0, cw); +var ramp$1 = scheme => rgbBasis(scheme[scheme.length - 1]); - context.lineTo(t0.cx + t0.x01, t0.cy + t0.y01); +var scheme$q = new Array(3).concat( + "d8b365f5f5f55ab4ac", + "a6611adfc27d80cdc1018571", + "a6611adfc27df5f5f580cdc1018571", + "8c510ad8b365f6e8c3c7eae55ab4ac01665e", + "8c510ad8b365f6e8c3f5f5f5c7eae55ab4ac01665e", + "8c510abf812ddfc27df6e8c3c7eae580cdc135978f01665e", + "8c510abf812ddfc27df6e8c3f5f5f5c7eae580cdc135978f01665e", + "5430058c510abf812ddfc27df6e8c3c7eae580cdc135978f01665e003c30", + "5430058c510abf812ddfc27df6e8c3f5f5f5c7eae580cdc135978f01665e003c30" +).map(colors); - // Have the corners merged? - if (rc0 < rc) context.arc(t0.cx, t0.cy, rc0, atan2$1(t0.y01, t0.x01), atan2$1(t1.y01, t1.x01), !cw); +var BrBG = ramp$1(scheme$q); - // Otherwise, draw the two corners and the ring. - else { - context.arc(t0.cx, t0.cy, rc0, atan2$1(t0.y01, t0.x01), atan2$1(t0.y11, t0.x11), !cw); - context.arc(0, 0, r0, atan2$1(t0.cy + t0.y11, t0.cx + t0.x11), atan2$1(t1.cy + t1.y11, t1.cx + t1.x11), cw); - context.arc(t1.cx, t1.cy, rc0, atan2$1(t1.y11, t1.x11), atan2$1(t1.y01, t1.x01), !cw); - } - } +var scheme$p = new Array(3).concat( + "af8dc3f7f7f77fbf7b", + "7b3294c2a5cfa6dba0008837", + "7b3294c2a5cff7f7f7a6dba0008837", + "762a83af8dc3e7d4e8d9f0d37fbf7b1b7837", + "762a83af8dc3e7d4e8f7f7f7d9f0d37fbf7b1b7837", + "762a839970abc2a5cfe7d4e8d9f0d3a6dba05aae611b7837", + "762a839970abc2a5cfe7d4e8f7f7f7d9f0d3a6dba05aae611b7837", + "40004b762a839970abc2a5cfe7d4e8d9f0d3a6dba05aae611b783700441b", + "40004b762a839970abc2a5cfe7d4e8f7f7f7d9f0d3a6dba05aae611b783700441b" +).map(colors); - // Or is the inner ring just a circular arc? - else context.arc(0, 0, r0, a10, a00, cw); - } +var PRGn = ramp$1(scheme$p); - context.closePath(); +var scheme$o = new Array(3).concat( + "e9a3c9f7f7f7a1d76a", + "d01c8bf1b6dab8e1864dac26", + "d01c8bf1b6daf7f7f7b8e1864dac26", + "c51b7de9a3c9fde0efe6f5d0a1d76a4d9221", + "c51b7de9a3c9fde0eff7f7f7e6f5d0a1d76a4d9221", + "c51b7dde77aef1b6dafde0efe6f5d0b8e1867fbc414d9221", + "c51b7dde77aef1b6dafde0eff7f7f7e6f5d0b8e1867fbc414d9221", + "8e0152c51b7dde77aef1b6dafde0efe6f5d0b8e1867fbc414d9221276419", + "8e0152c51b7dde77aef1b6dafde0eff7f7f7e6f5d0b8e1867fbc414d9221276419" +).map(colors); - if (buffer) return context = null, buffer + "" || null; - } +var PiYG = ramp$1(scheme$o); - arc.centroid = function() { - var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, - a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - pi$4 / 2; - return [cos$2(a) * r, sin$2(a) * r]; - }; +var scheme$n = new Array(3).concat( + "998ec3f7f7f7f1a340", + "5e3c99b2abd2fdb863e66101", + "5e3c99b2abd2f7f7f7fdb863e66101", + "542788998ec3d8daebfee0b6f1a340b35806", + "542788998ec3d8daebf7f7f7fee0b6f1a340b35806", + "5427888073acb2abd2d8daebfee0b6fdb863e08214b35806", + "5427888073acb2abd2d8daebf7f7f7fee0b6fdb863e08214b35806", + "2d004b5427888073acb2abd2d8daebfee0b6fdb863e08214b358067f3b08", + "2d004b5427888073acb2abd2d8daebf7f7f7fee0b6fdb863e08214b358067f3b08" +).map(colors); - arc.innerRadius = function(_) { - return arguments.length ? (innerRadius = typeof _ === "function" ? _ : constant$b(+_), arc) : innerRadius; - }; +var PuOr = ramp$1(scheme$n); - arc.outerRadius = function(_) { - return arguments.length ? (outerRadius = typeof _ === "function" ? _ : constant$b(+_), arc) : outerRadius; - }; +var scheme$m = new Array(3).concat( + "ef8a62f7f7f767a9cf", + "ca0020f4a58292c5de0571b0", + "ca0020f4a582f7f7f792c5de0571b0", + "b2182bef8a62fddbc7d1e5f067a9cf2166ac", + "b2182bef8a62fddbc7f7f7f7d1e5f067a9cf2166ac", + "b2182bd6604df4a582fddbc7d1e5f092c5de4393c32166ac", + "b2182bd6604df4a582fddbc7f7f7f7d1e5f092c5de4393c32166ac", + "67001fb2182bd6604df4a582fddbc7d1e5f092c5de4393c32166ac053061", + "67001fb2182bd6604df4a582fddbc7f7f7f7d1e5f092c5de4393c32166ac053061" +).map(colors); - arc.cornerRadius = function(_) { - return arguments.length ? (cornerRadius = typeof _ === "function" ? _ : constant$b(+_), arc) : cornerRadius; - }; +var RdBu = ramp$1(scheme$m); - arc.padRadius = function(_) { - return arguments.length ? (padRadius = _ == null ? null : typeof _ === "function" ? _ : constant$b(+_), arc) : padRadius; - }; +var scheme$l = new Array(3).concat( + "ef8a62ffffff999999", + "ca0020f4a582bababa404040", + "ca0020f4a582ffffffbababa404040", + "b2182bef8a62fddbc7e0e0e09999994d4d4d", + "b2182bef8a62fddbc7ffffffe0e0e09999994d4d4d", + "b2182bd6604df4a582fddbc7e0e0e0bababa8787874d4d4d", + "b2182bd6604df4a582fddbc7ffffffe0e0e0bababa8787874d4d4d", + "67001fb2182bd6604df4a582fddbc7e0e0e0bababa8787874d4d4d1a1a1a", + "67001fb2182bd6604df4a582fddbc7ffffffe0e0e0bababa8787874d4d4d1a1a1a" +).map(colors); - arc.startAngle = function(_) { - return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$b(+_), arc) : startAngle; - }; +var RdGy = ramp$1(scheme$l); - arc.endAngle = function(_) { - return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$b(+_), arc) : endAngle; - }; +var scheme$k = new Array(3).concat( + "fc8d59ffffbf91bfdb", + "d7191cfdae61abd9e92c7bb6", + "d7191cfdae61ffffbfabd9e92c7bb6", + "d73027fc8d59fee090e0f3f891bfdb4575b4", + "d73027fc8d59fee090ffffbfe0f3f891bfdb4575b4", + "d73027f46d43fdae61fee090e0f3f8abd9e974add14575b4", + "d73027f46d43fdae61fee090ffffbfe0f3f8abd9e974add14575b4", + "a50026d73027f46d43fdae61fee090e0f3f8abd9e974add14575b4313695", + "a50026d73027f46d43fdae61fee090ffffbfe0f3f8abd9e974add14575b4313695" +).map(colors); + +var RdYlBu = ramp$1(scheme$k); + +var scheme$j = new Array(3).concat( + "fc8d59ffffbf91cf60", + "d7191cfdae61a6d96a1a9641", + "d7191cfdae61ffffbfa6d96a1a9641", + "d73027fc8d59fee08bd9ef8b91cf601a9850", + "d73027fc8d59fee08bffffbfd9ef8b91cf601a9850", + "d73027f46d43fdae61fee08bd9ef8ba6d96a66bd631a9850", + "d73027f46d43fdae61fee08bffffbfd9ef8ba6d96a66bd631a9850", + "a50026d73027f46d43fdae61fee08bd9ef8ba6d96a66bd631a9850006837", + "a50026d73027f46d43fdae61fee08bffffbfd9ef8ba6d96a66bd631a9850006837" +).map(colors); - arc.padAngle = function(_) { - return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant$b(+_), arc) : padAngle; - }; +var RdYlGn = ramp$1(scheme$j); - arc.context = function(_) { - return arguments.length ? ((context = _ == null ? null : _), arc) : context; - }; +var scheme$i = new Array(3).concat( + "fc8d59ffffbf99d594", + "d7191cfdae61abdda42b83ba", + "d7191cfdae61ffffbfabdda42b83ba", + "d53e4ffc8d59fee08be6f59899d5943288bd", + "d53e4ffc8d59fee08bffffbfe6f59899d5943288bd", + "d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd", + "d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd", + "9e0142d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd5e4fa2", + "9e0142d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd5e4fa2" +).map(colors); - return arc; -} +var Spectral = ramp$1(scheme$i); -function Linear(context) { - this._context = context; -} +var scheme$h = new Array(3).concat( + "e5f5f999d8c92ca25f", + "edf8fbb2e2e266c2a4238b45", + "edf8fbb2e2e266c2a42ca25f006d2c", + "edf8fbccece699d8c966c2a42ca25f006d2c", + "edf8fbccece699d8c966c2a441ae76238b45005824", + "f7fcfde5f5f9ccece699d8c966c2a441ae76238b45005824", + "f7fcfde5f5f9ccece699d8c966c2a441ae76238b45006d2c00441b" +).map(colors); -Linear.prototype = { - areaStart: function() { - this._line = 0; - }, - areaEnd: function() { - this._line = NaN; - }, - lineStart: function() { - this._point = 0; - }, - lineEnd: function() { - if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); - this._line = 1 - this._line; - }, - point: function(x, y) { - x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; - case 1: this._point = 2; // proceed - default: this._context.lineTo(x, y); break; - } - } -}; +var BuGn = ramp$1(scheme$h); -function curveLinear(context) { - return new Linear(context); -} +var scheme$g = new Array(3).concat( + "e0ecf49ebcda8856a7", + "edf8fbb3cde38c96c688419d", + "edf8fbb3cde38c96c68856a7810f7c", + "edf8fbbfd3e69ebcda8c96c68856a7810f7c", + "edf8fbbfd3e69ebcda8c96c68c6bb188419d6e016b", + "f7fcfde0ecf4bfd3e69ebcda8c96c68c6bb188419d6e016b", + "f7fcfde0ecf4bfd3e69ebcda8c96c68c6bb188419d810f7c4d004b" +).map(colors); -function x$3(p) { - return p[0]; -} +var BuPu = ramp$1(scheme$g); -function y$3(p) { - return p[1]; -} +var scheme$f = new Array(3).concat( + "e0f3dba8ddb543a2ca", + "f0f9e8bae4bc7bccc42b8cbe", + "f0f9e8bae4bc7bccc443a2ca0868ac", + "f0f9e8ccebc5a8ddb57bccc443a2ca0868ac", + "f0f9e8ccebc5a8ddb57bccc44eb3d32b8cbe08589e", + "f7fcf0e0f3dbccebc5a8ddb57bccc44eb3d32b8cbe08589e", + "f7fcf0e0f3dbccebc5a8ddb57bccc44eb3d32b8cbe0868ac084081" +).map(colors); -function line() { - var x = x$3, - y = y$3, - defined = constant$b(true), - context = null, - curve = curveLinear, - output = null; +var GnBu = ramp$1(scheme$f); - function line(data) { - var i, - n = data.length, - d, - defined0 = false, - buffer; +var scheme$e = new Array(3).concat( + "fee8c8fdbb84e34a33", + "fef0d9fdcc8afc8d59d7301f", + "fef0d9fdcc8afc8d59e34a33b30000", + "fef0d9fdd49efdbb84fc8d59e34a33b30000", + "fef0d9fdd49efdbb84fc8d59ef6548d7301f990000", + "fff7ecfee8c8fdd49efdbb84fc8d59ef6548d7301f990000", + "fff7ecfee8c8fdd49efdbb84fc8d59ef6548d7301fb300007f0000" +).map(colors); - if (context == null) output = curve(buffer = path()); +var OrRd = ramp$1(scheme$e); - for (i = 0; i <= n; ++i) { - if (!(i < n && defined(d = data[i], i, data)) === defined0) { - if (defined0 = !defined0) output.lineStart(); - else output.lineEnd(); - } - if (defined0) output.point(+x(d, i, data), +y(d, i, data)); - } +var scheme$d = new Array(3).concat( + "ece2f0a6bddb1c9099", + "f6eff7bdc9e167a9cf02818a", + "f6eff7bdc9e167a9cf1c9099016c59", + "f6eff7d0d1e6a6bddb67a9cf1c9099016c59", + "f6eff7d0d1e6a6bddb67a9cf3690c002818a016450", + "fff7fbece2f0d0d1e6a6bddb67a9cf3690c002818a016450", + "fff7fbece2f0d0d1e6a6bddb67a9cf3690c002818a016c59014636" +).map(colors); - if (buffer) return output = null, buffer + "" || null; - } +var PuBuGn = ramp$1(scheme$d); - line.x = function(_) { - return arguments.length ? (x = typeof _ === "function" ? _ : constant$b(+_), line) : x; - }; +var scheme$c = new Array(3).concat( + "ece7f2a6bddb2b8cbe", + "f1eef6bdc9e174a9cf0570b0", + "f1eef6bdc9e174a9cf2b8cbe045a8d", + "f1eef6d0d1e6a6bddb74a9cf2b8cbe045a8d", + "f1eef6d0d1e6a6bddb74a9cf3690c00570b0034e7b", + "fff7fbece7f2d0d1e6a6bddb74a9cf3690c00570b0034e7b", + "fff7fbece7f2d0d1e6a6bddb74a9cf3690c00570b0045a8d023858" +).map(colors); - line.y = function(_) { - return arguments.length ? (y = typeof _ === "function" ? _ : constant$b(+_), line) : y; - }; +var PuBu = ramp$1(scheme$c); - line.defined = function(_) { - return arguments.length ? (defined = typeof _ === "function" ? _ : constant$b(!!_), line) : defined; - }; +var scheme$b = new Array(3).concat( + "e7e1efc994c7dd1c77", + "f1eef6d7b5d8df65b0ce1256", + "f1eef6d7b5d8df65b0dd1c77980043", + "f1eef6d4b9dac994c7df65b0dd1c77980043", + "f1eef6d4b9dac994c7df65b0e7298ace125691003f", + "f7f4f9e7e1efd4b9dac994c7df65b0e7298ace125691003f", + "f7f4f9e7e1efd4b9dac994c7df65b0e7298ace125698004367001f" +).map(colors); - line.curve = function(_) { - return arguments.length ? (curve = _, context != null && (output = curve(context)), line) : curve; - }; +var PuRd = ramp$1(scheme$b); - line.context = function(_) { - return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), line) : context; - }; +var scheme$a = new Array(3).concat( + "fde0ddfa9fb5c51b8a", + "feebe2fbb4b9f768a1ae017e", + "feebe2fbb4b9f768a1c51b8a7a0177", + "feebe2fcc5c0fa9fb5f768a1c51b8a7a0177", + "feebe2fcc5c0fa9fb5f768a1dd3497ae017e7a0177", + "fff7f3fde0ddfcc5c0fa9fb5f768a1dd3497ae017e7a0177", + "fff7f3fde0ddfcc5c0fa9fb5f768a1dd3497ae017e7a017749006a" +).map(colors); - return line; -} +var RdPu = ramp$1(scheme$a); -function area$3() { - var x0 = x$3, - x1 = null, - y0 = constant$b(0), - y1 = y$3, - defined = constant$b(true), - context = null, - curve = curveLinear, - output = null; +var scheme$9 = new Array(3).concat( + "edf8b17fcdbb2c7fb8", + "ffffcca1dab441b6c4225ea8", + "ffffcca1dab441b6c42c7fb8253494", + "ffffccc7e9b47fcdbb41b6c42c7fb8253494", + "ffffccc7e9b47fcdbb41b6c41d91c0225ea80c2c84", + "ffffd9edf8b1c7e9b47fcdbb41b6c41d91c0225ea80c2c84", + "ffffd9edf8b1c7e9b47fcdbb41b6c41d91c0225ea8253494081d58" +).map(colors); - function area(data) { - var i, - j, - k, - n = data.length, - d, - defined0 = false, - buffer, - x0z = new Array(n), - y0z = new Array(n); +var YlGnBu = ramp$1(scheme$9); - if (context == null) output = curve(buffer = path()); +var scheme$8 = new Array(3).concat( + "f7fcb9addd8e31a354", + "ffffccc2e69978c679238443", + "ffffccc2e69978c67931a354006837", + "ffffccd9f0a3addd8e78c67931a354006837", + "ffffccd9f0a3addd8e78c67941ab5d238443005a32", + "ffffe5f7fcb9d9f0a3addd8e78c67941ab5d238443005a32", + "ffffe5f7fcb9d9f0a3addd8e78c67941ab5d238443006837004529" +).map(colors); - for (i = 0; i <= n; ++i) { - if (!(i < n && defined(d = data[i], i, data)) === defined0) { - if (defined0 = !defined0) { - j = i; - output.areaStart(); - output.lineStart(); - } else { - output.lineEnd(); - output.lineStart(); - for (k = i - 1; k >= j; --k) { - output.point(x0z[k], y0z[k]); - } - output.lineEnd(); - output.areaEnd(); - } - } - if (defined0) { - x0z[i] = +x0(d, i, data), y0z[i] = +y0(d, i, data); - output.point(x1 ? +x1(d, i, data) : x0z[i], y1 ? +y1(d, i, data) : y0z[i]); - } - } +var YlGn = ramp$1(scheme$8); - if (buffer) return output = null, buffer + "" || null; - } +var scheme$7 = new Array(3).concat( + "fff7bcfec44fd95f0e", + "ffffd4fed98efe9929cc4c02", + "ffffd4fed98efe9929d95f0e993404", + "ffffd4fee391fec44ffe9929d95f0e993404", + "ffffd4fee391fec44ffe9929ec7014cc4c028c2d04", + "ffffe5fff7bcfee391fec44ffe9929ec7014cc4c028c2d04", + "ffffe5fff7bcfee391fec44ffe9929ec7014cc4c02993404662506" +).map(colors); - function arealine() { - return line().defined(defined).curve(curve).context(context); - } +var YlOrBr = ramp$1(scheme$7); - area.x = function(_) { - return arguments.length ? (x0 = typeof _ === "function" ? _ : constant$b(+_), x1 = null, area) : x0; - }; +var scheme$6 = new Array(3).concat( + "ffeda0feb24cf03b20", + "ffffb2fecc5cfd8d3ce31a1c", + "ffffb2fecc5cfd8d3cf03b20bd0026", + "ffffb2fed976feb24cfd8d3cf03b20bd0026", + "ffffb2fed976feb24cfd8d3cfc4e2ae31a1cb10026", + "ffffccffeda0fed976feb24cfd8d3cfc4e2ae31a1cb10026", + "ffffccffeda0fed976feb24cfd8d3cfc4e2ae31a1cbd0026800026" +).map(colors); - area.x0 = function(_) { - return arguments.length ? (x0 = typeof _ === "function" ? _ : constant$b(+_), area) : x0; - }; +var YlOrRd = ramp$1(scheme$6); - area.x1 = function(_) { - return arguments.length ? (x1 = _ == null ? null : typeof _ === "function" ? _ : constant$b(+_), area) : x1; - }; +var scheme$5 = new Array(3).concat( + "deebf79ecae13182bd", + "eff3ffbdd7e76baed62171b5", + "eff3ffbdd7e76baed63182bd08519c", + "eff3ffc6dbef9ecae16baed63182bd08519c", + "eff3ffc6dbef9ecae16baed64292c62171b5084594", + "f7fbffdeebf7c6dbef9ecae16baed64292c62171b5084594", + "f7fbffdeebf7c6dbef9ecae16baed64292c62171b508519c08306b" +).map(colors); - area.y = function(_) { - return arguments.length ? (y0 = typeof _ === "function" ? _ : constant$b(+_), y1 = null, area) : y0; - }; +var Blues = ramp$1(scheme$5); - area.y0 = function(_) { - return arguments.length ? (y0 = typeof _ === "function" ? _ : constant$b(+_), area) : y0; - }; +var scheme$4 = new Array(3).concat( + "e5f5e0a1d99b31a354", + "edf8e9bae4b374c476238b45", + "edf8e9bae4b374c47631a354006d2c", + "edf8e9c7e9c0a1d99b74c47631a354006d2c", + "edf8e9c7e9c0a1d99b74c47641ab5d238b45005a32", + "f7fcf5e5f5e0c7e9c0a1d99b74c47641ab5d238b45005a32", + "f7fcf5e5f5e0c7e9c0a1d99b74c47641ab5d238b45006d2c00441b" +).map(colors); - area.y1 = function(_) { - return arguments.length ? (y1 = _ == null ? null : typeof _ === "function" ? _ : constant$b(+_), area) : y1; - }; +var Greens = ramp$1(scheme$4); - area.lineX0 = - area.lineY0 = function() { - return arealine().x(x0).y(y0); - }; +var scheme$3 = new Array(3).concat( + "f0f0f0bdbdbd636363", + "f7f7f7cccccc969696525252", + "f7f7f7cccccc969696636363252525", + "f7f7f7d9d9d9bdbdbd969696636363252525", + "f7f7f7d9d9d9bdbdbd969696737373525252252525", + "fffffff0f0f0d9d9d9bdbdbd969696737373525252252525", + "fffffff0f0f0d9d9d9bdbdbd969696737373525252252525000000" +).map(colors); - area.lineY1 = function() { - return arealine().x(x0).y(y1); - }; +var Greys = ramp$1(scheme$3); - area.lineX1 = function() { - return arealine().x(x1).y(y0); - }; +var scheme$2 = new Array(3).concat( + "efedf5bcbddc756bb1", + "f2f0f7cbc9e29e9ac86a51a3", + "f2f0f7cbc9e29e9ac8756bb154278f", + "f2f0f7dadaebbcbddc9e9ac8756bb154278f", + "f2f0f7dadaebbcbddc9e9ac8807dba6a51a34a1486", + "fcfbfdefedf5dadaebbcbddc9e9ac8807dba6a51a34a1486", + "fcfbfdefedf5dadaebbcbddc9e9ac8807dba6a51a354278f3f007d" +).map(colors); - area.defined = function(_) { - return arguments.length ? (defined = typeof _ === "function" ? _ : constant$b(!!_), area) : defined; - }; +var Purples = ramp$1(scheme$2); - area.curve = function(_) { - return arguments.length ? (curve = _, context != null && (output = curve(context)), area) : curve; - }; +var scheme$1 = new Array(3).concat( + "fee0d2fc9272de2d26", + "fee5d9fcae91fb6a4acb181d", + "fee5d9fcae91fb6a4ade2d26a50f15", + "fee5d9fcbba1fc9272fb6a4ade2d26a50f15", + "fee5d9fcbba1fc9272fb6a4aef3b2ccb181d99000d", + "fff5f0fee0d2fcbba1fc9272fb6a4aef3b2ccb181d99000d", + "fff5f0fee0d2fcbba1fc9272fb6a4aef3b2ccb181da50f1567000d" +).map(colors); - area.context = function(_) { - return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), area) : context; - }; +var Reds = ramp$1(scheme$1); - return area; -} +var scheme = new Array(3).concat( + "fee6cefdae6be6550d", + "feeddefdbe85fd8d3cd94701", + "feeddefdbe85fd8d3ce6550da63603", + "feeddefdd0a2fdae6bfd8d3ce6550da63603", + "feeddefdd0a2fdae6bfd8d3cf16913d948018c2d04", + "fff5ebfee6cefdd0a2fdae6bfd8d3cf16913d948018c2d04", + "fff5ebfee6cefdd0a2fdae6bfd8d3cf16913d94801a636037f2704" +).map(colors); -function descending$1(a, b) { - return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN; -} +var Oranges = ramp$1(scheme); -function identity$8(d) { - return d; +function cividis(t) { + t = Math.max(0, Math.min(1, t)); + return "rgb(" + + Math.max(0, Math.min(255, Math.round(-4.54 - t * (35.34 - t * (2381.73 - t * (6402.7 - t * (7024.72 - t * 2710.57))))))) + ", " + + Math.max(0, Math.min(255, Math.round(32.49 + t * (170.73 + t * (52.82 - t * (131.46 - t * (176.58 - t * 67.37))))))) + ", " + + Math.max(0, Math.min(255, Math.round(81.24 + t * (442.36 - t * (2482.43 - t * (6167.24 - t * (6614.94 - t * 2475.67))))))) + + ")"; } -function pie() { - var value = identity$8, - sortValues = descending$1, - sort = null, - startAngle = constant$b(0), - endAngle = constant$b(tau$4), - padAngle = constant$b(0); - - function pie(data) { - var i, - n = data.length, - j, - k, - sum = 0, - index = new Array(n), - arcs = new Array(n), - a0 = +startAngle.apply(this, arguments), - da = Math.min(tau$4, Math.max(-tau$4, endAngle.apply(this, arguments) - a0)), - a1, - p = Math.min(Math.abs(da) / n, padAngle.apply(this, arguments)), - pa = p * (da < 0 ? -1 : 1), - v; +var cubehelix = cubehelixLong(cubehelix$3(300, 0.5, 0.0), cubehelix$3(-240, 0.5, 1.0)); - for (i = 0; i < n; ++i) { - if ((v = arcs[index[i] = i] = +value(data[i], i, data)) > 0) { - sum += v; - } - } +var warm = cubehelixLong(cubehelix$3(-100, 0.75, 0.35), cubehelix$3(80, 1.50, 0.8)); - // Optionally sort the arcs by previously-computed values or by data. - if (sortValues != null) index.sort(function(i, j) { return sortValues(arcs[i], arcs[j]); }); - else if (sort != null) index.sort(function(i, j) { return sort(data[i], data[j]); }); +var cool = cubehelixLong(cubehelix$3(260, 0.75, 0.35), cubehelix$3(80, 1.50, 0.8)); - // Compute the arcs! They are stored in the original data's order. - for (i = 0, k = sum ? (da - n * pa) / sum : 0; i < n; ++i, a0 = a1) { - j = index[i], v = arcs[j], a1 = a0 + (v > 0 ? v * k : 0) + pa, arcs[j] = { - data: data[j], - index: i, - value: v, - startAngle: a0, - endAngle: a1, - padAngle: p - }; - } +var c$2 = cubehelix$3(); - return arcs; - } +function rainbow(t) { + if (t < 0 || t > 1) t -= Math.floor(t); + var ts = Math.abs(t - 0.5); + c$2.h = 360 * t - 100; + c$2.s = 1.5 - 1.5 * ts; + c$2.l = 0.8 - 0.9 * ts; + return c$2 + ""; +} - pie.value = function(_) { - return arguments.length ? (value = typeof _ === "function" ? _ : constant$b(+_), pie) : value; - }; +var c$1 = rgb(), + pi_1_3 = Math.PI / 3, + pi_2_3 = Math.PI * 2 / 3; - pie.sortValues = function(_) { - return arguments.length ? (sortValues = _, sort = null, pie) : sortValues; - }; +function sinebow(t) { + var x; + t = (0.5 - t) * Math.PI; + c$1.r = 255 * (x = Math.sin(t)) * x; + c$1.g = 255 * (x = Math.sin(t + pi_1_3)) * x; + c$1.b = 255 * (x = Math.sin(t + pi_2_3)) * x; + return c$1 + ""; +} - pie.sort = function(_) { - return arguments.length ? (sort = _, sortValues = null, pie) : sort; - }; +function turbo(t) { + t = Math.max(0, Math.min(1, t)); + return "rgb(" + + Math.max(0, Math.min(255, Math.round(34.61 + t * (1172.33 - t * (10793.56 - t * (33300.12 - t * (38394.49 - t * 14825.05))))))) + ", " + + Math.max(0, Math.min(255, Math.round(23.31 + t * (557.33 + t * (1225.33 - t * (3574.96 - t * (1073.77 + t * 707.56))))))) + ", " + + Math.max(0, Math.min(255, Math.round(27.2 + t * (3211.1 - t * (15327.97 - t * (27814 - t * (22569.18 - t * 6838.66))))))) + + ")"; +} - pie.startAngle = function(_) { - return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$b(+_), pie) : startAngle; +function ramp(range) { + var n = range.length; + return function(t) { + return range[Math.max(0, Math.min(n - 1, Math.floor(t * n)))]; }; +} - pie.endAngle = function(_) { - return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$b(+_), pie) : endAngle; - }; +var viridis = ramp(colors("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")); - pie.padAngle = function(_) { - return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant$b(+_), pie) : padAngle; - }; +var magma = ramp(colors("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")); - return pie; -} +var inferno = ramp(colors("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")); -var curveRadialLinear = curveRadial(curveLinear); +var plasma = ramp(colors("0d088710078813078916078a19068c1b068d1d068e20068f2206902406912605912805922a05932c05942e05952f059631059733059735049837049938049a3a049a3c049b3e049c3f049c41049d43039e44039e46039f48039f4903a04b03a14c02a14e02a25002a25102a35302a35502a45601a45801a45901a55b01a55c01a65e01a66001a66100a76300a76400a76600a76700a86900a86a00a86c00a86e00a86f00a87100a87201a87401a87501a87701a87801a87a02a87b02a87d03a87e03a88004a88104a78305a78405a78606a68707a68808a68a09a58b0aa58d0ba58e0ca48f0da4910ea3920fa39410a29511a19613a19814a099159f9a169f9c179e9d189d9e199da01a9ca11b9ba21d9aa31e9aa51f99a62098a72197a82296aa2395ab2494ac2694ad2793ae2892b02991b12a90b22b8fb32c8eb42e8db52f8cb6308bb7318ab83289ba3388bb3488bc3587bd3786be3885bf3984c03a83c13b82c23c81c33d80c43e7fc5407ec6417dc7427cc8437bc9447aca457acb4679cc4778cc4977cd4a76ce4b75cf4c74d04d73d14e72d24f71d35171d45270d5536fd5546ed6556dd7566cd8576bd9586ada5a6ada5b69db5c68dc5d67dd5e66de5f65de6164df6263e06363e16462e26561e26660e3685fe4695ee56a5de56b5de66c5ce76e5be76f5ae87059e97158e97257ea7457eb7556eb7655ec7754ed7953ed7a52ee7b51ef7c51ef7e50f07f4ff0804ef1814df1834cf2844bf3854bf3874af48849f48948f58b47f58c46f68d45f68f44f79044f79143f79342f89441f89540f9973ff9983ef99a3efa9b3dfa9c3cfa9e3bfb9f3afba139fba238fca338fca537fca636fca835fca934fdab33fdac33fdae32fdaf31fdb130fdb22ffdb42ffdb52efeb72dfeb82cfeba2cfebb2bfebd2afebe2afec029fdc229fdc328fdc527fdc627fdc827fdca26fdcb26fccd25fcce25fcd025fcd225fbd324fbd524fbd724fad824fada24f9dc24f9dd25f8df25f8e125f7e225f7e425f6e626f6e826f5e926f5eb27f4ed27f3ee27f3f027f2f227f1f426f1f525f0f724f0f921")); -function Radial(curve) { - this._curve = curve; +function constant$1(x) { + return function constant() { + return x; + }; } -Radial.prototype = { - areaStart: function() { - this._curve.areaStart(); - }, - areaEnd: function() { - this._curve.areaEnd(); - }, - lineStart: function() { - this._curve.lineStart(); - }, - lineEnd: function() { - this._curve.lineEnd(); - }, - point: function(a, r) { - this._curve.point(r * Math.sin(a), r * -Math.cos(a)); - } -}; +var abs = Math.abs; +var atan2 = Math.atan2; +var cos = Math.cos; +var max = Math.max; +var min = Math.min; +var sin = Math.sin; +var sqrt = Math.sqrt; -function curveRadial(curve) { +var epsilon = 1e-12; +var pi = Math.PI; +var halfPi = pi / 2; +var tau = 2 * pi; - function radial(context) { - return new Radial(curve(context)); - } +function acos(x) { + return x > 1 ? 0 : x < -1 ? pi : Math.acos(x); +} - radial._curve = curve; +function asin(x) { + return x >= 1 ? halfPi : x <= -1 ? -halfPi : Math.asin(x); +} - return radial; +function arcInnerRadius(d) { + return d.innerRadius; } -function lineRadial(l) { - var c = l.curve; +function arcOuterRadius(d) { + return d.outerRadius; +} - l.angle = l.x, delete l.x; - l.radius = l.y, delete l.y; +function arcStartAngle(d) { + return d.startAngle; +} - l.curve = function(_) { - return arguments.length ? c(curveRadial(_)) : c()._curve; - }; +function arcEndAngle(d) { + return d.endAngle; +} - return l; +function arcPadAngle(d) { + return d && d.padAngle; // Note: optional! } -function lineRadial$1() { - return lineRadial(line().curve(curveRadialLinear)); +function intersect(x0, y0, x1, y1, x2, y2, x3, y3) { + var x10 = x1 - x0, y10 = y1 - y0, + x32 = x3 - x2, y32 = y3 - y2, + t = y32 * x10 - x32 * y10; + if (t * t < epsilon) return; + t = (x32 * (y0 - y2) - y32 * (x0 - x2)) / t; + return [x0 + t * x10, y0 + t * y10]; } -function areaRadial() { - var a = area$3().curve(curveRadialLinear), - c = a.curve, - x0 = a.lineX0, - x1 = a.lineX1, - y0 = a.lineY0, - y1 = a.lineY1; +// Compute perpendicular offset line of length rc. +// http://mathworld.wolfram.com/Circle-LineIntersection.html +function cornerTangents(x0, y0, x1, y1, r1, rc, cw) { + var x01 = x0 - x1, + y01 = y0 - y1, + lo = (cw ? rc : -rc) / sqrt(x01 * x01 + y01 * y01), + ox = lo * y01, + oy = -lo * x01, + x11 = x0 + ox, + y11 = y0 + oy, + x10 = x1 + ox, + y10 = y1 + oy, + x00 = (x11 + x10) / 2, + y00 = (y11 + y10) / 2, + dx = x10 - x11, + dy = y10 - y11, + d2 = dx * dx + dy * dy, + r = r1 - rc, + D = x11 * y10 - x10 * y11, + d = (dy < 0 ? -1 : 1) * sqrt(max(0, r * r * d2 - D * D)), + cx0 = (D * dy - dx * d) / d2, + cy0 = (-D * dx - dy * d) / d2, + cx1 = (D * dy + dx * d) / d2, + cy1 = (-D * dx + dy * d) / d2, + dx0 = cx0 - x00, + dy0 = cy0 - y00, + dx1 = cx1 - x00, + dy1 = cy1 - y00; - a.angle = a.x, delete a.x; - a.startAngle = a.x0, delete a.x0; - a.endAngle = a.x1, delete a.x1; - a.radius = a.y, delete a.y; - a.innerRadius = a.y0, delete a.y0; - a.outerRadius = a.y1, delete a.y1; - a.lineStartAngle = function() { return lineRadial(x0()); }, delete a.lineX0; - a.lineEndAngle = function() { return lineRadial(x1()); }, delete a.lineX1; - a.lineInnerRadius = function() { return lineRadial(y0()); }, delete a.lineY0; - a.lineOuterRadius = function() { return lineRadial(y1()); }, delete a.lineY1; + // Pick the closer of the two intersection points. + // TODO Is there a faster way to determine which intersection to use? + if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1; - a.curve = function(_) { - return arguments.length ? c(curveRadial(_)) : c()._curve; + return { + cx: cx0, + cy: cy0, + x01: -ox, + y01: -oy, + x11: cx0 * (r1 / r - 1), + y11: cy0 * (r1 / r - 1) }; - - return a; -} - -function pointRadial(x, y) { - return [(y = +y) * Math.cos(x -= Math.PI / 2), y * Math.sin(x)]; -} - -var slice$6 = Array.prototype.slice; - -function linkSource(d) { - return d.source; -} - -function linkTarget(d) { - return d.target; } -function link$2(curve) { - var source = linkSource, - target = linkTarget, - x = x$3, - y = y$3, +function arc() { + var innerRadius = arcInnerRadius, + outerRadius = arcOuterRadius, + cornerRadius = constant$1(0), + padRadius = null, + startAngle = arcStartAngle, + endAngle = arcEndAngle, + padAngle = arcPadAngle, context = null; - function link() { - var buffer, argv = slice$6.call(arguments), s = source.apply(this, argv), t = target.apply(this, argv); + function arc() { + var buffer, + r, + r0 = +innerRadius.apply(this, arguments), + r1 = +outerRadius.apply(this, arguments), + a0 = startAngle.apply(this, arguments) - halfPi, + a1 = endAngle.apply(this, arguments) - halfPi, + da = abs(a1 - a0), + cw = a1 > a0; + if (!context) context = buffer = path(); - curve(context, +x.apply(this, (argv[0] = s, argv)), +y.apply(this, argv), +x.apply(this, (argv[0] = t, argv)), +y.apply(this, argv)); - if (buffer) return context = null, buffer + "" || null; - } - link.source = function(_) { - return arguments.length ? (source = _, link) : source; - }; + // Ensure that the outer radius is always larger than the inner radius. + if (r1 < r0) r = r1, r1 = r0, r0 = r; - link.target = function(_) { - return arguments.length ? (target = _, link) : target; - }; + // Is it a point? + if (!(r1 > epsilon)) context.moveTo(0, 0); - link.x = function(_) { - return arguments.length ? (x = typeof _ === "function" ? _ : constant$b(+_), link) : x; - }; + // Or is it a circle or annulus? + else if (da > tau - epsilon) { + context.moveTo(r1 * cos(a0), r1 * sin(a0)); + context.arc(0, 0, r1, a0, a1, !cw); + if (r0 > epsilon) { + context.moveTo(r0 * cos(a1), r0 * sin(a1)); + context.arc(0, 0, r0, a1, a0, cw); + } + } - link.y = function(_) { - return arguments.length ? (y = typeof _ === "function" ? _ : constant$b(+_), link) : y; - }; + // Or is it a circular or annular sector? + else { + var a01 = a0, + a11 = a1, + a00 = a0, + a10 = a1, + da0 = da, + da1 = da, + ap = padAngle.apply(this, arguments) / 2, + rp = (ap > epsilon) && (padRadius ? +padRadius.apply(this, arguments) : sqrt(r0 * r0 + r1 * r1)), + rc = min(abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments)), + rc0 = rc, + rc1 = rc, + t0, + t1; - link.context = function(_) { - return arguments.length ? ((context = _ == null ? null : _), link) : context; - }; + // Apply padding? Note that since r1 ≥ r0, da1 ≥ da0. + if (rp > epsilon) { + var p0 = asin(rp / r0 * sin(ap)), + p1 = asin(rp / r1 * sin(ap)); + if ((da0 -= p0 * 2) > epsilon) p0 *= (cw ? 1 : -1), a00 += p0, a10 -= p0; + else da0 = 0, a00 = a10 = (a0 + a1) / 2; + if ((da1 -= p1 * 2) > epsilon) p1 *= (cw ? 1 : -1), a01 += p1, a11 -= p1; + else da1 = 0, a01 = a11 = (a0 + a1) / 2; + } - return link; -} + var x01 = r1 * cos(a01), + y01 = r1 * sin(a01), + x10 = r0 * cos(a10), + y10 = r0 * sin(a10); -function curveHorizontal(context, x0, y0, x1, y1) { - context.moveTo(x0, y0); - context.bezierCurveTo(x0 = (x0 + x1) / 2, y0, x0, y1, x1, y1); -} + // Apply rounded corners? + if (rc > epsilon) { + var x11 = r1 * cos(a11), + y11 = r1 * sin(a11), + x00 = r0 * cos(a00), + y00 = r0 * sin(a00), + oc; -function curveVertical(context, x0, y0, x1, y1) { - context.moveTo(x0, y0); - context.bezierCurveTo(x0, y0 = (y0 + y1) / 2, x1, y0, x1, y1); -} + // Restrict the corner radius according to the sector angle. + if (da < pi && (oc = intersect(x01, y01, x00, y00, x11, y11, x10, y10))) { + var ax = x01 - oc[0], + ay = y01 - oc[1], + bx = x11 - oc[0], + by = y11 - oc[1], + kc = 1 / sin(acos((ax * bx + ay * by) / (sqrt(ax * ax + ay * ay) * sqrt(bx * bx + by * by))) / 2), + lc = sqrt(oc[0] * oc[0] + oc[1] * oc[1]); + rc0 = min(rc, (r0 - lc) / (kc - 1)); + rc1 = min(rc, (r1 - lc) / (kc + 1)); + } + } -function curveRadial$1(context, x0, y0, x1, y1) { - var p0 = pointRadial(x0, y0), - p1 = pointRadial(x0, y0 = (y0 + y1) / 2), - p2 = pointRadial(x1, y0), - p3 = pointRadial(x1, y1); - context.moveTo(p0[0], p0[1]); - context.bezierCurveTo(p1[0], p1[1], p2[0], p2[1], p3[0], p3[1]); -} + // Is the sector collapsed to a line? + if (!(da1 > epsilon)) context.moveTo(x01, y01); -function linkHorizontal() { - return link$2(curveHorizontal); -} + // Does the sector’s outer ring have rounded corners? + else if (rc1 > epsilon) { + t0 = cornerTangents(x00, y00, x01, y01, r1, rc1, cw); + t1 = cornerTangents(x11, y11, x10, y10, r1, rc1, cw); -function linkVertical() { - return link$2(curveVertical); -} + context.moveTo(t0.cx + t0.x01, t0.cy + t0.y01); -function linkRadial() { - var l = link$2(curveRadial$1); - l.angle = l.x, delete l.x; - l.radius = l.y, delete l.y; - return l; -} + // Have the corners merged? + if (rc1 < rc) context.arc(t0.cx, t0.cy, rc1, atan2(t0.y01, t0.x01), atan2(t1.y01, t1.x01), !cw); -var circle$2 = { - draw: function(context, size) { - var r = Math.sqrt(size / pi$4); - context.moveTo(r, 0); - context.arc(0, 0, r, 0, tau$4); - } -}; + // Otherwise, draw the two corners and the ring. + else { + context.arc(t0.cx, t0.cy, rc1, atan2(t0.y01, t0.x01), atan2(t0.y11, t0.x11), !cw); + context.arc(0, 0, r1, atan2(t0.cy + t0.y11, t0.cx + t0.x11), atan2(t1.cy + t1.y11, t1.cx + t1.x11), !cw); + context.arc(t1.cx, t1.cy, rc1, atan2(t1.y11, t1.x11), atan2(t1.y01, t1.x01), !cw); + } + } -var cross$2 = { - draw: function(context, size) { - var r = Math.sqrt(size / 5) / 2; - context.moveTo(-3 * r, -r); - context.lineTo(-r, -r); - context.lineTo(-r, -3 * r); - context.lineTo(r, -3 * r); - context.lineTo(r, -r); - context.lineTo(3 * r, -r); - context.lineTo(3 * r, r); - context.lineTo(r, r); - context.lineTo(r, 3 * r); - context.lineTo(-r, 3 * r); - context.lineTo(-r, r); - context.lineTo(-3 * r, r); - context.closePath(); - } -}; + // Or is the outer ring just a circular arc? + else context.moveTo(x01, y01), context.arc(0, 0, r1, a01, a11, !cw); -var tan30 = Math.sqrt(1 / 3), - tan30_2 = tan30 * 2; + // Is there no inner ring, and it’s a circular sector? + // Or perhaps it’s an annular sector collapsed due to padding? + if (!(r0 > epsilon) || !(da0 > epsilon)) context.lineTo(x10, y10); -var diamond = { - draw: function(context, size) { - var y = Math.sqrt(size / tan30_2), - x = y * tan30; - context.moveTo(0, -y); - context.lineTo(x, 0); - context.lineTo(0, y); - context.lineTo(-x, 0); - context.closePath(); - } -}; + // Does the sector’s inner ring (or point) have rounded corners? + else if (rc0 > epsilon) { + t0 = cornerTangents(x10, y10, x11, y11, r0, -rc0, cw); + t1 = cornerTangents(x01, y01, x00, y00, r0, -rc0, cw); -var ka = 0.89081309152928522810, - kr = Math.sin(pi$4 / 10) / Math.sin(7 * pi$4 / 10), - kx = Math.sin(tau$4 / 10) * kr, - ky = -Math.cos(tau$4 / 10) * kr; + context.lineTo(t0.cx + t0.x01, t0.cy + t0.y01); -var star = { - draw: function(context, size) { - var r = Math.sqrt(size * ka), - x = kx * r, - y = ky * r; - context.moveTo(0, -r); - context.lineTo(x, y); - for (var i = 1; i < 5; ++i) { - var a = tau$4 * i / 5, - c = Math.cos(a), - s = Math.sin(a); - context.lineTo(s * r, -c * r); - context.lineTo(c * x - s * y, s * x + c * y); - } - context.closePath(); - } -}; + // Have the corners merged? + if (rc0 < rc) context.arc(t0.cx, t0.cy, rc0, atan2(t0.y01, t0.x01), atan2(t1.y01, t1.x01), !cw); -var square = { - draw: function(context, size) { - var w = Math.sqrt(size), - x = -w / 2; - context.rect(x, x, w, w); - } -}; + // Otherwise, draw the two corners and the ring. + else { + context.arc(t0.cx, t0.cy, rc0, atan2(t0.y01, t0.x01), atan2(t0.y11, t0.x11), !cw); + context.arc(0, 0, r0, atan2(t0.cy + t0.y11, t0.cx + t0.x11), atan2(t1.cy + t1.y11, t1.cx + t1.x11), cw); + context.arc(t1.cx, t1.cy, rc0, atan2(t1.y11, t1.x11), atan2(t1.y01, t1.x01), !cw); + } + } -var sqrt3 = Math.sqrt(3); + // Or is the inner ring just a circular arc? + else context.arc(0, 0, r0, a10, a00, cw); + } -var triangle = { - draw: function(context, size) { - var y = -Math.sqrt(size / (sqrt3 * 3)); - context.moveTo(0, y * 2); - context.lineTo(-sqrt3 * y, -y); - context.lineTo(sqrt3 * y, -y); context.closePath(); - } -}; - -var c$2 = -0.5, - s = Math.sqrt(3) / 2, - k = 1 / Math.sqrt(12), - a = (k / 2 + 1) * 3; -var wye = { - draw: function(context, size) { - var r = Math.sqrt(size / a), - x0 = r / 2, - y0 = r * k, - x1 = x0, - y1 = r * k + r, - x2 = -x1, - y2 = y1; - context.moveTo(x0, y0); - context.lineTo(x1, y1); - context.lineTo(x2, y2); - context.lineTo(c$2 * x0 - s * y0, s * x0 + c$2 * y0); - context.lineTo(c$2 * x1 - s * y1, s * x1 + c$2 * y1); - context.lineTo(c$2 * x2 - s * y2, s * x2 + c$2 * y2); - context.lineTo(c$2 * x0 + s * y0, c$2 * y0 - s * x0); - context.lineTo(c$2 * x1 + s * y1, c$2 * y1 - s * x1); - context.lineTo(c$2 * x2 + s * y2, c$2 * y2 - s * x2); - context.closePath(); + if (buffer) return context = null, buffer + "" || null; } -}; -var symbols = [ - circle$2, - cross$2, - diamond, - square, - star, - triangle, - wye -]; + arc.centroid = function() { + var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, + a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - pi / 2; + return [cos(a) * r, sin(a) * r]; + }; + + arc.innerRadius = function(_) { + return arguments.length ? (innerRadius = typeof _ === "function" ? _ : constant$1(+_), arc) : innerRadius; + }; -function symbol() { - var type = constant$b(circle$2), - size = constant$b(64), - context = null; + arc.outerRadius = function(_) { + return arguments.length ? (outerRadius = typeof _ === "function" ? _ : constant$1(+_), arc) : outerRadius; + }; - function symbol() { - var buffer; - if (!context) context = buffer = path(); - type.apply(this, arguments).draw(context, +size.apply(this, arguments)); - if (buffer) return context = null, buffer + "" || null; - } + arc.cornerRadius = function(_) { + return arguments.length ? (cornerRadius = typeof _ === "function" ? _ : constant$1(+_), arc) : cornerRadius; + }; - symbol.type = function(_) { - return arguments.length ? (type = typeof _ === "function" ? _ : constant$b(_), symbol) : type; + arc.padRadius = function(_) { + return arguments.length ? (padRadius = _ == null ? null : typeof _ === "function" ? _ : constant$1(+_), arc) : padRadius; }; - symbol.size = function(_) { - return arguments.length ? (size = typeof _ === "function" ? _ : constant$b(+_), symbol) : size; + arc.startAngle = function(_) { + return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$1(+_), arc) : startAngle; }; - symbol.context = function(_) { - return arguments.length ? (context = _ == null ? null : _, symbol) : context; + arc.endAngle = function(_) { + return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$1(+_), arc) : endAngle; }; - return symbol; + arc.padAngle = function(_) { + return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant$1(+_), arc) : padAngle; + }; + + arc.context = function(_) { + return arguments.length ? ((context = _ == null ? null : _), arc) : context; + }; + + return arc; } -function noop$3() {} +var slice = Array.prototype.slice; -function point$2(that, x, y) { - that._context.bezierCurveTo( - (2 * that._x0 + that._x1) / 3, - (2 * that._y0 + that._y1) / 3, - (that._x0 + 2 * that._x1) / 3, - (that._y0 + 2 * that._y1) / 3, - (that._x0 + 4 * that._x1 + x) / 6, - (that._y0 + 4 * that._y1 + y) / 6 - ); +function array(x) { + return typeof x === "object" && "length" in x + ? x // Array, TypedArray, NodeList, array-like + : Array.from(x); // Map, Set, iterable, string, or anything else } -function Basis(context) { +function Linear(context) { this._context = context; } -Basis.prototype = { +Linear.prototype = { areaStart: function() { this._line = 0; }, @@ -15612,15 +17019,9 @@ Basis.prototype = { this._line = NaN; }, lineStart: function() { - this._x0 = this._x1 = - this._y0 = this._y1 = NaN; this._point = 0; }, lineEnd: function() { - switch (this._point) { - case 3: point$2(this, this._x1, this._y1); // proceed - case 2: this._context.lineTo(this._x1, this._y1); break; - } if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); this._line = 1 - this._line; }, @@ -15628,360 +17029,592 @@ Basis.prototype = { x = +x, y = +y; switch (this._point) { case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; - case 1: this._point = 2; break; - case 2: this._point = 3; this._context.lineTo((5 * this._x0 + this._x1) / 6, (5 * this._y0 + this._y1) / 6); // proceed - default: point$2(this, x, y); break; + case 1: this._point = 2; // proceed + default: this._context.lineTo(x, y); break; } - this._x0 = this._x1, this._x1 = x; - this._y0 = this._y1, this._y1 = y; } }; -function basis$2(context) { - return new Basis(context); +function curveLinear(context) { + return new Linear(context); } -function BasisClosed(context) { - this._context = context; +function x(p) { + return p[0]; } -BasisClosed.prototype = { - areaStart: noop$3, - areaEnd: noop$3, - lineStart: function() { - this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = - this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = NaN; - this._point = 0; - }, - lineEnd: function() { - switch (this._point) { - case 1: { - this._context.moveTo(this._x2, this._y2); - this._context.closePath(); - break; +function y(p) { + return p[1]; +} + +function line(x$1, y$1) { + var defined = constant$1(true), + context = null, + curve = curveLinear, + output = null; + + x$1 = typeof x$1 === "function" ? x$1 : (x$1 === undefined) ? x : constant$1(x$1); + y$1 = typeof y$1 === "function" ? y$1 : (y$1 === undefined) ? y : constant$1(y$1); + + function line(data) { + var i, + n = (data = array(data)).length, + d, + defined0 = false, + buffer; + + if (context == null) output = curve(buffer = path()); + + for (i = 0; i <= n; ++i) { + if (!(i < n && defined(d = data[i], i, data)) === defined0) { + if (defined0 = !defined0) output.lineStart(); + else output.lineEnd(); } - case 2: { - this._context.moveTo((this._x2 + 2 * this._x3) / 3, (this._y2 + 2 * this._y3) / 3); - this._context.lineTo((this._x3 + 2 * this._x2) / 3, (this._y3 + 2 * this._y2) / 3); - this._context.closePath(); - break; + if (defined0) output.point(+x$1(d, i, data), +y$1(d, i, data)); + } + + if (buffer) return output = null, buffer + "" || null; + } + + line.x = function(_) { + return arguments.length ? (x$1 = typeof _ === "function" ? _ : constant$1(+_), line) : x$1; + }; + + line.y = function(_) { + return arguments.length ? (y$1 = typeof _ === "function" ? _ : constant$1(+_), line) : y$1; + }; + + line.defined = function(_) { + return arguments.length ? (defined = typeof _ === "function" ? _ : constant$1(!!_), line) : defined; + }; + + line.curve = function(_) { + return arguments.length ? (curve = _, context != null && (output = curve(context)), line) : curve; + }; + + line.context = function(_) { + return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), line) : context; + }; + + return line; +} + +function area(x0, y0, y1) { + var x1 = null, + defined = constant$1(true), + context = null, + curve = curveLinear, + output = null; + + x0 = typeof x0 === "function" ? x0 : (x0 === undefined) ? x : constant$1(+x0); + y0 = typeof y0 === "function" ? y0 : (y0 === undefined) ? constant$1(0) : constant$1(+y0); + y1 = typeof y1 === "function" ? y1 : (y1 === undefined) ? y : constant$1(+y1); + + function area(data) { + var i, + j, + k, + n = (data = array(data)).length, + d, + defined0 = false, + buffer, + x0z = new Array(n), + y0z = new Array(n); + + if (context == null) output = curve(buffer = path()); + + for (i = 0; i <= n; ++i) { + if (!(i < n && defined(d = data[i], i, data)) === defined0) { + if (defined0 = !defined0) { + j = i; + output.areaStart(); + output.lineStart(); + } else { + output.lineEnd(); + output.lineStart(); + for (k = i - 1; k >= j; --k) { + output.point(x0z[k], y0z[k]); + } + output.lineEnd(); + output.areaEnd(); + } } - case 3: { - this.point(this._x2, this._y2); - this.point(this._x3, this._y3); - this.point(this._x4, this._y4); - break; + if (defined0) { + x0z[i] = +x0(d, i, data), y0z[i] = +y0(d, i, data); + output.point(x1 ? +x1(d, i, data) : x0z[i], y1 ? +y1(d, i, data) : y0z[i]); } } - }, - point: function(x, y) { - x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; this._x2 = x, this._y2 = y; break; - case 1: this._point = 2; this._x3 = x, this._y3 = y; break; - case 2: this._point = 3; this._x4 = x, this._y4 = y; this._context.moveTo((this._x0 + 4 * this._x1 + x) / 6, (this._y0 + 4 * this._y1 + y) / 6); break; - default: point$2(this, x, y); break; + + if (buffer) return output = null, buffer + "" || null; + } + + function arealine() { + return line().defined(defined).curve(curve).context(context); + } + + area.x = function(_) { + return arguments.length ? (x0 = typeof _ === "function" ? _ : constant$1(+_), x1 = null, area) : x0; + }; + + area.x0 = function(_) { + return arguments.length ? (x0 = typeof _ === "function" ? _ : constant$1(+_), area) : x0; + }; + + area.x1 = function(_) { + return arguments.length ? (x1 = _ == null ? null : typeof _ === "function" ? _ : constant$1(+_), area) : x1; + }; + + area.y = function(_) { + return arguments.length ? (y0 = typeof _ === "function" ? _ : constant$1(+_), y1 = null, area) : y0; + }; + + area.y0 = function(_) { + return arguments.length ? (y0 = typeof _ === "function" ? _ : constant$1(+_), area) : y0; + }; + + area.y1 = function(_) { + return arguments.length ? (y1 = _ == null ? null : typeof _ === "function" ? _ : constant$1(+_), area) : y1; + }; + + area.lineX0 = + area.lineY0 = function() { + return arealine().x(x0).y(y0); + }; + + area.lineY1 = function() { + return arealine().x(x0).y(y1); + }; + + area.lineX1 = function() { + return arealine().x(x1).y(y0); + }; + + area.defined = function(_) { + return arguments.length ? (defined = typeof _ === "function" ? _ : constant$1(!!_), area) : defined; + }; + + area.curve = function(_) { + return arguments.length ? (curve = _, context != null && (output = curve(context)), area) : curve; + }; + + area.context = function(_) { + return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), area) : context; + }; + + return area; +} + +function descending$1(a, b) { + return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN; +} + +function identity$1(d) { + return d; +} + +function pie() { + var value = identity$1, + sortValues = descending$1, + sort = null, + startAngle = constant$1(0), + endAngle = constant$1(tau), + padAngle = constant$1(0); + + function pie(data) { + var i, + n = (data = array(data)).length, + j, + k, + sum = 0, + index = new Array(n), + arcs = new Array(n), + a0 = +startAngle.apply(this, arguments), + da = Math.min(tau, Math.max(-tau, endAngle.apply(this, arguments) - a0)), + a1, + p = Math.min(Math.abs(da) / n, padAngle.apply(this, arguments)), + pa = p * (da < 0 ? -1 : 1), + v; + + for (i = 0; i < n; ++i) { + if ((v = arcs[index[i] = i] = +value(data[i], i, data)) > 0) { + sum += v; + } + } + + // Optionally sort the arcs by previously-computed values or by data. + if (sortValues != null) index.sort(function(i, j) { return sortValues(arcs[i], arcs[j]); }); + else if (sort != null) index.sort(function(i, j) { return sort(data[i], data[j]); }); + + // Compute the arcs! They are stored in the original data's order. + for (i = 0, k = sum ? (da - n * pa) / sum : 0; i < n; ++i, a0 = a1) { + j = index[i], v = arcs[j], a1 = a0 + (v > 0 ? v * k : 0) + pa, arcs[j] = { + data: data[j], + index: i, + value: v, + startAngle: a0, + endAngle: a1, + padAngle: p + }; } - this._x0 = this._x1, this._x1 = x; - this._y0 = this._y1, this._y1 = y; + + return arcs; } -}; -function basisClosed$1(context) { - return new BasisClosed(context); + pie.value = function(_) { + return arguments.length ? (value = typeof _ === "function" ? _ : constant$1(+_), pie) : value; + }; + + pie.sortValues = function(_) { + return arguments.length ? (sortValues = _, sort = null, pie) : sortValues; + }; + + pie.sort = function(_) { + return arguments.length ? (sort = _, sortValues = null, pie) : sort; + }; + + pie.startAngle = function(_) { + return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$1(+_), pie) : startAngle; + }; + + pie.endAngle = function(_) { + return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$1(+_), pie) : endAngle; + }; + + pie.padAngle = function(_) { + return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant$1(+_), pie) : padAngle; + }; + + return pie; } -function BasisOpen(context) { - this._context = context; +var curveRadialLinear = curveRadial$1(curveLinear); + +function Radial(curve) { + this._curve = curve; } -BasisOpen.prototype = { +Radial.prototype = { areaStart: function() { - this._line = 0; + this._curve.areaStart(); }, areaEnd: function() { - this._line = NaN; + this._curve.areaEnd(); }, lineStart: function() { - this._x0 = this._x1 = - this._y0 = this._y1 = NaN; - this._point = 0; + this._curve.lineStart(); }, lineEnd: function() { - if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath(); - this._line = 1 - this._line; + this._curve.lineEnd(); }, - point: function(x, y) { - x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; break; - case 1: this._point = 2; break; - case 2: this._point = 3; var x0 = (this._x0 + 4 * this._x1 + x) / 6, y0 = (this._y0 + 4 * this._y1 + y) / 6; this._line ? this._context.lineTo(x0, y0) : this._context.moveTo(x0, y0); break; - case 3: this._point = 4; // proceed - default: point$2(this, x, y); break; - } - this._x0 = this._x1, this._x1 = x; - this._y0 = this._y1, this._y1 = y; + point: function(a, r) { + this._curve.point(r * Math.sin(a), r * -Math.cos(a)); } }; -function basisOpen(context) { - return new BasisOpen(context); +function curveRadial$1(curve) { + + function radial(context) { + return new Radial(curve(context)); + } + + radial._curve = curve; + + return radial; } -function Bundle(context, beta) { - this._basis = new Basis(context); - this._beta = beta; +function lineRadial(l) { + var c = l.curve; + + l.angle = l.x, delete l.x; + l.radius = l.y, delete l.y; + + l.curve = function(_) { + return arguments.length ? c(curveRadial$1(_)) : c()._curve; + }; + + return l; } -Bundle.prototype = { - lineStart: function() { - this._x = []; - this._y = []; - this._basis.lineStart(); - }, - lineEnd: function() { - var x = this._x, - y = this._y, - j = x.length - 1; +function lineRadial$1() { + return lineRadial(line().curve(curveRadialLinear)); +} - if (j > 0) { - var x0 = x[0], - y0 = y[0], - dx = x[j] - x0, - dy = y[j] - y0, - i = -1, - t; +function areaRadial() { + var a = area().curve(curveRadialLinear), + c = a.curve, + x0 = a.lineX0, + x1 = a.lineX1, + y0 = a.lineY0, + y1 = a.lineY1; - while (++i <= j) { - t = i / j; - this._basis.point( - this._beta * x[i] + (1 - this._beta) * (x0 + t * dx), - this._beta * y[i] + (1 - this._beta) * (y0 + t * dy) - ); - } - } + a.angle = a.x, delete a.x; + a.startAngle = a.x0, delete a.x0; + a.endAngle = a.x1, delete a.x1; + a.radius = a.y, delete a.y; + a.innerRadius = a.y0, delete a.y0; + a.outerRadius = a.y1, delete a.y1; + a.lineStartAngle = function() { return lineRadial(x0()); }, delete a.lineX0; + a.lineEndAngle = function() { return lineRadial(x1()); }, delete a.lineX1; + a.lineInnerRadius = function() { return lineRadial(y0()); }, delete a.lineY0; + a.lineOuterRadius = function() { return lineRadial(y1()); }, delete a.lineY1; - this._x = this._y = null; - this._basis.lineEnd(); - }, - point: function(x, y) { - this._x.push(+x); - this._y.push(+y); - } -}; + a.curve = function(_) { + return arguments.length ? c(curveRadial$1(_)) : c()._curve; + }; -var bundle = (function custom(beta) { + return a; +} - function bundle(context) { - return beta === 1 ? new Basis(context) : new Bundle(context, beta); +function pointRadial(x, y) { + return [(y = +y) * Math.cos(x -= Math.PI / 2), y * Math.sin(x)]; +} + +function linkSource(d) { + return d.source; +} + +function linkTarget(d) { + return d.target; +} + +function link(curve) { + var source = linkSource, + target = linkTarget, + x$1 = x, + y$1 = y, + context = null; + + function link() { + var buffer, argv = slice.call(arguments), s = source.apply(this, argv), t = target.apply(this, argv); + if (!context) context = buffer = path(); + curve(context, +x$1.apply(this, (argv[0] = s, argv)), +y$1.apply(this, argv), +x$1.apply(this, (argv[0] = t, argv)), +y$1.apply(this, argv)); + if (buffer) return context = null, buffer + "" || null; } - bundle.beta = function(beta) { - return custom(+beta); + link.source = function(_) { + return arguments.length ? (source = _, link) : source; }; - return bundle; -})(0.85); + link.target = function(_) { + return arguments.length ? (target = _, link) : target; + }; -function point$3(that, x, y) { - that._context.bezierCurveTo( - that._x1 + that._k * (that._x2 - that._x0), - that._y1 + that._k * (that._y2 - that._y0), - that._x2 + that._k * (that._x1 - x), - that._y2 + that._k * (that._y1 - y), - that._x2, - that._y2 - ); + link.x = function(_) { + return arguments.length ? (x$1 = typeof _ === "function" ? _ : constant$1(+_), link) : x$1; + }; + + link.y = function(_) { + return arguments.length ? (y$1 = typeof _ === "function" ? _ : constant$1(+_), link) : y$1; + }; + + link.context = function(_) { + return arguments.length ? ((context = _ == null ? null : _), link) : context; + }; + + return link; } -function Cardinal(context, tension) { - this._context = context; - this._k = (1 - tension) / 6; +function curveHorizontal(context, x0, y0, x1, y1) { + context.moveTo(x0, y0); + context.bezierCurveTo(x0 = (x0 + x1) / 2, y0, x0, y1, x1, y1); } -Cardinal.prototype = { - areaStart: function() { - this._line = 0; - }, - areaEnd: function() { - this._line = NaN; - }, - lineStart: function() { - this._x0 = this._x1 = this._x2 = - this._y0 = this._y1 = this._y2 = NaN; - this._point = 0; - }, - lineEnd: function() { - switch (this._point) { - case 2: this._context.lineTo(this._x2, this._y2); break; - case 3: point$3(this, this._x1, this._y1); break; - } - if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); - this._line = 1 - this._line; - }, - point: function(x, y) { - x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; - case 1: this._point = 2; this._x1 = x, this._y1 = y; break; - case 2: this._point = 3; // proceed - default: point$3(this, x, y); break; - } - this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; - this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; +function curveVertical(context, x0, y0, x1, y1) { + context.moveTo(x0, y0); + context.bezierCurveTo(x0, y0 = (y0 + y1) / 2, x1, y0, x1, y1); +} + +function curveRadial(context, x0, y0, x1, y1) { + var p0 = pointRadial(x0, y0), + p1 = pointRadial(x0, y0 = (y0 + y1) / 2), + p2 = pointRadial(x1, y0), + p3 = pointRadial(x1, y1); + context.moveTo(p0[0], p0[1]); + context.bezierCurveTo(p1[0], p1[1], p2[0], p2[1], p3[0], p3[1]); +} + +function linkHorizontal() { + return link(curveHorizontal); +} + +function linkVertical() { + return link(curveVertical); +} + +function linkRadial() { + var l = link(curveRadial); + l.angle = l.x, delete l.x; + l.radius = l.y, delete l.y; + return l; +} + +var circle = { + draw: function(context, size) { + var r = Math.sqrt(size / pi); + context.moveTo(r, 0); + context.arc(0, 0, r, 0, tau); } }; -var cardinal = (function custom(tension) { - - function cardinal(context) { - return new Cardinal(context, tension); +var cross = { + draw: function(context, size) { + var r = Math.sqrt(size / 5) / 2; + context.moveTo(-3 * r, -r); + context.lineTo(-r, -r); + context.lineTo(-r, -3 * r); + context.lineTo(r, -3 * r); + context.lineTo(r, -r); + context.lineTo(3 * r, -r); + context.lineTo(3 * r, r); + context.lineTo(r, r); + context.lineTo(r, 3 * r); + context.lineTo(-r, 3 * r); + context.lineTo(-r, r); + context.lineTo(-3 * r, r); + context.closePath(); } +}; - cardinal.tension = function(tension) { - return custom(+tension); - }; +var tan30 = Math.sqrt(1 / 3), + tan30_2 = tan30 * 2; - return cardinal; -})(0); +var diamond = { + draw: function(context, size) { + var y = Math.sqrt(size / tan30_2), + x = y * tan30; + context.moveTo(0, -y); + context.lineTo(x, 0); + context.lineTo(0, y); + context.lineTo(-x, 0); + context.closePath(); + } +}; -function CardinalClosed(context, tension) { - this._context = context; - this._k = (1 - tension) / 6; -} +var ka = 0.89081309152928522810, + kr = Math.sin(pi / 10) / Math.sin(7 * pi / 10), + kx = Math.sin(tau / 10) * kr, + ky = -Math.cos(tau / 10) * kr; -CardinalClosed.prototype = { - areaStart: noop$3, - areaEnd: noop$3, - lineStart: function() { - this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 = - this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN; - this._point = 0; - }, - lineEnd: function() { - switch (this._point) { - case 1: { - this._context.moveTo(this._x3, this._y3); - this._context.closePath(); - break; - } - case 2: { - this._context.lineTo(this._x3, this._y3); - this._context.closePath(); - break; - } - case 3: { - this.point(this._x3, this._y3); - this.point(this._x4, this._y4); - this.point(this._x5, this._y5); - break; - } - } - }, - point: function(x, y) { - x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; this._x3 = x, this._y3 = y; break; - case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break; - case 2: this._point = 3; this._x5 = x, this._y5 = y; break; - default: point$3(this, x, y); break; +var star = { + draw: function(context, size) { + var r = Math.sqrt(size * ka), + x = kx * r, + y = ky * r; + context.moveTo(0, -r); + context.lineTo(x, y); + for (var i = 1; i < 5; ++i) { + var a = tau * i / 5, + c = Math.cos(a), + s = Math.sin(a); + context.lineTo(s * r, -c * r); + context.lineTo(c * x - s * y, s * x + c * y); } - this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; - this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; + context.closePath(); } }; -var cardinalClosed = (function custom(tension) { - - function cardinal(context) { - return new CardinalClosed(context, tension); +var square = { + draw: function(context, size) { + var w = Math.sqrt(size), + x = -w / 2; + context.rect(x, x, w, w); } +}; - cardinal.tension = function(tension) { - return custom(+tension); - }; +var sqrt3 = Math.sqrt(3); - return cardinal; -})(0); +var triangle = { + draw: function(context, size) { + var y = -Math.sqrt(size / (sqrt3 * 3)); + context.moveTo(0, y * 2); + context.lineTo(-sqrt3 * y, -y); + context.lineTo(sqrt3 * y, -y); + context.closePath(); + } +}; -function CardinalOpen(context, tension) { - this._context = context; - this._k = (1 - tension) / 6; -} +var c = -0.5, + s = Math.sqrt(3) / 2, + k = 1 / Math.sqrt(12), + a = (k / 2 + 1) * 3; -CardinalOpen.prototype = { - areaStart: function() { - this._line = 0; - }, - areaEnd: function() { - this._line = NaN; - }, - lineStart: function() { - this._x0 = this._x1 = this._x2 = - this._y0 = this._y1 = this._y2 = NaN; - this._point = 0; - }, - lineEnd: function() { - if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath(); - this._line = 1 - this._line; - }, - point: function(x, y) { - x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; break; - case 1: this._point = 2; break; - case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break; - case 3: this._point = 4; // proceed - default: point$3(this, x, y); break; - } - this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; - this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; +var wye = { + draw: function(context, size) { + var r = Math.sqrt(size / a), + x0 = r / 2, + y0 = r * k, + x1 = x0, + y1 = r * k + r, + x2 = -x1, + y2 = y1; + context.moveTo(x0, y0); + context.lineTo(x1, y1); + context.lineTo(x2, y2); + context.lineTo(c * x0 - s * y0, s * x0 + c * y0); + context.lineTo(c * x1 - s * y1, s * x1 + c * y1); + context.lineTo(c * x2 - s * y2, s * x2 + c * y2); + context.lineTo(c * x0 + s * y0, c * y0 - s * x0); + context.lineTo(c * x1 + s * y1, c * y1 - s * x1); + context.lineTo(c * x2 + s * y2, c * y2 - s * x2); + context.closePath(); } }; -var cardinalOpen = (function custom(tension) { +var symbols = [ + circle, + cross, + diamond, + square, + star, + triangle, + wye +]; - function cardinal(context) { - return new CardinalOpen(context, tension); +function symbol(type, size) { + var context = null; + type = typeof type === "function" ? type : constant$1(type || circle); + size = typeof size === "function" ? size : constant$1(size === undefined ? 64 : +size); + + function symbol() { + var buffer; + if (!context) context = buffer = path(); + type.apply(this, arguments).draw(context, +size.apply(this, arguments)); + if (buffer) return context = null, buffer + "" || null; } - cardinal.tension = function(tension) { - return custom(+tension); + symbol.type = function(_) { + return arguments.length ? (type = typeof _ === "function" ? _ : constant$1(_), symbol) : type; }; - return cardinal; -})(0); + symbol.size = function(_) { + return arguments.length ? (size = typeof _ === "function" ? _ : constant$1(+_), symbol) : size; + }; -function point$4(that, x, y) { - var x1 = that._x1, - y1 = that._y1, - x2 = that._x2, - y2 = that._y2; + symbol.context = function(_) { + return arguments.length ? (context = _ == null ? null : _, symbol) : context; + }; - if (that._l01_a > epsilon$3) { - var a = 2 * that._l01_2a + 3 * that._l01_a * that._l12_a + that._l12_2a, - n = 3 * that._l01_a * (that._l01_a + that._l12_a); - x1 = (x1 * a - that._x0 * that._l12_2a + that._x2 * that._l01_2a) / n; - y1 = (y1 * a - that._y0 * that._l12_2a + that._y2 * that._l01_2a) / n; - } + return symbol; +} - if (that._l23_a > epsilon$3) { - var b = 2 * that._l23_2a + 3 * that._l23_a * that._l12_a + that._l12_2a, - m = 3 * that._l23_a * (that._l23_a + that._l12_a); - x2 = (x2 * b + that._x1 * that._l23_2a - x * that._l12_2a) / m; - y2 = (y2 * b + that._y1 * that._l23_2a - y * that._l12_2a) / m; - } +function noop() {} - that._context.bezierCurveTo(x1, y1, x2, y2, that._x2, that._y2); +function point$3(that, x, y) { + that._context.bezierCurveTo( + (2 * that._x0 + that._x1) / 3, + (2 * that._y0 + that._y1) / 3, + (that._x0 + 2 * that._x1) / 3, + (that._y0 + 2 * that._y1) / 3, + (that._x0 + 4 * that._x1 + x) / 6, + (that._y0 + 4 * that._y1 + y) / 6 + ); } -function CatmullRom(context, alpha) { +function Basis(context) { this._context = context; - this._alpha = alpha; } -CatmullRom.prototype = { +Basis.prototype = { areaStart: function() { this._line = 0; }, @@ -15989,133 +17622,90 @@ CatmullRom.prototype = { this._line = NaN; }, lineStart: function() { - this._x0 = this._x1 = this._x2 = - this._y0 = this._y1 = this._y2 = NaN; - this._l01_a = this._l12_a = this._l23_a = - this._l01_2a = this._l12_2a = this._l23_2a = + this._x0 = this._x1 = + this._y0 = this._y1 = NaN; this._point = 0; }, lineEnd: function() { switch (this._point) { - case 2: this._context.lineTo(this._x2, this._y2); break; - case 3: this.point(this._x2, this._y2); break; + case 3: point$3(this, this._x1, this._y1); // proceed + case 2: this._context.lineTo(this._x1, this._y1); break; } if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); this._line = 1 - this._line; }, point: function(x, y) { x = +x, y = +y; - - if (this._point) { - var x23 = this._x2 - x, - y23 = this._y2 - y; - this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha)); - } - switch (this._point) { case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; case 1: this._point = 2; break; - case 2: this._point = 3; // proceed - default: point$4(this, x, y); break; + case 2: this._point = 3; this._context.lineTo((5 * this._x0 + this._x1) / 6, (5 * this._y0 + this._y1) / 6); // proceed + default: point$3(this, x, y); break; } - - this._l01_a = this._l12_a, this._l12_a = this._l23_a; - this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a; - this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; - this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; - } -}; - -var catmullRom = (function custom(alpha) { - - function catmullRom(context) { - return alpha ? new CatmullRom(context, alpha) : new Cardinal(context, 0); + this._x0 = this._x1, this._x1 = x; + this._y0 = this._y1, this._y1 = y; } +}; - catmullRom.alpha = function(alpha) { - return custom(+alpha); - }; - - return catmullRom; -})(0.5); +function basis(context) { + return new Basis(context); +} -function CatmullRomClosed(context, alpha) { +function BasisClosed(context) { this._context = context; - this._alpha = alpha; } -CatmullRomClosed.prototype = { - areaStart: noop$3, - areaEnd: noop$3, +BasisClosed.prototype = { + areaStart: noop, + areaEnd: noop, lineStart: function() { - this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 = - this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN; - this._l01_a = this._l12_a = this._l23_a = - this._l01_2a = this._l12_2a = this._l23_2a = + this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = + this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = NaN; this._point = 0; }, lineEnd: function() { switch (this._point) { case 1: { - this._context.moveTo(this._x3, this._y3); + this._context.moveTo(this._x2, this._y2); this._context.closePath(); break; } case 2: { - this._context.lineTo(this._x3, this._y3); + this._context.moveTo((this._x2 + 2 * this._x3) / 3, (this._y2 + 2 * this._y3) / 3); + this._context.lineTo((this._x3 + 2 * this._x2) / 3, (this._y3 + 2 * this._y2) / 3); this._context.closePath(); break; } case 3: { + this.point(this._x2, this._y2); this.point(this._x3, this._y3); this.point(this._x4, this._y4); - this.point(this._x5, this._y5); break; } } }, point: function(x, y) { x = +x, y = +y; - - if (this._point) { - var x23 = this._x2 - x, - y23 = this._y2 - y; - this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha)); - } - switch (this._point) { - case 0: this._point = 1; this._x3 = x, this._y3 = y; break; - case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break; - case 2: this._point = 3; this._x5 = x, this._y5 = y; break; - default: point$4(this, x, y); break; + case 0: this._point = 1; this._x2 = x, this._y2 = y; break; + case 1: this._point = 2; this._x3 = x, this._y3 = y; break; + case 2: this._point = 3; this._x4 = x, this._y4 = y; this._context.moveTo((this._x0 + 4 * this._x1 + x) / 6, (this._y0 + 4 * this._y1 + y) / 6); break; + default: point$3(this, x, y); break; } - - this._l01_a = this._l12_a, this._l12_a = this._l23_a; - this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a; - this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; - this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; + this._x0 = this._x1, this._x1 = x; + this._y0 = this._y1, this._y1 = y; } }; -var catmullRomClosed = (function custom(alpha) { - - function catmullRom(context) { - return alpha ? new CatmullRomClosed(context, alpha) : new CardinalClosed(context, 0); - } - - catmullRom.alpha = function(alpha) { - return custom(+alpha); - }; - - return catmullRom; -})(0.5); +function basisClosed(context) { + return new BasisClosed(context); +} -function CatmullRomOpen(context, alpha) { +function BasisOpen(context) { this._context = context; - this._alpha = alpha; } -CatmullRomOpen.prototype = { +BasisOpen.prototype = { areaStart: function() { this._line = 0; }, @@ -16123,10 +17713,8 @@ CatmullRomOpen.prototype = { this._line = NaN; }, lineStart: function() { - this._x0 = this._x1 = this._x2 = - this._y0 = this._y1 = this._y2 = NaN; - this._l01_a = this._l12_a = this._l23_a = - this._l01_2a = this._l12_2a = this._l23_2a = + this._x0 = this._x1 = + this._y0 = this._y1 = NaN; this._point = 0; }, lineEnd: function() { @@ -16135,105 +17723,140 @@ CatmullRomOpen.prototype = { }, point: function(x, y) { x = +x, y = +y; - - if (this._point) { - var x23 = this._x2 - x, - y23 = this._y2 - y; - this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha)); - } - switch (this._point) { case 0: this._point = 1; break; case 1: this._point = 2; break; - case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break; + case 2: this._point = 3; var x0 = (this._x0 + 4 * this._x1 + x) / 6, y0 = (this._y0 + 4 * this._y1 + y) / 6; this._line ? this._context.lineTo(x0, y0) : this._context.moveTo(x0, y0); break; case 3: this._point = 4; // proceed - default: point$4(this, x, y); break; + default: point$3(this, x, y); break; } - - this._l01_a = this._l12_a, this._l12_a = this._l23_a; - this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a; - this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; - this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; + this._x0 = this._x1, this._x1 = x; + this._y0 = this._y1, this._y1 = y; } }; -var catmullRomOpen = (function custom(alpha) { +function basisOpen(context) { + return new BasisOpen(context); +} - function catmullRom(context) { - return alpha ? new CatmullRomOpen(context, alpha) : new CardinalOpen(context, 0); +class Bump { + constructor(context, x) { + this._context = context; + this._x = x; + } + areaStart() { + this._line = 0; + } + areaEnd() { + this._line = NaN; + } + lineStart() { + this._point = 0; + } + lineEnd() { + if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); + this._line = 1 - this._line; + } + point(x, y) { + x = +x, y = +y; + switch (this._point) { + case 0: { + this._point = 1; + if (this._line) this._context.lineTo(x, y); + else this._context.moveTo(x, y); + break; + } + case 1: this._point = 2; // proceed + default: { + if (this._x) this._context.bezierCurveTo(this._x0 = (this._x0 + x) / 2, this._y0, this._x0, y, x, y); + else this._context.bezierCurveTo(this._x0, this._y0 = (this._y0 + y) / 2, x, this._y0, x, y); + break; + } + } + this._x0 = x, this._y0 = y; } +} - catmullRom.alpha = function(alpha) { - return custom(+alpha); - }; +function bumpX(context) { + return new Bump(context, true); +} - return catmullRom; -})(0.5); +function bumpY(context) { + return new Bump(context, false); +} -function LinearClosed(context) { - this._context = context; +function Bundle(context, beta) { + this._basis = new Basis(context); + this._beta = beta; } -LinearClosed.prototype = { - areaStart: noop$3, - areaEnd: noop$3, +Bundle.prototype = { lineStart: function() { - this._point = 0; + this._x = []; + this._y = []; + this._basis.lineStart(); }, lineEnd: function() { - if (this._point) this._context.closePath(); + var x = this._x, + y = this._y, + j = x.length - 1; + + if (j > 0) { + var x0 = x[0], + y0 = y[0], + dx = x[j] - x0, + dy = y[j] - y0, + i = -1, + t; + + while (++i <= j) { + t = i / j; + this._basis.point( + this._beta * x[i] + (1 - this._beta) * (x0 + t * dx), + this._beta * y[i] + (1 - this._beta) * (y0 + t * dy) + ); + } + } + + this._x = this._y = null; + this._basis.lineEnd(); }, point: function(x, y) { - x = +x, y = +y; - if (this._point) this._context.lineTo(x, y); - else this._point = 1, this._context.moveTo(x, y); + this._x.push(+x); + this._y.push(+y); } }; -function linearClosed(context) { - return new LinearClosed(context); -} +var bundle = (function custom(beta) { -function sign$1(x) { - return x < 0 ? -1 : 1; -} + function bundle(context) { + return beta === 1 ? new Basis(context) : new Bundle(context, beta); + } -// Calculate the slopes of the tangents (Hermite-type interpolation) based on -// the following paper: Steffen, M. 1990. A Simple Method for Monotonic -// Interpolation in One Dimension. Astronomy and Astrophysics, Vol. 239, NO. -// NOV(II), P. 443, 1990. -function slope3(that, x2, y2) { - var h0 = that._x1 - that._x0, - h1 = x2 - that._x1, - s0 = (that._y1 - that._y0) / (h0 || h1 < 0 && -0), - s1 = (y2 - that._y1) / (h1 || h0 < 0 && -0), - p = (s0 * h1 + s1 * h0) / (h0 + h1); - return (sign$1(s0) + sign$1(s1)) * Math.min(Math.abs(s0), Math.abs(s1), 0.5 * Math.abs(p)) || 0; -} + bundle.beta = function(beta) { + return custom(+beta); + }; -// Calculate a one-sided slope. -function slope2(that, t) { - var h = that._x1 - that._x0; - return h ? (3 * (that._y1 - that._y0) / h - t) / 2 : t; -} + return bundle; +})(0.85); -// According to https://en.wikipedia.org/wiki/Cubic_Hermite_spline#Representations -// "you can express cubic Hermite interpolation in terms of cubic Bézier curves -// with respect to the four values p0, p0 + m0 / 3, p1 - m1 / 3, p1". -function point$5(that, t0, t1) { - var x0 = that._x0, - y0 = that._y0, - x1 = that._x1, - y1 = that._y1, - dx = (x1 - x0) / 3; - that._context.bezierCurveTo(x0 + dx, y0 + dx * t0, x1 - dx, y1 - dx * t1, x1, y1); +function point$2(that, x, y) { + that._context.bezierCurveTo( + that._x1 + that._k * (that._x2 - that._x0), + that._y1 + that._k * (that._y2 - that._y0), + that._x2 + that._k * (that._x1 - x), + that._y2 + that._k * (that._y1 - y), + that._x2, + that._y2 + ); } -function MonotoneX(context) { +function Cardinal(context, tension) { this._context = context; + this._k = (1 - tension) / 6; } -MonotoneX.prototype = { +Cardinal.prototype = { areaStart: function() { this._line = 0; }, @@ -16241,69 +17864,109 @@ MonotoneX.prototype = { this._line = NaN; }, lineStart: function() { - this._x0 = this._x1 = - this._y0 = this._y1 = - this._t0 = NaN; + this._x0 = this._x1 = this._x2 = + this._y0 = this._y1 = this._y2 = NaN; + this._point = 0; + }, + lineEnd: function() { + switch (this._point) { + case 2: this._context.lineTo(this._x2, this._y2); break; + case 3: point$2(this, this._x1, this._y1); break; + } + if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); + this._line = 1 - this._line; + }, + point: function(x, y) { + x = +x, y = +y; + switch (this._point) { + case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; + case 1: this._point = 2; this._x1 = x, this._y1 = y; break; + case 2: this._point = 3; // proceed + default: point$2(this, x, y); break; + } + this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; + this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; + } +}; + +var cardinal = (function custom(tension) { + + function cardinal(context) { + return new Cardinal(context, tension); + } + + cardinal.tension = function(tension) { + return custom(+tension); + }; + + return cardinal; +})(0); + +function CardinalClosed(context, tension) { + this._context = context; + this._k = (1 - tension) / 6; +} + +CardinalClosed.prototype = { + areaStart: noop, + areaEnd: noop, + lineStart: function() { + this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 = + this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN; this._point = 0; }, lineEnd: function() { switch (this._point) { - case 2: this._context.lineTo(this._x1, this._y1); break; - case 3: point$5(this, this._t0, slope2(this, this._t0)); break; + case 1: { + this._context.moveTo(this._x3, this._y3); + this._context.closePath(); + break; + } + case 2: { + this._context.lineTo(this._x3, this._y3); + this._context.closePath(); + break; + } + case 3: { + this.point(this._x3, this._y3); + this.point(this._x4, this._y4); + this.point(this._x5, this._y5); + break; + } } - if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); - this._line = 1 - this._line; }, point: function(x, y) { - var t1 = NaN; - x = +x, y = +y; - if (x === this._x1 && y === this._y1) return; // Ignore coincident points. switch (this._point) { - case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; - case 1: this._point = 2; break; - case 2: this._point = 3; point$5(this, slope2(this, t1 = slope3(this, x, y)), t1); break; - default: point$5(this, this._t0, t1 = slope3(this, x, y)); break; + case 0: this._point = 1; this._x3 = x, this._y3 = y; break; + case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break; + case 2: this._point = 3; this._x5 = x, this._y5 = y; break; + default: point$2(this, x, y); break; } - - this._x0 = this._x1, this._x1 = x; - this._y0 = this._y1, this._y1 = y; - this._t0 = t1; + this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; + this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; } }; -function MonotoneY(context) { - this._context = new ReflectContext(context); -} - -(MonotoneY.prototype = Object.create(MonotoneX.prototype)).point = function(x, y) { - MonotoneX.prototype.point.call(this, y, x); -}; - -function ReflectContext(context) { - this._context = context; -} +var cardinalClosed = (function custom(tension) { -ReflectContext.prototype = { - moveTo: function(x, y) { this._context.moveTo(y, x); }, - closePath: function() { this._context.closePath(); }, - lineTo: function(x, y) { this._context.lineTo(y, x); }, - bezierCurveTo: function(x1, y1, x2, y2, x, y) { this._context.bezierCurveTo(y1, x1, y2, x2, y, x); } -}; + function cardinal(context) { + return new CardinalClosed(context, tension); + } -function monotoneX(context) { - return new MonotoneX(context); -} + cardinal.tension = function(tension) { + return custom(+tension); + }; -function monotoneY(context) { - return new MonotoneY(context); -} + return cardinal; +})(0); -function Natural(context) { +function CardinalOpen(context, tension) { this._context = context; + this._k = (1 - tension) / 6; } -Natural.prototype = { +CardinalOpen.prototype = { areaStart: function() { this._line = 0; }, @@ -16311,66 +17974,70 @@ Natural.prototype = { this._line = NaN; }, lineStart: function() { - this._x = []; - this._y = []; + this._x0 = this._x1 = this._x2 = + this._y0 = this._y1 = this._y2 = NaN; + this._point = 0; }, lineEnd: function() { - var x = this._x, - y = this._y, - n = x.length; - - if (n) { - this._line ? this._context.lineTo(x[0], y[0]) : this._context.moveTo(x[0], y[0]); - if (n === 2) { - this._context.lineTo(x[1], y[1]); - } else { - var px = controlPoints(x), - py = controlPoints(y); - for (var i0 = 0, i1 = 1; i1 < n; ++i0, ++i1) { - this._context.bezierCurveTo(px[0][i0], py[0][i0], px[1][i0], py[1][i0], x[i1], y[i1]); - } - } - } - - if (this._line || (this._line !== 0 && n === 1)) this._context.closePath(); + if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath(); this._line = 1 - this._line; - this._x = this._y = null; }, point: function(x, y) { - this._x.push(+x); - this._y.push(+y); + x = +x, y = +y; + switch (this._point) { + case 0: this._point = 1; break; + case 1: this._point = 2; break; + case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break; + case 3: this._point = 4; // proceed + default: point$2(this, x, y); break; + } + this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; + this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; } }; -// See https://www.particleincell.com/2012/bezier-splines/ for derivation. -function controlPoints(x) { - var i, - n = x.length - 1, - m, - a = new Array(n), - b = new Array(n), - r = new Array(n); - a[0] = 0, b[0] = 2, r[0] = x[0] + 2 * x[1]; - for (i = 1; i < n - 1; ++i) a[i] = 1, b[i] = 4, r[i] = 4 * x[i] + 2 * x[i + 1]; - a[n - 1] = 2, b[n - 1] = 7, r[n - 1] = 8 * x[n - 1] + x[n]; - for (i = 1; i < n; ++i) m = a[i] / b[i - 1], b[i] -= m, r[i] -= m * r[i - 1]; - a[n - 1] = r[n - 1] / b[n - 1]; - for (i = n - 2; i >= 0; --i) a[i] = (r[i] - a[i + 1]) / b[i]; - b[n - 1] = (x[n] + a[n - 1]) / 2; - for (i = 0; i < n - 1; ++i) b[i] = 2 * x[i + 1] - a[i + 1]; - return [a, b]; -} +var cardinalOpen = (function custom(tension) { -function natural(context) { - return new Natural(context); + function cardinal(context) { + return new CardinalOpen(context, tension); + } + + cardinal.tension = function(tension) { + return custom(+tension); + }; + + return cardinal; +})(0); + +function point$1(that, x, y) { + var x1 = that._x1, + y1 = that._y1, + x2 = that._x2, + y2 = that._y2; + + if (that._l01_a > epsilon) { + var a = 2 * that._l01_2a + 3 * that._l01_a * that._l12_a + that._l12_2a, + n = 3 * that._l01_a * (that._l01_a + that._l12_a); + x1 = (x1 * a - that._x0 * that._l12_2a + that._x2 * that._l01_2a) / n; + y1 = (y1 * a - that._y0 * that._l12_2a + that._y2 * that._l01_2a) / n; + } + + if (that._l23_a > epsilon) { + var b = 2 * that._l23_2a + 3 * that._l23_a * that._l12_a + that._l12_2a, + m = 3 * that._l23_a * (that._l23_a + that._l12_a); + x2 = (x2 * b + that._x1 * that._l23_2a - x * that._l12_2a) / m; + y2 = (y2 * b + that._y1 * that._l23_2a - y * that._l12_2a) / m; + } + + that._context.bezierCurveTo(x1, y1, x2, y2, that._x2, that._y2); } -function Step(context, t) { +function CatmullRom(context, alpha) { this._context = context; - this._t = t; + this._alpha = alpha; } -Step.prototype = { +CatmullRom.prototype = { areaStart: function() { this._line = 0; }, @@ -16378,1224 +18045,632 @@ Step.prototype = { this._line = NaN; }, lineStart: function() { - this._x = this._y = NaN; + this._x0 = this._x1 = this._x2 = + this._y0 = this._y1 = this._y2 = NaN; + this._l01_a = this._l12_a = this._l23_a = + this._l01_2a = this._l12_2a = this._l23_2a = this._point = 0; }, lineEnd: function() { - if (0 < this._t && this._t < 1 && this._point === 2) this._context.lineTo(this._x, this._y); + switch (this._point) { + case 2: this._context.lineTo(this._x2, this._y2); break; + case 3: this.point(this._x2, this._y2); break; + } if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); - if (this._line >= 0) this._t = 1 - this._t, this._line = 1 - this._line; + this._line = 1 - this._line; }, point: function(x, y) { x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; - case 1: this._point = 2; // proceed - default: { - if (this._t <= 0) { - this._context.lineTo(this._x, y); - this._context.lineTo(x, y); - } else { - var x1 = this._x * (1 - this._t) + x * this._t; - this._context.lineTo(x1, this._y); - this._context.lineTo(x1, y); - } - break; - } - } - this._x = x, this._y = y; - } -}; - -function step(context) { - return new Step(context, 0.5); -} - -function stepBefore(context) { - return new Step(context, 0); -} - -function stepAfter(context) { - return new Step(context, 1); -} - -function none$1(series, order) { - if (!((n = series.length) > 1)) return; - for (var i = 1, j, s0, s1 = series[order[0]], n, m = s1.length; i < n; ++i) { - s0 = s1, s1 = series[order[i]]; - for (j = 0; j < m; ++j) { - s1[j][1] += s1[j][0] = isNaN(s0[j][1]) ? s0[j][0] : s0[j][1]; - } - } -} - -function none$2(series) { - var n = series.length, o = new Array(n); - while (--n >= 0) o[n] = n; - return o; -} - -function stackValue(d, key) { - return d[key]; -} - -function stack() { - var keys = constant$b([]), - order = none$2, - offset = none$1, - value = stackValue; - - function stack(data) { - var kz = keys.apply(this, arguments), - i, - m = data.length, - n = kz.length, - sz = new Array(n), - oz; - for (i = 0; i < n; ++i) { - for (var ki = kz[i], si = sz[i] = new Array(m), j = 0, sij; j < m; ++j) { - si[j] = sij = [0, +value(data[j], ki, j, data)]; - sij.data = data[j]; - } - si.key = ki; + if (this._point) { + var x23 = this._x2 - x, + y23 = this._y2 - y; + this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha)); } - for (i = 0, oz = order(sz); i < n; ++i) { - sz[oz[i]].index = i; + switch (this._point) { + case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; + case 1: this._point = 2; break; + case 2: this._point = 3; // proceed + default: point$1(this, x, y); break; } - offset(sz, oz); - return sz; + this._l01_a = this._l12_a, this._l12_a = this._l23_a; + this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a; + this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; + this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; } +}; - stack.keys = function(_) { - return arguments.length ? (keys = typeof _ === "function" ? _ : constant$b(slice$6.call(_)), stack) : keys; - }; - - stack.value = function(_) { - return arguments.length ? (value = typeof _ === "function" ? _ : constant$b(+_), stack) : value; - }; +var catmullRom = (function custom(alpha) { - stack.order = function(_) { - return arguments.length ? (order = _ == null ? none$2 : typeof _ === "function" ? _ : constant$b(slice$6.call(_)), stack) : order; - }; + function catmullRom(context) { + return alpha ? new CatmullRom(context, alpha) : new Cardinal(context, 0); + } - stack.offset = function(_) { - return arguments.length ? (offset = _ == null ? none$1 : _, stack) : offset; + catmullRom.alpha = function(alpha) { + return custom(+alpha); }; - return stack; -} + return catmullRom; +})(0.5); -function expand(series, order) { - if (!((n = series.length) > 0)) return; - for (var i, n, j = 0, m = series[0].length, y; j < m; ++j) { - for (y = i = 0; i < n; ++i) y += series[i][j][1] || 0; - if (y) for (i = 0; i < n; ++i) series[i][j][1] /= y; - } - none$1(series, order); +function CatmullRomClosed(context, alpha) { + this._context = context; + this._alpha = alpha; } -function diverging$1(series, order) { - if (!((n = series.length) > 0)) return; - for (var i, j = 0, d, dy, yp, yn, n, m = series[order[0]].length; j < m; ++j) { - for (yp = yn = 0, i = 0; i < n; ++i) { - if ((dy = (d = series[order[i]][j])[1] - d[0]) > 0) { - d[0] = yp, d[1] = yp += dy; - } else if (dy < 0) { - d[1] = yn, d[0] = yn += dy; - } else { - d[0] = 0, d[1] = dy; +CatmullRomClosed.prototype = { + areaStart: noop, + areaEnd: noop, + lineStart: function() { + this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 = + this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN; + this._l01_a = this._l12_a = this._l23_a = + this._l01_2a = this._l12_2a = this._l23_2a = + this._point = 0; + }, + lineEnd: function() { + switch (this._point) { + case 1: { + this._context.moveTo(this._x3, this._y3); + this._context.closePath(); + break; } - } - } -} - -function silhouette(series, order) { - if (!((n = series.length) > 0)) return; - for (var j = 0, s0 = series[order[0]], n, m = s0.length; j < m; ++j) { - for (var i = 0, y = 0; i < n; ++i) y += series[i][j][1] || 0; - s0[j][1] += s0[j][0] = -y / 2; - } - none$1(series, order); -} - -function wiggle(series, order) { - if (!((n = series.length) > 0) || !((m = (s0 = series[order[0]]).length) > 0)) return; - for (var y = 0, j = 1, s0, m, n; j < m; ++j) { - for (var i = 0, s1 = 0, s2 = 0; i < n; ++i) { - var si = series[order[i]], - sij0 = si[j][1] || 0, - sij1 = si[j - 1][1] || 0, - s3 = (sij0 - sij1) / 2; - for (var k = 0; k < i; ++k) { - var sk = series[order[k]], - skj0 = sk[j][1] || 0, - skj1 = sk[j - 1][1] || 0; - s3 += skj0 - skj1; + case 2: { + this._context.lineTo(this._x3, this._y3); + this._context.closePath(); + break; + } + case 3: { + this.point(this._x3, this._y3); + this.point(this._x4, this._y4); + this.point(this._x5, this._y5); + break; } - s1 += sij0, s2 += s3 * sij0; } - s0[j - 1][1] += s0[j - 1][0] = y; - if (s1) y -= s2 / s1; - } - s0[j - 1][1] += s0[j - 1][0] = y; - none$1(series, order); -} - -function appearance(series) { - var peaks = series.map(peak); - return none$2(series).sort(function(a, b) { return peaks[a] - peaks[b]; }); -} - -function peak(series) { - var i = -1, j = 0, n = series.length, vi, vj = -Infinity; - while (++i < n) if ((vi = +series[i][1]) > vj) vj = vi, j = i; - return j; -} - -function ascending$3(series) { - var sums = series.map(sum$2); - return none$2(series).sort(function(a, b) { return sums[a] - sums[b]; }); -} - -function sum$2(series) { - var s = 0, i = -1, n = series.length, v; - while (++i < n) if (v = +series[i][1]) s += v; - return s; -} - -function descending$2(series) { - return ascending$3(series).reverse(); -} + }, + point: function(x, y) { + x = +x, y = +y; -function insideOut(series) { - var n = series.length, - i, - j, - sums = series.map(sum$2), - order = appearance(series), - top = 0, - bottom = 0, - tops = [], - bottoms = []; + if (this._point) { + var x23 = this._x2 - x, + y23 = this._y2 - y; + this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha)); + } - for (i = 0; i < n; ++i) { - j = order[i]; - if (top < bottom) { - top += sums[j]; - tops.push(j); - } else { - bottom += sums[j]; - bottoms.push(j); + switch (this._point) { + case 0: this._point = 1; this._x3 = x, this._y3 = y; break; + case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break; + case 2: this._point = 3; this._x5 = x, this._y5 = y; break; + default: point$1(this, x, y); break; } + + this._l01_a = this._l12_a, this._l12_a = this._l23_a; + this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a; + this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; + this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; } +}; - return bottoms.reverse().concat(tops); -} +var catmullRomClosed = (function custom(alpha) { -function reverse(series) { - return none$2(series).reverse(); -} + function catmullRom(context) { + return alpha ? new CatmullRomClosed(context, alpha) : new CardinalClosed(context, 0); + } -function constant$c(x) { - return function() { - return x; + catmullRom.alpha = function(alpha) { + return custom(+alpha); }; -} - -function x$4(d) { - return d[0]; -} -function y$4(d) { - return d[1]; -} - -function RedBlackTree() { - this._ = null; // root node -} + return catmullRom; +})(0.5); -function RedBlackNode(node) { - node.U = // parent node - node.C = // color - true for red, false for black - node.L = // left node - node.R = // right node - node.P = // previous node - node.N = null; // next node +function CatmullRomOpen(context, alpha) { + this._context = context; + this._alpha = alpha; } -RedBlackTree.prototype = { - constructor: RedBlackTree, - - insert: function(after, node) { - var parent, grandpa, uncle; - - if (after) { - node.P = after; - node.N = after.N; - if (after.N) after.N.P = node; - after.N = node; - if (after.R) { - after = after.R; - while (after.L) after = after.L; - after.L = node; - } else { - after.R = node; - } - parent = after; - } else if (this._) { - after = RedBlackFirst(this._); - node.P = null; - node.N = after; - after.P = after.L = node; - parent = after; - } else { - node.P = node.N = null; - this._ = node; - parent = null; - } - node.L = node.R = null; - node.U = parent; - node.C = true; - - after = node; - while (parent && parent.C) { - grandpa = parent.U; - if (parent === grandpa.L) { - uncle = grandpa.R; - if (uncle && uncle.C) { - parent.C = uncle.C = false; - grandpa.C = true; - after = grandpa; - } else { - if (after === parent.R) { - RedBlackRotateLeft(this, parent); - after = parent; - parent = after.U; - } - parent.C = false; - grandpa.C = true; - RedBlackRotateRight(this, grandpa); - } - } else { - uncle = grandpa.L; - if (uncle && uncle.C) { - parent.C = uncle.C = false; - grandpa.C = true; - after = grandpa; - } else { - if (after === parent.L) { - RedBlackRotateRight(this, parent); - after = parent; - parent = after.U; - } - parent.C = false; - grandpa.C = true; - RedBlackRotateLeft(this, grandpa); - } - } - parent = after.U; - } - this._.C = false; +CatmullRomOpen.prototype = { + areaStart: function() { + this._line = 0; }, + areaEnd: function() { + this._line = NaN; + }, + lineStart: function() { + this._x0 = this._x1 = this._x2 = + this._y0 = this._y1 = this._y2 = NaN; + this._l01_a = this._l12_a = this._l23_a = + this._l01_2a = this._l12_2a = this._l23_2a = + this._point = 0; + }, + lineEnd: function() { + if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath(); + this._line = 1 - this._line; + }, + point: function(x, y) { + x = +x, y = +y; - remove: function(node) { - if (node.N) node.N.P = node.P; - if (node.P) node.P.N = node.N; - node.N = node.P = null; - - var parent = node.U, - sibling, - left = node.L, - right = node.R, - next, - red; - - if (!left) next = right; - else if (!right) next = left; - else next = RedBlackFirst(right); + if (this._point) { + var x23 = this._x2 - x, + y23 = this._y2 - y; + this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha)); + } - if (parent) { - if (parent.L === node) parent.L = next; - else parent.R = next; - } else { - this._ = next; - } - - if (left && right) { - red = next.C; - next.C = node.C; - next.L = left; - left.U = next; - if (next !== right) { - parent = next.U; - next.U = node.U; - node = next.R; - parent.L = node; - next.R = right; - right.U = next; - } else { - next.U = parent; - parent = next; - node = next.R; - } - } else { - red = node.C; - node = next; + switch (this._point) { + case 0: this._point = 1; break; + case 1: this._point = 2; break; + case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break; + case 3: this._point = 4; // proceed + default: point$1(this, x, y); break; } - if (node) node.U = parent; - if (red) return; - if (node && node.C) { node.C = false; return; } + this._l01_a = this._l12_a, this._l12_a = this._l23_a; + this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a; + this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; + this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; + } +}; - do { - if (node === this._) break; - if (node === parent.L) { - sibling = parent.R; - if (sibling.C) { - sibling.C = false; - parent.C = true; - RedBlackRotateLeft(this, parent); - sibling = parent.R; - } - if ((sibling.L && sibling.L.C) - || (sibling.R && sibling.R.C)) { - if (!sibling.R || !sibling.R.C) { - sibling.L.C = false; - sibling.C = true; - RedBlackRotateRight(this, sibling); - sibling = parent.R; - } - sibling.C = parent.C; - parent.C = sibling.R.C = false; - RedBlackRotateLeft(this, parent); - node = this._; - break; - } - } else { - sibling = parent.L; - if (sibling.C) { - sibling.C = false; - parent.C = true; - RedBlackRotateRight(this, parent); - sibling = parent.L; - } - if ((sibling.L && sibling.L.C) - || (sibling.R && sibling.R.C)) { - if (!sibling.L || !sibling.L.C) { - sibling.R.C = false; - sibling.C = true; - RedBlackRotateLeft(this, sibling); - sibling = parent.L; - } - sibling.C = parent.C; - parent.C = sibling.L.C = false; - RedBlackRotateRight(this, parent); - node = this._; - break; - } - } - sibling.C = true; - node = parent; - parent = parent.U; - } while (!node.C); +var catmullRomOpen = (function custom(alpha) { - if (node) node.C = false; + function catmullRom(context) { + return alpha ? new CatmullRomOpen(context, alpha) : new CardinalOpen(context, 0); } -}; -function RedBlackRotateLeft(tree, node) { - var p = node, - q = node.R, - parent = p.U; + catmullRom.alpha = function(alpha) { + return custom(+alpha); + }; - if (parent) { - if (parent.L === p) parent.L = q; - else parent.R = q; - } else { - tree._ = q; - } + return catmullRom; +})(0.5); - q.U = parent; - p.U = q; - p.R = q.L; - if (p.R) p.R.U = p; - q.L = p; +function LinearClosed(context) { + this._context = context; } -function RedBlackRotateRight(tree, node) { - var p = node, - q = node.L, - parent = p.U; - - if (parent) { - if (parent.L === p) parent.L = q; - else parent.R = q; - } else { - tree._ = q; +LinearClosed.prototype = { + areaStart: noop, + areaEnd: noop, + lineStart: function() { + this._point = 0; + }, + lineEnd: function() { + if (this._point) this._context.closePath(); + }, + point: function(x, y) { + x = +x, y = +y; + if (this._point) this._context.lineTo(x, y); + else this._point = 1, this._context.moveTo(x, y); } +}; - q.U = parent; - p.U = q; - p.L = q.R; - if (p.L) p.L.U = p; - q.R = p; +function linearClosed(context) { + return new LinearClosed(context); } -function RedBlackFirst(node) { - while (node.L) node = node.L; - return node; +function sign(x) { + return x < 0 ? -1 : 1; } -function createEdge(left, right, v0, v1) { - var edge = [null, null], - index = edges.push(edge) - 1; - edge.left = left; - edge.right = right; - if (v0) setEdgeEnd(edge, left, right, v0); - if (v1) setEdgeEnd(edge, right, left, v1); - cells[left.index].halfedges.push(index); - cells[right.index].halfedges.push(index); - return edge; +// Calculate the slopes of the tangents (Hermite-type interpolation) based on +// the following paper: Steffen, M. 1990. A Simple Method for Monotonic +// Interpolation in One Dimension. Astronomy and Astrophysics, Vol. 239, NO. +// NOV(II), P. 443, 1990. +function slope3(that, x2, y2) { + var h0 = that._x1 - that._x0, + h1 = x2 - that._x1, + s0 = (that._y1 - that._y0) / (h0 || h1 < 0 && -0), + s1 = (y2 - that._y1) / (h1 || h0 < 0 && -0), + p = (s0 * h1 + s1 * h0) / (h0 + h1); + return (sign(s0) + sign(s1)) * Math.min(Math.abs(s0), Math.abs(s1), 0.5 * Math.abs(p)) || 0; } -function createBorderEdge(left, v0, v1) { - var edge = [v0, v1]; - edge.left = left; - return edge; +// Calculate a one-sided slope. +function slope2(that, t) { + var h = that._x1 - that._x0; + return h ? (3 * (that._y1 - that._y0) / h - t) / 2 : t; } -function setEdgeEnd(edge, left, right, vertex) { - if (!edge[0] && !edge[1]) { - edge[0] = vertex; - edge.left = left; - edge.right = right; - } else if (edge.left === right) { - edge[1] = vertex; - } else { - edge[0] = vertex; - } +// According to https://en.wikipedia.org/wiki/Cubic_Hermite_spline#Representations +// "you can express cubic Hermite interpolation in terms of cubic Bézier curves +// with respect to the four values p0, p0 + m0 / 3, p1 - m1 / 3, p1". +function point(that, t0, t1) { + var x0 = that._x0, + y0 = that._y0, + x1 = that._x1, + y1 = that._y1, + dx = (x1 - x0) / 3; + that._context.bezierCurveTo(x0 + dx, y0 + dx * t0, x1 - dx, y1 - dx * t1, x1, y1); } -// Liang–Barsky line clipping. -function clipEdge(edge, x0, y0, x1, y1) { - var a = edge[0], - b = edge[1], - ax = a[0], - ay = a[1], - bx = b[0], - by = b[1], - t0 = 0, - t1 = 1, - dx = bx - ax, - dy = by - ay, - r; - - r = x0 - ax; - if (!dx && r > 0) return; - r /= dx; - if (dx < 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } else if (dx > 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } - - r = x1 - ax; - if (!dx && r < 0) return; - r /= dx; - if (dx < 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } else if (dx > 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } - - r = y0 - ay; - if (!dy && r > 0) return; - r /= dy; - if (dy < 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } else if (dy > 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } - - r = y1 - ay; - if (!dy && r < 0) return; - r /= dy; - if (dy < 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } else if (dy > 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } - - if (!(t0 > 0) && !(t1 < 1)) return true; // TODO Better check? - - if (t0 > 0) edge[0] = [ax + t0 * dx, ay + t0 * dy]; - if (t1 < 1) edge[1] = [ax + t1 * dx, ay + t1 * dy]; - return true; +function MonotoneX(context) { + this._context = context; } -function connectEdge(edge, x0, y0, x1, y1) { - var v1 = edge[1]; - if (v1) return true; - - var v0 = edge[0], - left = edge.left, - right = edge.right, - lx = left[0], - ly = left[1], - rx = right[0], - ry = right[1], - fx = (lx + rx) / 2, - fy = (ly + ry) / 2, - fm, - fb; - - if (ry === ly) { - if (fx < x0 || fx >= x1) return; - if (lx > rx) { - if (!v0) v0 = [fx, y0]; - else if (v0[1] >= y1) return; - v1 = [fx, y1]; - } else { - if (!v0) v0 = [fx, y1]; - else if (v0[1] < y0) return; - v1 = [fx, y0]; +MonotoneX.prototype = { + areaStart: function() { + this._line = 0; + }, + areaEnd: function() { + this._line = NaN; + }, + lineStart: function() { + this._x0 = this._x1 = + this._y0 = this._y1 = + this._t0 = NaN; + this._point = 0; + }, + lineEnd: function() { + switch (this._point) { + case 2: this._context.lineTo(this._x1, this._y1); break; + case 3: point(this, this._t0, slope2(this, this._t0)); break; } - } else { - fm = (lx - rx) / (ry - ly); - fb = fy - fm * fx; - if (fm < -1 || fm > 1) { - if (lx > rx) { - if (!v0) v0 = [(y0 - fb) / fm, y0]; - else if (v0[1] >= y1) return; - v1 = [(y1 - fb) / fm, y1]; - } else { - if (!v0) v0 = [(y1 - fb) / fm, y1]; - else if (v0[1] < y0) return; - v1 = [(y0 - fb) / fm, y0]; - } - } else { - if (ly < ry) { - if (!v0) v0 = [x0, fm * x0 + fb]; - else if (v0[0] >= x1) return; - v1 = [x1, fm * x1 + fb]; - } else { - if (!v0) v0 = [x1, fm * x1 + fb]; - else if (v0[0] < x0) return; - v1 = [x0, fm * x0 + fb]; - } + if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); + this._line = 1 - this._line; + }, + point: function(x, y) { + var t1 = NaN; + + x = +x, y = +y; + if (x === this._x1 && y === this._y1) return; // Ignore coincident points. + switch (this._point) { + case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; + case 1: this._point = 2; break; + case 2: this._point = 3; point(this, slope2(this, t1 = slope3(this, x, y)), t1); break; + default: point(this, this._t0, t1 = slope3(this, x, y)); break; } + + this._x0 = this._x1, this._x1 = x; + this._y0 = this._y1, this._y1 = y; + this._t0 = t1; } +}; - edge[0] = v0; - edge[1] = v1; - return true; +function MonotoneY(context) { + this._context = new ReflectContext(context); } -function clipEdges(x0, y0, x1, y1) { - var i = edges.length, - edge; +(MonotoneY.prototype = Object.create(MonotoneX.prototype)).point = function(x, y) { + MonotoneX.prototype.point.call(this, y, x); +}; - while (i--) { - if (!connectEdge(edge = edges[i], x0, y0, x1, y1) - || !clipEdge(edge, x0, y0, x1, y1) - || !(Math.abs(edge[0][0] - edge[1][0]) > epsilon$4 - || Math.abs(edge[0][1] - edge[1][1]) > epsilon$4)) { - delete edges[i]; - } - } +function ReflectContext(context) { + this._context = context; } -function createCell(site) { - return cells[site.index] = { - site: site, - halfedges: [] - }; -} +ReflectContext.prototype = { + moveTo: function(x, y) { this._context.moveTo(y, x); }, + closePath: function() { this._context.closePath(); }, + lineTo: function(x, y) { this._context.lineTo(y, x); }, + bezierCurveTo: function(x1, y1, x2, y2, x, y) { this._context.bezierCurveTo(y1, x1, y2, x2, y, x); } +}; -function cellHalfedgeAngle(cell, edge) { - var site = cell.site, - va = edge.left, - vb = edge.right; - if (site === vb) vb = va, va = site; - if (vb) return Math.atan2(vb[1] - va[1], vb[0] - va[0]); - if (site === va) va = edge[1], vb = edge[0]; - else va = edge[0], vb = edge[1]; - return Math.atan2(va[0] - vb[0], vb[1] - va[1]); +function monotoneX(context) { + return new MonotoneX(context); } -function cellHalfedgeStart(cell, edge) { - return edge[+(edge.left !== cell.site)]; +function monotoneY(context) { + return new MonotoneY(context); } -function cellHalfedgeEnd(cell, edge) { - return edge[+(edge.left === cell.site)]; +function Natural(context) { + this._context = context; } -function sortCellHalfedges() { - for (var i = 0, n = cells.length, cell, halfedges, j, m; i < n; ++i) { - if ((cell = cells[i]) && (m = (halfedges = cell.halfedges).length)) { - var index = new Array(m), - array = new Array(m); - for (j = 0; j < m; ++j) index[j] = j, array[j] = cellHalfedgeAngle(cell, edges[halfedges[j]]); - index.sort(function(i, j) { return array[j] - array[i]; }); - for (j = 0; j < m; ++j) array[j] = halfedges[index[j]]; - for (j = 0; j < m; ++j) halfedges[j] = array[j]; +Natural.prototype = { + areaStart: function() { + this._line = 0; + }, + areaEnd: function() { + this._line = NaN; + }, + lineStart: function() { + this._x = []; + this._y = []; + }, + lineEnd: function() { + var x = this._x, + y = this._y, + n = x.length; + + if (n) { + this._line ? this._context.lineTo(x[0], y[0]) : this._context.moveTo(x[0], y[0]); + if (n === 2) { + this._context.lineTo(x[1], y[1]); + } else { + var px = controlPoints(x), + py = controlPoints(y); + for (var i0 = 0, i1 = 1; i1 < n; ++i0, ++i1) { + this._context.bezierCurveTo(px[0][i0], py[0][i0], px[1][i0], py[1][i0], x[i1], y[i1]); + } + } } + + if (this._line || (this._line !== 0 && n === 1)) this._context.closePath(); + this._line = 1 - this._line; + this._x = this._y = null; + }, + point: function(x, y) { + this._x.push(+x); + this._y.push(+y); } -} +}; -function clipCells(x0, y0, x1, y1) { - var nCells = cells.length, - iCell, - cell, - site, - iHalfedge, - halfedges, - nHalfedges, - start, - startX, - startY, - end, - endX, - endY, - cover = true; +// See https://www.particleincell.com/2012/bezier-splines/ for derivation. +function controlPoints(x) { + var i, + n = x.length - 1, + m, + a = new Array(n), + b = new Array(n), + r = new Array(n); + a[0] = 0, b[0] = 2, r[0] = x[0] + 2 * x[1]; + for (i = 1; i < n - 1; ++i) a[i] = 1, b[i] = 4, r[i] = 4 * x[i] + 2 * x[i + 1]; + a[n - 1] = 2, b[n - 1] = 7, r[n - 1] = 8 * x[n - 1] + x[n]; + for (i = 1; i < n; ++i) m = a[i] / b[i - 1], b[i] -= m, r[i] -= m * r[i - 1]; + a[n - 1] = r[n - 1] / b[n - 1]; + for (i = n - 2; i >= 0; --i) a[i] = (r[i] - a[i + 1]) / b[i]; + b[n - 1] = (x[n] + a[n - 1]) / 2; + for (i = 0; i < n - 1; ++i) b[i] = 2 * x[i + 1] - a[i + 1]; + return [a, b]; +} - for (iCell = 0; iCell < nCells; ++iCell) { - if (cell = cells[iCell]) { - site = cell.site; - halfedges = cell.halfedges; - iHalfedge = halfedges.length; +function natural(context) { + return new Natural(context); +} - // Remove any dangling clipped edges. - while (iHalfedge--) { - if (!edges[halfedges[iHalfedge]]) { - halfedges.splice(iHalfedge, 1); - } - } +function Step(context, t) { + this._context = context; + this._t = t; +} - // Insert any border edges as necessary. - iHalfedge = 0, nHalfedges = halfedges.length; - while (iHalfedge < nHalfedges) { - end = cellHalfedgeEnd(cell, edges[halfedges[iHalfedge]]), endX = end[0], endY = end[1]; - start = cellHalfedgeStart(cell, edges[halfedges[++iHalfedge % nHalfedges]]), startX = start[0], startY = start[1]; - if (Math.abs(endX - startX) > epsilon$4 || Math.abs(endY - startY) > epsilon$4) { - halfedges.splice(iHalfedge, 0, edges.push(createBorderEdge(site, end, - Math.abs(endX - x0) < epsilon$4 && y1 - endY > epsilon$4 ? [x0, Math.abs(startX - x0) < epsilon$4 ? startY : y1] - : Math.abs(endY - y1) < epsilon$4 && x1 - endX > epsilon$4 ? [Math.abs(startY - y1) < epsilon$4 ? startX : x1, y1] - : Math.abs(endX - x1) < epsilon$4 && endY - y0 > epsilon$4 ? [x1, Math.abs(startX - x1) < epsilon$4 ? startY : y0] - : Math.abs(endY - y0) < epsilon$4 && endX - x0 > epsilon$4 ? [Math.abs(startY - y0) < epsilon$4 ? startX : x0, y0] - : null)) - 1); - ++nHalfedges; +Step.prototype = { + areaStart: function() { + this._line = 0; + }, + areaEnd: function() { + this._line = NaN; + }, + lineStart: function() { + this._x = this._y = NaN; + this._point = 0; + }, + lineEnd: function() { + if (0 < this._t && this._t < 1 && this._point === 2) this._context.lineTo(this._x, this._y); + if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); + if (this._line >= 0) this._t = 1 - this._t, this._line = 1 - this._line; + }, + point: function(x, y) { + x = +x, y = +y; + switch (this._point) { + case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; + case 1: this._point = 2; // proceed + default: { + if (this._t <= 0) { + this._context.lineTo(this._x, y); + this._context.lineTo(x, y); + } else { + var x1 = this._x * (1 - this._t) + x * this._t; + this._context.lineTo(x1, this._y); + this._context.lineTo(x1, y); } + break; } - - if (nHalfedges) cover = false; - } - } - - // If there weren’t any edges, have the closest site cover the extent. - // It doesn’t matter which corner of the extent we measure! - if (cover) { - var dx, dy, d2, dc = Infinity; - - for (iCell = 0, cover = null; iCell < nCells; ++iCell) { - if (cell = cells[iCell]) { - site = cell.site; - dx = site[0] - x0; - dy = site[1] - y0; - d2 = dx * dx + dy * dy; - if (d2 < dc) dc = d2, cover = cell; - } - } - - if (cover) { - var v00 = [x0, y0], v01 = [x0, y1], v11 = [x1, y1], v10 = [x1, y0]; - cover.halfedges.push( - edges.push(createBorderEdge(site = cover.site, v00, v01)) - 1, - edges.push(createBorderEdge(site, v01, v11)) - 1, - edges.push(createBorderEdge(site, v11, v10)) - 1, - edges.push(createBorderEdge(site, v10, v00)) - 1 - ); } + this._x = x, this._y = y; } +}; - // Lastly delete any cells with no edges; these were entirely clipped. - for (iCell = 0; iCell < nCells; ++iCell) { - if (cell = cells[iCell]) { - if (!cell.halfedges.length) { - delete cells[iCell]; - } - } - } +function step(context) { + return new Step(context, 0.5); } -var circlePool = []; - -var firstCircle; - -function Circle() { - RedBlackNode(this); - this.x = - this.y = - this.arc = - this.site = - this.cy = null; +function stepBefore(context) { + return new Step(context, 0); } -function attachCircle(arc) { - var lArc = arc.P, - rArc = arc.N; - - if (!lArc || !rArc) return; - - var lSite = lArc.site, - cSite = arc.site, - rSite = rArc.site; - - if (lSite === rSite) return; - - var bx = cSite[0], - by = cSite[1], - ax = lSite[0] - bx, - ay = lSite[1] - by, - cx = rSite[0] - bx, - cy = rSite[1] - by; - - var d = 2 * (ax * cy - ay * cx); - if (d >= -epsilon2$2) return; - - var ha = ax * ax + ay * ay, - hc = cx * cx + cy * cy, - x = (cy * ha - ay * hc) / d, - y = (ax * hc - cx * ha) / d; - - var circle = circlePool.pop() || new Circle; - circle.arc = arc; - circle.site = cSite; - circle.x = x + bx; - circle.y = (circle.cy = y + by) + Math.sqrt(x * x + y * y); // y bottom - - arc.circle = circle; - - var before = null, - node = circles._; - - while (node) { - if (circle.y < node.y || (circle.y === node.y && circle.x <= node.x)) { - if (node.L) node = node.L; - else { before = node.P; break; } - } else { - if (node.R) node = node.R; - else { before = node; break; } - } - } - - circles.insert(before, circle); - if (!before) firstCircle = circle; +function stepAfter(context) { + return new Step(context, 1); } -function detachCircle(arc) { - var circle = arc.circle; - if (circle) { - if (!circle.P) firstCircle = circle.N; - circles.remove(circle); - circlePool.push(circle); - RedBlackNode(circle); - arc.circle = null; +function none$1(series, order) { + if (!((n = series.length) > 1)) return; + for (var i = 1, j, s0, s1 = series[order[0]], n, m = s1.length; i < n; ++i) { + s0 = s1, s1 = series[order[i]]; + for (j = 0; j < m; ++j) { + s1[j][1] += s1[j][0] = isNaN(s0[j][1]) ? s0[j][0] : s0[j][1]; + } } } -var beachPool = []; - -function Beach() { - RedBlackNode(this); - this.edge = - this.site = - this.circle = null; +function none(series) { + var n = series.length, o = new Array(n); + while (--n >= 0) o[n] = n; + return o; } -function createBeach(site) { - var beach = beachPool.pop() || new Beach; - beach.site = site; - return beach; +function stackValue(d, key) { + return d[key]; } -function detachBeach(beach) { - detachCircle(beach); - beaches.remove(beach); - beachPool.push(beach); - RedBlackNode(beach); +function stackSeries(key) { + const series = []; + series.key = key; + return series; } -function removeBeach(beach) { - var circle = beach.circle, - x = circle.x, - y = circle.cy, - vertex = [x, y], - previous = beach.P, - next = beach.N, - disappearing = [beach]; +function stack() { + var keys = constant$1([]), + order = none, + offset = none$1, + value = stackValue; - detachBeach(beach); + function stack(data) { + var sz = Array.from(keys.apply(this, arguments), stackSeries), + i, n = sz.length, j = -1, + oz; - var lArc = previous; - while (lArc.circle - && Math.abs(x - lArc.circle.x) < epsilon$4 - && Math.abs(y - lArc.circle.cy) < epsilon$4) { - previous = lArc.P; - disappearing.unshift(lArc); - detachBeach(lArc); - lArc = previous; - } + for (const d of data) { + for (i = 0, ++j; i < n; ++i) { + (sz[i][j] = [0, +value(d, sz[i].key, j, data)]).data = d; + } + } - disappearing.unshift(lArc); - detachCircle(lArc); + for (i = 0, oz = array(order(sz)); i < n; ++i) { + sz[oz[i]].index = i; + } - var rArc = next; - while (rArc.circle - && Math.abs(x - rArc.circle.x) < epsilon$4 - && Math.abs(y - rArc.circle.cy) < epsilon$4) { - next = rArc.N; - disappearing.push(rArc); - detachBeach(rArc); - rArc = next; + offset(sz, oz); + return sz; } - disappearing.push(rArc); - detachCircle(rArc); + stack.keys = function(_) { + return arguments.length ? (keys = typeof _ === "function" ? _ : constant$1(Array.from(_)), stack) : keys; + }; - var nArcs = disappearing.length, - iArc; - for (iArc = 1; iArc < nArcs; ++iArc) { - rArc = disappearing[iArc]; - lArc = disappearing[iArc - 1]; - setEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex); - } + stack.value = function(_) { + return arguments.length ? (value = typeof _ === "function" ? _ : constant$1(+_), stack) : value; + }; + + stack.order = function(_) { + return arguments.length ? (order = _ == null ? none : typeof _ === "function" ? _ : constant$1(Array.from(_)), stack) : order; + }; - lArc = disappearing[0]; - rArc = disappearing[nArcs - 1]; - rArc.edge = createEdge(lArc.site, rArc.site, null, vertex); + stack.offset = function(_) { + return arguments.length ? (offset = _ == null ? none$1 : _, stack) : offset; + }; - attachCircle(lArc); - attachCircle(rArc); + return stack; } -function addBeach(site) { - var x = site[0], - directrix = site[1], - lArc, - rArc, - dxl, - dxr, - node = beaches._; +function expand(series, order) { + if (!((n = series.length) > 0)) return; + for (var i, n, j = 0, m = series[0].length, y; j < m; ++j) { + for (y = i = 0; i < n; ++i) y += series[i][j][1] || 0; + if (y) for (i = 0; i < n; ++i) series[i][j][1] /= y; + } + none$1(series, order); +} - while (node) { - dxl = leftBreakPoint(node, directrix) - x; - if (dxl > epsilon$4) node = node.L; else { - dxr = x - rightBreakPoint(node, directrix); - if (dxr > epsilon$4) { - if (!node.R) { - lArc = node; - break; - } - node = node.R; +function diverging(series, order) { + if (!((n = series.length) > 0)) return; + for (var i, j = 0, d, dy, yp, yn, n, m = series[order[0]].length; j < m; ++j) { + for (yp = yn = 0, i = 0; i < n; ++i) { + if ((dy = (d = series[order[i]][j])[1] - d[0]) > 0) { + d[0] = yp, d[1] = yp += dy; + } else if (dy < 0) { + d[1] = yn, d[0] = yn += dy; } else { - if (dxl > -epsilon$4) { - lArc = node.P; - rArc = node; - } else if (dxr > -epsilon$4) { - lArc = node; - rArc = node.N; - } else { - lArc = rArc = node; - } - break; + d[0] = 0, d[1] = dy; } } } +} - createCell(site); - var newArc = createBeach(site); - beaches.insert(lArc, newArc); - - if (!lArc && !rArc) return; - - if (lArc === rArc) { - detachCircle(lArc); - rArc = createBeach(lArc.site); - beaches.insert(newArc, rArc); - newArc.edge = rArc.edge = createEdge(lArc.site, newArc.site); - attachCircle(lArc); - attachCircle(rArc); - return; +function silhouette(series, order) { + if (!((n = series.length) > 0)) return; + for (var j = 0, s0 = series[order[0]], n, m = s0.length; j < m; ++j) { + for (var i = 0, y = 0; i < n; ++i) y += series[i][j][1] || 0; + s0[j][1] += s0[j][0] = -y / 2; } + none$1(series, order); +} - if (!rArc) { // && lArc - newArc.edge = createEdge(lArc.site, newArc.site); - return; +function wiggle(series, order) { + if (!((n = series.length) > 0) || !((m = (s0 = series[order[0]]).length) > 0)) return; + for (var y = 0, j = 1, s0, m, n; j < m; ++j) { + for (var i = 0, s1 = 0, s2 = 0; i < n; ++i) { + var si = series[order[i]], + sij0 = si[j][1] || 0, + sij1 = si[j - 1][1] || 0, + s3 = (sij0 - sij1) / 2; + for (var k = 0; k < i; ++k) { + var sk = series[order[k]], + skj0 = sk[j][1] || 0, + skj1 = sk[j - 1][1] || 0; + s3 += skj0 - skj1; + } + s1 += sij0, s2 += s3 * sij0; + } + s0[j - 1][1] += s0[j - 1][0] = y; + if (s1) y -= s2 / s1; } - - // else lArc !== rArc - detachCircle(lArc); - detachCircle(rArc); - - var lSite = lArc.site, - ax = lSite[0], - ay = lSite[1], - bx = site[0] - ax, - by = site[1] - ay, - rSite = rArc.site, - cx = rSite[0] - ax, - cy = rSite[1] - ay, - d = 2 * (bx * cy - by * cx), - hb = bx * bx + by * by, - hc = cx * cx + cy * cy, - vertex = [(cy * hb - by * hc) / d + ax, (bx * hc - cx * hb) / d + ay]; - - setEdgeEnd(rArc.edge, lSite, rSite, vertex); - newArc.edge = createEdge(lSite, site, null, vertex); - rArc.edge = createEdge(site, rSite, null, vertex); - attachCircle(lArc); - attachCircle(rArc); + s0[j - 1][1] += s0[j - 1][0] = y; + none$1(series, order); } -function leftBreakPoint(arc, directrix) { - var site = arc.site, - rfocx = site[0], - rfocy = site[1], - pby2 = rfocy - directrix; - - if (!pby2) return rfocx; - - var lArc = arc.P; - if (!lArc) return -Infinity; - - site = lArc.site; - var lfocx = site[0], - lfocy = site[1], - plby2 = lfocy - directrix; - - if (!plby2) return lfocx; - - var hl = lfocx - rfocx, - aby2 = 1 / pby2 - 1 / plby2, - b = hl / plby2; - - if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx; - - return (rfocx + lfocx) / 2; +function appearance(series) { + var peaks = series.map(peak); + return none(series).sort(function(a, b) { return peaks[a] - peaks[b]; }); } -function rightBreakPoint(arc, directrix) { - var rArc = arc.N; - if (rArc) return leftBreakPoint(rArc, directrix); - var site = arc.site; - return site[1] === directrix ? site[0] : Infinity; +function peak(series) { + var i = -1, j = 0, n = series.length, vi, vj = -Infinity; + while (++i < n) if ((vi = +series[i][1]) > vj) vj = vi, j = i; + return j; } -var epsilon$4 = 1e-6; -var epsilon2$2 = 1e-12; -var beaches; -var cells; -var circles; -var edges; - -function triangleArea(a, b, c) { - return (a[0] - c[0]) * (b[1] - a[1]) - (a[0] - b[0]) * (c[1] - a[1]); +function ascending(series) { + var sums = series.map(sum); + return none(series).sort(function(a, b) { return sums[a] - sums[b]; }); } -function lexicographic(a, b) { - return b[1] - a[1] - || b[0] - a[0]; +function sum(series) { + var s = 0, i = -1, n = series.length, v; + while (++i < n) if (v = +series[i][1]) s += v; + return s; } -function Diagram(sites, extent) { - var site = sites.sort(lexicographic).pop(), - x, - y, - circle; +function descending(series) { + return ascending(series).reverse(); +} - edges = []; - cells = new Array(sites.length); - beaches = new RedBlackTree; - circles = new RedBlackTree; +function insideOut(series) { + var n = series.length, + i, + j, + sums = series.map(sum), + order = appearance(series), + top = 0, + bottom = 0, + tops = [], + bottoms = []; - while (true) { - circle = firstCircle; - if (site && (!circle || site[1] < circle.y || (site[1] === circle.y && site[0] < circle.x))) { - if (site[0] !== x || site[1] !== y) { - addBeach(site); - x = site[0], y = site[1]; - } - site = sites.pop(); - } else if (circle) { - removeBeach(circle.arc); + for (i = 0; i < n; ++i) { + j = order[i]; + if (top < bottom) { + top += sums[j]; + tops.push(j); } else { - break; + bottom += sums[j]; + bottoms.push(j); } } - sortCellHalfedges(); - - if (extent) { - var x0 = +extent[0][0], - y0 = +extent[0][1], - x1 = +extent[1][0], - y1 = +extent[1][1]; - clipEdges(x0, y0, x1, y1); - clipCells(x0, y0, x1, y1); - } - - this.edges = edges; - this.cells = cells; - - beaches = - circles = - edges = - cells = null; -} - -Diagram.prototype = { - constructor: Diagram, - - polygons: function() { - var edges = this.edges; - - return this.cells.map(function(cell) { - var polygon = cell.halfedges.map(function(i) { return cellHalfedgeStart(cell, edges[i]); }); - polygon.data = cell.site.data; - return polygon; - }); - }, - - triangles: function() { - var triangles = [], - edges = this.edges; - - this.cells.forEach(function(cell, i) { - if (!(m = (halfedges = cell.halfedges).length)) return; - var site = cell.site, - halfedges, - j = -1, - m, - s0, - e1 = edges[halfedges[m - 1]], - s1 = e1.left === site ? e1.right : e1.left; - - while (++j < m) { - s0 = s1; - e1 = edges[halfedges[j]]; - s1 = e1.left === site ? e1.right : e1.left; - if (s0 && s1 && i < s0.index && i < s1.index && triangleArea(site, s0, s1) < 0) { - triangles.push([site.data, s0.data, s1.data]); - } - } - }); - - return triangles; - }, - - links: function() { - return this.edges.filter(function(edge) { - return edge.right; - }).map(function(edge) { - return { - source: edge.left.data, - target: edge.right.data - }; - }); - }, - - find: function(x, y, radius) { - var that = this, i0, i1 = that._found || 0, n = that.cells.length, cell; - - // Use the previously-found cell, or start with an arbitrary one. - while (!(cell = that.cells[i1])) if (++i1 >= n) return null; - var dx = x - cell.site[0], dy = y - cell.site[1], d2 = dx * dx + dy * dy; - - // Traverse the half-edges to find a closer cell, if any. - do { - cell = that.cells[i0 = i1], i1 = null; - cell.halfedges.forEach(function(e) { - var edge = that.edges[e], v = edge.left; - if ((v === cell.site || !v) && !(v = edge.right)) return; - var vx = x - v[0], vy = y - v[1], v2 = vx * vx + vy * vy; - if (v2 < d2) d2 = v2, i1 = v.index; - }); - } while (i1 !== null); - - that._found = i0; - - return radius == null || d2 <= radius * radius ? cell.site : null; - } -}; - -function voronoi() { - var x = x$4, - y = y$4, - extent = null; - - function voronoi(data) { - return new Diagram(data.map(function(d, i) { - var s = [Math.round(x(d, i, data) / epsilon$4) * epsilon$4, Math.round(y(d, i, data) / epsilon$4) * epsilon$4]; - s.index = i; - s.data = d; - return s; - }), extent); - } - - voronoi.polygons = function(data) { - return voronoi(data).polygons(); - }; - - voronoi.links = function(data) { - return voronoi(data).links(); - }; - - voronoi.triangles = function(data) { - return voronoi(data).triangles(); - }; - - voronoi.x = function(_) { - return arguments.length ? (x = typeof _ === "function" ? _ : constant$c(+_), voronoi) : x; - }; - - voronoi.y = function(_) { - return arguments.length ? (y = typeof _ === "function" ? _ : constant$c(+_), voronoi) : y; - }; - - voronoi.extent = function(_) { - return arguments.length ? (extent = _ == null ? null : [[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]], voronoi) : extent && [[extent[0][0], extent[0][1]], [extent[1][0], extent[1][1]]]; - }; - - voronoi.size = function(_) { - return arguments.length ? (extent = _ == null ? null : [[0, 0], [+_[0], +_[1]]], voronoi) : extent && [extent[1][0] - extent[0][0], extent[1][1] - extent[0][1]]; - }; - - return voronoi; -} - -function constant$d(x) { - return function() { - return x; - }; + return bottoms.reverse().concat(tops); } -function ZoomEvent(target, type, transform) { - this.target = target; - this.type = type; - this.transform = transform; +function reverse(series) { + return none(series).reverse(); +} + +var constant = x => () => x; + +function ZoomEvent(type, { + sourceEvent, + target, + transform, + dispatch +}) { + Object.defineProperties(this, { + type: {value: type, enumerable: true, configurable: true}, + sourceEvent: {value: sourceEvent, enumerable: true, configurable: true}, + target: {value: target, enumerable: true, configurable: true}, + transform: {value: transform, enumerable: true, configurable: true}, + _: {value: dispatch} + }); } function Transform(k, x, y) { @@ -17641,30 +18716,31 @@ Transform.prototype = { } }; -var identity$9 = new Transform(1, 0, 0); +var identity = new Transform(1, 0, 0); -transform$1.prototype = Transform.prototype; +transform.prototype = Transform.prototype; -function transform$1(node) { - while (!node.__zoom) if (!(node = node.parentNode)) return identity$9; +function transform(node) { + while (!node.__zoom) if (!(node = node.parentNode)) return identity; return node.__zoom; } -function nopropagation$2() { - exports.event.stopImmediatePropagation(); +function nopropagation(event) { + event.stopImmediatePropagation(); } -function noevent$2() { - exports.event.preventDefault(); - exports.event.stopImmediatePropagation(); +function noevent(event) { + event.preventDefault(); + event.stopImmediatePropagation(); } // Ignore right-click, since that should open the context menu. -function defaultFilter$2() { - return !exports.event.ctrlKey && !exports.event.button; +// except for pinch-to-zoom, which is sent as a wheel+ctrlKey event +function defaultFilter(event) { + return (!event.ctrlKey || event.type === 'wheel') && !event.button; } -function defaultExtent$1() { +function defaultExtent() { var e = this; if (e instanceof SVGElement) { e = e.ownerSVGElement || e; @@ -17678,14 +18754,14 @@ function defaultExtent$1() { } function defaultTransform() { - return this.__zoom || identity$9; + return this.__zoom || identity; } -function defaultWheelDelta() { - return -exports.event.deltaY * (exports.event.deltaMode === 1 ? 0.05 : exports.event.deltaMode ? 1 : 0.002); +function defaultWheelDelta(event) { + return -event.deltaY * (event.deltaMode === 1 ? 0.05 : event.deltaMode ? 1 : 0.002) * (event.ctrlKey ? 10 : 1); } -function defaultTouchable$2() { +function defaultTouchable() { return navigator.maxTouchPoints || ("ontouchstart" in this); } @@ -17701,21 +18777,23 @@ function defaultConstrain(transform, extent, translateExtent) { } function zoom() { - var filter = defaultFilter$2, - extent = defaultExtent$1, + var filter = defaultFilter, + extent = defaultExtent, constrain = defaultConstrain, wheelDelta = defaultWheelDelta, - touchable = defaultTouchable$2, + touchable = defaultTouchable, scaleExtent = [0, Infinity], translateExtent = [[-Infinity, -Infinity], [Infinity, Infinity]], duration = 250, interpolate = interpolateZoom, listeners = dispatch("start", "zoom", "end"), touchstarting, + touchfirst, touchending, touchDelay = 500, wheelDelay = 150, - clickDistance2 = 0; + clickDistance2 = 0, + tapDistance = 10; function zoom(selection) { selection @@ -17727,34 +18805,34 @@ function zoom() { .on("touchstart.zoom", touchstarted) .on("touchmove.zoom", touchmoved) .on("touchend.zoom touchcancel.zoom", touchended) - .style("touch-action", "none") .style("-webkit-tap-highlight-color", "rgba(0,0,0,0)"); } - zoom.transform = function(collection, transform, point) { + zoom.transform = function(collection, transform, point, event) { var selection = collection.selection ? collection.selection() : collection; selection.property("__zoom", defaultTransform); if (collection !== selection) { - schedule(collection, transform, point); + schedule(collection, transform, point, event); } else { selection.interrupt().each(function() { gesture(this, arguments) - .start() - .zoom(null, typeof transform === "function" ? transform.apply(this, arguments) : transform) - .end(); + .event(event) + .start() + .zoom(null, typeof transform === "function" ? transform.apply(this, arguments) : transform) + .end(); }); } }; - zoom.scaleBy = function(selection, k, p) { + zoom.scaleBy = function(selection, k, p, event) { zoom.scaleTo(selection, function() { var k0 = this.__zoom.k, k1 = typeof k === "function" ? k.apply(this, arguments) : k; return k0 * k1; - }, p); + }, p, event); }; - zoom.scaleTo = function(selection, k, p) { + zoom.scaleTo = function(selection, k, p, event) { zoom.transform(selection, function() { var e = extent.apply(this, arguments), t0 = this.__zoom, @@ -17762,28 +18840,28 @@ function zoom() { p1 = t0.invert(p0), k1 = typeof k === "function" ? k.apply(this, arguments) : k; return constrain(translate(scale(t0, k1), p0, p1), e, translateExtent); - }, p); + }, p, event); }; - zoom.translateBy = function(selection, x, y) { + zoom.translateBy = function(selection, x, y, event) { zoom.transform(selection, function() { return constrain(this.__zoom.translate( typeof x === "function" ? x.apply(this, arguments) : x, typeof y === "function" ? y.apply(this, arguments) : y ), extent.apply(this, arguments), translateExtent); - }); + }, null, event); }; - zoom.translateTo = function(selection, x, y, p) { + zoom.translateTo = function(selection, x, y, p, event) { zoom.transform(selection, function() { var e = extent.apply(this, arguments), t = this.__zoom, p0 = p == null ? centroid(e) : typeof p === "function" ? p.apply(this, arguments) : p; - return constrain(identity$9.translate(p0[0], p0[1]).scale(t.k).translate( + return constrain(identity.translate(p0[0], p0[1]).scale(t.k).translate( typeof x === "function" ? -x.apply(this, arguments) : -x, typeof y === "function" ? -y.apply(this, arguments) : -y ), e, translateExtent); - }, p); + }, p, event); }; function scale(transform, k) { @@ -17800,14 +18878,14 @@ function zoom() { return [(+extent[0][0] + +extent[1][0]) / 2, (+extent[0][1] + +extent[1][1]) / 2]; } - function schedule(transition, transform, point) { + function schedule(transition, transform, point, event) { transition - .on("start.zoom", function() { gesture(this, arguments).start(); }) - .on("interrupt.zoom end.zoom", function() { gesture(this, arguments).end(); }) + .on("start.zoom", function() { gesture(this, arguments).event(event).start(); }) + .on("interrupt.zoom end.zoom", function() { gesture(this, arguments).event(event).end(); }) .tween("zoom", function() { var that = this, args = arguments, - g = gesture(that, args), + g = gesture(that, args).event(event), e = extent.apply(that, args), p = point == null ? centroid(e) : typeof point === "function" ? point.apply(that, args) : point, w = Math.max(e[1][0] - e[0][0], e[1][1] - e[0][1]), @@ -17830,11 +18908,16 @@ function zoom() { this.that = that; this.args = args; this.active = 0; + this.sourceEvent = null; this.extent = extent.apply(that, args); this.taps = 0; } Gesture.prototype = { + event: function(event) { + if (event) this.sourceEvent = event; + return this; + }, start: function() { if (++this.active === 1) { this.that.__zooming = this; @@ -17858,16 +18941,28 @@ function zoom() { return this; }, emit: function(type) { - customEvent(new ZoomEvent(zoom, type, this.that.__zoom), listeners.apply, listeners, [type, this.that, this.args]); + var d = select(this.that).datum(); + listeners.call( + type, + this.that, + new ZoomEvent(type, { + sourceEvent: this.sourceEvent, + target: zoom, + type, + transform: this.that.__zoom, + dispatch: listeners + }), + d + ); } }; - function wheeled() { + function wheeled(event, ...args) { if (!filter.apply(this, arguments)) return; - var g = gesture(this, arguments), + var g = gesture(this, args).event(event), t = this.__zoom, k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], t.k * Math.pow(2, wheelDelta.apply(this, arguments)))), - p = mouse(this); + p = pointer(event); // If the mouse is in the same location as before, reuse it. // If there were recent wheel events, reset the wheel idle timeout. @@ -17888,7 +18983,7 @@ function zoom() { g.start(); } - noevent$2(); + noevent(event); g.wheel = setTimeout(wheelidled, wheelDelay); g.zoom("mouse", constrain(translate(scale(t, k), g.mouse[0], g.mouse[1]), g.extent, translateExtent)); @@ -17898,60 +18993,62 @@ function zoom() { } } - function mousedowned() { + function mousedowned(event, ...args) { if (touchending || !filter.apply(this, arguments)) return; - var g = gesture(this, arguments, true), - v = select(exports.event.view).on("mousemove.zoom", mousemoved, true).on("mouseup.zoom", mouseupped, true), - p = mouse(this), - x0 = exports.event.clientX, - y0 = exports.event.clientY; - - dragDisable(exports.event.view); - nopropagation$2(); + var g = gesture(this, args, true).event(event), + v = select(event.view).on("mousemove.zoom", mousemoved, true).on("mouseup.zoom", mouseupped, true), + p = pointer(event, currentTarget), + currentTarget = event.currentTarget, + x0 = event.clientX, + y0 = event.clientY; + + dragDisable(event.view); + nopropagation(event); g.mouse = [p, this.__zoom.invert(p)]; interrupt(this); g.start(); - function mousemoved() { - noevent$2(); + function mousemoved(event) { + noevent(event); if (!g.moved) { - var dx = exports.event.clientX - x0, dy = exports.event.clientY - y0; + var dx = event.clientX - x0, dy = event.clientY - y0; g.moved = dx * dx + dy * dy > clickDistance2; } - g.zoom("mouse", constrain(translate(g.that.__zoom, g.mouse[0] = mouse(g.that), g.mouse[1]), g.extent, translateExtent)); + g.event(event) + .zoom("mouse", constrain(translate(g.that.__zoom, g.mouse[0] = pointer(event, currentTarget), g.mouse[1]), g.extent, translateExtent)); } - function mouseupped() { + function mouseupped(event) { v.on("mousemove.zoom mouseup.zoom", null); - yesdrag(exports.event.view, g.moved); - noevent$2(); - g.end(); + yesdrag(event.view, g.moved); + noevent(event); + g.event(event).end(); } } - function dblclicked() { + function dblclicked(event, ...args) { if (!filter.apply(this, arguments)) return; var t0 = this.__zoom, - p0 = mouse(this), + p0 = pointer(event.changedTouches ? event.changedTouches[0] : event, this), p1 = t0.invert(p0), - k1 = t0.k * (exports.event.shiftKey ? 0.5 : 2), - t1 = constrain(translate(scale(t0, k1), p0, p1), extent.apply(this, arguments), translateExtent); + k1 = t0.k * (event.shiftKey ? 0.5 : 2), + t1 = constrain(translate(scale(t0, k1), p0, p1), extent.apply(this, args), translateExtent); - noevent$2(); - if (duration > 0) select(this).transition().duration(duration).call(schedule, t1, p0); - else select(this).call(zoom.transform, t1); + noevent(event); + if (duration > 0) select(this).transition().duration(duration).call(schedule, t1, p0, event); + else select(this).call(zoom.transform, t1, p0, event); } - function touchstarted() { + function touchstarted(event, ...args) { if (!filter.apply(this, arguments)) return; - var touches = exports.event.touches, + var touches = event.touches, n = touches.length, - g = gesture(this, arguments, exports.event.changedTouches.length === n), + g = gesture(this, args, event.changedTouches.length === n).event(event), started, i, t, p; - nopropagation$2(); + nopropagation(event); for (i = 0; i < n; ++i) { - t = touches[i], p = touch(this, touches, t.identifier); + t = touches[i], p = pointer(t, this); p = [p, this.__zoom.invert(p), t.identifier]; if (!g.touch0) g.touch0 = p, started = true, g.taps = 1 + !!touchstarting; else if (!g.touch1 && g.touch0[2] !== p[2]) g.touch1 = p, g.taps = 0; @@ -17960,23 +19057,21 @@ function zoom() { if (touchstarting) touchstarting = clearTimeout(touchstarting); if (started) { - if (g.taps < 2) touchstarting = setTimeout(function() { touchstarting = null; }, touchDelay); + if (g.taps < 2) touchfirst = p[0], touchstarting = setTimeout(function() { touchstarting = null; }, touchDelay); interrupt(this); g.start(); } } - function touchmoved() { + function touchmoved(event, ...args) { if (!this.__zooming) return; - var g = gesture(this, arguments), - touches = exports.event.changedTouches, + var g = gesture(this, args).event(event), + touches = event.changedTouches, n = touches.length, i, t, p, l; - noevent$2(); - if (touchstarting) touchstarting = clearTimeout(touchstarting); - g.taps = 0; + noevent(event); for (i = 0; i < n; ++i) { - t = touches[i], p = touch(this, touches, t.identifier); + t = touches[i], p = pointer(t, this); if (g.touch0 && g.touch0[2] === t.identifier) g.touch0[0] = p; else if (g.touch1 && g.touch1[2] === t.identifier) g.touch1[0] = p; } @@ -17992,16 +19087,17 @@ function zoom() { } else if (g.touch0) p = g.touch0[0], l = g.touch0[1]; else return; + g.zoom("touch", constrain(translate(t, p, l), g.extent, translateExtent)); } - function touchended() { + function touchended(event, ...args) { if (!this.__zooming) return; - var g = gesture(this, arguments), - touches = exports.event.changedTouches, + var g = gesture(this, args).event(event), + touches = event.changedTouches, n = touches.length, i, t; - nopropagation$2(); + nopropagation(event); if (touchending) clearTimeout(touchending); touchending = setTimeout(function() { touchending = null; }, touchDelay); for (i = 0; i < n; ++i) { @@ -18015,26 +19111,29 @@ function zoom() { g.end(); // If this was a dbltap, reroute to the (optional) dblclick.zoom handler. if (g.taps === 2) { - var p = select(this).on("dblclick.zoom"); - if (p) p.apply(this, arguments); + t = pointer(t, this); + if (Math.hypot(touchfirst[0] - t[0], touchfirst[1] - t[1]) < tapDistance) { + var p = select(this).on("dblclick.zoom"); + if (p) p.apply(this, arguments); + } } } } zoom.wheelDelta = function(_) { - return arguments.length ? (wheelDelta = typeof _ === "function" ? _ : constant$d(+_), zoom) : wheelDelta; + return arguments.length ? (wheelDelta = typeof _ === "function" ? _ : constant(+_), zoom) : wheelDelta; }; zoom.filter = function(_) { - return arguments.length ? (filter = typeof _ === "function" ? _ : constant$d(!!_), zoom) : filter; + return arguments.length ? (filter = typeof _ === "function" ? _ : constant(!!_), zoom) : filter; }; zoom.touchable = function(_) { - return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$d(!!_), zoom) : touchable; + return arguments.length ? (touchable = typeof _ === "function" ? _ : constant(!!_), zoom) : touchable; }; zoom.extent = function(_) { - return arguments.length ? (extent = typeof _ === "function" ? _ : constant$d([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), zoom) : extent; + return arguments.length ? (extent = typeof _ === "function" ? _ : constant([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), zoom) : extent; }; zoom.scaleExtent = function(_) { @@ -18066,21 +19165,32 @@ function zoom() { return arguments.length ? (clickDistance2 = (_ = +_) * _, zoom) : Math.sqrt(clickDistance2); }; + zoom.tapDistance = function(_) { + return arguments.length ? (tapDistance = +_, zoom) : tapDistance; + }; + return zoom; } +exports.Adder = Adder; +exports.Delaunay = Delaunay; exports.FormatSpecifier = FormatSpecifier; +exports.InternMap = InternMap; +exports.InternSet = InternSet; +exports.Voronoi = Voronoi; exports.active = active; exports.arc = arc; -exports.area = area$3; +exports.area = area; exports.areaRadial = areaRadial; -exports.ascending = ascending; +exports.ascending = ascending$3; exports.autoType = autoType; exports.axisBottom = axisBottom; exports.axisLeft = axisLeft; exports.axisRight = axisRight; exports.axisTop = axisTop; +exports.bin = bin; exports.bisect = bisectRight; +exports.bisectCenter = bisectCenter; exports.bisectLeft = bisectLeft; exports.bisectRight = bisectRight; exports.bisector = bisector; @@ -18091,15 +19201,17 @@ exports.brushX = brushX; exports.brushY = brushY; exports.buffer = buffer; exports.chord = chord; -exports.clientPoint = point; +exports.chordDirected = chordDirected; +exports.chordTranspose = chordTranspose; exports.cluster = cluster; exports.color = color; exports.contourDensity = density; exports.contours = contours; -exports.create = create; +exports.count = count$1; +exports.create = create$1; exports.creator = creator; -exports.cross = cross; -exports.csv = csv$1; +exports.cross = cross$2; +exports.csv = csv; exports.csvFormat = csvFormat; exports.csvFormatBody = csvFormatBody; exports.csvFormatRow = csvFormatRow; @@ -18107,10 +19219,13 @@ exports.csvFormatRows = csvFormatRows; exports.csvFormatValue = csvFormatValue; exports.csvParse = csvParse; exports.csvParseRows = csvParseRows; -exports.cubehelix = cubehelix; -exports.curveBasis = basis$2; -exports.curveBasisClosed = basisClosed$1; +exports.cubehelix = cubehelix$3; +exports.cumsum = cumsum; +exports.curveBasis = basis; +exports.curveBasisClosed = basisClosed; exports.curveBasisOpen = basisOpen; +exports.curveBumpX = bumpX; +exports.curveBumpY = bumpY; exports.curveBundle = bundle; exports.curveCardinal = cardinal; exports.curveCardinalClosed = cardinalClosed; @@ -18126,9 +19241,10 @@ exports.curveNatural = natural; exports.curveStep = step; exports.curveStepAfter = stepAfter; exports.curveStepBefore = stepBefore; -exports.customEvent = customEvent; -exports.descending = descending; +exports.descending = descending$2; exports.deviation = deviation; +exports.difference = difference; +exports.disjoint = disjoint; exports.dispatch = dispatch; exports.drag = drag; exports.dragDisable = dragDisable; @@ -18172,32 +19288,35 @@ exports.easeSin = sinInOut; exports.easeSinIn = sinIn; exports.easeSinInOut = sinInOut; exports.easeSinOut = sinOut; -exports.entries = entries; -exports.extent = extent; -exports.forceCenter = center$1; +exports.every = every; +exports.extent = extent$1; +exports.fcumsum = fcumsum; +exports.filter = filter$1; +exports.forceCenter = center; exports.forceCollide = collide; -exports.forceLink = link; +exports.forceLink = link$2; exports.forceManyBody = manyBody; -exports.forceRadial = radial; +exports.forceRadial = radial$1; exports.forceSimulation = simulation; -exports.forceX = x$2; -exports.forceY = y$2; -exports.formatDefaultLocale = defaultLocale; -exports.formatLocale = formatLocale; +exports.forceX = x$1; +exports.forceY = y$1; +exports.formatDefaultLocale = defaultLocale$1; +exports.formatLocale = formatLocale$1; exports.formatSpecifier = formatSpecifier; +exports.fsum = fsum; exports.geoAlbers = albers; exports.geoAlbersUsa = albersUsa; -exports.geoArea = area$1; +exports.geoArea = area$2; exports.geoAzimuthalEqualArea = azimuthalEqualArea; exports.geoAzimuthalEqualAreaRaw = azimuthalEqualAreaRaw; exports.geoAzimuthalEquidistant = azimuthalEquidistant; exports.geoAzimuthalEquidistantRaw = azimuthalEquidistantRaw; exports.geoBounds = bounds; -exports.geoCentroid = centroid; -exports.geoCircle = circle; +exports.geoCentroid = centroid$1; +exports.geoCircle = circle$2; exports.geoClipAntimeridian = clipAntimeridian; exports.geoClipCircle = clipCircle; -exports.geoClipExtent = extent$1; +exports.geoClipExtent = extent; exports.geoClipRectangle = clipRectangle; exports.geoConicConformal = conicConformal; exports.geoConicConformalRaw = conicConformalRaw; @@ -18215,8 +19334,8 @@ exports.geoGnomonic = gnomonic; exports.geoGnomonicRaw = gnomonicRaw; exports.geoGraticule = graticule; exports.geoGraticule10 = graticule10; -exports.geoIdentity = identity$5; -exports.geoInterpolate = interpolate$1; +exports.geoIdentity = identity$4; +exports.geoInterpolate = interpolate; exports.geoLength = length$1; exports.geoMercator = mercator; exports.geoMercatorRaw = mercatorRaw; @@ -18224,27 +19343,34 @@ exports.geoNaturalEarth1 = naturalEarth1; exports.geoNaturalEarth1Raw = naturalEarth1Raw; exports.geoOrthographic = orthographic; exports.geoOrthographicRaw = orthographicRaw; -exports.geoPath = index$1; +exports.geoPath = index$2; exports.geoProjection = projection; exports.geoProjectionMutator = projectionMutator; exports.geoRotation = rotation; exports.geoStereographic = stereographic; exports.geoStereographicRaw = stereographicRaw; exports.geoStream = geoStream; -exports.geoTransform = transform; +exports.geoTransform = transform$1; exports.geoTransverseMercator = transverseMercator; exports.geoTransverseMercatorRaw = transverseMercatorRaw; exports.gray = gray; -exports.hcl = hcl; +exports.greatest = greatest; +exports.greatestIndex = greatestIndex; +exports.group = group; +exports.groupSort = groupSort; +exports.groups = groups; +exports.hcl = hcl$2; exports.hierarchy = hierarchy; -exports.histogram = histogram; -exports.hsl = hsl; +exports.histogram = bin; +exports.hsl = hsl$2; exports.html = html; exports.image = image; -exports.interpolate = interpolateValue; -exports.interpolateArray = array$1; -exports.interpolateBasis = basis$1; -exports.interpolateBasisClosed = basisClosed; +exports.index = index$4; +exports.indexes = indexes; +exports.interpolate = interpolate$2; +exports.interpolateArray = array$3; +exports.interpolateBasis = basis$2; +exports.interpolateBasisClosed = basisClosed$1; exports.interpolateBlues = Blues; exports.interpolateBrBG = BrBG; exports.interpolateBuGn = BuGn; @@ -18252,24 +19378,24 @@ exports.interpolateBuPu = BuPu; exports.interpolateCividis = cividis; exports.interpolateCool = cool; exports.interpolateCubehelix = cubehelix$2; -exports.interpolateCubehelixDefault = cubehelix$3; +exports.interpolateCubehelixDefault = cubehelix; exports.interpolateCubehelixLong = cubehelixLong; -exports.interpolateDate = date; +exports.interpolateDate = date$1; exports.interpolateDiscrete = discrete; exports.interpolateGnBu = GnBu; exports.interpolateGreens = Greens; exports.interpolateGreys = Greys; -exports.interpolateHcl = hcl$2; +exports.interpolateHcl = hcl$1; exports.interpolateHclLong = hclLong; -exports.interpolateHsl = hsl$2; +exports.interpolateHsl = hsl$1; exports.interpolateHslLong = hslLong; -exports.interpolateHue = hue$1; +exports.interpolateHue = hue; exports.interpolateInferno = inferno; -exports.interpolateLab = lab$1; +exports.interpolateLab = lab; exports.interpolateMagma = magma; exports.interpolateNumber = interpolateNumber; exports.interpolateNumberArray = numberArray; -exports.interpolateObject = object; +exports.interpolateObject = object$1; exports.interpolateOrRd = OrRd; exports.interpolateOranges = Oranges; exports.interpolatePRGn = PRGn; @@ -18305,32 +19431,35 @@ exports.interpolateYlOrBr = YlOrBr; exports.interpolateYlOrRd = YlOrRd; exports.interpolateZoom = interpolateZoom; exports.interrupt = interrupt; -exports.interval = interval$1; +exports.intersection = intersection; +exports.interval = interval; exports.isoFormat = formatIso; exports.isoParse = parseIso; exports.json = json; -exports.keys = keys; -exports.lab = lab; +exports.lab = lab$1; exports.lch = lch; +exports.least = least; +exports.leastIndex = leastIndex; exports.line = line; exports.lineRadial = lineRadial$1; exports.linkHorizontal = linkHorizontal; exports.linkRadial = linkRadial; exports.linkVertical = linkVertical; -exports.local = local; +exports.local = local$1; exports.map = map$1; exports.matcher = matcher; -exports.max = max; +exports.max = max$3; +exports.maxIndex = maxIndex; exports.mean = mean; exports.median = median; exports.merge = merge; -exports.min = min; -exports.mouse = mouse; +exports.min = min$2; +exports.minIndex = minIndex; exports.namespace = namespace; exports.namespaces = namespaces; -exports.nest = nest; +exports.nice = nice$1; exports.now = now; -exports.pack = index$2; +exports.pack = index$1; exports.packEnclose = enclose; exports.packSiblings = siblings; exports.pairs = pairs; @@ -18340,43 +19469,65 @@ exports.permute = permute; exports.pie = pie; exports.piecewise = piecewise; exports.pointRadial = pointRadial; -exports.polygonArea = area$2; -exports.polygonCentroid = centroid$1; -exports.polygonContains = contains$2; +exports.pointer = pointer; +exports.pointers = pointers; +exports.polygonArea = area$1; +exports.polygonCentroid = centroid; +exports.polygonContains = contains; exports.polygonHull = hull; -exports.polygonLength = length$2; +exports.polygonLength = length; exports.precisionFixed = precisionFixed; exports.precisionPrefix = precisionPrefix; exports.precisionRound = precisionRound; exports.quadtree = quadtree; -exports.quantile = threshold; -exports.quantize = quantize; +exports.quantile = quantile$1; +exports.quantileSorted = quantileSorted; +exports.quantize = quantize$1; +exports.quickselect = quickselect; exports.radialArea = areaRadial; exports.radialLine = lineRadial$1; exports.randomBates = bates; -exports.randomExponential = exponential$1; +exports.randomBernoulli = bernoulli; +exports.randomBeta = beta; +exports.randomBinomial = binomial; +exports.randomCauchy = cauchy; +exports.randomExponential = exponential; +exports.randomGamma = gamma; +exports.randomGeometric = geometric; +exports.randomInt = int; exports.randomIrwinHall = irwinHall; +exports.randomLcg = lcg; exports.randomLogNormal = logNormal; +exports.randomLogistic = logistic; exports.randomNormal = normal; +exports.randomPareto = pareto; +exports.randomPoisson = poisson; exports.randomUniform = uniform; +exports.randomWeibull = weibull; exports.range = sequence; +exports.reduce = reduce; +exports.reverse = reverse$1; exports.rgb = rgb; -exports.ribbon = ribbon; +exports.ribbon = ribbon$1; +exports.ribbonArrow = ribbonArrow; +exports.rollup = rollup; +exports.rollups = rollups; exports.scaleBand = band; -exports.scaleDiverging = diverging; +exports.scaleDiverging = diverging$1; exports.scaleDivergingLog = divergingLog; exports.scaleDivergingPow = divergingPow; exports.scaleDivergingSqrt = divergingSqrt; exports.scaleDivergingSymlog = divergingSymlog; -exports.scaleIdentity = identity$7; +exports.scaleIdentity = identity$2; exports.scaleImplicit = implicit; -exports.scaleLinear = linear$2; -exports.scaleLog = log$1; +exports.scaleLinear = linear; +exports.scaleLog = log; exports.scaleOrdinal = ordinal; -exports.scalePoint = point$1; -exports.scalePow = pow$1; +exports.scalePoint = point$4; +exports.scalePow = pow; exports.scaleQuantile = quantile; -exports.scaleQuantize = quantize$1; +exports.scaleQuantize = quantize; +exports.scaleRadial = radial; exports.scaleSequential = sequential; exports.scaleSequentialLog = sequentialLog; exports.scaleSequentialPow = sequentialPow; @@ -18385,73 +19536,77 @@ exports.scaleSequentialSqrt = sequentialSqrt; exports.scaleSequentialSymlog = sequentialSymlog; exports.scaleSqrt = sqrt$1; exports.scaleSymlog = symlog; -exports.scaleThreshold = threshold$1; +exports.scaleThreshold = threshold; exports.scaleTime = time; exports.scaleUtc = utcTime; exports.scan = scan; exports.schemeAccent = Accent; -exports.schemeBlues = scheme$l; -exports.schemeBrBG = scheme; -exports.schemeBuGn = scheme$9; -exports.schemeBuPu = scheme$a; +exports.schemeBlues = scheme$5; +exports.schemeBrBG = scheme$q; +exports.schemeBuGn = scheme$h; +exports.schemeBuPu = scheme$g; exports.schemeCategory10 = category10; exports.schemeDark2 = Dark2; -exports.schemeGnBu = scheme$b; -exports.schemeGreens = scheme$m; -exports.schemeGreys = scheme$n; -exports.schemeOrRd = scheme$c; -exports.schemeOranges = scheme$q; -exports.schemePRGn = scheme$1; +exports.schemeGnBu = scheme$f; +exports.schemeGreens = scheme$4; +exports.schemeGreys = scheme$3; +exports.schemeOrRd = scheme$e; +exports.schemeOranges = scheme; +exports.schemePRGn = scheme$p; exports.schemePaired = Paired; exports.schemePastel1 = Pastel1; exports.schemePastel2 = Pastel2; -exports.schemePiYG = scheme$2; -exports.schemePuBu = scheme$e; +exports.schemePiYG = scheme$o; +exports.schemePuBu = scheme$c; exports.schemePuBuGn = scheme$d; -exports.schemePuOr = scheme$3; -exports.schemePuRd = scheme$f; -exports.schemePurples = scheme$o; -exports.schemeRdBu = scheme$4; -exports.schemeRdGy = scheme$5; -exports.schemeRdPu = scheme$g; -exports.schemeRdYlBu = scheme$6; -exports.schemeRdYlGn = scheme$7; -exports.schemeReds = scheme$p; +exports.schemePuOr = scheme$n; +exports.schemePuRd = scheme$b; +exports.schemePurples = scheme$2; +exports.schemeRdBu = scheme$m; +exports.schemeRdGy = scheme$l; +exports.schemeRdPu = scheme$a; +exports.schemeRdYlBu = scheme$k; +exports.schemeRdYlGn = scheme$j; +exports.schemeReds = scheme$1; exports.schemeSet1 = Set1; exports.schemeSet2 = Set2; exports.schemeSet3 = Set3; -exports.schemeSpectral = scheme$8; +exports.schemeSpectral = scheme$i; exports.schemeTableau10 = Tableau10; -exports.schemeYlGn = scheme$i; -exports.schemeYlGnBu = scheme$h; -exports.schemeYlOrBr = scheme$j; -exports.schemeYlOrRd = scheme$k; +exports.schemeYlGn = scheme$8; +exports.schemeYlGnBu = scheme$9; +exports.schemeYlOrBr = scheme$7; +exports.schemeYlOrRd = scheme$6; exports.select = select; exports.selectAll = selectAll; exports.selection = selection; exports.selector = selector; exports.selectorAll = selectorAll; -exports.set = set$2; -exports.shuffle = shuffle; +exports.shuffle = shuffle$1; +exports.shuffler = shuffler; +exports.some = some; +exports.sort = sort; exports.stack = stack; -exports.stackOffsetDiverging = diverging$1; +exports.stackOffsetDiverging = diverging; exports.stackOffsetExpand = expand; exports.stackOffsetNone = none$1; exports.stackOffsetSilhouette = silhouette; exports.stackOffsetWiggle = wiggle; exports.stackOrderAppearance = appearance; -exports.stackOrderAscending = ascending$3; -exports.stackOrderDescending = descending$2; +exports.stackOrderAscending = ascending; +exports.stackOrderDescending = descending; exports.stackOrderInsideOut = insideOut; -exports.stackOrderNone = none$2; +exports.stackOrderNone = none; exports.stackOrderReverse = reverse; exports.stratify = stratify; exports.style = styleValue; -exports.sum = sum; +exports.subset = subset; +exports.sum = sum$1; +exports.superset = superset; exports.svg = svg; exports.symbol = symbol; -exports.symbolCircle = circle$2; -exports.symbolCross = cross$2; +exports.symbolCircle = circle; +exports.symbolCross = cross; exports.symbolDiamond = diamond; exports.symbolSquare = square; exports.symbolStar = star; @@ -18468,8 +19623,8 @@ exports.tickStep = tickStep; exports.ticks = ticks; exports.timeDay = day; exports.timeDays = days; -exports.timeFormatDefaultLocale = defaultLocale$1; -exports.timeFormatLocale = formatLocale$1; +exports.timeFormatDefaultLocale = defaultLocale; +exports.timeFormatLocale = formatLocale; exports.timeFriday = friday; exports.timeFridays = fridays; exports.timeHour = hour; @@ -18499,22 +19654,20 @@ exports.timeWeek = sunday; exports.timeWeeks = sundays; exports.timeYear = year; exports.timeYears = years; -exports.timeout = timeout$1; +exports.timeout = timeout; exports.timer = timer; exports.timerFlush = timerFlush; -exports.touch = touch; -exports.touches = touches; exports.transition = transition; exports.transpose = transpose; exports.tree = tree; -exports.treemap = index$3; +exports.treemap = index; exports.treemapBinary = binary; exports.treemapDice = treemapDice; exports.treemapResquarify = resquarify; exports.treemapSlice = treemapSlice; exports.treemapSliceDice = sliceDice; exports.treemapSquarify = squarify; -exports.tsv = tsv$1; +exports.tsv = tsv; exports.tsvFormat = tsvFormat; exports.tsvFormatBody = tsvFormatBody; exports.tsvFormatRow = tsvFormatRow; @@ -18522,6 +19675,7 @@ exports.tsvFormatRows = tsvFormatRows; exports.tsvFormatValue = tsvFormatValue; exports.tsvParse = tsvParse; exports.tsvParseRows = tsvParseRows; +exports.union = union; exports.utcDay = utcDay; exports.utcDays = utcDays; exports.utcFriday = utcFriday; @@ -18552,17 +19706,15 @@ exports.utcWeek = utcSunday; exports.utcWeeks = utcSundays; exports.utcYear = utcYear; exports.utcYears = utcYears; -exports.values = values; exports.variance = variance; exports.version = version; -exports.voronoi = voronoi; exports.window = defaultView; exports.xml = xml; exports.zip = zip; 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2:this._point=3,this._context.lineTo((5*this._x0+this._x1)/6,(5*this._y0+this._y1)/6);default:lm(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}},dm.prototype={areaStart:sm,areaEnd:sm,lineStart:function(){this._x0=this._x1=this._x2=this._x3=this._x4=this._y0=this._y1=this._y2=this._y3=this._y4=NaN,this._point=0},lineEnd:function(){switch(this._point){case 1:this._context.moveTo(this._x2,this._y2),this._context.closePath();break;case 2:this._context.moveTo((this._x2+2*this._x3)/3,(this._y2+2*this._y3)/3),this._context.lineTo((this._x3+2*this._x2)/3,(this._y3+2*this._y2)/3),this._context.closePath();break;case 3:this.point(this._x2,this._y2),this.point(this._x3,this._y3),this.point(this._x4,this._y4)}},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._x2=t,this._y2=n;break;case 1:this._point=2,this._x3=t,this._y3=n;break;case 2:this._point=3,this._x4=t,this._y4=n,this._context.moveTo((this._x0+4*this._x1+t)/6,(this._y0+4*this._y1+n)/6);break;default:lm(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}},pm.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._y0=this._y1=NaN,this._point=0},lineEnd:function(){(this._line||0!==this._line&&3===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1;break;case 1:this._point=2;break;case 2:this._point=3;var e=(this._x0+4*this._x1+t)/6,r=(this._y0+4*this._y1+n)/6;this._line?this._context.lineTo(e,r):this._context.moveTo(e,r);break;case 3:this._point=4;default:lm(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}};class gm{constructor(t,n){this._context=t,this._x=n}areaStart(){this._line=0}areaEnd(){this._line=NaN}lineStart(){this._point=0}lineEnd(){(this._line||0!==this._line&&1===this._point)&&this._context.closePath(),this._line=1-this._line}point(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._line?this._context.lineTo(t,n):this._context.moveTo(t,n);break;case 1:this._point=2;default:this._x?this._context.bezierCurveTo(this._x0=(this._x0+t)/2,this._y0,this._x0,n,t,n):this._context.bezierCurveTo(this._x0,this._y0=(this._y0+n)/2,t,this._y0,t,n)}this._x0=t,this._y0=n}}function ym(t,n){this._basis=new hm(t),this._beta=n}ym.prototype={lineStart:function(){this._x=[],this._y=[],this._basis.lineStart()},lineEnd:function(){var t=this._x,n=this._y,e=t.length-1;if(e>0)for(var 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3:_m(this,this._x1,this._y1)}(this._line||0!==this._line&&1===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._line?this._context.lineTo(t,n):this._context.moveTo(t,n);break;case 1:this._point=2,this._x1=t,this._y1=n;break;case 2:this._point=3;default:_m(this,t,n)}this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var mm=function t(n){function e(t){return new bm(t,n)}return e.tension=function(n){return t(+n)},e}(0);function xm(t,n){this._context=t,this._k=(1-n)/6}xm.prototype={areaStart:sm,areaEnd:sm,lineStart:function(){this._x0=this._x1=this._x2=this._x3=this._x4=this._x5=this._y0=this._y1=this._y2=this._y3=this._y4=this._y5=NaN,this._point=0},lineEnd:function(){switch(this._point){case 1:this._context.moveTo(this._x3,this._y3),this._context.closePath();break;case 2:this._context.lineTo(this._x3,this._y3),this._context.closePath();break;case 3:this.point(this._x3,this._y3),this.point(this._x4,this._y4),this.point(this._x5,this._y5)}},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._x3=t,this._y3=n;break;case 1:this._point=2,this._context.moveTo(this._x4=t,this._y4=n);break;case 2:this._point=3,this._x5=t,this._y5=n;break;default:_m(this,t,n)}this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var wm=function t(n){function e(t){return new xm(t,n)}return e.tension=function(n){return t(+n)},e}(0);function Mm(t,n){this._context=t,this._k=(1-n)/6}Mm.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._x2=this._y0=this._y1=this._y2=NaN,this._point=0},lineEnd:function(){(this._line||0!==this._line&&3===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1;break;case 1:this._point=2;break;case 2:this._point=3,this._line?this._context.lineTo(this._x2,this._y2):this._context.moveTo(this._x2,this._y2);break;case 3:this._point=4;default:_m(this,t,n)}this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var Am=function t(n){function e(t){return new Mm(t,n)}return e.tension=function(n){return t(+n)},e}(0);function Tm(t,n,e){var r=t._x1,i=t._y1,o=t._x2,a=t._y2;if(t._l01_a>sb){var u=2*t._l01_2a+3*t._l01_a*t._l12_a+t._l12_2a,c=3*t._l01_a*(t._l01_a+t._l12_a);r=(r*u-t._x0*t._l12_2a+t._x2*t._l01_2a)/c,i=(i*u-t._y0*t._l12_2a+t._y2*t._l01_2a)/c}if(t._l23_a>sb){var f=2*t._l23_2a+3*t._l23_a*t._l12_a+t._l12_2a,s=3*t._l23_a*(t._l23_a+t._l12_a);o=(o*f+t._x1*t._l23_2a-n*t._l12_2a)/s,a=(a*f+t._y1*t._l23_2a-e*t._l12_2a)/s}t._context.bezierCurveTo(r,i,o,a,t._x2,t._y2)}function Sm(t,n){this._context=t,this._alpha=n}Sm.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._x2=this._y0=this._y1=this._y2=NaN,this._l01_a=this._l12_a=this._l23_a=this._l01_2a=this._l12_2a=this._l23_2a=this._point=0},lineEnd:function(){switch(this._point){case 2:this._context.lineTo(this._x2,this._y2);break;case 3:this.point(this._x2,this._y2)}(this._line||0!==this._line&&1===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){if(t=+t,n=+n,this._point){var e=this._x2-t,r=this._y2-n;this._l23_a=Math.sqrt(this._l23_2a=Math.pow(e*e+r*r,this._alpha))}switch(this._point){case 0:this._point=1,this._line?this._context.lineTo(t,n):this._context.moveTo(t,n);break;case 1:this._point=2;break;case 2:this._point=3;default:Tm(this,t,n)}this._l01_a=this._l12_a,this._l12_a=this._l23_a,this._l01_2a=this._l12_2a,this._l12_2a=this._l23_2a,this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var Em=function t(n){function e(t){return n?new Sm(t,n):new bm(t,0)}return e.alpha=function(n){return t(+n)},e}(.5);function km(t,n){this._context=t,this._alpha=n}km.prototype={areaStart:sm,areaEnd:sm,lineStart:function(){this._x0=this._x1=this._x2=this._x3=this._x4=this._x5=this._y0=this._y1=this._y2=this._y3=this._y4=this._y5=NaN,this._l01_a=this._l12_a=this._l23_a=this._l01_2a=this._l12_2a=this._l23_2a=this._point=0},lineEnd:function(){switch(this._point){case 1:this._context.moveTo(this._x3,this._y3),this._context.closePath();break;case 2:this._context.lineTo(this._x3,this._y3),this._context.closePath();break;case 3:this.point(this._x3,this._y3),this.point(this._x4,this._y4),this.point(this._x5,this._y5)}},point:function(t,n){if(t=+t,n=+n,this._point){var e=this._x2-t,r=this._y2-n;this._l23_a=Math.sqrt(this._l23_2a=Math.pow(e*e+r*r,this._alpha))}switch(this._point){case 0:this._point=1,this._x3=t,this._y3=n;break;case 1:this._point=2,this._context.moveTo(this._x4=t,this._y4=n);break;case 2:this._point=3,this._x5=t,this._y5=n;break;default:Tm(this,t,n)}this._l01_a=this._l12_a,this._l12_a=this._l23_a,this._l01_2a=this._l12_2a,this._l12_2a=this._l23_2a,this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var Nm=function t(n){function e(t){return n?new km(t,n):new xm(t,0)}return e.alpha=function(n){return t(+n)},e}(.5);function Cm(t,n){this._context=t,this._alpha=n}Cm.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._x2=this._y0=this._y1=this._y2=NaN,this._l01_a=this._l12_a=this._l23_a=this._l01_2a=this._l12_2a=this._l23_2a=this._point=0},lineEnd:function(){(this._line||0!==this._line&&3===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){if(t=+t,n=+n,this._point){var e=this._x2-t,r=this._y2-n;this._l23_a=Math.sqrt(this._l23_2a=Math.pow(e*e+r*r,this._alpha))}switch(this._point){case 0:this._point=1;break;case 1:this._point=2;break;case 2:this._point=3,this._line?this._context.lineTo(this._x2,this._y2):this._context.moveTo(this._x2,this._y2);break;case 3:this._point=4;default:Tm(this,t,n)}this._l01_a=this._l12_a,this._l12_a=this._l23_a,this._l01_2a=this._l12_2a,this._l12_2a=this._l23_2a,this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var Pm=function 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right}; } function ascendingComparator(f) { - return function(d, x) { - return ascending(f(d), x); - }; + return (d, x) => ascending$3(f(d), x); } -var ascendingBisect = bisector(ascending); -var bisectRight = ascendingBisect.right; -var bisectLeft = ascendingBisect.left; +function number$3(x) { + return x === null ? NaN : +x; +} -function pairs(array, f) { - if (f == null) f = pair; - var i = 0, n = array.length - 1, p = array[0], pairs = new Array(n < 0 ? 0 : n); - while (i < n) pairs[i] = f(p, p = array[++i]); - return pairs; +function* numbers(values, valueof) { + if (valueof === undefined) { + for (let value of values) { + if (value != null && (value = +value) >= value) { + yield value; + } + } + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null && (value = +value) >= value) { + yield value; + } + } + } } -function pair(a, b) { - return [a, b]; +const ascendingBisect = bisector(ascending$3); +const bisectRight = ascendingBisect.right; +const bisectLeft = ascendingBisect.left; +const bisectCenter = bisector(number$3).center; + +function count$1(values, valueof) { + let count = 0; + if (valueof === undefined) { + for (let value of values) { + if (value != null && (value = +value) >= value) { + ++count; + } + } + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null && (value = +value) >= value) { + ++count; + } + } + } + return count; } -function cross(values0, values1, reduce) { - var n0 = values0.length, - n1 = values1.length, - values = new Array(n0 * n1), - i0, - i1, - i, - value0; +function length$3(array) { + return array.length | 0; +} + +function empty$2(length) { + return !(length > 0); +} + +function arrayify(values) { + return typeof values !== "object" || "length" in values ? values : Array.from(values); +} - if (reduce == null) reduce = pair; +function reducer(reduce) { + return values => reduce(...values); +} - for (i0 = i = 0; i0 < n0; ++i0) { - for (value0 = values0[i0], i1 = 0; i1 < n1; ++i1, ++i) { - values[i] = reduce(value0, values1[i1]); +function cross$2(...values) { + const reduce = typeof values[values.length - 1] === "function" && reducer(values.pop()); + values = values.map(arrayify); + const lengths = values.map(length$3); + const j = values.length - 1; + const index = new Array(j + 1).fill(0); + const product = []; + if (j < 0 || lengths.some(empty$2)) return product; + while (true) { + product.push(index.map((j, i) => values[i][j])); + let i = j; + while (++index[i] === lengths[i]) { + if (i === 0) return reduce ? product.map(reduce) : product; + index[i--] = 0; } } - - return values; } -function descending(a, b) { - return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN; +function cumsum(values, valueof) { + var sum = 0, index = 0; + return Float64Array.from(values, valueof === undefined + ? v => (sum += +v || 0) + : v => (sum += +valueof(v, index++, values) || 0)); } -function number(x) { - return x === null ? NaN : +x; +function descending$2(a, b) { + return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN; } function variance(values, valueof) { - var n = values.length, - m = 0, - i = -1, - mean = 0, - value, - delta, - sum = 0; - - if (valueof == null) { - while (++i < n) { - if (!isNaN(value = number(values[i]))) { + let count = 0; + let delta; + let mean = 0; + let sum = 0; + if (valueof === undefined) { + for (let value of values) { + if (value != null && (value = +value) >= value) { delta = value - mean; - mean += delta / ++m; + mean += delta / ++count; sum += delta * (value - mean); } } - } - - else { - while (++i < n) { - if (!isNaN(value = number(valueof(values[i], i, values)))) { + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null && (value = +value) >= value) { delta = value - mean; - mean += delta / ++m; + mean += delta / ++count; sum += delta * (value - mean); } } } - - if (m > 1) return sum / (m - 1); + if (count > 1) return sum / (count - 1); } -function deviation(array, f) { - var v = variance(array, f); +function deviation(values, valueof) { + const v = variance(values, valueof); return v ? Math.sqrt(v) : v; } -function extent(values, valueof) { - var n = values.length, - i = -1, - value, - min, - max; - - if (valueof == null) { - while (++i < n) { // Find the first comparable value. - if ((value = values[i]) != null && value >= value) { - min = max = value; - while (++i < n) { // Compare the remaining values. - if ((value = values[i]) != null) { - if (min > value) min = value; - if (max < value) max = value; - } +function extent$1(values, valueof) { + let min; + let max; + if (valueof === undefined) { + for (const value of values) { + if (value != null) { + if (min === undefined) { + if (value >= value) min = max = value; + } else { + if (min > value) min = value; + if (max < value) max = value; + } + } + } + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null) { + if (min === undefined) { + if (value >= value) min = max = value; + } else { + if (min > value) min = value; + if (max < value) max = value; } } } } + return [min, max]; +} - else { - while (++i < n) { // Find the first comparable value. - if ((value = valueof(values[i], i, values)) != null && value >= value) { - min = max = value; - while (++i < n) { // Compare the remaining values. - if ((value = valueof(values[i], i, values)) != null) { - if (min > value) min = value; - if (max < value) max = value; - } - } +// https://github.com/python/cpython/blob/a74eea238f5baba15797e2e8b570d153bc8690a7/Modules/mathmodule.c#L1423 +class Adder { + constructor() { + this._partials = new Float64Array(32); + this._n = 0; + } + add(x) { + const p = this._partials; + let i = 0; + for (let j = 0; j < this._n && j < 32; j++) { + const y = p[j], + hi = x + y, + lo = Math.abs(x) < Math.abs(y) ? x - (hi - y) : y - (hi - x); + if (lo) p[i++] = lo; + x = hi; + } + p[i] = x; + this._n = i + 1; + return this; + } + valueOf() { + const p = this._partials; + let n = this._n, x, y, lo, hi = 0; + if (n > 0) { + hi = p[--n]; + while (n > 0) { + x = hi; + y = p[--n]; + hi = x + y; + lo = y - (hi - x); + if (lo) break; + } + if (n > 0 && ((lo < 0 && p[n - 1] < 0) || (lo > 0 && p[n - 1] > 0))) { + y = lo * 2; + x = hi + y; + if (y == x - hi) hi = x; } } + return hi; } +} - return [min, max]; +function fsum(values, valueof) { + const adder = new Adder(); + if (valueof === undefined) { + for (let value of values) { + if (value = +value) { + adder.add(value); + } + } + } else { + let index = -1; + for (let value of values) { + if (value = +valueof(value, ++index, values)) { + adder.add(value); + } + } + } + return +adder; } -var array = Array.prototype; +function fcumsum(values, valueof) { + const adder = new Adder(); + let index = -1; + return Float64Array.from(values, valueof === undefined + ? v => adder.add(+v || 0) + : v => adder.add(+valueof(v, ++index, values) || 0) + ); +} -var slice = array.slice; -var map = array.map; +class InternMap extends Map { + constructor(entries, key = keyof) { + super(); + Object.defineProperties(this, {_intern: {value: new Map()}, _key: {value: key}}); + if (entries != null) for (const [key, value] of entries) this.set(key, value); + } + get(key) { + return super.get(intern_get(this, key)); + } + has(key) { + return super.has(intern_get(this, key)); + } + set(key, value) { + return super.set(intern_set(this, key), value); + } + delete(key) { + return super.delete(intern_delete(this, key)); + } +} -function constant(x) { - return function() { - return x; - }; +class InternSet extends Set { + constructor(values, key = keyof) { + super(); + Object.defineProperties(this, {_intern: {value: new Map()}, _key: {value: key}}); + if (values != null) for (const value of values) this.add(value); + } + has(value) { + return super.has(intern_get(this, value)); + } + add(value) { + return super.add(intern_set(this, value)); + } + delete(value) { + return super.delete(intern_delete(this, value)); + } } -function identity(x) { +function intern_get({_intern, _key}, value) { + const key = _key(value); + return _intern.has(key) ? _intern.get(key) : value; +} + +function intern_set({_intern, _key}, value) { + const key = _key(value); + if (_intern.has(key)) return _intern.get(key); + _intern.set(key, value); + return value; +} + +function intern_delete({_intern, _key}, value) { + const key = _key(value); + if (_intern.has(key)) { + value = _intern.get(value); + _intern.delete(key); + } + return value; +} + +function keyof(value) { + return value !== null && typeof value === "object" ? value.valueOf() : value; +} + +function identity$9(x) { return x; } -function sequence(start, stop, step) { - start = +start, stop = +stop, step = (n = arguments.length) < 2 ? (stop = start, start = 0, 1) : n < 3 ? 1 : +step; +function group(values, ...keys) { + return nest(values, identity$9, identity$9, keys); +} - var i = -1, - n = Math.max(0, Math.ceil((stop - start) / step)) | 0, - range = new Array(n); +function groups(values, ...keys) { + return nest(values, Array.from, identity$9, keys); +} - while (++i < n) { - range[i] = start + i * step; +function rollup(values, reduce, ...keys) { + return nest(values, identity$9, reduce, keys); +} + +function rollups(values, reduce, ...keys) { + return nest(values, Array.from, reduce, keys); +} + +function index$4(values, ...keys) { + return nest(values, identity$9, unique, keys); +} + +function indexes(values, ...keys) { + return nest(values, Array.from, unique, keys); +} + +function unique(values) { + if (values.length !== 1) throw new Error("duplicate key"); + return values[0]; +} + +function nest(values, map, reduce, keys) { + return (function regroup(values, i) { + if (i >= keys.length) return reduce(values); + const groups = new InternMap(); + const keyof = keys[i++]; + let index = -1; + for (const value of values) { + const key = keyof(value, ++index, values); + const group = groups.get(key); + if (group) group.push(value); + else groups.set(key, [value]); + } + for (const [key, values] of groups) { + groups.set(key, regroup(values, i)); + } + return map(groups); + })(values, 0); +} + +function permute(source, keys) { + return Array.from(keys, key => source[key]); +} + +function sort(values, ...F) { + if (typeof values[Symbol.iterator] !== "function") throw new TypeError("values is not iterable"); + values = Array.from(values); + let [f = ascending$3] = F; + if (f.length === 1 || F.length > 1) { + const index = Uint32Array.from(values, (d, i) => i); + if (F.length > 1) { + F = F.map(f => values.map(f)); + index.sort((i, j) => { + for (const f of F) { + const c = ascending$3(f[i], f[j]); + if (c) return c; + } + }); + } else { + f = values.map(f); + index.sort((i, j) => ascending$3(f[i], f[j])); + } + return permute(values, index); } + return values.sort(f); +} - return range; +function groupSort(values, reduce, key) { + return (reduce.length === 1 + ? sort(rollup(values, reduce, key), (([ak, av], [bk, bv]) => ascending$3(av, bv) || ascending$3(ak, bk))) + : sort(group(values, key), (([ak, av], [bk, bv]) => reduce(av, bv) || ascending$3(ak, bk)))) + .map(([key]) => key); +} + +var array$5 = Array.prototype; + +var slice$4 = array$5.slice; + +function constant$b(x) { + return function() { + return x; + }; } var e10 = Math.sqrt(50), @@ -207,15 +452,18 @@ function ticks(start, stop, count) { if ((step = tickIncrement(start, stop, count)) === 0 || !isFinite(step)) return []; if (step > 0) { - start = Math.ceil(start / step); - stop = Math.floor(stop / step); - ticks = new Array(n = Math.ceil(stop - start + 1)); - while (++i < n) ticks[i] = (start + i) * step; + let r0 = Math.round(start / step), r1 = Math.round(stop / step); + if (r0 * step < start) ++r0; + if (r1 * step > stop) --r1; + ticks = new Array(n = r1 - r0 + 1); + while (++i < n) ticks[i] = (r0 + i) * step; } else { - start = Math.floor(start * step); - stop = Math.ceil(stop * step); - ticks = new Array(n = Math.ceil(start - stop + 1)); - while (++i < n) ticks[i] = (start - i) / step; + step = -step; + let r0 = Math.round(start * step), r1 = Math.round(stop * step); + if (r0 / step < start) ++r0; + if (r1 / step > stop) --r1; + ticks = new Array(n = r1 - r0 + 1); + while (++i < n) ticks[i] = (r0 + i) / step; } if (reverse) ticks.reverse(); @@ -242,16 +490,35 @@ function tickStep(start, stop, count) { return stop < start ? -step1 : step1; } +function nice$1(start, stop, count) { + let prestep; + while (true) { + const step = tickIncrement(start, stop, count); + if (step === prestep || step === 0 || !isFinite(step)) { + return [start, stop]; + } else if (step > 0) { + start = Math.floor(start / step) * step; + stop = Math.ceil(stop / step) * step; + } else if (step < 0) { + start = Math.ceil(start * step) / step; + stop = Math.floor(stop * step) / step; + } + prestep = step; + } +} + function thresholdSturges(values) { - return Math.ceil(Math.log(values.length) / Math.LN2) + 1; + return Math.ceil(Math.log(count$1(values)) / Math.LN2) + 1; } -function histogram() { - var value = identity, - domain = extent, +function bin() { + var value = identity$9, + domain = extent$1, threshold = thresholdSturges; function histogram(data) { + if (!Array.isArray(data)) data = Array.from(data); + var i, n = data.length, x, @@ -266,10 +533,34 @@ function histogram() { x1 = xz[1], tz = threshold(values, x0, x1); - // Convert number of thresholds into uniform thresholds. + // Convert number of thresholds into uniform thresholds, and nice the + // default domain accordingly. if (!Array.isArray(tz)) { - tz = tickStep(x0, x1, tz); - tz = sequence(Math.ceil(x0 / tz) * tz, x1, tz); // exclusive + const max = x1, tn = +tz; + if (domain === extent$1) [x0, x1] = nice$1(x0, x1, tn); + tz = ticks(x0, x1, tn); + + // If the last threshold is coincident with the domain’s upper bound, the + // last bin will be zero-width. If the default domain is used, and this + // last threshold is coincident with the maximum input value, we can + // extend the niced upper bound by one tick to ensure uniform bin widths; + // otherwise, we simply remove the last threshold. Note that we don’t + // coerce values or the domain to numbers, and thus must be careful to + // compare order (>=) rather than strict equality (===)! + if (tz[tz.length - 1] >= x1) { + if (max >= x1 && domain === extent$1) { + const step = tickIncrement(x0, x1, tn); + if (isFinite(step)) { + if (step > 0) { + x1 = (Math.floor(x1 / step) + 1) * step; + } else if (step < 0) { + x1 = (Math.ceil(x1 * -step) + 1) / -step; + } + } + } else { + tz.pop(); + } + } } // Remove any thresholds outside the domain. @@ -299,22 +590,119 @@ function histogram() { } histogram.value = function(_) { - return arguments.length ? (value = typeof _ === "function" ? _ : constant(_), histogram) : value; + return arguments.length ? (value = typeof _ === "function" ? _ : constant$b(_), histogram) : value; }; histogram.domain = function(_) { - return arguments.length ? (domain = typeof _ === "function" ? _ : constant([_[0], _[1]]), histogram) : domain; + return arguments.length ? (domain = typeof _ === "function" ? _ : constant$b([_[0], _[1]]), histogram) : domain; }; histogram.thresholds = function(_) { - return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant(slice.call(_)) : constant(_), histogram) : threshold; + return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant$b(slice$4.call(_)) : constant$b(_), histogram) : threshold; }; return histogram; } -function threshold(values, p, valueof) { - if (valueof == null) valueof = number; +function max$3(values, valueof) { + let max; + if (valueof === undefined) { + for (const value of values) { + if (value != null + && (max < value || (max === undefined && value >= value))) { + max = value; + } + } + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null + && (max < value || (max === undefined && value >= value))) { + max = value; + } + } + } + return max; +} + +function min$2(values, valueof) { + let min; + if (valueof === undefined) { + for (const value of values) { + if (value != null + && (min > value || (min === undefined && value >= value))) { + min = value; + } + } + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null + && (min > value || (min === undefined && value >= value))) { + min = value; + } + } + } + return min; +} + +// Based on https://github.com/mourner/quickselect +// ISC license, Copyright 2018 Vladimir Agafonkin. +function quickselect(array, k, left = 0, right = array.length - 1, compare = ascending$3) { + while (right > left) { + if (right - left > 600) { + const n = right - left + 1; + const m = k - left + 1; + const z = Math.log(n); + const s = 0.5 * Math.exp(2 * z / 3); + const sd = 0.5 * Math.sqrt(z * s * (n - s) / n) * (m - n / 2 < 0 ? -1 : 1); + const newLeft = Math.max(left, Math.floor(k - m * s / n + sd)); + const newRight = Math.min(right, Math.floor(k + (n - m) * s / n + sd)); + quickselect(array, k, newLeft, newRight, compare); + } + + const t = array[k]; + let i = left; + let j = right; + + swap$1(array, left, k); + if (compare(array[right], t) > 0) swap$1(array, left, right); + + while (i < j) { + swap$1(array, i, j), ++i, --j; + while (compare(array[i], t) < 0) ++i; + while (compare(array[j], t) > 0) --j; + } + + if (compare(array[left], t) === 0) swap$1(array, left, j); + else ++j, swap$1(array, j, right); + + if (j <= k) left = j + 1; + if (k <= j) right = j - 1; + } + return array; +} + +function swap$1(array, i, j) { + const t = array[i]; + array[i] = array[j]; + array[j] = t; +} + +function quantile$1(values, p, valueof) { + values = Float64Array.from(numbers(values, valueof)); + if (!(n = values.length)) return; + if ((p = +p) <= 0 || n < 2) return min$2(values); + if (p >= 1) return max$3(values); + var n, + i = (n - 1) * p, + i0 = Math.floor(i), + value0 = max$3(quickselect(values, i0).subarray(0, i0 + 1)), + value1 = min$2(values.subarray(i0 + 1)); + return value0 + (value1 - value0) * (i - i0); +} + +function quantileSorted(values, p, valueof = number$3) { if (!(n = values.length)) return; if ((p = +p) <= 0 || n < 2) return +valueof(values[0], 0, values); if (p >= 1) return +valueof(values[n - 1], n - 1, values); @@ -327,219 +715,254 @@ function threshold(values, p, valueof) { } function freedmanDiaconis(values, min, max) { - values = map.call(values, number).sort(ascending); - return Math.ceil((max - min) / (2 * (threshold(values, 0.75) - threshold(values, 0.25)) * Math.pow(values.length, -1 / 3))); + return Math.ceil((max - min) / (2 * (quantile$1(values, 0.75) - quantile$1(values, 0.25)) * Math.pow(count$1(values), -1 / 3))); } function scott(values, min, max) { - return Math.ceil((max - min) / (3.5 * deviation(values) * Math.pow(values.length, -1 / 3))); -} - -function max(values, valueof) { - var n = values.length, - i = -1, - value, - max; - - if (valueof == null) { - while (++i < n) { // Find the first comparable value. - if ((value = values[i]) != null && value >= value) { - max = value; - while (++i < n) { // Compare the remaining values. - if ((value = values[i]) != null && value > max) { - max = value; - } - } + return Math.ceil((max - min) / (3.5 * deviation(values) * Math.pow(count$1(values), -1 / 3))); +} + +function maxIndex(values, valueof) { + let max; + let maxIndex = -1; + let index = -1; + if (valueof === undefined) { + for (const value of values) { + ++index; + if (value != null + && (max < value || (max === undefined && value >= value))) { + max = value, maxIndex = index; } } - } - - else { - while (++i < n) { // Find the first comparable value. - if ((value = valueof(values[i], i, values)) != null && value >= value) { - max = value; - while (++i < n) { // Compare the remaining values. - if ((value = valueof(values[i], i, values)) != null && value > max) { - max = value; - } - } + } else { + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null + && (max < value || (max === undefined && value >= value))) { + max = value, maxIndex = index; } } } - - return max; + return maxIndex; } function mean(values, valueof) { - var n = values.length, - m = n, - i = -1, - value, - sum = 0; - - if (valueof == null) { - while (++i < n) { - if (!isNaN(value = number(values[i]))) sum += value; - else --m; + let count = 0; + let sum = 0; + if (valueof === undefined) { + for (let value of values) { + if (value != null && (value = +value) >= value) { + ++count, sum += value; + } } - } - - else { - while (++i < n) { - if (!isNaN(value = number(valueof(values[i], i, values)))) sum += value; - else --m; + } else { + let index = -1; + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null && (value = +value) >= value) { + ++count, sum += value; + } } } - - if (m) return sum / m; + if (count) return sum / count; } function median(values, valueof) { - var n = values.length, - i = -1, - value, - numbers = []; + return quantile$1(values, 0.5, valueof); +} - if (valueof == null) { - while (++i < n) { - if (!isNaN(value = number(values[i]))) { - numbers.push(value); - } - } +function* flatten(arrays) { + for (const array of arrays) { + yield* array; } +} - else { - while (++i < n) { - if (!isNaN(value = number(valueof(values[i], i, values)))) { - numbers.push(value); +function merge(arrays) { + return Array.from(flatten(arrays)); +} + +function minIndex(values, valueof) { + let min; + let minIndex = -1; + let index = -1; + if (valueof === undefined) { + for (const value of values) { + ++index; + if (value != null + && (min > value || (min === undefined && value >= value))) { + min = value, minIndex = index; + } + } + } else { + for (let value of values) { + if ((value = valueof(value, ++index, values)) != null + && (min > value || (min === undefined && value >= value))) { + min = value, minIndex = index; } } } - - return threshold(numbers.sort(ascending), 0.5); + return minIndex; } -function merge(arrays) { - var n = arrays.length, - m, - i = -1, - j = 0, - merged, - array; - - while (++i < n) j += arrays[i].length; - merged = new Array(j); - - while (--n >= 0) { - array = arrays[n]; - m = array.length; - while (--m >= 0) { - merged[--j] = array[m]; - } +function pairs(values, pairof = pair) { + const pairs = []; + let previous; + let first = false; + for (const value of values) { + if (first) pairs.push(pairof(previous, value)); + previous = value; + first = true; } + return pairs; +} - return merged; +function pair(a, b) { + return [a, b]; } -function min(values, valueof) { - var n = values.length, - i = -1, - value, - min; +function sequence(start, stop, step) { + start = +start, stop = +stop, step = (n = arguments.length) < 2 ? (stop = start, start = 0, 1) : n < 3 ? 1 : +step; - if (valueof == null) { - while (++i < n) { // Find the first comparable value. - if ((value = values[i]) != null && value >= value) { - min = value; - while (++i < n) { // Compare the remaining values. - if ((value = values[i]) != null && min > value) { - min = value; - } - } - } - } + var i = -1, + n = Math.max(0, Math.ceil((stop - start) / step)) | 0, + range = new Array(n); + + while (++i < n) { + range[i] = start + i * step; } - else { - while (++i < n) { // Find the first comparable value. - if ((value = valueof(values[i], i, values)) != null && value >= value) { + return range; +} + +function least(values, compare = ascending$3) { + let min; + let defined = false; + if (compare.length === 1) { + let minValue; + for (const element of values) { + const value = compare(element); + if (defined + ? ascending$3(value, minValue) < 0 + : ascending$3(value, value) === 0) { + min = element; + minValue = value; + defined = true; + } + } + } else { + for (const value of values) { + if (defined + ? compare(value, min) < 0 + : compare(value, value) === 0) { min = value; - while (++i < n) { // Compare the remaining values. - if ((value = valueof(values[i], i, values)) != null && min > value) { - min = value; - } - } + defined = true; } } } - return min; } -function permute(array, indexes) { - var i = indexes.length, permutes = new Array(i); - while (i--) permutes[i] = array[indexes[i]]; - return permutes; +function leastIndex(values, compare = ascending$3) { + if (compare.length === 1) return minIndex(values, compare); + let minValue; + let min = -1; + let index = -1; + for (const value of values) { + ++index; + if (min < 0 + ? compare(value, value) === 0 + : compare(value, minValue) < 0) { + minValue = value; + min = index; + } + } + return min; } -function scan(values, compare) { - if (!(n = values.length)) return; - var n, - i = 0, - j = 0, - xi, - xj = values[j]; - - if (compare == null) compare = ascending; - - while (++i < n) { - if (compare(xi = values[i], xj) < 0 || compare(xj, xj) !== 0) { - xj = xi, j = i; +function greatest(values, compare = ascending$3) { + let max; + let defined = false; + if (compare.length === 1) { + let maxValue; + for (const element of values) { + const value = compare(element); + if (defined + ? ascending$3(value, maxValue) > 0 + : ascending$3(value, value) === 0) { + max = element; + maxValue = value; + defined = true; + } + } + } else { + for (const value of values) { + if (defined + ? compare(value, max) > 0 + : compare(value, value) === 0) { + max = value; + defined = true; + } } } - - if (compare(xj, xj) === 0) return j; + return max; } -function shuffle(array, i0, i1) { - var m = (i1 == null ? array.length : i1) - (i0 = i0 == null ? 0 : +i0), - t, - i; - - while (m) { - i = Math.random() * m-- | 0; - t = array[m + i0]; - array[m + i0] = array[i + i0]; - array[i + i0] = t; +function greatestIndex(values, compare = ascending$3) { + if (compare.length === 1) return maxIndex(values, compare); + let maxValue; + let max = -1; + let index = -1; + for (const value of values) { + ++index; + if (max < 0 + ? compare(value, value) === 0 + : compare(value, maxValue) > 0) { + maxValue = value; + max = index; + } } + return max; +} - return array; +function scan(values, compare) { + const index = leastIndex(values, compare); + return index < 0 ? undefined : index; } -function sum(values, valueof) { - var n = values.length, - i = -1, - value, - sum = 0; +var shuffle$1 = shuffler(Math.random); - if (valueof == null) { - while (++i < n) { - if (value = +values[i]) sum += value; // Note: zero and null are equivalent. +function shuffler(random) { + return function shuffle(array, i0 = 0, i1 = array.length) { + let m = i1 - (i0 = +i0); + while (m) { + const i = random() * m-- | 0, t = array[m + i0]; + array[m + i0] = array[i + i0]; + array[i + i0] = t; } - } + return array; + }; +} - else { - while (++i < n) { - if (value = +valueof(values[i], i, values)) sum += value; +function sum$1(values, valueof) { + let sum = 0; + if (valueof === undefined) { + for (let value of values) { + if (value = +value) { + sum += value; + } + } + } else { + let index = -1; + for (let value of values) { + if (value = +valueof(value, ++index, values)) { + sum += value; + } } } - return sum; } function transpose(matrix) { if (!(n = matrix.length)) return []; - for (var i = -1, m = min(matrix, length), transpose = new Array(m); ++i < m;) { + for (var i = -1, m = min$2(matrix, length$2), transpose = new Array(m); ++i < m;) { for (var j = -1, n, row = transpose[i] = new Array(n); ++j < n;) { row[j] = matrix[j][i]; } @@ -547,7 +970,7 @@ function transpose(matrix) { return transpose; } -function length(d) { +function length$2(d) { return d.length; } @@ -555,9 +978,139 @@ function zip() { return transpose(arguments); } -var slice$1 = Array.prototype.slice; +function every(values, test) { + if (typeof test !== "function") throw new TypeError("test is not a function"); + let index = -1; + for (const value of values) { + if (!test(value, ++index, values)) { + return false; + } + } + return true; +} + +function some(values, test) { + if (typeof test !== "function") throw new TypeError("test is not a function"); + let index = -1; + for (const value of values) { + if (test(value, ++index, values)) { + return true; + } + } + return false; +} + +function filter$1(values, test) { + if (typeof test !== "function") throw new TypeError("test is not a function"); + const array = []; + let index = -1; + for (const value of values) { + if (test(value, ++index, values)) { + array.push(value); + } + } + return array; +} + +function map$1(values, mapper) { + if (typeof values[Symbol.iterator] !== "function") throw new TypeError("values is not iterable"); + if (typeof mapper !== "function") throw new TypeError("mapper is not a function"); + return Array.from(values, (value, index) => mapper(value, index, values)); +} + +function reduce(values, reducer, value) { + if (typeof reducer !== "function") throw new TypeError("reducer is not a function"); + const iterator = values[Symbol.iterator](); + let done, next, index = -1; + if (arguments.length < 3) { + ({done, value} = iterator.next()); + if (done) return; + ++index; + } + while (({done, value: next} = iterator.next()), !done) { + value = reducer(value, next, ++index, values); + } + return value; +} + +function reverse$1(values) { + if (typeof values[Symbol.iterator] !== "function") throw new TypeError("values is not iterable"); + return Array.from(values).reverse(); +} + +function difference(values, ...others) { + values = new Set(values); + for (const other of others) { + for (const value of other) { + values.delete(value); + } + } + return values; +} + +function disjoint(values, other) { + const iterator = other[Symbol.iterator](), set = new Set(); + for (const v of values) { + if (set.has(v)) return false; + let value, done; + while (({value, done} = iterator.next())) { + if (done) break; + if (Object.is(v, value)) return false; + set.add(value); + } + } + return true; +} + +function set$2(values) { + return values instanceof Set ? values : new Set(values); +} + +function intersection(values, ...others) { + values = new Set(values); + others = others.map(set$2); + out: for (const value of values) { + for (const other of others) { + if (!other.has(value)) { + values.delete(value); + continue out; + } + } + } + return values; +} + +function superset(values, other) { + const iterator = values[Symbol.iterator](), set = new Set(); + for (const o of other) { + if (set.has(o)) continue; + let value, done; + while (({value, done} = iterator.next())) { + if (done) return false; + set.add(value); + if (Object.is(o, value)) break; + } + } + return true; +} + +function subset(values, other) { + return superset(other, values); +} + +function union(...others) { + const set = new Set(); + for (const other of others) { + for (const o of other) { + set.add(o); + } + } + return set; +} + +var slice$3 = Array.prototype.slice; -function identity$1(x) { +function identity$8(x) { return x; } @@ -565,28 +1118,24 @@ var top = 1, right = 2, bottom = 3, left = 4, - epsilon = 1e-6; + epsilon$5 = 1e-6; function translateX(x) { - return "translate(" + (x + 0.5) + ",0)"; + return "translate(" + x + ",0)"; } function translateY(y) { - return "translate(0," + (y + 0.5) + ")"; + return "translate(0," + y + ")"; } -function number$1(scale) { - return function(d) { - return +scale(d); - }; +function number$2(scale) { + return d => +scale(d); } -function center(scale) { - var offset = Math.max(0, scale.bandwidth() - 1) / 2; // Adjust for 0.5px offset. +function center$1(scale, offset) { + offset = Math.max(0, scale.bandwidth() - offset * 2) / 2; if (scale.round()) offset = Math.round(offset); - return function(d) { - return +scale(d) + offset; - }; + return d => +scale(d) + offset; } function entering() { @@ -600,18 +1149,19 @@ function axis(orient, scale) { tickSizeInner = 6, tickSizeOuter = 6, tickPadding = 3, + offset = typeof window !== "undefined" && window.devicePixelRatio > 1 ? 0 : 0.5, k = orient === top || orient === left ? -1 : 1, x = orient === left || orient === right ? "x" : "y", transform = orient === top || orient === bottom ? translateX : translateY; function axis(context) { var values = tickValues == null ? (scale.ticks ? scale.ticks.apply(scale, tickArguments) : scale.domain()) : tickValues, - format = tickFormat == null ? (scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments) : identity$1) : tickFormat, + format = tickFormat == null ? (scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments) : identity$8) : tickFormat, spacing = Math.max(tickSizeInner, 0) + tickPadding, range = scale.range(), - range0 = +range[0] + 0.5, - range1 = +range[range.length - 1] + 0.5, - position = (scale.bandwidth ? center : number$1)(scale.copy()), + range0 = +range[0] + offset, + range1 = +range[range.length - 1] + offset, + position = (scale.bandwidth ? center$1 : number$2)(scale.copy(), offset), selection = context.selection ? context.selection() : context, path = selection.selectAll(".domain").data([null]), tick = selection.selectAll(".tick").data(values, scale).order(), @@ -642,24 +1192,24 @@ function axis(orient, scale) { text = text.transition(context); tickExit = tickExit.transition(context) - .attr("opacity", epsilon) - .attr("transform", function(d) { return isFinite(d = position(d)) ? transform(d) : this.getAttribute("transform"); }); + .attr("opacity", epsilon$5) + .attr("transform", function(d) { return isFinite(d = position(d)) ? transform(d + offset) : this.getAttribute("transform"); }); tickEnter - .attr("opacity", epsilon) - .attr("transform", function(d) { var p = this.parentNode.__axis; return transform(p && isFinite(p = p(d)) ? p : position(d)); }); + .attr("opacity", epsilon$5) + .attr("transform", function(d) { var p = this.parentNode.__axis; return transform((p && isFinite(p = p(d)) ? p : position(d)) + offset); }); } tickExit.remove(); path - .attr("d", orient === left || orient == right - ? (tickSizeOuter ? "M" + k * tickSizeOuter + "," + range0 + "H0.5V" + range1 + "H" + k * tickSizeOuter : "M0.5," + range0 + "V" + range1) - : (tickSizeOuter ? "M" + range0 + "," + k * tickSizeOuter + "V0.5H" + range1 + "V" + k * tickSizeOuter : "M" + range0 + ",0.5H" + range1)); + .attr("d", orient === left || orient === right + ? (tickSizeOuter ? "M" + k * tickSizeOuter + "," + range0 + "H" + offset + "V" + range1 + "H" + k * tickSizeOuter : "M" + offset + "," + range0 + "V" + range1) + : (tickSizeOuter ? "M" + range0 + "," + k * tickSizeOuter + "V" + offset + "H" + range1 + "V" + k * tickSizeOuter : "M" + range0 + "," + offset + "H" + range1)); tick .attr("opacity", 1) - .attr("transform", function(d) { return transform(position(d)); }); + .attr("transform", function(d) { return transform(position(d) + offset); }); line .attr(x + "2", k * tickSizeInner); @@ -683,15 +1233,15 @@ function axis(orient, scale) { }; axis.ticks = function() { - return tickArguments = slice$1.call(arguments), axis; + return tickArguments = slice$3.call(arguments), axis; }; axis.tickArguments = function(_) { - return arguments.length ? (tickArguments = _ == null ? [] : slice$1.call(_), axis) : tickArguments.slice(); + return arguments.length ? (tickArguments = _ == null ? [] : slice$3.call(_), axis) : tickArguments.slice(); }; axis.tickValues = function(_) { - return arguments.length ? (tickValues = _ == null ? null : slice$1.call(_), axis) : tickValues && tickValues.slice(); + return arguments.length ? (tickValues = _ == null ? null : slice$3.call(_), axis) : tickValues && tickValues.slice(); }; axis.tickFormat = function(_) { @@ -714,6 +1264,10 @@ function axis(orient, scale) { return arguments.length ? (tickPadding = +_, axis) : tickPadding; }; + axis.offset = function(_) { + return arguments.length ? (offset = +_, axis) : offset; + }; + return axis; } @@ -733,7 +1287,7 @@ function axisLeft(scale) { return axis(left, scale); } -var noop = {value: function() {}}; +var noop$3 = {value: () => {}}; function dispatch() { for (var i = 0, n = arguments.length, _ = {}, t; i < n; ++i) { @@ -747,7 +1301,7 @@ function Dispatch(_) { this._ = _; } -function parseTypenames(typenames, types) { +function parseTypenames$1(typenames, types) { return typenames.trim().split(/^|\s+/).map(function(t) { var name = "", i = t.indexOf("."); if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i); @@ -760,14 +1314,14 @@ Dispatch.prototype = dispatch.prototype = { constructor: Dispatch, on: function(typename, callback) { var _ = this._, - T = parseTypenames(typename + "", _), + T = parseTypenames$1(typename + "", _), t, i = -1, n = T.length; // If no callback was specified, return the callback of the given type and name. if (arguments.length < 2) { - while (++i < n) if ((t = (typename = T[i]).type) && (t = get(_[t], typename.name))) return t; + while (++i < n) if ((t = (typename = T[i]).type) && (t = get$1(_[t], typename.name))) return t; return; } @@ -775,8 +1329,8 @@ Dispatch.prototype = dispatch.prototype = { // Otherwise, if a null callback was specified, remove callbacks of the given name. if (callback != null && typeof callback !== "function") throw new Error("invalid callback: " + callback); while (++i < n) { - if (t = (typename = T[i]).type) _[t] = set(_[t], typename.name, callback); - else if (callback == null) for (t in _) _[t] = set(_[t], typename.name, null); + if (t = (typename = T[i]).type) _[t] = set$1(_[t], typename.name, callback); + else if (callback == null) for (t in _) _[t] = set$1(_[t], typename.name, null); } return this; @@ -797,7 +1351,7 @@ Dispatch.prototype = dispatch.prototype = { } }; -function get(type, name) { +function get$1(type, name) { for (var i = 0, n = type.length, c; i < n; ++i) { if ((c = type[i]).name === name) { return c.value; @@ -805,10 +1359,10 @@ function get(type, name) { } } -function set(type, name, callback) { +function set$1(type, name, callback) { for (var i = 0, n = type.length; i < n; ++i) { if (type[i].name === name) { - type[i] = noop, type = type.slice(0, i).concat(type.slice(i + 1)); + type[i] = noop$3, type = type.slice(0, i).concat(type.slice(i + 1)); break; } } @@ -829,7 +1383,7 @@ var namespaces = { function namespace(name) { var prefix = name += "", i = prefix.indexOf(":"); if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1); - return namespaces.hasOwnProperty(prefix) ? {space: namespaces[prefix], local: name} : name; + return namespaces.hasOwnProperty(prefix) ? {space: namespaces[prefix], local: name} : name; // eslint-disable-line no-prototype-builtins } function creatorInherit(name) { @@ -855,10 +1409,10 @@ function creator(name) { : creatorInherit)(fullname); } -function none() {} +function none$2() {} function selector(selector) { - return selector == null ? none : function() { + return selector == null ? none$2 : function() { return this.querySelector(selector); }; } @@ -875,21 +1429,35 @@ function selection_select(select) { } } - return new Selection(subgroups, this._parents); + return new Selection$1(subgroups, this._parents); +} + +function array$4(x) { + return typeof x === "object" && "length" in x + ? x // Array, TypedArray, NodeList, array-like + : Array.from(x); // Map, Set, iterable, string, or anything else } -function empty() { +function empty$1() { return []; } function selectorAll(selector) { - return selector == null ? empty : function() { + return selector == null ? empty$1 : function() { return this.querySelectorAll(selector); }; } +function arrayAll(select) { + return function() { + var group = select.apply(this, arguments); + return group == null ? [] : array$4(group); + }; +} + function selection_selectAll(select) { - if (typeof select !== "function") select = selectorAll(select); + if (typeof select === "function") select = arrayAll(select); + else select = selectorAll(select); for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) { for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) { @@ -900,7 +1468,7 @@ function selection_selectAll(select) { } } - return new Selection(subgroups, parents); + return new Selection$1(subgroups, parents); } function matcher(selector) { @@ -909,6 +1477,46 @@ function matcher(selector) { }; } +function childMatcher(selector) { + return function(node) { + return node.matches(selector); + }; +} + +var find$1 = Array.prototype.find; + +function childFind(match) { + return function() { + return find$1.call(this.children, match); + }; +} + +function childFirst() { + return this.firstElementChild; +} + +function selection_selectChild(match) { + return this.select(match == null ? childFirst + : childFind(typeof match === "function" ? match : childMatcher(match))); +} + +var filter = Array.prototype.filter; + +function children() { + return this.children; +} + +function childrenFilter(match) { + return function() { + return filter.call(this.children, match); + }; +} + +function selection_selectChildren(match) { + return this.selectAll(match == null ? children + : childrenFilter(typeof match === "function" ? match : childMatcher(match))); +} + function selection_filter(match) { if (typeof match !== "function") match = matcher(match); @@ -920,7 +1528,7 @@ function selection_filter(match) { } } - return new Selection(subgroups, this._parents); + return new Selection$1(subgroups, this._parents); } function sparse(update) { @@ -928,7 +1536,7 @@ function sparse(update) { } function selection_enter() { - return new Selection(this._enter || this._groups.map(sparse), this._parents); + return new Selection$1(this._enter || this._groups.map(sparse), this._parents); } function EnterNode(parent, datum) { @@ -947,14 +1555,12 @@ EnterNode.prototype = { querySelectorAll: function(selector) { return this._parent.querySelectorAll(selector); } }; -function constant$1(x) { +function constant$a(x) { return function() { return x; }; } -var keyPrefix = "$"; // Protect against keys like “__proto__”. - function bindIndex(parent, group, enter, update, exit, data) { var i = 0, node, @@ -984,7 +1590,7 @@ function bindIndex(parent, group, enter, update, exit, data) { function bindKey(parent, group, enter, update, exit, data, key) { var i, node, - nodeByKeyValue = {}, + nodeByKeyValue = new Map, groupLength = group.length, dataLength = data.length, keyValues = new Array(groupLength), @@ -994,11 +1600,11 @@ function bindKey(parent, group, enter, update, exit, data, key) { // If multiple nodes have the same key, the duplicates are added to exit. for (i = 0; i < groupLength; ++i) { if (node = group[i]) { - keyValues[i] = keyValue = keyPrefix + key.call(node, node.__data__, i, group); - if (keyValue in nodeByKeyValue) { + keyValues[i] = keyValue = key.call(node, node.__data__, i, group) + ""; + if (nodeByKeyValue.has(keyValue)) { exit[i] = node; } else { - nodeByKeyValue[keyValue] = node; + nodeByKeyValue.set(keyValue, node); } } } @@ -1007,11 +1613,11 @@ function bindKey(parent, group, enter, update, exit, data, key) { // If there a node associated with this key, join and add it to update. // If there is not (or the key is a duplicate), add it to enter. for (i = 0; i < dataLength; ++i) { - keyValue = keyPrefix + key.call(parent, data[i], i, data); - if (node = nodeByKeyValue[keyValue]) { + keyValue = key.call(parent, data[i], i, data) + ""; + if (node = nodeByKeyValue.get(keyValue)) { update[i] = node; node.__data__ = data[i]; - nodeByKeyValue[keyValue] = null; + nodeByKeyValue.delete(keyValue); } else { enter[i] = new EnterNode(parent, data[i]); } @@ -1019,30 +1625,30 @@ function bindKey(parent, group, enter, update, exit, data, key) { // Add any remaining nodes that were not bound to data to exit. for (i = 0; i < groupLength; ++i) { - if ((node = group[i]) && (nodeByKeyValue[keyValues[i]] === node)) { + if ((node = group[i]) && (nodeByKeyValue.get(keyValues[i]) === node)) { exit[i] = node; } } } +function datum(node) { + return node.__data__; +} + function selection_data(value, key) { - if (!value) { - data = new Array(this.size()), j = -1; - this.each(function(d) { data[++j] = d; }); - return data; - } + if (!arguments.length) return Array.from(this, datum); var bind = key ? bindKey : bindIndex, parents = this._parents, groups = this._groups; - if (typeof value !== "function") value = constant$1(value); + if (typeof value !== "function") value = constant$a(value); for (var m = groups.length, update = new Array(m), enter = new Array(m), exit = new Array(m), j = 0; j < m; ++j) { var parent = parents[j], group = groups[j], groupLength = group.length, - data = value.call(parent, parent && parent.__data__, j, parents), + data = array$4(value.call(parent, parent && parent.__data__, j, parents)), dataLength = data.length, enterGroup = enter[j] = new Array(dataLength), updateGroup = update[j] = new Array(dataLength), @@ -1062,14 +1668,14 @@ function selection_data(value, key) { } } - update = new Selection(update, parents); + update = new Selection$1(update, parents); update._enter = enter; update._exit = exit; return update; } function selection_exit() { - return new Selection(this._exit || this._groups.map(sparse), this._parents); + return new Selection$1(this._exit || this._groups.map(sparse), this._parents); } function selection_join(onenter, onupdate, onexit) { @@ -1081,6 +1687,7 @@ function selection_join(onenter, onupdate, onexit) { } function selection_merge(selection) { + if (!(selection instanceof Selection$1)) throw new Error("invalid merge"); for (var groups0 = this._groups, groups1 = selection._groups, m0 = groups0.length, m1 = groups1.length, m = Math.min(m0, m1), merges = new Array(m0), j = 0; j < m; ++j) { for (var group0 = groups0[j], group1 = groups1[j], n = group0.length, merge = merges[j] = new Array(n), node, i = 0; i < n; ++i) { @@ -1094,7 +1701,7 @@ function selection_merge(selection) { merges[j] = groups0[j]; } - return new Selection(merges, this._parents); + return new Selection$1(merges, this._parents); } function selection_order() { @@ -1112,7 +1719,7 @@ function selection_order() { } function selection_sort(compare) { - if (!compare) compare = ascending$1; + if (!compare) compare = ascending$2; function compareNode(a, b) { return a && b ? compare(a.__data__, b.__data__) : !a - !b; @@ -1127,10 +1734,10 @@ function selection_sort(compare) { sortgroup.sort(compareNode); } - return new Selection(sortgroups, this._parents).order(); + return new Selection$1(sortgroups, this._parents).order(); } -function ascending$1(a, b) { +function ascending$2(a, b) { return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN; } @@ -1142,9 +1749,7 @@ function selection_call() { } function selection_nodes() { - var nodes = new Array(this.size()), i = -1; - this.each(function() { nodes[++i] = this; }); - return nodes; + return Array.from(this); } function selection_node() { @@ -1160,8 +1765,8 @@ function selection_node() { } function selection_size() { - var size = 0; - this.each(function() { ++size; }); + let size = 0; + for (const node of this) ++size; // eslint-disable-line no-unused-vars return size; } @@ -1180,31 +1785,31 @@ function selection_each(callback) { return this; } -function attrRemove(name) { +function attrRemove$1(name) { return function() { this.removeAttribute(name); }; } -function attrRemoveNS(fullname) { +function attrRemoveNS$1(fullname) { return function() { this.removeAttributeNS(fullname.space, fullname.local); }; } -function attrConstant(name, value) { +function attrConstant$1(name, value) { return function() { this.setAttribute(name, value); }; } -function attrConstantNS(fullname, value) { +function attrConstantNS$1(fullname, value) { return function() { this.setAttributeNS(fullname.space, fullname.local, value); }; } -function attrFunction(name, value) { +function attrFunction$1(name, value) { return function() { var v = value.apply(this, arguments); if (v == null) this.removeAttribute(name); @@ -1212,7 +1817,7 @@ function attrFunction(name, value) { }; } -function attrFunctionNS(fullname, value) { +function attrFunctionNS$1(fullname, value) { return function() { var v = value.apply(this, arguments); if (v == null) this.removeAttributeNS(fullname.space, fullname.local); @@ -1231,9 +1836,9 @@ function selection_attr(name, value) { } return this.each((value == null - ? (fullname.local ? attrRemoveNS : attrRemove) : (typeof value === "function" - ? (fullname.local ? attrFunctionNS : attrFunction) - : (fullname.local ? attrConstantNS : attrConstant)))(fullname, value)); + ? (fullname.local ? attrRemoveNS$1 : attrRemove$1) : (typeof value === "function" + ? (fullname.local ? attrFunctionNS$1 : attrFunction$1) + : (fullname.local ? attrConstantNS$1 : attrConstant$1)))(fullname, value)); } function defaultView(node) { @@ -1242,19 +1847,19 @@ function defaultView(node) { || node.defaultView; // node is a Document } -function styleRemove(name) { +function styleRemove$1(name) { return function() { this.style.removeProperty(name); }; } -function styleConstant(name, value, priority) { +function styleConstant$1(name, value, priority) { return function() { this.style.setProperty(name, value, priority); }; } -function styleFunction(name, value, priority) { +function styleFunction$1(name, value, priority) { return function() { var v = value.apply(this, arguments); if (v == null) this.style.removeProperty(name); @@ -1265,9 +1870,9 @@ function styleFunction(name, value, priority) { function selection_style(name, value, priority) { return arguments.length > 1 ? this.each((value == null - ? styleRemove : typeof value === "function" - ? styleFunction - : styleConstant)(name, value, priority == null ? "" : priority)) + ? styleRemove$1 : typeof value === "function" + ? styleFunction$1 + : styleConstant$1)(name, value, priority == null ? "" : priority)) : styleValue(this.node(), name); } @@ -1385,13 +1990,13 @@ function textRemove() { this.textContent = ""; } -function textConstant(value) { +function textConstant$1(value) { return function() { this.textContent = value; }; } -function textFunction(value) { +function textFunction$1(value) { return function() { var v = value.apply(this, arguments); this.textContent = v == null ? "" : v; @@ -1402,8 +2007,8 @@ function selection_text(value) { return arguments.length ? this.each(value == null ? textRemove : (typeof value === "function" - ? textFunction - : textConstant)(value)) + ? textFunction$1 + : textConstant$1)(value)) : this.node().textContent; } @@ -1497,40 +2102,13 @@ function selection_datum(value) { : this.node().__data__; } -var filterEvents = {}; - -exports.event = null; - -if (typeof document !== "undefined") { - var element = document.documentElement; - if (!("onmouseenter" in element)) { - filterEvents = {mouseenter: "mouseover", mouseleave: "mouseout"}; - } -} - -function filterContextListener(listener, index, group) { - listener = contextListener(listener, index, group); +function contextListener(listener) { return function(event) { - var related = event.relatedTarget; - if (!related || (related !== this && !(related.compareDocumentPosition(this) & 8))) { - listener.call(this, event); - } - }; -} - -function contextListener(listener, index, group) { - return function(event1) { - var event0 = exports.event; // Events can be reentrant (e.g., focus). - exports.event = event1; - try { - listener.call(this, this.__data__, index, group); - } finally { - exports.event = event0; - } + listener.call(this, event, this.__data__); }; } -function parseTypenames$1(typenames) { +function parseTypenames(typenames) { return typenames.trim().split(/^|\s+/).map(function(t) { var name = "", i = t.indexOf("."); if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i); @@ -1544,7 +2122,7 @@ function onRemove(typename) { if (!on) return; for (var j = 0, i = -1, m = on.length, o; j < m; ++j) { if (o = on[j], (!typename.type || o.type === typename.type) && o.name === typename.name) { - this.removeEventListener(o.type, o.listener, o.capture); + this.removeEventListener(o.type, o.listener, o.options); } else { on[++i] = o; } @@ -1554,27 +2132,26 @@ function onRemove(typename) { }; } -function onAdd(typename, value, capture) { - var wrap = filterEvents.hasOwnProperty(typename.type) ? filterContextListener : contextListener; - return function(d, i, group) { - var on = this.__on, o, listener = wrap(value, i, group); +function onAdd(typename, value, options) { + return function() { + var on = this.__on, o, listener = contextListener(value); if (on) for (var j = 0, m = on.length; j < m; ++j) { if ((o = on[j]).type === typename.type && o.name === typename.name) { - this.removeEventListener(o.type, o.listener, o.capture); - this.addEventListener(o.type, o.listener = listener, o.capture = capture); + this.removeEventListener(o.type, o.listener, o.options); + this.addEventListener(o.type, o.listener = listener, o.options = options); o.value = value; return; } } - this.addEventListener(typename.type, listener, capture); - o = {type: typename.type, name: typename.name, value: value, listener: listener, capture: capture}; + this.addEventListener(typename.type, listener, options); + o = {type: typename.type, name: typename.name, value: value, listener: listener, options: options}; if (!on) this.__on = [o]; else on.push(o); }; } -function selection_on(typename, value, capture) { - var typenames = parseTypenames$1(typename + ""), i, n = typenames.length, t; +function selection_on(typename, value, options) { + var typenames = parseTypenames(typename + ""), i, n = typenames.length, t; if (arguments.length < 2) { var on = this.node().__on; @@ -1589,22 +2166,10 @@ function selection_on(typename, value, capture) { } on = value ? onAdd : onRemove; - if (capture == null) capture = false; - for (i = 0; i < n; ++i) this.each(on(typenames[i], value, capture)); + for (i = 0; i < n; ++i) this.each(on(typenames[i], value, options)); return this; } -function customEvent(event1, listener, that, args) { - var event0 = exports.event; - event1.sourceEvent = exports.event; - exports.event = event1; - try { - return listener.apply(that, args); - } finally { - exports.event = event0; - } -} - function dispatchEvent(node, type, params) { var window = defaultView(node), event = window.CustomEvent; @@ -1638,27 +2203,42 @@ function selection_dispatch(type, params) { : dispatchConstant)(type, params)); } -var root = [null]; +function* selection_iterator() { + for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) { + for (var group = groups[j], i = 0, n = group.length, node; i < n; ++i) { + if (node = group[i]) yield node; + } + } +} + +var root$1 = [null]; -function Selection(groups, parents) { +function Selection$1(groups, parents) { this._groups = groups; this._parents = parents; } function selection() { - return new Selection([[document.documentElement]], root); + return new Selection$1([[document.documentElement]], root$1); } -Selection.prototype = selection.prototype = { - constructor: Selection, +function selection_selection() { + return this; +} + +Selection$1.prototype = selection.prototype = { + constructor: Selection$1, select: selection_select, selectAll: selection_selectAll, + selectChild: selection_selectChild, + selectChildren: selection_selectChildren, filter: selection_filter, data: selection_data, enter: selection_enter, exit: selection_exit, join: selection_join, merge: selection_merge, + selection: selection_selection, order: selection_order, sort: selection_sort, call: selection_call, @@ -1681,22 +2261,23 @@ Selection.prototype = selection.prototype = { clone: selection_clone, datum: selection_datum, on: selection_on, - dispatch: selection_dispatch + dispatch: selection_dispatch, + [Symbol.iterator]: selection_iterator }; function select(selector) { return typeof selector === "string" - ? new Selection([[document.querySelector(selector)]], [document.documentElement]) - : new Selection([[selector]], root); + ? new Selection$1([[document.querySelector(selector)]], [document.documentElement]) + : new Selection$1([[selector]], root$1); } -function create(name) { +function create$1(name) { return select(creator(name).call(document.documentElement)); } var nextId = 0; -function local() { +function local$1() { return new Local; } @@ -1704,7 +2285,7 @@ function Local() { this._ = "@" + (++nextId).toString(36); } -Local.prototype = local.prototype = { +Local.prototype = local$1.prototype = { constructor: Local, get: function(node) { var id = this._; @@ -1722,74 +2303,60 @@ Local.prototype = local.prototype = { } }; -function sourceEvent() { - var current = exports.event, source; - while (source = current.sourceEvent) current = source; - return current; +function sourceEvent(event) { + let sourceEvent; + while (sourceEvent = event.sourceEvent) event = sourceEvent; + return event; } -function point(node, event) { - var svg = node.ownerSVGElement || node; - - if (svg.createSVGPoint) { - var point = svg.createSVGPoint(); - point.x = event.clientX, point.y = event.clientY; - point = point.matrixTransform(node.getScreenCTM().inverse()); - return [point.x, point.y]; +function pointer(event, node) { + event = sourceEvent(event); + if (node === undefined) node = event.currentTarget; + if (node) { + var svg = node.ownerSVGElement || node; + if (svg.createSVGPoint) { + var point = svg.createSVGPoint(); + point.x = event.clientX, point.y = event.clientY; + point = point.matrixTransform(node.getScreenCTM().inverse()); + return [point.x, point.y]; + } + if (node.getBoundingClientRect) { + var rect = node.getBoundingClientRect(); + return [event.clientX - rect.left - node.clientLeft, event.clientY - rect.top - node.clientTop]; + } } - - var rect = node.getBoundingClientRect(); - return [event.clientX - rect.left - node.clientLeft, event.clientY - rect.top - node.clientTop]; + return [event.pageX, event.pageY]; } -function mouse(node) { - var event = sourceEvent(); - if (event.changedTouches) event = event.changedTouches[0]; - return point(node, event); +function pointers(events, node) { + if (events.target) { // i.e., instanceof Event, not TouchList or iterable + events = sourceEvent(events); + if (node === undefined) node = events.currentTarget; + events = events.touches || [events]; + } + return Array.from(events, event => pointer(event, node)); } function selectAll(selector) { return typeof selector === "string" - ? new Selection([document.querySelectorAll(selector)], [document.documentElement]) - : new Selection([selector == null ? [] : selector], root); -} - -function touch(node, touches, identifier) { - if (arguments.length < 3) identifier = touches, touches = sourceEvent().changedTouches; - - for (var i = 0, n = touches ? touches.length : 0, touch; i < n; ++i) { - if ((touch = touches[i]).identifier === identifier) { - return point(node, touch); - } - } - - return null; -} - -function touches(node, touches) { - if (touches == null) touches = sourceEvent().touches; - - for (var i = 0, n = touches ? touches.length : 0, points = new Array(n); i < n; ++i) { - points[i] = point(node, touches[i]); - } - - return points; + ? new Selection$1([document.querySelectorAll(selector)], [document.documentElement]) + : new Selection$1([selector == null ? [] : array$4(selector)], root$1); } -function nopropagation() { - exports.event.stopImmediatePropagation(); +function nopropagation$2(event) { + event.stopImmediatePropagation(); } -function noevent() { - exports.event.preventDefault(); - exports.event.stopImmediatePropagation(); +function noevent$2(event) { + event.preventDefault(); + event.stopImmediatePropagation(); } function dragDisable(view) { var root = view.document.documentElement, - selection = select(view).on("dragstart.drag", noevent, true); + selection = select(view).on("dragstart.drag", noevent$2, true); if ("onselectstart" in root) { - selection.on("selectstart.drag", noevent, true); + selection.on("selectstart.drag", noevent$2, true); } else { root.__noselect = root.style.MozUserSelect; root.style.MozUserSelect = "none"; @@ -1800,7 +2367,7 @@ function yesdrag(view, noclick) { var root = view.document.documentElement, selection = select(view).on("dragstart.drag", null); if (noclick) { - selection.on("click.drag", noevent, true); + selection.on("click.drag", noevent$2, true); setTimeout(function() { selection.on("click.drag", null); }, 0); } if ("onselectstart" in root) { @@ -1811,23 +2378,30 @@ function yesdrag(view, noclick) { } } -function constant$2(x) { - return function() { - return x; - }; -} - -function DragEvent(target, type, subject, id, active, x, y, dx, dy, dispatch) { - this.target = target; - this.type = type; - this.subject = subject; - this.identifier = id; - this.active = active; - this.x = x; - this.y = y; - this.dx = dx; - this.dy = dy; - this._ = dispatch; +var constant$9 = x => () => x; + +function DragEvent(type, { + sourceEvent, + subject, + target, + identifier, + active, + x, y, dx, dy, + dispatch +}) { + Object.defineProperties(this, { + type: {value: type, enumerable: true, configurable: true}, + sourceEvent: {value: sourceEvent, enumerable: true, configurable: true}, + subject: {value: subject, enumerable: true, configurable: true}, + target: {value: target, enumerable: true, configurable: true}, + identifier: {value: identifier, enumerable: true, configurable: true}, + active: {value: active, enumerable: true, configurable: true}, + x: {value: x, enumerable: true, configurable: true}, + y: {value: y, enumerable: true, configurable: true}, + dx: {value: dx, enumerable: true, configurable: true}, + dy: {value: dy, enumerable: true, configurable: true}, + _: {value: dispatch} + }); } DragEvent.prototype.on = function() { @@ -1836,27 +2410,27 @@ DragEvent.prototype.on = function() { }; // Ignore right-click, since that should open the context menu. -function defaultFilter() { - return !exports.event.ctrlKey && !exports.event.button; +function defaultFilter$2(event) { + return !event.ctrlKey && !event.button; } function defaultContainer() { return this.parentNode; } -function defaultSubject(d) { - return d == null ? {x: exports.event.x, y: exports.event.y} : d; +function defaultSubject(event, d) { + return d == null ? {x: event.x, y: event.y} : d; } -function defaultTouchable() { +function defaultTouchable$2() { return navigator.maxTouchPoints || ("ontouchstart" in this); } function drag() { - var filter = defaultFilter, + var filter = defaultFilter$2, container = defaultContainer, subject = defaultSubject, - touchable = defaultTouchable, + touchable = defaultTouchable$2, gestures = {}, listeners = dispatch("start", "drag", "end"), active = 0, @@ -1877,111 +2451,136 @@ function drag() { .style("-webkit-tap-highlight-color", "rgba(0,0,0,0)"); } - function mousedowned() { - if (touchending || !filter.apply(this, arguments)) return; - var gesture = beforestart("mouse", container.apply(this, arguments), mouse, this, arguments); + function mousedowned(event, d) { + if (touchending || !filter.call(this, event, d)) return; + var gesture = beforestart(this, container.call(this, event, d), event, d, "mouse"); if (!gesture) return; - select(exports.event.view).on("mousemove.drag", mousemoved, true).on("mouseup.drag", mouseupped, true); - dragDisable(exports.event.view); - nopropagation(); + select(event.view).on("mousemove.drag", mousemoved, true).on("mouseup.drag", mouseupped, true); + dragDisable(event.view); + nopropagation$2(event); mousemoving = false; - mousedownx = exports.event.clientX; - mousedowny = exports.event.clientY; - gesture("start"); + mousedownx = event.clientX; + mousedowny = event.clientY; + gesture("start", event); } - function mousemoved() { - noevent(); + function mousemoved(event) { + noevent$2(event); if (!mousemoving) { - var dx = exports.event.clientX - mousedownx, dy = exports.event.clientY - mousedowny; + var dx = event.clientX - mousedownx, dy = event.clientY - mousedowny; mousemoving = dx * dx + dy * dy > clickDistance2; } - gestures.mouse("drag"); + gestures.mouse("drag", event); } - function mouseupped() { - select(exports.event.view).on("mousemove.drag mouseup.drag", null); - yesdrag(exports.event.view, mousemoving); - noevent(); - gestures.mouse("end"); + function mouseupped(event) { + select(event.view).on("mousemove.drag mouseup.drag", null); + yesdrag(event.view, mousemoving); + noevent$2(event); + gestures.mouse("end", event); } - function touchstarted() { - if (!filter.apply(this, arguments)) return; - var touches = exports.event.changedTouches, - c = container.apply(this, arguments), + function touchstarted(event, d) { + if (!filter.call(this, event, d)) return; + var touches = event.changedTouches, + c = container.call(this, event, d), n = touches.length, i, gesture; for (i = 0; i < n; ++i) { - if (gesture = beforestart(touches[i].identifier, c, touch, this, arguments)) { - nopropagation(); - gesture("start"); + if (gesture = beforestart(this, c, event, d, touches[i].identifier, touches[i])) { + nopropagation$2(event); + gesture("start", event, touches[i]); } } } - function touchmoved() { - var touches = exports.event.changedTouches, + function touchmoved(event) { + var touches = event.changedTouches, n = touches.length, i, gesture; for (i = 0; i < n; ++i) { if (gesture = gestures[touches[i].identifier]) { - noevent(); - gesture("drag"); + noevent$2(event); + gesture("drag", event, touches[i]); } } } - function touchended() { - var touches = exports.event.changedTouches, + function touchended(event) { + var touches = event.changedTouches, n = touches.length, i, gesture; if (touchending) clearTimeout(touchending); touchending = setTimeout(function() { touchending = null; }, 500); // Ghost clicks are delayed! for (i = 0; i < n; ++i) { if (gesture = gestures[touches[i].identifier]) { - nopropagation(); - gesture("end"); + nopropagation$2(event); + gesture("end", event, touches[i]); } } } - function beforestart(id, container, point, that, args) { - var p = point(container, id), s, dx, dy, - sublisteners = listeners.copy(); + function beforestart(that, container, event, d, identifier, touch) { + var dispatch = listeners.copy(), + p = pointer(touch || event, container), dx, dy, + s; - if (!customEvent(new DragEvent(drag, "beforestart", s, id, active, p[0], p[1], 0, 0, sublisteners), function() { - if ((exports.event.subject = s = subject.apply(that, args)) == null) return false; - dx = s.x - p[0] || 0; - dy = s.y - p[1] || 0; - return true; - })) return; + if ((s = subject.call(that, new DragEvent("beforestart", { + sourceEvent: event, + target: drag, + identifier, + active, + x: p[0], + y: p[1], + dx: 0, + dy: 0, + dispatch + }), d)) == null) return; - return function gesture(type) { + dx = s.x - p[0] || 0; + dy = s.y - p[1] || 0; + + return function gesture(type, event, touch) { var p0 = p, n; switch (type) { - case "start": gestures[id] = gesture, n = active++; break; - case "end": delete gestures[id], --active; // nobreak - case "drag": p = point(container, id), n = active; break; + case "start": gestures[identifier] = gesture, n = active++; break; + case "end": delete gestures[identifier], --active; // nobreak + case "drag": p = pointer(touch || event, container), n = active; break; } - customEvent(new DragEvent(drag, type, s, id, n, p[0] + dx, p[1] + dy, p[0] - p0[0], p[1] - p0[1], sublisteners), sublisteners.apply, sublisteners, [type, that, args]); + dispatch.call( + type, + that, + new DragEvent(type, { + sourceEvent: event, + subject: s, + target: drag, + identifier, + active: n, + x: p[0] + dx, + y: p[1] + dy, + dx: p[0] - p0[0], + dy: p[1] - p0[1], + dispatch + }), + d + ); }; } drag.filter = function(_) { - return arguments.length ? (filter = typeof _ === "function" ? _ : constant$2(!!_), drag) : filter; + return arguments.length ? (filter = typeof _ === "function" ? _ : constant$9(!!_), drag) : filter; }; drag.container = function(_) { - return arguments.length ? (container = typeof _ === "function" ? _ : constant$2(_), drag) : container; + return arguments.length ? (container = typeof _ === "function" ? _ : constant$9(_), drag) : container; }; drag.subject = function(_) { - return arguments.length ? (subject = typeof _ === "function" ? _ : constant$2(_), drag) : subject; + return arguments.length ? (subject = typeof _ === "function" ? _ : constant$9(_), drag) : subject; }; drag.touchable = function(_) { - return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$2(!!_), drag) : touchable; + return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$9(!!_), drag) : touchable; }; drag.on = function() { @@ -2321,7 +2920,7 @@ function hslConvert(o) { return new Hsl(h, s, l, o.opacity); } -function hsl(h, s, l, opacity) { +function hsl$2(h, s, l, opacity) { return arguments.length === 1 ? hslConvert(h) : new Hsl(h, s, l, opacity == null ? 1 : opacity); } @@ -2332,7 +2931,7 @@ function Hsl(h, s, l, opacity) { this.opacity = +opacity; } -define(Hsl, hsl, extend(Color, { +define(Hsl, hsl$2, extend(Color, { brighter: function(k) { k = k == null ? brighter : Math.pow(brighter, k); return new Hsl(this.h, this.s, this.l * k, this.opacity); @@ -2377,18 +2976,18 @@ function hsl2rgb(h, m1, m2) { : m1) * 255; } -var deg2rad = Math.PI / 180; -var rad2deg = 180 / Math.PI; +const radians$1 = Math.PI / 180; +const degrees$2 = 180 / Math.PI; // https://observablehq.com/@mbostock/lab-and-rgb -var K = 18, +const K = 18, Xn = 0.96422, Yn = 1, Zn = 0.82521, - t0 = 4 / 29, - t1 = 6 / 29, - t2 = 3 * t1 * t1, - t3 = t1 * t1 * t1; + t0$1 = 4 / 29, + t1$1 = 6 / 29, + t2 = 3 * t1$1 * t1$1, + t3 = t1$1 * t1$1 * t1$1; function labConvert(o) { if (o instanceof Lab) return new Lab(o.l, o.a, o.b, o.opacity); @@ -2409,7 +3008,7 @@ function gray(l, opacity) { return new Lab(l, 0, 0, opacity == null ? 1 : opacity); } -function lab(l, a, b, opacity) { +function lab$1(l, a, b, opacity) { return arguments.length === 1 ? labConvert(l) : new Lab(l, a, b, opacity == null ? 1 : opacity); } @@ -2420,7 +3019,7 @@ function Lab(l, a, b, opacity) { this.opacity = +opacity; } -define(Lab, lab, extend(Color, { +define(Lab, lab$1, extend(Color, { brighter: function(k) { return new Lab(this.l + K * (k == null ? 1 : k), this.a, this.b, this.opacity); }, @@ -2444,11 +3043,11 @@ define(Lab, lab, extend(Color, { })); function xyz2lab(t) { - return t > t3 ? Math.pow(t, 1 / 3) : t / t2 + t0; + return t > t3 ? Math.pow(t, 1 / 3) : t / t2 + t0$1; } function lab2xyz(t) { - return t > t1 ? t * t * t : t2 * (t - t0); + return t > t1$1 ? t * t * t : t2 * (t - t0$1); } function lrgb2rgb(x) { @@ -2463,7 +3062,7 @@ function hclConvert(o) { if (o instanceof Hcl) return new Hcl(o.h, o.c, o.l, o.opacity); if (!(o instanceof Lab)) o = labConvert(o); if (o.a === 0 && o.b === 0) return new Hcl(NaN, 0 < o.l && o.l < 100 ? 0 : NaN, o.l, o.opacity); - var h = Math.atan2(o.b, o.a) * rad2deg; + var h = Math.atan2(o.b, o.a) * degrees$2; return new Hcl(h < 0 ? h + 360 : h, Math.sqrt(o.a * o.a + o.b * o.b), o.l, o.opacity); } @@ -2471,7 +3070,7 @@ function lch(l, c, h, opacity) { return arguments.length === 1 ? hclConvert(l) : new Hcl(h, c, l, opacity == null ? 1 : opacity); } -function hcl(h, c, l, opacity) { +function hcl$2(h, c, l, opacity) { return arguments.length === 1 ? hclConvert(h) : new Hcl(h, c, l, opacity == null ? 1 : opacity); } @@ -2484,11 +3083,11 @@ function Hcl(h, c, l, opacity) { function hcl2lab(o) { if (isNaN(o.h)) return new Lab(o.l, 0, 0, o.opacity); - var h = o.h * deg2rad; + var h = o.h * radians$1; return new Lab(o.l, Math.cos(h) * o.c, Math.sin(h) * o.c, o.opacity); } -define(Hcl, hcl, extend(Color, { +define(Hcl, hcl$2, extend(Color, { brighter: function(k) { return new Hcl(this.h, this.c, this.l + K * (k == null ? 1 : k), this.opacity); }, @@ -2519,11 +3118,11 @@ function cubehelixConvert(o) { bl = b - l, k = (E * (g - l) - C * bl) / D, s = Math.sqrt(k * k + bl * bl) / (E * l * (1 - l)), // NaN if l=0 or l=1 - h = s ? Math.atan2(k, bl) * rad2deg - 120 : NaN; + h = s ? Math.atan2(k, bl) * degrees$2 - 120 : NaN; return new Cubehelix(h < 0 ? h + 360 : h, s, l, o.opacity); } -function cubehelix(h, s, l, opacity) { +function cubehelix$3(h, s, l, opacity) { return arguments.length === 1 ? cubehelixConvert(h) : new Cubehelix(h, s, l, opacity == null ? 1 : opacity); } @@ -2534,7 +3133,7 @@ function Cubehelix(h, s, l, opacity) { this.opacity = +opacity; } -define(Cubehelix, cubehelix, extend(Color, { +define(Cubehelix, cubehelix$3, extend(Color, { brighter: function(k) { k = k == null ? brighter : Math.pow(brighter, k); return new Cubehelix(this.h, this.s, this.l * k, this.opacity); @@ -2544,7 +3143,7 @@ define(Cubehelix, cubehelix, extend(Color, { return new Cubehelix(this.h, this.s, this.l * k, this.opacity); }, rgb: function() { - var h = isNaN(this.h) ? 0 : (this.h + 120) * deg2rad, + var h = isNaN(this.h) ? 0 : (this.h + 120) * radians$1, l = +this.l, a = isNaN(this.s) ? 0 : this.s * l * (1 - l), cosh = Math.cos(h), @@ -2558,7 +3157,7 @@ define(Cubehelix, cubehelix, extend(Color, { } })); -function basis(t1, v0, v1, v2, v3) { +function basis$1(t1, v0, v1, v2, v3) { var t2 = t1 * t1, t3 = t2 * t1; return ((1 - 3 * t1 + 3 * t2 - t3) * v0 + (4 - 6 * t2 + 3 * t3) * v1 @@ -2566,7 +3165,7 @@ function basis(t1, v0, v1, v2, v3) { + t3 * v3) / 6; } -function basis$1(values) { +function basis$2(values) { var n = values.length - 1; return function(t) { var i = t <= 0 ? (t = 0) : t >= 1 ? (t = 1, n - 1) : Math.floor(t * n), @@ -2574,11 +3173,11 @@ function basis$1(values) { v2 = values[i + 1], v0 = i > 0 ? values[i - 1] : 2 * v1 - v2, v3 = i < n - 1 ? values[i + 2] : 2 * v2 - v1; - return basis((t - i / n) * n, v0, v1, v2, v3); + return basis$1((t - i / n) * n, v0, v1, v2, v3); }; } -function basisClosed(values) { +function basisClosed$1(values) { var n = values.length; return function(t) { var i = Math.floor(((t %= 1) < 0 ? ++t : t) * n), @@ -2586,46 +3185,42 @@ function basisClosed(values) { v1 = values[i % n], v2 = values[(i + 1) % n], v3 = values[(i + 2) % n]; - return basis((t - i / n) * n, v0, v1, v2, v3); + return basis$1((t - i / n) * n, v0, v1, v2, v3); }; } -function constant$3(x) { - return function() { - return x; - }; -} +var constant$8 = x => () => x; -function linear(a, d) { +function linear$2(a, d) { return function(t) { return a + t * d; }; } -function exponential(a, b, y) { +function exponential$1(a, b, y) { return a = Math.pow(a, y), b = Math.pow(b, y) - a, y = 1 / y, function(t) { return Math.pow(a + t * b, y); }; } -function hue(a, b) { +function hue$1(a, b) { var d = b - a; - return d ? linear(a, d > 180 || d < -180 ? d - 360 * Math.round(d / 360) : d) : constant$3(isNaN(a) ? b : a); + return d ? linear$2(a, d > 180 || d < -180 ? d - 360 * Math.round(d / 360) : d) : constant$8(isNaN(a) ? b : a); } -function gamma(y) { +function gamma$1(y) { return (y = +y) === 1 ? nogamma : function(a, b) { - return b - a ? exponential(a, b, y) : constant$3(isNaN(a) ? b : a); + return b - a ? exponential$1(a, b, y) : constant$8(isNaN(a) ? b : a); }; } function nogamma(a, b) { var d = b - a; - return d ? linear(a, d) : constant$3(isNaN(a) ? b : a); + return d ? linear$2(a, d) : constant$8(isNaN(a) ? b : a); } var interpolateRgb = (function rgbGamma(y) { - var color = gamma(y); + var color = gamma$1(y); function rgb$1(start, end) { var r = color((start = rgb(start)).r, (end = rgb(end)).r), @@ -2672,8 +3267,8 @@ function rgbSpline(spline) { }; } -var rgbBasis = rgbSpline(basis$1); -var rgbBasisClosed = rgbSpline(basisClosed); +var rgbBasis = rgbSpline(basis$2); +var rgbBasisClosed = rgbSpline(basisClosed$1); function numberArray(a, b) { if (!b) b = []; @@ -2690,7 +3285,7 @@ function isNumberArray(x) { return ArrayBuffer.isView(x) && !(x instanceof DataView); } -function array$1(a, b) { +function array$3(a, b) { return (isNumberArray(b) ? numberArray : genericArray)(a, b); } @@ -2701,7 +3296,7 @@ function genericArray(a, b) { c = new Array(nb), i; - for (i = 0; i < na; ++i) x[i] = interpolateValue(a[i], b[i]); + for (i = 0; i < na; ++i) x[i] = interpolate$2(a[i], b[i]); for (; i < nb; ++i) c[i] = b[i]; return function(t) { @@ -2710,7 +3305,7 @@ function genericArray(a, b) { }; } -function date(a, b) { +function date$1(a, b) { var d = new Date; return a = +a, b = +b, function(t) { return d.setTime(a * (1 - t) + b * t), d; @@ -2723,7 +3318,7 @@ function interpolateNumber(a, b) { }; } -function object(a, b) { +function object$1(a, b) { var i = {}, c = {}, k; @@ -2733,7 +3328,7 @@ function object(a, b) { for (k in b) { if (k in a) { - i[k] = interpolateValue(a[k], b[k]); + i[k] = interpolate$2(a[k], b[k]); } else { c[k] = b[k]; } @@ -2808,16 +3403,16 @@ function interpolateString(a, b) { }); } -function interpolateValue(a, b) { +function interpolate$2(a, b) { var t = typeof b, c; - return b == null || t === "boolean" ? constant$3(b) + return b == null || t === "boolean" ? constant$8(b) : (t === "number" ? interpolateNumber : t === "string" ? ((c = color(b)) ? (b = c, interpolateRgb) : interpolateString) : b instanceof color ? interpolateRgb - : b instanceof Date ? date + : b instanceof Date ? date$1 : isNumberArray(b) ? numberArray : Array.isArray(b) ? genericArray - : typeof b.valueOf !== "function" && typeof b.toString !== "function" || isNaN(b) ? object + : typeof b.valueOf !== "function" && typeof b.toString !== "function" || isNaN(b) ? object$1 : interpolateNumber)(a, b); } @@ -2828,8 +3423,8 @@ function discrete(range) { }; } -function hue$1(a, b) { - var i = hue(+a, +b); +function hue(a, b) { + var i = hue$1(+a, +b); return function(t) { var x = i(t); return x - 360 * Math.floor(x / 360); @@ -2842,9 +3437,9 @@ function interpolateRound(a, b) { }; } -var degrees = 180 / Math.PI; +var degrees$1 = 180 / Math.PI; -var identity$2 = { +var identity$7 = { translateX: 0, translateY: 0, rotate: 0, @@ -2862,33 +3457,26 @@ function decompose(a, b, c, d, e, f) { return { translateX: e, translateY: f, - rotate: Math.atan2(b, a) * degrees, - skewX: Math.atan(skewX) * degrees, + rotate: Math.atan2(b, a) * degrees$1, + skewX: Math.atan(skewX) * degrees$1, scaleX: scaleX, scaleY: scaleY }; } -var cssNode, - cssRoot, - cssView, - svgNode; +var svgNode; +/* eslint-disable no-undef */ function parseCss(value) { - if (value === "none") return identity$2; - if (!cssNode) cssNode = document.createElement("DIV"), cssRoot = document.documentElement, cssView = document.defaultView; - cssNode.style.transform = value; - value = cssView.getComputedStyle(cssRoot.appendChild(cssNode), null).getPropertyValue("transform"); - cssRoot.removeChild(cssNode); - value = value.slice(7, -1).split(","); - return decompose(+value[0], +value[1], +value[2], +value[3], +value[4], +value[5]); + const m = new (typeof DOMMatrix === "function" ? DOMMatrix : WebKitCSSMatrix)(value + ""); + return m.isIdentity ? identity$7 : decompose(m.a, m.b, m.c, m.d, m.e, m.f); } function parseSvg(value) { - if (value == null) return identity$2; + if (value == null) return identity$7; if (!svgNode) svgNode = document.createElementNS("http://www.w3.org/2000/svg", "g"); svgNode.setAttribute("transform", value); - if (!(value = svgNode.transform.baseVal.consolidate())) return identity$2; + if (!(value = svgNode.transform.baseVal.consolidate())) return identity$7; value = value.matrix; return decompose(value.a, value.b, value.c, value.d, value.e, value.f); } @@ -2954,10 +3542,7 @@ function interpolateTransform(parse, pxComma, pxParen, degParen) { var interpolateTransformCss = interpolateTransform(parseCss, "px, ", "px)", "deg)"); var interpolateTransformSvg = interpolateTransform(parseSvg, ", ", ")", ")"); -var rho = Math.SQRT2, - rho2 = 2, - rho4 = 4, - epsilon2 = 1e-12; +var epsilon2$1 = 1e-12; function cosh(x) { return ((x = Math.exp(x)) + 1 / x) / 2; @@ -2971,57 +3556,67 @@ function tanh(x) { return ((x = Math.exp(2 * x)) - 1) / (x + 1); } -// p0 = [ux0, uy0, w0] -// p1 = [ux1, uy1, w1] -function interpolateZoom(p0, p1) { - var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], - ux1 = p1[0], uy1 = p1[1], w1 = p1[2], - dx = ux1 - ux0, - dy = uy1 - uy0, - d2 = dx * dx + dy * dy, - i, - S; - - // Special case for u0 ≅ u1. - if (d2 < epsilon2) { - S = Math.log(w1 / w0) / rho; - i = function(t) { - return [ - ux0 + t * dx, - uy0 + t * dy, - w0 * Math.exp(rho * t * S) - ]; - }; - } +var interpolateZoom = (function zoomRho(rho, rho2, rho4) { - // General case. - else { - var d1 = Math.sqrt(d2), - b0 = (w1 * w1 - w0 * w0 + rho4 * d2) / (2 * w0 * rho2 * d1), - b1 = (w1 * w1 - w0 * w0 - rho4 * d2) / (2 * w1 * rho2 * d1), - r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), - r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1); - S = (r1 - r0) / rho; - i = function(t) { - var s = t * S, - coshr0 = cosh(r0), - u = w0 / (rho2 * d1) * (coshr0 * tanh(rho * s + r0) - sinh(r0)); - return [ - ux0 + u * dx, - uy0 + u * dy, - w0 * coshr0 / cosh(rho * s + r0) - ]; - }; - } + // p0 = [ux0, uy0, w0] + // p1 = [ux1, uy1, w1] + function zoom(p0, p1) { + var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], + ux1 = p1[0], uy1 = p1[1], w1 = p1[2], + dx = ux1 - ux0, + dy = uy1 - uy0, + d2 = dx * dx + dy * dy, + i, + S; + + // Special case for u0 ≅ u1. + if (d2 < epsilon2$1) { + S = Math.log(w1 / w0) / rho; + i = function(t) { + return [ + ux0 + t * dx, + uy0 + t * dy, + w0 * Math.exp(rho * t * S) + ]; + }; + } - i.duration = S * 1000; + // General case. + else { + var d1 = Math.sqrt(d2), + b0 = (w1 * w1 - w0 * w0 + rho4 * d2) / (2 * w0 * rho2 * d1), + b1 = (w1 * w1 - w0 * w0 - rho4 * d2) / (2 * w1 * rho2 * d1), + r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), + r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1); + S = (r1 - r0) / rho; + i = function(t) { + var s = t * S, + coshr0 = cosh(r0), + u = w0 / (rho2 * d1) * (coshr0 * tanh(rho * s + r0) - sinh(r0)); + return [ + ux0 + u * dx, + uy0 + u * dy, + w0 * coshr0 / cosh(rho * s + r0) + ]; + }; + } - return i; -} + i.duration = S * 1000 * rho / Math.SQRT2; -function hsl$1(hue) { + return i; + } + + zoom.rho = function(_) { + var _1 = Math.max(1e-3, +_), _2 = _1 * _1, _4 = _2 * _2; + return zoomRho(_1, _2, _4); + }; + + return zoom; +})(Math.SQRT2, 2, 4); + +function hsl(hue) { return function(start, end) { - var h = hue((start = hsl(start)).h, (end = hsl(end)).h), + var h = hue((start = hsl$2(start)).h, (end = hsl$2(end)).h), s = nogamma(start.s, end.s), l = nogamma(start.l, end.l), opacity = nogamma(start.opacity, end.opacity); @@ -3035,11 +3630,11 @@ function hsl$1(hue) { } } -var hsl$2 = hsl$1(hue); -var hslLong = hsl$1(nogamma); +var hsl$1 = hsl(hue$1); +var hslLong = hsl(nogamma); -function lab$1(start, end) { - var l = nogamma((start = lab(start)).l, (end = lab(end)).l), +function lab(start, end) { + var l = nogamma((start = lab$1(start)).l, (end = lab$1(end)).l), a = nogamma(start.a, end.a), b = nogamma(start.b, end.b), opacity = nogamma(start.opacity, end.opacity); @@ -3052,9 +3647,9 @@ function lab$1(start, end) { }; } -function hcl$1(hue) { +function hcl(hue) { return function(start, end) { - var h = hue((start = hcl(start)).h, (end = hcl(end)).h), + var h = hue((start = hcl$2(start)).h, (end = hcl$2(end)).h), c = nogamma(start.c, end.c), l = nogamma(start.l, end.l), opacity = nogamma(start.opacity, end.opacity); @@ -3068,15 +3663,15 @@ function hcl$1(hue) { } } -var hcl$2 = hcl$1(hue); -var hclLong = hcl$1(nogamma); +var hcl$1 = hcl(hue$1); +var hclLong = hcl(nogamma); function cubehelix$1(hue) { return (function cubehelixGamma(y) { y = +y; - function cubehelix$1(start, end) { - var h = hue((start = cubehelix(start)).h, (end = cubehelix(end)).h), + function cubehelix(start, end) { + var h = hue((start = cubehelix$3(start)).h, (end = cubehelix$3(end)).h), s = nogamma(start.s, end.s), l = nogamma(start.l, end.l), opacity = nogamma(start.opacity, end.opacity); @@ -3089,16 +3684,17 @@ function cubehelix$1(hue) { }; } - cubehelix$1.gamma = cubehelixGamma; + cubehelix.gamma = cubehelixGamma; - return cubehelix$1; + return cubehelix; })(1); } -var cubehelix$2 = cubehelix$1(hue); +var cubehelix$2 = cubehelix$1(hue$1); var cubehelixLong = cubehelix$1(nogamma); function piecewise(interpolate, values) { + if (values === undefined) values = interpolate, interpolate = interpolate$2; var i = 0, n = values.length - 1, v = values[0], I = new Array(n < 0 ? 0 : n); while (i < n) I[i] = interpolate(v, v = values[++i]); return function(t) { @@ -3107,15 +3703,15 @@ function piecewise(interpolate, values) { }; } -function quantize(interpolator, n) { +function quantize$1(interpolator, n) { var samples = new Array(n); for (var i = 0; i < n; ++i) samples[i] = interpolator(i / (n - 1)); return samples; } var frame = 0, // is an animation frame pending? - timeout = 0, // is a timeout pending? - interval = 0, // are any timers active? + timeout$1 = 0, // is a timeout pending? + interval$1 = 0, // are any timers active? pokeDelay = 1000, // how frequently we check for clock skew taskHead, taskTail, @@ -3181,7 +3777,7 @@ function timerFlush() { function wake() { clockNow = (clockLast = clock.now()) + clockSkew; - frame = timeout = 0; + frame = timeout$1 = 0; try { timerFlush(); } finally { @@ -3213,36 +3809,40 @@ function nap() { function sleep(time) { if (frame) return; // Soonest alarm already set, or will be. - if (timeout) timeout = clearTimeout(timeout); + if (timeout$1) timeout$1 = clearTimeout(timeout$1); var delay = time - clockNow; // Strictly less than if we recomputed clockNow. if (delay > 24) { - if (time < Infinity) timeout = setTimeout(wake, time - clock.now() - clockSkew); - if (interval) interval = clearInterval(interval); + if (time < Infinity) timeout$1 = setTimeout(wake, time - clock.now() - clockSkew); + if (interval$1) interval$1 = clearInterval(interval$1); } else { - if (!interval) clockLast = clock.now(), interval = setInterval(poke, pokeDelay); + if (!interval$1) clockLast = clock.now(), interval$1 = setInterval(poke, pokeDelay); frame = 1, setFrame(wake); } } -function timeout$1(callback, delay, time) { +function timeout(callback, delay, time) { var t = new Timer; delay = delay == null ? 0 : +delay; - t.restart(function(elapsed) { + t.restart(elapsed => { t.stop(); callback(elapsed + delay); }, delay, time); return t; } -function interval$1(callback, delay, time) { +function interval(callback, delay, time) { var t = new Timer, total = delay; if (delay == null) return t.restart(callback, delay, time), t; - delay = +delay, time = time == null ? now() : +time; - t.restart(function tick(elapsed) { - elapsed += total; - t.restart(tick, total += delay, time); - callback(elapsed); - }, delay, time); + t._restart = t.restart; + t.restart = function(callback, delay, time) { + delay = +delay, time = time == null ? now() : +time; + t._restart(function tick(elapsed) { + elapsed += total; + t._restart(tick, total += delay, time); + callback(elapsed); + }, delay, time); + }; + t.restart(callback, delay, time); return t; } @@ -3261,7 +3861,7 @@ function schedule(node, name, id, index, group, timing) { var schedules = node.__transition; if (!schedules) node.__transition = {}; else if (id in schedules) return; - create$1(node, id, { + create(node, id, { name: name, index: index, // For context during callback. group: group, // For context during callback. @@ -3277,24 +3877,24 @@ function schedule(node, name, id, index, group, timing) { } function init(node, id) { - var schedule = get$1(node, id); + var schedule = get(node, id); if (schedule.state > CREATED) throw new Error("too late; already scheduled"); return schedule; } -function set$1(node, id) { - var schedule = get$1(node, id); +function set(node, id) { + var schedule = get(node, id); if (schedule.state > STARTED) throw new Error("too late; already running"); return schedule; } -function get$1(node, id) { +function get(node, id) { var schedule = node.__transition; if (!schedule || !(schedule = schedule[id])) throw new Error("transition not found"); return schedule; } -function create$1(node, id, self) { +function create(node, id, self) { var schedules = node.__transition, tween; @@ -3324,7 +3924,7 @@ function create$1(node, id, self) { // While this element already has a starting transition during this frame, // defer starting an interrupting transition until that transition has a // chance to tick (and possibly end); see d3/d3-transition#54! - if (o.state === STARTED) return timeout$1(start); + if (o.state === STARTED) return timeout(start); // Interrupt the active transition, if any. if (o.state === RUNNING) { @@ -3347,7 +3947,7 @@ function create$1(node, id, self) { // Note the transition may be canceled after start and before the first tick! // Note this must be scheduled before the start event; see d3/d3-transition#16! // Assuming this is successful, subsequent callbacks go straight to tick. - timeout$1(function() { + timeout(function() { if (self.state === STARTED) { self.state = RUNNING; self.timer.restart(tick, self.delay, self.time); @@ -3429,7 +4029,7 @@ function selection_interrupt(name) { function tweenRemove(id, name) { var tween0, tween1; return function() { - var schedule = set$1(this, id), + var schedule = set(this, id), tween = schedule.tween; // If this node shared tween with the previous node, @@ -3454,7 +4054,7 @@ function tweenFunction(id, name, value) { var tween0, tween1; if (typeof value !== "function") throw new Error; return function() { - var schedule = set$1(this, id), + var schedule = set(this, id), tween = schedule.tween; // If this node shared tween with the previous node, @@ -3481,7 +4081,7 @@ function transition_tween(name, value) { name += ""; if (arguments.length < 2) { - var tween = get$1(this.node(), id).tween; + var tween = get(this.node(), id).tween; for (var i = 0, n = tween.length, t; i < n; ++i) { if ((t = tween[i]).name === name) { return t.value; @@ -3497,16 +4097,16 @@ function tweenValue(transition, name, value) { var id = transition._id; transition.each(function() { - var schedule = set$1(this, id); + var schedule = set(this, id); (schedule.value || (schedule.value = {}))[name] = value.apply(this, arguments); }); return function(node) { - return get$1(node, id).value[name]; + return get(node, id).value[name]; }; } -function interpolate(a, b) { +function interpolate$1(a, b) { var c; return (typeof b === "number" ? interpolateNumber : b instanceof color ? interpolateRgb @@ -3514,19 +4114,19 @@ function interpolate(a, b) { : interpolateString)(a, b); } -function attrRemove$1(name) { +function attrRemove(name) { return function() { this.removeAttribute(name); }; } -function attrRemoveNS$1(fullname) { +function attrRemoveNS(fullname) { return function() { this.removeAttributeNS(fullname.space, fullname.local); }; } -function attrConstant$1(name, interpolate, value1) { +function attrConstant(name, interpolate, value1) { var string00, string1 = value1 + "", interpolate0; @@ -3538,7 +4138,7 @@ function attrConstant$1(name, interpolate, value1) { }; } -function attrConstantNS$1(fullname, interpolate, value1) { +function attrConstantNS(fullname, interpolate, value1) { var string00, string1 = value1 + "", interpolate0; @@ -3550,7 +4150,7 @@ function attrConstantNS$1(fullname, interpolate, value1) { }; } -function attrFunction$1(name, interpolate, value) { +function attrFunction(name, interpolate, value) { var string00, string10, interpolate0; @@ -3565,7 +4165,7 @@ function attrFunction$1(name, interpolate, value) { }; } -function attrFunctionNS$1(fullname, interpolate, value) { +function attrFunctionNS(fullname, interpolate, value) { var string00, string10, interpolate0; @@ -3581,11 +4181,11 @@ function attrFunctionNS$1(fullname, interpolate, value) { } function transition_attr(name, value) { - var fullname = namespace(name), i = fullname === "transform" ? interpolateTransformSvg : interpolate; + var fullname = namespace(name), i = fullname === "transform" ? interpolateTransformSvg : interpolate$1; return this.attrTween(name, typeof value === "function" - ? (fullname.local ? attrFunctionNS$1 : attrFunction$1)(fullname, i, tweenValue(this, "attr." + name, value)) - : value == null ? (fullname.local ? attrRemoveNS$1 : attrRemove$1)(fullname) - : (fullname.local ? attrConstantNS$1 : attrConstant$1)(fullname, i, value)); + ? (fullname.local ? attrFunctionNS : attrFunction)(fullname, i, tweenValue(this, "attr." + name, value)) + : value == null ? (fullname.local ? attrRemoveNS : attrRemove)(fullname) + : (fullname.local ? attrConstantNS : attrConstant)(fullname, i, value)); } function attrInterpolate(name, i) { @@ -3650,18 +4250,18 @@ function transition_delay(value) { ? this.each((typeof value === "function" ? delayFunction : delayConstant)(id, value)) - : get$1(this.node(), id).delay; + : get(this.node(), id).delay; } function durationFunction(id, value) { return function() { - set$1(this, id).duration = +value.apply(this, arguments); + set(this, id).duration = +value.apply(this, arguments); }; } function durationConstant(id, value) { return value = +value, function() { - set$1(this, id).duration = value; + set(this, id).duration = value; }; } @@ -3672,13 +4272,13 @@ function transition_duration(value) { ? this.each((typeof value === "function" ? durationFunction : durationConstant)(id, value)) - : get$1(this.node(), id).duration; + : get(this.node(), id).duration; } function easeConstant(id, value) { if (typeof value !== "function") throw new Error; return function() { - set$1(this, id).ease = value; + set(this, id).ease = value; }; } @@ -3687,7 +4287,20 @@ function transition_ease(value) { return arguments.length ? this.each(easeConstant(id, value)) - : get$1(this.node(), id).ease; + : get(this.node(), id).ease; +} + +function easeVarying(id, value) { + return function() { + var v = value.apply(this, arguments); + if (typeof v !== "function") throw new Error; + set(this, id).ease = v; + }; +} + +function transition_easeVarying(value) { + if (typeof value !== "function") throw new Error; + return this.each(easeVarying(this._id, value)); } function transition_filter(match) { @@ -3731,7 +4344,7 @@ function start(name) { } function onFunction(id, name, listener) { - var on0, on1, sit = start(name) ? init : set$1; + var on0, on1, sit = start(name) ? init : set; return function() { var schedule = sit(this, id), on = schedule.on; @@ -3749,7 +4362,7 @@ function transition_on(name, listener) { var id = this._id; return arguments.length < 2 - ? get$1(this.node(), id).on.on(name) + ? get(this.node(), id).on.on(name) : this.each(onFunction(id, name, listener)); } @@ -3776,7 +4389,7 @@ function transition_select(select) { if ((node = group[i]) && (subnode = select.call(node, node.__data__, i, group))) { if ("__data__" in node) subnode.__data__ = node.__data__; subgroup[i] = subnode; - schedule(subgroup[i], name, id, i, subgroup, get$1(node, id)); + schedule(subgroup[i], name, id, i, subgroup, get(node, id)); } } } @@ -3793,7 +4406,7 @@ function transition_selectAll(select) { for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) { for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) { if (node = group[i]) { - for (var children = select.call(node, node.__data__, i, group), child, inherit = get$1(node, id), k = 0, l = children.length; k < l; ++k) { + for (var children = select.call(node, node.__data__, i, group), child, inherit = get(node, id), k = 0, l = children.length; k < l; ++k) { if (child = children[k]) { schedule(child, name, id, k, children, inherit); } @@ -3807,10 +4420,10 @@ function transition_selectAll(select) { return new Transition(subgroups, parents, name, id); } -var Selection$1 = selection.prototype.constructor; +var Selection = selection.prototype.constructor; function transition_selection() { - return new Selection$1(this._groups, this._parents); + return new Selection(this._groups, this._parents); } function styleNull(name, interpolate) { @@ -3826,13 +4439,13 @@ function styleNull(name, interpolate) { }; } -function styleRemove$1(name) { +function styleRemove(name) { return function() { this.style.removeProperty(name); }; } -function styleConstant$1(name, interpolate, value1) { +function styleConstant(name, interpolate, value1) { var string00, string1 = value1 + "", interpolate0; @@ -3844,7 +4457,7 @@ function styleConstant$1(name, interpolate, value1) { }; } -function styleFunction$1(name, interpolate, value) { +function styleFunction(name, interpolate, value) { var string00, string10, interpolate0; @@ -3862,9 +4475,9 @@ function styleFunction$1(name, interpolate, value) { function styleMaybeRemove(id, name) { var on0, on1, listener0, key = "style." + name, event = "end." + key, remove; return function() { - var schedule = set$1(this, id), + var schedule = set(this, id), on = schedule.on, - listener = schedule.value[key] == null ? remove || (remove = styleRemove$1(name)) : undefined; + listener = schedule.value[key] == null ? remove || (remove = styleRemove(name)) : undefined; // If this node shared a dispatch with the previous node, // just assign the updated shared dispatch and we’re done! @@ -3876,15 +4489,15 @@ function styleMaybeRemove(id, name) { } function transition_style(name, value, priority) { - var i = (name += "") === "transform" ? interpolateTransformCss : interpolate; + var i = (name += "") === "transform" ? interpolateTransformCss : interpolate$1; return value == null ? this .styleTween(name, styleNull(name, i)) - .on("end.style." + name, styleRemove$1(name)) + .on("end.style." + name, styleRemove(name)) : typeof value === "function" ? this - .styleTween(name, styleFunction$1(name, i, tweenValue(this, "style." + name, value))) + .styleTween(name, styleFunction(name, i, tweenValue(this, "style." + name, value))) .each(styleMaybeRemove(this._id, name)) : this - .styleTween(name, styleConstant$1(name, i, value), priority) + .styleTween(name, styleConstant(name, i, value), priority) .on("end.style." + name, null); } @@ -3913,13 +4526,13 @@ function transition_styleTween(name, value, priority) { return this.tween(key, styleTween(name, value, priority == null ? "" : priority)); } -function textConstant$1(value) { +function textConstant(value) { return function() { this.textContent = value; }; } -function textFunction$1(value) { +function textFunction(value) { return function() { var value1 = value(this); this.textContent = value1 == null ? "" : value1; @@ -3928,8 +4541,8 @@ function textFunction$1(value) { function transition_text(value) { return this.tween("text", typeof value === "function" - ? textFunction$1(tweenValue(this, "text", value)) - : textConstant$1(value == null ? "" : value + "")); + ? textFunction(tweenValue(this, "text", value)) + : textConstant(value == null ? "" : value + "")); } function textInterpolate(i) { @@ -3965,7 +4578,7 @@ function transition_transition() { for (var groups = this._groups, m = groups.length, j = 0; j < m; ++j) { for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) { if (node = group[i]) { - var inherit = get$1(node, id0); + var inherit = get(node, id0); schedule(node, name, id1, i, group, { time: inherit.time + inherit.delay + inherit.duration, delay: 0, @@ -3986,7 +4599,7 @@ function transition_end() { end = {value: function() { if (--size === 0) resolve(); }}; that.each(function() { - var schedule = set$1(this, id), + var schedule = set(this, id), on = schedule.on; // If this node shared a dispatch with the previous node, @@ -4001,6 +4614,9 @@ function transition_end() { schedule.on = on1; }); + + // The selection was empty, resolve end immediately + if (size === 0) resolve(); }); } @@ -4049,12 +4665,12 @@ Transition.prototype = transition.prototype = { delay: transition_delay, duration: transition_duration, ease: transition_ease, - end: transition_end + easeVarying: transition_easeVarying, + end: transition_end, + [Symbol.iterator]: selection_prototype[Symbol.iterator] }; -function linear$1(t) { - return +t; -} +const linear$1 = t => +t; function quadIn(t) { return t * t; @@ -4080,7 +4696,7 @@ function cubicInOut(t) { return ((t *= 2) <= 1 ? t * t * t : (t -= 2) * t * t + 2) / 2; } -var exponent = 3; +var exponent$1 = 3; var polyIn = (function custom(e) { e = +e; @@ -4092,7 +4708,7 @@ var polyIn = (function custom(e) { polyIn.exponent = custom; return polyIn; -})(exponent); +})(exponent$1); var polyOut = (function custom(e) { e = +e; @@ -4104,7 +4720,7 @@ var polyOut = (function custom(e) { polyOut.exponent = custom; return polyOut; -})(exponent); +})(exponent$1); var polyInOut = (function custom(e) { e = +e; @@ -4116,33 +4732,38 @@ var polyInOut = (function custom(e) { polyInOut.exponent = custom; return polyInOut; -})(exponent); +})(exponent$1); -var pi = Math.PI, - halfPi = pi / 2; +var pi$4 = Math.PI, + halfPi$3 = pi$4 / 2; function sinIn(t) { - return 1 - Math.cos(t * halfPi); + return (+t === 1) ? 1 : 1 - Math.cos(t * halfPi$3); } function sinOut(t) { - return Math.sin(t * halfPi); + return Math.sin(t * halfPi$3); } function sinInOut(t) { - return (1 - Math.cos(pi * t)) / 2; + return (1 - Math.cos(pi$4 * t)) / 2; +} + +// tpmt is two power minus ten times t scaled to [0,1] +function tpmt(x) { + return (Math.pow(2, -10 * x) - 0.0009765625) * 1.0009775171065494; } function expIn(t) { - return Math.pow(2, 10 * t - 10); + return tpmt(1 - +t); } function expOut(t) { - return 1 - Math.pow(2, -10 * t); + return 1 - tpmt(t); } function expInOut(t) { - return ((t *= 2) <= 1 ? Math.pow(2, 10 * t - 10) : 2 - Math.pow(2, 10 - 10 * t)) / 2; + return ((t *= 2) <= 1 ? tpmt(1 - t) : 2 - tpmt(t - 1)) / 2; } function circleIn(t) { @@ -4186,7 +4807,7 @@ var backIn = (function custom(s) { s = +s; function backIn(t) { - return t * t * ((s + 1) * t - s); + return (t = +t) * t * (s * (t - 1) + t); } backIn.overshoot = custom; @@ -4198,7 +4819,7 @@ var backOut = (function custom(s) { s = +s; function backOut(t) { - return --t * t * ((s + 1) * t + s) + 1; + return --t * t * ((t + 1) * s + t) + 1; } backOut.overshoot = custom; @@ -4218,46 +4839,46 @@ var backInOut = (function custom(s) { return backInOut; })(overshoot); -var tau = 2 * Math.PI, +var tau$5 = 2 * Math.PI, amplitude = 1, period = 0.3; var elasticIn = (function custom(a, p) { - var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau); + var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau$5); function elasticIn(t) { - return a * Math.pow(2, 10 * --t) * Math.sin((s - t) / p); + return a * tpmt(-(--t)) * Math.sin((s - t) / p); } - elasticIn.amplitude = function(a) { return custom(a, p * tau); }; + elasticIn.amplitude = function(a) { return custom(a, p * tau$5); }; elasticIn.period = function(p) { return custom(a, p); }; return elasticIn; })(amplitude, period); var elasticOut = (function custom(a, p) { - var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau); + var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau$5); function elasticOut(t) { - return 1 - a * Math.pow(2, -10 * (t = +t)) * Math.sin((t + s) / p); + return 1 - a * tpmt(t = +t) * Math.sin((t + s) / p); } - elasticOut.amplitude = function(a) { return custom(a, p * tau); }; + elasticOut.amplitude = function(a) { return custom(a, p * tau$5); }; elasticOut.period = function(p) { return custom(a, p); }; return elasticOut; })(amplitude, period); var elasticInOut = (function custom(a, p) { - var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau); + var s = Math.asin(1 / (a = Math.max(1, a))) * (p /= tau$5); function elasticInOut(t) { return ((t = t * 2 - 1) < 0 - ? a * Math.pow(2, 10 * t) * Math.sin((s - t) / p) - : 2 - a * Math.pow(2, -10 * t) * Math.sin((s + t) / p)) / 2; + ? a * tpmt(-t) * Math.sin((s - t) / p) + : 2 - a * tpmt(t) * Math.sin((s + t) / p)) / 2; } - elasticInOut.amplitude = function(a) { return custom(a, p * tau); }; + elasticInOut.amplitude = function(a) { return custom(a, p * tau$5); }; elasticInOut.period = function(p) { return custom(a, p); }; return elasticInOut; @@ -4274,7 +4895,7 @@ function inherit(node, id) { var timing; while (!(timing = node.__transition) || !(timing = timing[id])) { if (!(node = node.parentNode)) { - return defaultTiming.time = now(), defaultTiming; + throw new Error(`transition ${id} not found`); } } return timing; @@ -4304,7 +4925,7 @@ function selection_transition(name) { selection.prototype.interrupt = selection_interrupt; selection.prototype.transition = selection_transition; -var root$1 = [null]; +var root = [null]; function active(node, name) { var schedules = node.__transition, @@ -4315,7 +4936,7 @@ function active(node, name) { name = name == null ? null : name + ""; for (i in schedules) { if ((schedule = schedules[i]).state > SCHEDULED && schedule.name === name) { - return new Transition([[node]], root$1, name, +i); + return new Transition([[node]], root, name, +i); } } } @@ -4323,25 +4944,32 @@ function active(node, name) { return null; } -function constant$4(x) { - return function() { - return x; - }; -} - -function BrushEvent(target, type, selection) { - this.target = target; - this.type = type; - this.selection = selection; +var constant$7 = x => () => x; + +function BrushEvent(type, { + sourceEvent, + target, + selection, + mode, + dispatch +}) { + Object.defineProperties(this, { + type: {value: type, enumerable: true, configurable: true}, + sourceEvent: {value: sourceEvent, enumerable: true, configurable: true}, + target: {value: target, enumerable: true, configurable: true}, + selection: {value: selection, enumerable: true, configurable: true}, + mode: {value: mode, enumerable: true, configurable: true}, + _: {value: dispatch} + }); } -function nopropagation$1() { - exports.event.stopImmediatePropagation(); +function nopropagation$1(event) { + event.stopImmediatePropagation(); } -function noevent$1() { - exports.event.preventDefault(); - exports.event.stopImmediatePropagation(); +function noevent$1(event) { + event.preventDefault(); + event.stopImmediatePropagation(); } var MODE_DRAG = {name: "drag"}, @@ -4349,6 +4977,8 @@ var MODE_DRAG = {name: "drag"}, MODE_HANDLE = {name: "handle"}, MODE_CENTER = {name: "center"}; +const {abs: abs$3, max: max$2, min: min$1} = Math; + function number1(e) { return [+e[0], +e[1]]; } @@ -4357,12 +4987,6 @@ function number2(e) { return [number1(e[0]), number1(e[1])]; } -function toucher(identifier) { - return function(target) { - return touch(target, exports.event.touches, identifier); - }; -} - var X = { name: "x", handles: ["w", "e"].map(type), @@ -4446,11 +5070,11 @@ function type(t) { } // Ignore right-click, since that should open the context menu. -function defaultFilter$1() { - return !exports.event.ctrlKey && !exports.event.button; +function defaultFilter$1(event) { + return !event.ctrlKey && !event.button; } -function defaultExtent() { +function defaultExtent$1() { var svg = this.ownerSVGElement || this; if (svg.hasAttribute("viewBox")) { svg = svg.viewBox.baseVal; @@ -4464,12 +5088,12 @@ function defaultTouchable$1() { } // Like d3.local, but with the name “__brush” rather than auto-generated. -function local$1(node) { +function local(node) { while (!node.__brush) if (!(node = node.parentNode)) return; return node.__brush; } -function empty$1(extent) { +function empty(extent) { return extent[0][0] === extent[1][0] || extent[0][1] === extent[1][1]; } @@ -4492,7 +5116,7 @@ function brush() { } function brush$1(dim) { - var extent = defaultExtent, + var extent = defaultExtent$1, filter = defaultFilter$1, touchable = defaultTouchable$1, keys = true, @@ -4512,7 +5136,7 @@ function brush$1(dim) { .attr("cursor", cursors.overlay) .merge(overlay) .each(function() { - var extent = local$1(this).extent; + var extent = local(this).extent; select(this) .attr("x", extent[0][0]) .attr("y", extent[0][1]) @@ -4553,17 +5177,17 @@ function brush$1(dim) { } brush.move = function(group, selection) { - if (group.selection) { + if (group.tween) { group - .on("start.brush", function() { emitter(this, arguments).beforestart().start(); }) - .on("interrupt.brush end.brush", function() { emitter(this, arguments).end(); }) + .on("start.brush", function(event) { emitter(this, arguments).beforestart().start(event); }) + .on("interrupt.brush end.brush", function(event) { emitter(this, arguments).end(event); }) .tween("brush", function() { var that = this, state = that.__brush, emit = emitter(that, arguments), selection0 = state.selection, selection1 = dim.input(typeof selection === "function" ? selection.apply(this, arguments) : selection, state.extent), - i = interpolateValue(selection0, selection1); + i = interpolate$2(selection0, selection1); function tween(t) { state.selection = t === 1 && selection1 === null ? null : i(t); @@ -4596,7 +5220,7 @@ function brush$1(dim) { function redraw() { var group = select(this), - selection = local$1(this).selection; + selection = local(this).selection; if (selection) { group.selectAll(".selection") @@ -4625,14 +5249,16 @@ function brush$1(dim) { } function emitter(that, args, clean) { - return (!clean && that.__brush.emitter) || new Emitter(that, args); + var emit = that.__brush.emitter; + return emit && (!clean || !emit.clean) ? emit : new Emitter(that, args, clean); } - function Emitter(that, args) { + function Emitter(that, args, clean) { this.that = that; this.args = args; this.state = that.__brush; this.active = 0; + this.clean = clean; } Emitter.prototype = { @@ -4640,34 +5266,46 @@ function brush$1(dim) { if (++this.active === 1) this.state.emitter = this, this.starting = true; return this; }, - start: function() { - if (this.starting) this.starting = false, this.emit("start"); - else this.emit("brush"); + start: function(event, mode) { + if (this.starting) this.starting = false, this.emit("start", event, mode); + else this.emit("brush", event); return this; }, - brush: function() { - this.emit("brush"); + brush: function(event, mode) { + this.emit("brush", event, mode); return this; }, - end: function() { - if (--this.active === 0) delete this.state.emitter, this.emit("end"); + end: function(event, mode) { + if (--this.active === 0) delete this.state.emitter, this.emit("end", event, mode); return this; }, - emit: function(type) { - customEvent(new BrushEvent(brush, type, dim.output(this.state.selection)), listeners.apply, listeners, [type, this.that, this.args]); + emit: function(type, event, mode) { + var d = select(this.that).datum(); + listeners.call( + type, + this.that, + new BrushEvent(type, { + sourceEvent: event, + target: brush, + selection: dim.output(this.state.selection), + mode, + dispatch: listeners + }), + d + ); } }; - function started() { - if (touchending && !exports.event.touches) return; + function started(event) { + if (touchending && !event.touches) return; if (!filter.apply(this, arguments)) return; var that = this, - type = exports.event.target.__data__.type, - mode = (keys && exports.event.metaKey ? type = "overlay" : type) === "selection" ? MODE_DRAG : (keys && exports.event.altKey ? MODE_CENTER : MODE_HANDLE), + type = event.target.__data__.type, + mode = (keys && event.metaKey ? type = "overlay" : type) === "selection" ? MODE_DRAG : (keys && event.altKey ? MODE_CENTER : MODE_HANDLE), signX = dim === Y ? null : signsX[type], signY = dim === X ? null : signsY[type], - state = local$1(that), + state = local(that), extent = state.extent, selection = state.selection, W = extent[0][0], w0, w1, @@ -4677,20 +5315,28 @@ function brush$1(dim) { dx = 0, dy = 0, moving, - shifting = signX && signY && keys && exports.event.shiftKey, + shifting = signX && signY && keys && event.shiftKey, lockX, lockY, - pointer = exports.event.touches ? toucher(exports.event.changedTouches[0].identifier) : mouse, - point0 = pointer(that), - point = point0, - emit = emitter(that, arguments, true).beforestart(); + points = Array.from(event.touches || [event], t => { + const i = t.identifier; + t = pointer(t, that); + t.point0 = t.slice(); + t.identifier = i; + return t; + }); if (type === "overlay") { if (selection) moving = true; - state.selection = selection = [ - [w0 = dim === Y ? W : point0[0], n0 = dim === X ? N : point0[1]], - [e0 = dim === Y ? E : w0, s0 = dim === X ? S : n0] - ]; + const pts = [points[0], points[1] || points[0]]; + state.selection = selection = [[ + w0 = dim === Y ? W : min$1(pts[0][0], pts[1][0]), + n0 = dim === X ? N : min$1(pts[0][1], pts[1][1]) + ], [ + e0 = dim === Y ? E : max$2(pts[0][0], pts[1][0]), + s0 = dim === X ? S : max$2(pts[0][1], pts[1][1]) + ]]; + if (points.length > 1) move(); } else { w0 = selection[0][0]; n0 = selection[0][1]; @@ -4709,38 +5355,47 @@ function brush$1(dim) { var overlay = group.selectAll(".overlay") .attr("cursor", cursors[type]); - if (exports.event.touches) { + interrupt(that); + var emit = emitter(that, arguments, true).beforestart(); + + if (event.touches) { emit.moved = moved; emit.ended = ended; } else { - var view = select(exports.event.view) + var view = select(event.view) .on("mousemove.brush", moved, true) .on("mouseup.brush", ended, true); if (keys) view .on("keydown.brush", keydowned, true) .on("keyup.brush", keyupped, true); - dragDisable(exports.event.view); + dragDisable(event.view); } - nopropagation$1(); - interrupt(that); redraw.call(that); - emit.start(); + emit.start(event, mode.name); - function moved() { - var point1 = pointer(that); - if (shifting && !lockX && !lockY) { - if (Math.abs(point1[0] - point[0]) > Math.abs(point1[1] - point[1])) lockY = true; - else lockX = true; + function moved(event) { + for (const p of event.changedTouches || [event]) { + for (const d of points) + if (d.identifier === p.identifier) d.cur = pointer(p, that); } - point = point1; + if (shifting && !lockX && !lockY && points.length === 1) { + const point = points[0]; + if (abs$3(point.cur[0] - point[0]) > abs$3(point.cur[1] - point[1])) + lockY = true; + else + lockX = true; + } + for (const point of points) + if (point.cur) point[0] = point.cur[0], point[1] = point.cur[1]; moving = true; - noevent$1(); - move(); + noevent$1(event); + move(event); } - function move() { + function move(event) { + const point = points[0], point0 = point.point0; var t; dx = point[0] - point0[0]; @@ -4749,20 +5404,25 @@ function brush$1(dim) { switch (mode) { case MODE_SPACE: case MODE_DRAG: { - if (signX) dx = Math.max(W - w0, Math.min(E - e0, dx)), w1 = w0 + dx, e1 = e0 + dx; - if (signY) dy = Math.max(N - n0, Math.min(S - s0, dy)), n1 = n0 + dy, s1 = s0 + dy; + if (signX) dx = max$2(W - w0, min$1(E - e0, dx)), w1 = w0 + dx, e1 = e0 + dx; + if (signY) dy = max$2(N - n0, min$1(S - s0, dy)), n1 = n0 + dy, s1 = s0 + dy; break; } case MODE_HANDLE: { - if (signX < 0) dx = Math.max(W - w0, Math.min(E - w0, dx)), w1 = w0 + dx, e1 = e0; - else if (signX > 0) dx = Math.max(W - e0, Math.min(E - e0, dx)), w1 = w0, e1 = e0 + dx; - if (signY < 0) dy = Math.max(N - n0, Math.min(S - n0, dy)), n1 = n0 + dy, s1 = s0; - else if (signY > 0) dy = Math.max(N - s0, Math.min(S - s0, dy)), n1 = n0, s1 = s0 + dy; + if (points[1]) { + if (signX) w1 = max$2(W, min$1(E, points[0][0])), e1 = max$2(W, min$1(E, points[1][0])), signX = 1; + if (signY) n1 = max$2(N, min$1(S, points[0][1])), s1 = max$2(N, min$1(S, points[1][1])), signY = 1; + } else { + if (signX < 0) dx = max$2(W - w0, min$1(E - w0, dx)), w1 = w0 + dx, e1 = e0; + else if (signX > 0) dx = max$2(W - e0, min$1(E - e0, dx)), w1 = w0, e1 = e0 + dx; + if (signY < 0) dy = max$2(N - n0, min$1(S - n0, dy)), n1 = n0 + dy, s1 = s0; + else if (signY > 0) dy = max$2(N - s0, min$1(S - s0, dy)), n1 = n0, s1 = s0 + dy; + } break; } case MODE_CENTER: { - if (signX) w1 = Math.max(W, Math.min(E, w0 - dx * signX)), e1 = Math.max(W, Math.min(E, e0 + dx * signX)); - if (signY) n1 = Math.max(N, Math.min(S, n0 - dy * signY)), s1 = Math.max(N, Math.min(S, s0 + dy * signY)); + if (signX) w1 = max$2(W, min$1(E, w0 - dx * signX)), e1 = max$2(W, min$1(E, e0 + dx * signX)); + if (signY) n1 = max$2(N, min$1(S, n0 - dy * signY)), s1 = max$2(N, min$1(S, s0 + dy * signY)); break; } } @@ -4791,29 +5451,29 @@ function brush$1(dim) { || selection[1][1] !== s1) { state.selection = [[w1, n1], [e1, s1]]; redraw.call(that); - emit.brush(); + emit.brush(event, mode.name); } } - function ended() { - nopropagation$1(); - if (exports.event.touches) { - if (exports.event.touches.length) return; + function ended(event) { + nopropagation$1(event); + if (event.touches) { + if (event.touches.length) return; if (touchending) clearTimeout(touchending); touchending = setTimeout(function() { touchending = null; }, 500); // Ghost clicks are delayed! } else { - yesdrag(exports.event.view, moving); + yesdrag(event.view, moving); view.on("keydown.brush keyup.brush mousemove.brush mouseup.brush", null); } group.attr("pointer-events", "all"); overlay.attr("cursor", cursors.overlay); if (state.selection) selection = state.selection; // May be set by brush.move (on start)! - if (empty$1(selection)) state.selection = null, redraw.call(that); - emit.end(); + if (empty(selection)) state.selection = null, redraw.call(that); + emit.end(event, mode.name); } - function keydowned() { - switch (exports.event.keyCode) { + function keydowned(event) { + switch (event.keyCode) { case 16: { // SHIFT shifting = signX && signY; break; @@ -4839,11 +5499,11 @@ function brush$1(dim) { } default: return; } - noevent$1(); + noevent$1(event); } - function keyupped() { - switch (exports.event.keyCode) { + function keyupped(event) { + switch (event.keyCode) { case 16: { // SHIFT if (shifting) { lockX = lockY = shifting = false; @@ -4862,7 +5522,7 @@ function brush$1(dim) { } case 32: { // SPACE if (mode === MODE_SPACE) { - if (exports.event.altKey) { + if (event.altKey) { if (signX) e0 = e1 - dx * signX, w0 = w1 + dx * signX; if (signY) s0 = s1 - dy * signY, n0 = n1 + dy * signY; mode = MODE_CENTER; @@ -4878,16 +5538,16 @@ function brush$1(dim) { } default: return; } - noevent$1(); + noevent$1(event); } } - function touchmoved() { - emitter(this, arguments).moved(); + function touchmoved(event) { + emitter(this, arguments).moved(event); } - function touchended() { - emitter(this, arguments).ended(); + function touchended(event) { + emitter(this, arguments).ended(event); } function initialize() { @@ -4898,15 +5558,15 @@ function brush$1(dim) { } brush.extent = function(_) { - return arguments.length ? (extent = typeof _ === "function" ? _ : constant$4(number2(_)), brush) : extent; + return arguments.length ? (extent = typeof _ === "function" ? _ : constant$7(number2(_)), brush) : extent; }; brush.filter = function(_) { - return arguments.length ? (filter = typeof _ === "function" ? _ : constant$4(!!_), brush) : filter; + return arguments.length ? (filter = typeof _ === "function" ? _ : constant$7(!!_), brush) : filter; }; brush.touchable = function(_) { - return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$4(!!_), brush) : touchable; + return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$7(!!_), brush) : touchable; }; brush.handleSize = function(_) { @@ -4925,12 +5585,18 @@ function brush$1(dim) { return brush; } -var cos = Math.cos; -var sin = Math.sin; -var pi$1 = Math.PI; -var halfPi$1 = pi$1 / 2; -var tau$1 = pi$1 * 2; +var abs$2 = Math.abs; +var cos$2 = Math.cos; +var sin$2 = Math.sin; +var pi$3 = Math.PI; +var halfPi$2 = pi$3 / 2; +var tau$4 = pi$3 * 2; var max$1 = Math.max; +var epsilon$4 = 1e-12; + +function range$1(i, j) { + return Array.from({length: j - i}, (_, k) => i + k); +} function compareValue(compare) { return function(a, b) { @@ -4942,6 +5608,18 @@ function compareValue(compare) { } function chord() { + return chord$1(false, false); +} + +function chordTranspose() { + return chord$1(false, true); +} + +function chordDirected() { + return chord$1(true, false); +} + +function chord$1(directed, transpose) { var padAngle = 0, sortGroups = null, sortSubgroups = null, @@ -4949,86 +5627,72 @@ function chord() { function chord(matrix) { var n = matrix.length, - groupSums = [], - groupIndex = sequence(n), - subgroupIndex = [], - chords = [], - groups = chords.groups = new Array(n), - subgroups = new Array(n * n), - k, - x, - x0, - dx, - i, - j; - - // Compute the sum. - k = 0, i = -1; while (++i < n) { - x = 0, j = -1; while (++j < n) { - x += matrix[i][j]; - } - groupSums.push(x); - subgroupIndex.push(sequence(n)); - k += x; - } - - // Sort groups… - if (sortGroups) groupIndex.sort(function(a, b) { - return sortGroups(groupSums[a], groupSums[b]); - }); - - // Sort subgroups… - if (sortSubgroups) subgroupIndex.forEach(function(d, i) { - d.sort(function(a, b) { - return sortSubgroups(matrix[i][a], matrix[i][b]); - }); - }); - - // Convert the sum to scaling factor for [0, 2pi]. - // TODO Allow start and end angle to be specified? - // TODO Allow padding to be specified as percentage? - k = max$1(0, tau$1 - padAngle * n) / k; - dx = k ? padAngle : tau$1 / n; - - // Compute the start and end angle for each group and subgroup. - // Note: Opera has a bug reordering object literal properties! - x = 0, i = -1; while (++i < n) { - x0 = x, j = -1; while (++j < n) { - var di = groupIndex[i], - dj = subgroupIndex[di][j], - v = matrix[di][dj], - a0 = x, - a1 = x += v * k; - subgroups[dj * n + di] = { - index: di, - subindex: dj, - startAngle: a0, - endAngle: a1, - value: v - }; - } - groups[di] = { - index: di, - startAngle: x0, - endAngle: x, - value: groupSums[di] - }; - x += dx; - } - - // Generate chords for each (non-empty) subgroup-subgroup link. - i = -1; while (++i < n) { - j = i - 1; while (++j < n) { - var source = subgroups[j * n + i], - target = subgroups[i * n + j]; - if (source.value || target.value) { - chords.push(source.value < target.value - ? {source: target, target: source} - : {source: source, target: target}); + groupSums = new Array(n), + groupIndex = range$1(0, n), + chords = new Array(n * n), + groups = new Array(n), + k = 0, dx; + + matrix = Float64Array.from({length: n * n}, transpose + ? (_, i) => matrix[i % n][i / n | 0] + : (_, i) => matrix[i / n | 0][i % n]); + + // Compute the scaling factor from value to angle in [0, 2pi]. + for (let i = 0; i < n; ++i) { + let x = 0; + for (let j = 0; j < n; ++j) x += matrix[i * n + j] + directed * matrix[j * n + i]; + k += groupSums[i] = x; + } + k = max$1(0, tau$4 - padAngle * n) / k; + dx = k ? padAngle : tau$4 / n; + + // Compute the angles for each group and constituent chord. + { + let x = 0; + if (sortGroups) groupIndex.sort((a, b) => sortGroups(groupSums[a], groupSums[b])); + for (const i of groupIndex) { + const x0 = x; + if (directed) { + const subgroupIndex = range$1(~n + 1, n).filter(j => j < 0 ? matrix[~j * n + i] : matrix[i * n + j]); + if (sortSubgroups) subgroupIndex.sort((a, b) => sortSubgroups(a < 0 ? -matrix[~a * n + i] : matrix[i * n + a], b < 0 ? -matrix[~b * n + i] : matrix[i * n + b])); + for (const j of subgroupIndex) { + if (j < 0) { + const chord = chords[~j * n + i] || (chords[~j * n + i] = {source: null, target: null}); + chord.target = {index: i, startAngle: x, endAngle: x += matrix[~j * n + i] * k, value: matrix[~j * n + i]}; + } else { + const chord = chords[i * n + j] || (chords[i * n + j] = {source: null, target: null}); + chord.source = {index: i, startAngle: x, endAngle: x += matrix[i * n + j] * k, value: matrix[i * n + j]}; + } + } + groups[i] = {index: i, startAngle: x0, endAngle: x, value: groupSums[i]}; + } else { + const subgroupIndex = range$1(0, n).filter(j => matrix[i * n + j] || matrix[j * n + i]); + if (sortSubgroups) subgroupIndex.sort((a, b) => sortSubgroups(matrix[i * n + a], matrix[i * n + b])); + for (const j of subgroupIndex) { + let chord; + if (i < j) { + chord = chords[i * n + j] || (chords[i * n + j] = {source: null, target: null}); + chord.source = {index: i, startAngle: x, endAngle: x += matrix[i * n + j] * k, value: matrix[i * n + j]}; + } else { + chord = chords[j * n + i] || (chords[j * n + i] = {source: null, target: null}); + chord.target = {index: i, startAngle: x, endAngle: x += matrix[i * n + j] * k, value: matrix[i * n + j]}; + if (i === j) chord.source = chord.target; + } + if (chord.source && chord.target && chord.source.value < chord.target.value) { + const source = chord.source; + chord.source = chord.target; + chord.target = source; + } + } + groups[i] = {index: i, startAngle: x0, endAngle: x, value: groupSums[i]}; } + x += dx; } } + // Remove empty chords. + chords = Object.values(chords); + chords.groups = groups; return sortChords ? chords.sort(sortChords) : chords; } @@ -5051,31 +5715,23 @@ function chord() { return chord; } -var slice$2 = Array.prototype.slice; - -function constant$5(x) { - return function() { - return x; - }; -} - -var pi$2 = Math.PI, - tau$2 = 2 * pi$2, - epsilon$1 = 1e-6, - tauEpsilon = tau$2 - epsilon$1; +const pi$2 = Math.PI, + tau$3 = 2 * pi$2, + epsilon$3 = 1e-6, + tauEpsilon = tau$3 - epsilon$3; -function Path() { +function Path$1() { this._x0 = this._y0 = // start of current subpath this._x1 = this._y1 = null; // end of current subpath this._ = ""; } function path() { - return new Path; + return new Path$1; } -Path.prototype = path.prototype = { - constructor: Path, +Path$1.prototype = path.prototype = { + constructor: Path$1, moveTo: function(x, y) { this._ += "M" + (this._x0 = this._x1 = +x) + "," + (this._y0 = this._y1 = +y); }, @@ -5113,12 +5769,12 @@ Path.prototype = path.prototype = { } // Or, is (x1,y1) coincident with (x0,y0)? Do nothing. - else if (!(l01_2 > epsilon$1)); + else if (!(l01_2 > epsilon$3)); // Or, are (x0,y0), (x1,y1) and (x2,y2) collinear? // Equivalently, is (x1,y1) coincident with (x2,y2)? // Or, is the radius zero? Line to (x1,y1). - else if (!(Math.abs(y01 * x21 - y21 * x01) > epsilon$1) || !r) { + else if (!(Math.abs(y01 * x21 - y21 * x01) > epsilon$3) || !r) { this._ += "L" + (this._x1 = x1) + "," + (this._y1 = y1); } @@ -5135,7 +5791,7 @@ Path.prototype = path.prototype = { t21 = l / l21; // If the start tangent is not coincident with (x0,y0), line to. - if (Math.abs(t01 - 1) > epsilon$1) { + if (Math.abs(t01 - 1) > epsilon$3) { this._ += "L" + (x1 + t01 * x01) + "," + (y1 + t01 * y01); } @@ -5160,7 +5816,7 @@ Path.prototype = path.prototype = { } // Or, is (x0,y0) not coincident with the previous point? Line to (x0,y0). - else if (Math.abs(this._x1 - x0) > epsilon$1 || Math.abs(this._y1 - y0) > epsilon$1) { + else if (Math.abs(this._x1 - x0) > epsilon$3 || Math.abs(this._y1 - y0) > epsilon$3) { this._ += "L" + x0 + "," + y0; } @@ -5168,7 +5824,7 @@ Path.prototype = path.prototype = { if (!r) return; // Does the angle go the wrong way? Flip the direction. - if (da < 0) da = da % tau$2 + tau$2; + if (da < 0) da = da % tau$3 + tau$3; // Is this a complete circle? Draw two arcs to complete the circle. if (da > tauEpsilon) { @@ -5176,7 +5832,7 @@ Path.prototype = path.prototype = { } // Is this arc non-empty? Draw an arc! - else if (da > epsilon$1) { + else if (da > epsilon$3) { this._ += "A" + r + "," + r + ",0," + (+(da >= pi$2)) + "," + cw + "," + (this._x1 = x + r * Math.cos(a1)) + "," + (this._y1 = y + r * Math.sin(a1)); } }, @@ -5188,7 +5844,15 @@ Path.prototype = path.prototype = { } }; -function defaultSource(d) { +var slice$2 = Array.prototype.slice; + +function constant$6(x) { + return function() { + return x; + }; +} + +function defaultSource$1(d) { return d.source; } @@ -5196,7 +5860,7 @@ function defaultTarget(d) { return d.target; } -function defaultRadius(d) { +function defaultRadius$1(d) { return d.radius; } @@ -5208,52 +5872,91 @@ function defaultEndAngle(d) { return d.endAngle; } -function ribbon() { - var source = defaultSource, +function defaultPadAngle() { + return 0; +} + +function defaultArrowheadRadius() { + return 10; +} + +function ribbon(headRadius) { + var source = defaultSource$1, target = defaultTarget, - radius = defaultRadius, + sourceRadius = defaultRadius$1, + targetRadius = defaultRadius$1, startAngle = defaultStartAngle, endAngle = defaultEndAngle, + padAngle = defaultPadAngle, context = null; function ribbon() { var buffer, + s = source.apply(this, arguments), + t = target.apply(this, arguments), + ap = padAngle.apply(this, arguments) / 2, argv = slice$2.call(arguments), - s = source.apply(this, argv), - t = target.apply(this, argv), - sr = +radius.apply(this, (argv[0] = s, argv)), - sa0 = startAngle.apply(this, argv) - halfPi$1, - sa1 = endAngle.apply(this, argv) - halfPi$1, - sx0 = sr * cos(sa0), - sy0 = sr * sin(sa0), - tr = +radius.apply(this, (argv[0] = t, argv)), - ta0 = startAngle.apply(this, argv) - halfPi$1, - ta1 = endAngle.apply(this, argv) - halfPi$1; + sr = +sourceRadius.apply(this, (argv[0] = s, argv)), + sa0 = startAngle.apply(this, argv) - halfPi$2, + sa1 = endAngle.apply(this, argv) - halfPi$2, + tr = +targetRadius.apply(this, (argv[0] = t, argv)), + ta0 = startAngle.apply(this, argv) - halfPi$2, + ta1 = endAngle.apply(this, argv) - halfPi$2; if (!context) context = buffer = path(); - context.moveTo(sx0, sy0); + if (ap > epsilon$4) { + if (abs$2(sa1 - sa0) > ap * 2 + epsilon$4) sa1 > sa0 ? (sa0 += ap, sa1 -= ap) : (sa0 -= ap, sa1 += ap); + else sa0 = sa1 = (sa0 + sa1) / 2; + if (abs$2(ta1 - ta0) > ap * 2 + epsilon$4) ta1 > ta0 ? (ta0 += ap, ta1 -= ap) : (ta0 -= ap, ta1 += ap); + else ta0 = ta1 = (ta0 + ta1) / 2; + } + + context.moveTo(sr * cos$2(sa0), sr * sin$2(sa0)); context.arc(0, 0, sr, sa0, sa1); - if (sa0 !== ta0 || sa1 !== ta1) { // TODO sr !== tr? - context.quadraticCurveTo(0, 0, tr * cos(ta0), tr * sin(ta0)); - context.arc(0, 0, tr, ta0, ta1); + if (sa0 !== ta0 || sa1 !== ta1) { + if (headRadius) { + var hr = +headRadius.apply(this, arguments), tr2 = tr - hr, ta2 = (ta0 + ta1) / 2; + context.quadraticCurveTo(0, 0, tr2 * cos$2(ta0), tr2 * sin$2(ta0)); + context.lineTo(tr * cos$2(ta2), tr * sin$2(ta2)); + context.lineTo(tr2 * cos$2(ta1), tr2 * sin$2(ta1)); + } else { + context.quadraticCurveTo(0, 0, tr * cos$2(ta0), tr * sin$2(ta0)); + context.arc(0, 0, tr, ta0, ta1); + } } - context.quadraticCurveTo(0, 0, sx0, sy0); + context.quadraticCurveTo(0, 0, sr * cos$2(sa0), sr * sin$2(sa0)); context.closePath(); if (buffer) return context = null, buffer + "" || null; } + if (headRadius) ribbon.headRadius = function(_) { + return arguments.length ? (headRadius = typeof _ === "function" ? _ : constant$6(+_), ribbon) : headRadius; + }; + ribbon.radius = function(_) { - return arguments.length ? (radius = typeof _ === "function" ? _ : constant$5(+_), ribbon) : radius; + return arguments.length ? (sourceRadius = targetRadius = typeof _ === "function" ? _ : constant$6(+_), ribbon) : sourceRadius; + }; + + ribbon.sourceRadius = function(_) { + return arguments.length ? (sourceRadius = typeof _ === "function" ? _ : constant$6(+_), ribbon) : sourceRadius; + }; + + ribbon.targetRadius = function(_) { + return arguments.length ? (targetRadius = typeof _ === "function" ? _ : constant$6(+_), ribbon) : targetRadius; }; ribbon.startAngle = function(_) { - return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$5(+_), ribbon) : startAngle; + return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$6(+_), ribbon) : startAngle; }; ribbon.endAngle = function(_) { - return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$5(+_), ribbon) : endAngle; + return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$6(+_), ribbon) : endAngle; + }; + + ribbon.padAngle = function(_) { + return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant$6(+_), ribbon) : padAngle; }; ribbon.source = function(_) { @@ -5271,227 +5974,31 @@ function ribbon() { return ribbon; } -var prefix = "$"; - -function Map() {} - -Map.prototype = map$1.prototype = { - constructor: Map, - has: function(key) { - return (prefix + key) in this; - }, - get: function(key) { - return this[prefix + key]; - }, - set: function(key, value) { - this[prefix + key] = value; - return this; - }, - remove: function(key) { - var property = prefix + key; - return property in this && delete this[property]; - }, - clear: function() { - for (var property in this) if (property[0] === prefix) delete this[property]; - }, - keys: function() { - var keys = []; - for (var property in this) if (property[0] === prefix) keys.push(property.slice(1)); - return keys; - }, - values: function() { - var values = []; - for (var property in this) if (property[0] === prefix) values.push(this[property]); - return values; - }, - entries: function() { - var entries = []; - for (var property in this) if (property[0] === prefix) entries.push({key: property.slice(1), value: this[property]}); - return entries; - }, - size: function() { - var size = 0; - for (var property in this) if (property[0] === prefix) ++size; - return size; - }, - empty: function() { - for (var property in this) if (property[0] === prefix) return false; - return true; - }, - each: function(f) { - for (var property in this) if (property[0] === prefix) f(this[property], property.slice(1), this); - } -}; - -function map$1(object, f) { - var map = new Map; - - // Copy constructor. - if (object instanceof Map) object.each(function(value, key) { map.set(key, value); }); - - // Index array by numeric index or specified key function. - else if (Array.isArray(object)) { - var i = -1, - n = object.length, - o; - - if (f == null) while (++i < n) map.set(i, object[i]); - else while (++i < n) map.set(f(o = object[i], i, object), o); - } - - // Convert object to map. - else if (object) for (var key in object) map.set(key, object[key]); - - return map; -} - -function nest() { - var keys = [], - sortKeys = [], - sortValues, - rollup, - nest; - - function apply(array, depth, createResult, setResult) { - if (depth >= keys.length) { - if (sortValues != null) array.sort(sortValues); - return rollup != null ? rollup(array) : array; - } - - var i = -1, - n = array.length, - key = keys[depth++], - keyValue, - value, - valuesByKey = map$1(), - values, - result = createResult(); - - while (++i < n) { - if (values = valuesByKey.get(keyValue = key(value = array[i]) + "")) { - values.push(value); - } else { - valuesByKey.set(keyValue, [value]); - } - } - - valuesByKey.each(function(values, key) { - setResult(result, key, apply(values, depth, createResult, setResult)); - }); - - return result; - } - - function entries(map, depth) { - if (++depth > keys.length) return map; - var array, sortKey = sortKeys[depth - 1]; - if (rollup != null && depth >= keys.length) array = map.entries(); - else array = [], map.each(function(v, k) { array.push({key: k, values: entries(v, depth)}); }); - return sortKey != null ? array.sort(function(a, b) { return sortKey(a.key, b.key); }) : array; - } - - return nest = { - object: function(array) { return apply(array, 0, createObject, setObject); }, - map: function(array) { return apply(array, 0, createMap, setMap); }, - entries: function(array) { return entries(apply(array, 0, createMap, setMap), 0); }, - key: function(d) { keys.push(d); return nest; }, - sortKeys: function(order) { sortKeys[keys.length - 1] = order; return nest; }, - sortValues: function(order) { sortValues = order; return nest; }, - rollup: function(f) { rollup = f; return nest; } - }; -} - -function createObject() { - return {}; -} - -function setObject(object, key, value) { - object[key] = value; -} - -function createMap() { - return map$1(); -} - -function setMap(map, key, value) { - map.set(key, value); -} - -function Set() {} - -var proto = map$1.prototype; - -Set.prototype = set$2.prototype = { - constructor: Set, - has: proto.has, - add: function(value) { - value += ""; - this[prefix + value] = value; - return this; - }, - remove: proto.remove, - clear: proto.clear, - values: proto.keys, - size: proto.size, - empty: proto.empty, - each: proto.each -}; - -function set$2(object, f) { - var set = new Set; - - // Copy constructor. - if (object instanceof Set) object.each(function(value) { set.add(value); }); - - // Otherwise, assume it’s an array. - else if (object) { - var i = -1, n = object.length; - if (f == null) while (++i < n) set.add(object[i]); - else while (++i < n) set.add(f(object[i], i, object)); - } - - return set; -} - -function keys(map) { - var keys = []; - for (var key in map) keys.push(key); - return keys; +function ribbon$1() { + return ribbon(); } -function values(map) { - var values = []; - for (var key in map) values.push(map[key]); - return values; -} - -function entries(map) { - var entries = []; - for (var key in map) entries.push({key: key, value: map[key]}); - return entries; +function ribbonArrow() { + return ribbon(defaultArrowheadRadius); } var array$2 = Array.prototype; -var slice$3 = array$2.slice; +var slice$1 = array$2.slice; -function ascending$2(a, b) { +function ascending$1(a, b) { return a - b; } -function area(ring) { +function area$3(ring) { var i = 0, n = ring.length, area = ring[n - 1][1] * ring[0][0] - ring[n - 1][0] * ring[0][1]; while (++i < n) area += ring[i - 1][1] * ring[i][0] - ring[i - 1][0] * ring[i][1]; return area; } -function constant$6(x) { - return function() { - return x; - }; -} +var constant$5 = x => () => x; -function contains(ring, hole) { +function contains$2(ring, hole) { var i = -1, n = hole.length, c; while (++i < n) if (c = ringContains(ring, hole[i])) return c; return 0; @@ -5508,10 +6015,10 @@ function ringContains(ring, point) { } function segmentContains(a, b, c) { - var i; return collinear(a, b, c) && within(a[i = +(a[0] === b[0])], c[i], b[i]); + var i; return collinear$1(a, b, c) && within(a[i = +(a[0] === b[0])], c[i], b[i]); } -function collinear(a, b, c) { +function collinear$1(a, b, c) { return (b[0] - a[0]) * (c[1] - a[1]) === (c[0] - a[0]) * (b[1] - a[1]); } @@ -5519,7 +6026,7 @@ function within(p, q, r) { return p <= q && q <= r || r <= q && q <= p; } -function noop$1() {} +function noop$2() {} var cases = [ [], @@ -5551,11 +6058,11 @@ function contours() { // Convert number of thresholds into uniform thresholds. if (!Array.isArray(tz)) { - var domain = extent(values), start = domain[0], stop = domain[1]; + var domain = extent$1(values), start = domain[0], stop = domain[1]; tz = tickStep(start, stop, tz); tz = sequence(Math.floor(start / tz) * tz, Math.floor(stop / tz) * tz, tz); } else { - tz = tz.slice().sort(ascending$2); + tz = tz.slice().sort(ascending$1); } return tz.map(function(value) { @@ -5571,13 +6078,13 @@ function contours() { isorings(values, value, function(ring) { smooth(ring, values, value); - if (area(ring) > 0) polygons.push([ring]); + if (area$3(ring) > 0) polygons.push([ring]); else holes.push(ring); }); holes.forEach(function(hole) { for (var i = 0, n = polygons.length, polygon; i < n; ++i) { - if (contains((polygon = polygons[i])[0], hole) !== -1) { + if (contains$2((polygon = polygons[i])[0], hole) !== -1) { polygon.push(hole); return; } @@ -5701,17 +6208,17 @@ function contours() { contours.size = function(_) { if (!arguments.length) return [dx, dy]; - var _0 = Math.ceil(_[0]), _1 = Math.ceil(_[1]); - if (!(_0 > 0) || !(_1 > 0)) throw new Error("invalid size"); + var _0 = Math.floor(_[0]), _1 = Math.floor(_[1]); + if (!(_0 >= 0 && _1 >= 0)) throw new Error("invalid size"); return dx = _0, dy = _1, contours; }; contours.thresholds = function(_) { - return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant$6(slice$3.call(_)) : constant$6(_), contours) : threshold; + return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant$5(slice$1.call(_)) : constant$5(_), contours) : threshold; }; contours.smooth = function(_) { - return arguments.length ? (smooth = _ ? smoothLinear : noop$1, contours) : smooth === smoothLinear; + return arguments.length ? (smooth = _ ? smoothLinear : noop$2, contours) : smooth === smoothLinear; }; return contours; @@ -5761,11 +6268,11 @@ function blurY(source, target, r) { } } -function defaultX(d) { +function defaultX$1(d) { return d[0]; } -function defaultY(d) { +function defaultY$1(d) { return d[1]; } @@ -5774,8 +6281,8 @@ function defaultWeight() { } function density() { - var x = defaultX, - y = defaultY, + var x = defaultX$1, + y = defaultY$1, weight = defaultWeight, dx = 960, dy = 500, @@ -5784,7 +6291,7 @@ function density() { o = r * 3, // grid offset, to pad for blur n = (dx + o * 2) >> k, // grid width m = (dy + o * 2) >> k, // grid height - threshold = constant$6(20); + threshold = constant$5(20); function density(data) { var values0 = new Float32Array(n * m), @@ -5811,7 +6318,7 @@ function density() { // Convert number of thresholds into uniform thresholds. if (!Array.isArray(tz)) { - var stop = max(values0); + var stop = max$3(values0); tz = tickStep(0, stop, tz); tz = sequence(0, Math.floor(stop / tz) * tz, tz); tz.shift(); @@ -5852,21 +6359,21 @@ function density() { } density.x = function(_) { - return arguments.length ? (x = typeof _ === "function" ? _ : constant$6(+_), density) : x; + return arguments.length ? (x = typeof _ === "function" ? _ : constant$5(+_), density) : x; }; density.y = function(_) { - return arguments.length ? (y = typeof _ === "function" ? _ : constant$6(+_), density) : y; + return arguments.length ? (y = typeof _ === "function" ? _ : constant$5(+_), density) : y; }; density.weight = function(_) { - return arguments.length ? (weight = typeof _ === "function" ? _ : constant$6(+_), density) : weight; + return arguments.length ? (weight = typeof _ === "function" ? _ : constant$5(+_), density) : weight; }; density.size = function(_) { if (!arguments.length) return [dx, dy]; - var _0 = Math.ceil(_[0]), _1 = Math.ceil(_[1]); - if (!(_0 >= 0) && !(_0 >= 0)) throw new Error("invalid size"); + var _0 = +_[0], _1 = +_[1]; + if (!(_0 >= 0 && _1 >= 0)) throw new Error("invalid size"); return dx = _0, dy = _1, resize(); }; @@ -5877,7 +6384,7 @@ function density() { }; density.thresholds = function(_) { - return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant$6(slice$3.call(_)) : constant$6(_), density) : threshold; + return arguments.length ? (threshold = typeof _ === "function" ? _ : Array.isArray(_) ? constant$5(slice$1.call(_)) : constant$5(_), density) : threshold; }; density.bandwidth = function(_) { @@ -5889,4279 +6396,5374 @@ function density() { return density; } -var EOL = {}, - EOF = {}, - QUOTE = 34, - NEWLINE = 10, - RETURN = 13; +const EPSILON = Math.pow(2, -52); +const EDGE_STACK = new Uint32Array(512); -function objectConverter(columns) { - return new Function("d", "return {" + columns.map(function(name, i) { - return JSON.stringify(name) + ": d[" + i + "] || \"\""; - }).join(",") + "}"); -} +class Delaunator { -function customConverter(columns, f) { - var object = objectConverter(columns); - return function(row, i) { - return f(object(row), i, columns); - }; -} + static from(points, getX = defaultGetX, getY = defaultGetY) { + const n = points.length; + const coords = new Float64Array(n * 2); -// Compute unique columns in order of discovery. -function inferColumns(rows) { - var columnSet = Object.create(null), - columns = []; + for (let i = 0; i < n; i++) { + const p = points[i]; + coords[2 * i] = getX(p); + coords[2 * i + 1] = getY(p); + } - rows.forEach(function(row) { - for (var column in row) { - if (!(column in columnSet)) { - columns.push(columnSet[column] = column); - } + return new Delaunator(coords); } - }); - return columns; -} + constructor(coords) { + const n = coords.length >> 1; + if (n > 0 && typeof coords[0] !== 'number') throw new Error('Expected coords to contain numbers.'); -function pad(value, width) { - var s = value + "", length = s.length; - return length < width ? new Array(width - length + 1).join(0) + s : s; -} + this.coords = coords; -function formatYear(year) { - return year < 0 ? "-" + pad(-year, 6) - : year > 9999 ? "+" + pad(year, 6) - : pad(year, 4); -} + // arrays that will store the triangulation graph + const maxTriangles = Math.max(2 * n - 5, 0); + this._triangles = new Uint32Array(maxTriangles * 3); + this._halfedges = new Int32Array(maxTriangles * 3); -function formatDate(date) { - var hours = date.getUTCHours(), - minutes = date.getUTCMinutes(), - seconds = date.getUTCSeconds(), - milliseconds = date.getUTCMilliseconds(); - return isNaN(date) ? "Invalid Date" - : formatYear(date.getUTCFullYear()) + "-" + pad(date.getUTCMonth() + 1, 2) + "-" + pad(date.getUTCDate(), 2) - + (milliseconds ? "T" + pad(hours, 2) + ":" + pad(minutes, 2) + ":" + pad(seconds, 2) + "." + pad(milliseconds, 3) + "Z" - : seconds ? "T" + pad(hours, 2) + ":" + pad(minutes, 2) + ":" + pad(seconds, 2) + "Z" - : minutes || hours ? "T" + pad(hours, 2) + ":" + pad(minutes, 2) + "Z" - : ""); -} + // temporary arrays for tracking the edges of the advancing convex hull + this._hashSize = Math.ceil(Math.sqrt(n)); + this._hullPrev = new Uint32Array(n); // edge to prev edge + this._hullNext = new Uint32Array(n); // edge to next edge + this._hullTri = new Uint32Array(n); // edge to adjacent triangle + this._hullHash = new Int32Array(this._hashSize).fill(-1); // angular edge hash -function dsvFormat(delimiter) { - var reFormat = new RegExp("[\"" + delimiter + "\n\r]"), - DELIMITER = delimiter.charCodeAt(0); + // temporary arrays for sorting points + this._ids = new Uint32Array(n); + this._dists = new Float64Array(n); - function parse(text, f) { - var convert, columns, rows = parseRows(text, function(row, i) { - if (convert) return convert(row, i - 1); - columns = row, convert = f ? customConverter(row, f) : objectConverter(row); - }); - rows.columns = columns || []; - return rows; - } - - function parseRows(text, f) { - var rows = [], // output rows - N = text.length, - I = 0, // current character index - n = 0, // current line number - t, // current token - eof = N <= 0, // current token followed by EOF? - eol = false; // current token followed by EOL? + this.update(); + } - // Strip the trailing newline. - if (text.charCodeAt(N - 1) === NEWLINE) --N; - if (text.charCodeAt(N - 1) === RETURN) --N; + update() { + const {coords, _hullPrev: hullPrev, _hullNext: hullNext, _hullTri: hullTri, _hullHash: hullHash} = this; + const n = coords.length >> 1; - function token() { - if (eof) return EOF; - if (eol) return eol = false, EOL; + // populate an array of point indices; calculate input data bbox + let minX = Infinity; + let minY = Infinity; + let maxX = -Infinity; + let maxY = -Infinity; - // Unescape quotes. - var i, j = I, c; - if (text.charCodeAt(j) === QUOTE) { - while (I++ < N && text.charCodeAt(I) !== QUOTE || text.charCodeAt(++I) === QUOTE); - if ((i = I) >= N) eof = true; - else if ((c = text.charCodeAt(I++)) === NEWLINE) eol = true; - else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; } - return text.slice(j + 1, i - 1).replace(/""/g, "\""); - } + for (let i = 0; i < n; i++) { + const x = coords[2 * i]; + const y = coords[2 * i + 1]; + if (x < minX) minX = x; + if (y < minY) minY = y; + if (x > maxX) maxX = x; + if (y > maxY) maxY = y; + this._ids[i] = i; + } + const cx = (minX + maxX) / 2; + const cy = (minY + maxY) / 2; + + let minDist = Infinity; + let i0, i1, i2; + + // pick a seed point close to the center + for (let i = 0; i < n; i++) { + const d = dist(cx, cy, coords[2 * i], coords[2 * i + 1]); + if (d < minDist) { + i0 = i; + minDist = d; + } + } + const i0x = coords[2 * i0]; + const i0y = coords[2 * i0 + 1]; + + minDist = Infinity; + + // find the point closest to the seed + for (let i = 0; i < n; i++) { + if (i === i0) continue; + const d = dist(i0x, i0y, coords[2 * i], coords[2 * i + 1]); + if (d < minDist && d > 0) { + i1 = i; + minDist = d; + } + } + let i1x = coords[2 * i1]; + let i1y = coords[2 * i1 + 1]; + + let minRadius = Infinity; + + // find the third point which forms the smallest circumcircle with the first two + for (let i = 0; i < n; i++) { + if (i === i0 || i === i1) continue; + const r = circumradius(i0x, i0y, i1x, i1y, coords[2 * i], coords[2 * i + 1]); + if (r < minRadius) { + i2 = i; + minRadius = r; + } + } + let i2x = coords[2 * i2]; + let i2y = coords[2 * i2 + 1]; + + if (minRadius === Infinity) { + // order collinear points by dx (or dy if all x are identical) + // and return the list as a hull + for (let i = 0; i < n; i++) { + this._dists[i] = (coords[2 * i] - coords[0]) || (coords[2 * i + 1] - coords[1]); + } + quicksort(this._ids, this._dists, 0, n - 1); + const hull = new Uint32Array(n); + let j = 0; + for (let i = 0, d0 = -Infinity; i < n; i++) { + const id = this._ids[i]; + if (this._dists[id] > d0) { + hull[j++] = id; + d0 = this._dists[id]; + } + } + this.hull = hull.subarray(0, j); + this.triangles = new Uint32Array(0); + this.halfedges = new Uint32Array(0); + return; + } - // Find next delimiter or newline. - while (I < N) { - if ((c = text.charCodeAt(i = I++)) === NEWLINE) eol = true; - else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; } - else if (c !== DELIMITER) continue; - return text.slice(j, i); - } + // swap the order of the seed points for counter-clockwise orientation + if (orient(i0x, i0y, i1x, i1y, i2x, i2y)) { + const i = i1; + const x = i1x; + const y = i1y; + i1 = i2; + i1x = i2x; + i1y = i2y; + i2 = i; + i2x = x; + i2y = y; + } - // Return last token before EOF. - return eof = true, text.slice(j, N); - } + const center = circumcenter(i0x, i0y, i1x, i1y, i2x, i2y); + this._cx = center.x; + this._cy = center.y; - while ((t = token()) !== EOF) { - var row = []; - while (t !== EOL && t !== EOF) row.push(t), t = token(); - if (f && (row = f(row, n++)) == null) continue; - rows.push(row); - } + for (let i = 0; i < n; i++) { + this._dists[i] = dist(coords[2 * i], coords[2 * i + 1], center.x, center.y); + } - return rows; - } + // sort the points by distance from the seed triangle circumcenter + quicksort(this._ids, this._dists, 0, n - 1); - function preformatBody(rows, columns) { - return rows.map(function(row) { - return columns.map(function(column) { - return formatValue(row[column]); - }).join(delimiter); - }); - } + // set up the seed triangle as the starting hull + this._hullStart = i0; + let hullSize = 3; - function format(rows, columns) { - if (columns == null) columns = inferColumns(rows); - return [columns.map(formatValue).join(delimiter)].concat(preformatBody(rows, columns)).join("\n"); - } + hullNext[i0] = hullPrev[i2] = i1; + hullNext[i1] = hullPrev[i0] = i2; + hullNext[i2] = hullPrev[i1] = i0; - function formatBody(rows, columns) { - if (columns == null) columns = inferColumns(rows); - return preformatBody(rows, columns).join("\n"); - } + hullTri[i0] = 0; + hullTri[i1] = 1; + hullTri[i2] = 2; - function formatRows(rows) { - return rows.map(formatRow).join("\n"); - } + hullHash.fill(-1); + hullHash[this._hashKey(i0x, i0y)] = i0; + hullHash[this._hashKey(i1x, i1y)] = i1; + hullHash[this._hashKey(i2x, i2y)] = i2; - function formatRow(row) { - return row.map(formatValue).join(delimiter); - } + this.trianglesLen = 0; + this._addTriangle(i0, i1, i2, -1, -1, -1); - function formatValue(value) { - return value == null ? "" - : value instanceof Date ? formatDate(value) - : reFormat.test(value += "") ? "\"" + value.replace(/"/g, "\"\"") + "\"" - : value; - } + for (let k = 0, xp, yp; k < this._ids.length; k++) { + const i = this._ids[k]; + const x = coords[2 * i]; + const y = coords[2 * i + 1]; - return { - parse: parse, - parseRows: parseRows, - format: format, - formatBody: formatBody, - formatRows: formatRows, - formatRow: formatRow, - formatValue: formatValue - }; -} + // skip near-duplicate points + if (k > 0 && Math.abs(x - xp) <= EPSILON && Math.abs(y - yp) <= EPSILON) continue; + xp = x; + yp = y; -var csv = dsvFormat(","); + // skip seed triangle points + if (i === i0 || i === i1 || i === i2) continue; -var csvParse = csv.parse; -var csvParseRows = csv.parseRows; -var csvFormat = csv.format; -var csvFormatBody = csv.formatBody; -var csvFormatRows = csv.formatRows; -var csvFormatRow = csv.formatRow; -var csvFormatValue = csv.formatValue; + // find a visible edge on the convex hull using edge hash + let start = 0; + for (let j = 0, key = this._hashKey(x, y); j < this._hashSize; j++) { + start = hullHash[(key + j) % this._hashSize]; + if (start !== -1 && start !== hullNext[start]) break; + } -var tsv = dsvFormat("\t"); + start = hullPrev[start]; + let e = start, q; + while (q = hullNext[e], !orient(x, y, coords[2 * e], coords[2 * e + 1], coords[2 * q], coords[2 * q + 1])) { + e = q; + if (e === start) { + e = -1; + break; + } + } + if (e === -1) continue; // likely a near-duplicate point; skip it + + // add the first triangle from the point + let t = this._addTriangle(e, i, hullNext[e], -1, -1, hullTri[e]); + + // recursively flip triangles from the point until they satisfy the Delaunay condition + hullTri[i] = this._legalize(t + 2); + hullTri[e] = t; // keep track of boundary triangles on the hull + hullSize++; + + // walk forward through the hull, adding more triangles and flipping recursively + let n = hullNext[e]; + while (q = hullNext[n], orient(x, y, coords[2 * n], coords[2 * n + 1], coords[2 * q], coords[2 * q + 1])) { + t = this._addTriangle(n, i, q, hullTri[i], -1, hullTri[n]); + hullTri[i] = this._legalize(t + 2); + hullNext[n] = n; // mark as removed + hullSize--; + n = q; + } -var tsvParse = tsv.parse; -var tsvParseRows = tsv.parseRows; -var tsvFormat = tsv.format; -var tsvFormatBody = tsv.formatBody; -var tsvFormatRows = tsv.formatRows; -var tsvFormatRow = tsv.formatRow; -var tsvFormatValue = tsv.formatValue; + // walk backward from the other side, adding more triangles and flipping + if (e === start) { + while (q = hullPrev[e], orient(x, y, coords[2 * q], coords[2 * q + 1], coords[2 * e], coords[2 * e + 1])) { + t = this._addTriangle(q, i, e, -1, hullTri[e], hullTri[q]); + this._legalize(t + 2); + hullTri[q] = t; + hullNext[e] = e; // mark as removed + hullSize--; + e = q; + } + } -function autoType(object) { - for (var key in object) { - var value = object[key].trim(), number, m; - if (!value) value = null; - else if (value === "true") value = true; - else if (value === "false") value = false; - else if (value === "NaN") value = NaN; - else if (!isNaN(number = +value)) value = number; - else if (m = value.match(/^([-+]\d{2})?\d{4}(-\d{2}(-\d{2})?)?(T\d{2}:\d{2}(:\d{2}(\.\d{3})?)?(Z|[-+]\d{2}:\d{2})?)?$/)) { - if (fixtz && !!m[4] && !m[7]) value = value.replace(/-/g, "/").replace(/T/, " "); - value = new Date(value); - } - else continue; - object[key] = value; - } - return object; -} + // update the hull indices + this._hullStart = hullPrev[i] = e; + hullNext[e] = hullPrev[n] = i; + hullNext[i] = n; -// https://github.com/d3/d3-dsv/issues/45 -var fixtz = new Date("2019-01-01T00:00").getHours() || new Date("2019-07-01T00:00").getHours(); + // save the two new edges in the hash table + hullHash[this._hashKey(x, y)] = i; + hullHash[this._hashKey(coords[2 * e], coords[2 * e + 1])] = e; + } -function responseBlob(response) { - if (!response.ok) throw new Error(response.status + " " + response.statusText); - return response.blob(); -} + this.hull = new Uint32Array(hullSize); + for (let i = 0, e = this._hullStart; i < hullSize; i++) { + this.hull[i] = e; + e = hullNext[e]; + } -function blob(input, init) { - return fetch(input, init).then(responseBlob); -} + // trim typed triangle mesh arrays + this.triangles = this._triangles.subarray(0, this.trianglesLen); + this.halfedges = this._halfedges.subarray(0, this.trianglesLen); + } + + _hashKey(x, y) { + return Math.floor(pseudoAngle(x - this._cx, y - this._cy) * this._hashSize) % this._hashSize; + } + + _legalize(a) { + const {_triangles: triangles, _halfedges: halfedges, coords} = this; + + let i = 0; + let ar = 0; + + // recursion eliminated with a fixed-size stack + while (true) { + const b = halfedges[a]; + + /* if the pair of triangles doesn't satisfy the Delaunay condition + * (p1 is inside the circumcircle of [p0, pl, pr]), flip them, + * then do the same check/flip recursively for the new pair of triangles + * + * pl pl + * /||\ / \ + * al/ || \bl al/ \a + * / || \ / \ + * / a||b \ flip /___ar___\ + * p0\ || /p1 => p0\---bl---/p1 + * \ || / \ / + * ar\ || /br b\ /br + * \||/ \ / + * pr pr + */ + const a0 = a - a % 3; + ar = a0 + (a + 2) % 3; + + if (b === -1) { // convex hull edge + if (i === 0) break; + a = EDGE_STACK[--i]; + continue; + } -function responseArrayBuffer(response) { - if (!response.ok) throw new Error(response.status + " " + response.statusText); - return response.arrayBuffer(); -} + const b0 = b - b % 3; + const al = a0 + (a + 1) % 3; + const bl = b0 + (b + 2) % 3; + + const p0 = triangles[ar]; + const pr = triangles[a]; + const pl = triangles[al]; + const p1 = triangles[bl]; + + const illegal = inCircle( + coords[2 * p0], coords[2 * p0 + 1], + coords[2 * pr], coords[2 * pr + 1], + coords[2 * pl], coords[2 * pl + 1], + coords[2 * p1], coords[2 * p1 + 1]); + + if (illegal) { + triangles[a] = p1; + triangles[b] = p0; + + const hbl = halfedges[bl]; + + // edge swapped on the other side of the hull (rare); fix the halfedge reference + if (hbl === -1) { + let e = this._hullStart; + do { + if (this._hullTri[e] === bl) { + this._hullTri[e] = a; + break; + } + e = this._hullPrev[e]; + } while (e !== this._hullStart); + } + this._link(a, hbl); + this._link(b, halfedges[ar]); + this._link(ar, bl); + + const br = b0 + (b + 1) % 3; + + // don't worry about hitting the cap: it can only happen on extremely degenerate input + if (i < EDGE_STACK.length) { + EDGE_STACK[i++] = br; + } + } else { + if (i === 0) break; + a = EDGE_STACK[--i]; + } + } -function buffer(input, init) { - return fetch(input, init).then(responseArrayBuffer); -} + return ar; + } -function responseText(response) { - if (!response.ok) throw new Error(response.status + " " + response.statusText); - return response.text(); -} + _link(a, b) { + this._halfedges[a] = b; + if (b !== -1) this._halfedges[b] = a; + } -function text(input, init) { - return fetch(input, init).then(responseText); -} + // add a new triangle given vertex indices and adjacent half-edge ids + _addTriangle(i0, i1, i2, a, b, c) { + const t = this.trianglesLen; -function dsvParse(parse) { - return function(input, init, row) { - if (arguments.length === 2 && typeof init === "function") row = init, init = undefined; - return text(input, init).then(function(response) { - return parse(response, row); - }); - }; -} + this._triangles[t] = i0; + this._triangles[t + 1] = i1; + this._triangles[t + 2] = i2; -function dsv(delimiter, input, init, row) { - if (arguments.length === 3 && typeof init === "function") row = init, init = undefined; - var format = dsvFormat(delimiter); - return text(input, init).then(function(response) { - return format.parse(response, row); - }); -} + this._link(t, a); + this._link(t + 1, b); + this._link(t + 2, c); -var csv$1 = dsvParse(csvParse); -var tsv$1 = dsvParse(tsvParse); + this.trianglesLen += 3; -function image(input, init) { - return new Promise(function(resolve, reject) { - var image = new Image; - for (var key in init) image[key] = init[key]; - image.onerror = reject; - image.onload = function() { resolve(image); }; - image.src = input; - }); + return t; + } } -function responseJson(response) { - if (!response.ok) throw new Error(response.status + " " + response.statusText); - return response.json(); +// monotonically increases with real angle, but doesn't need expensive trigonometry +function pseudoAngle(dx, dy) { + const p = dx / (Math.abs(dx) + Math.abs(dy)); + return (dy > 0 ? 3 - p : 1 + p) / 4; // [0..1] } -function json(input, init) { - return fetch(input, init).then(responseJson); +function dist(ax, ay, bx, by) { + const dx = ax - bx; + const dy = ay - by; + return dx * dx + dy * dy; } -function parser(type) { - return function(input, init) { - return text(input, init).then(function(text) { - return (new DOMParser).parseFromString(text, type); - }); - }; +// return 2d orientation sign if we're confident in it through J. Shewchuk's error bound check +function orientIfSure(px, py, rx, ry, qx, qy) { + const l = (ry - py) * (qx - px); + const r = (rx - px) * (qy - py); + return Math.abs(l - r) >= 3.3306690738754716e-16 * Math.abs(l + r) ? l - r : 0; } -var xml = parser("application/xml"); +// a more robust orientation test that's stable in a given triangle (to fix robustness issues) +function orient(rx, ry, qx, qy, px, py) { + const sign = orientIfSure(px, py, rx, ry, qx, qy) || + orientIfSure(rx, ry, qx, qy, px, py) || + orientIfSure(qx, qy, px, py, rx, ry); + return sign < 0; +} -var html = parser("text/html"); +function inCircle(ax, ay, bx, by, cx, cy, px, py) { + const dx = ax - px; + const dy = ay - py; + const ex = bx - px; + const ey = by - py; + const fx = cx - px; + const fy = cy - py; -var svg = parser("image/svg+xml"); + const ap = dx * dx + dy * dy; + const bp = ex * ex + ey * ey; + const cp = fx * fx + fy * fy; -function center$1(x, y) { - var nodes; + return dx * (ey * cp - bp * fy) - + dy * (ex * cp - bp * fx) + + ap * (ex * fy - ey * fx) < 0; +} - if (x == null) x = 0; - if (y == null) y = 0; +function circumradius(ax, ay, bx, by, cx, cy) { + const dx = bx - ax; + const dy = by - ay; + const ex = cx - ax; + const ey = cy - ay; - function force() { - var i, - n = nodes.length, - node, - sx = 0, - sy = 0; + const bl = dx * dx + dy * dy; + const cl = ex * ex + ey * ey; + const d = 0.5 / (dx * ey - dy * ex); - for (i = 0; i < n; ++i) { - node = nodes[i], sx += node.x, sy += node.y; - } + const x = (ey * bl - dy * cl) * d; + const y = (dx * cl - ex * bl) * d; - for (sx = sx / n - x, sy = sy / n - y, i = 0; i < n; ++i) { - node = nodes[i], node.x -= sx, node.y -= sy; - } - } + return x * x + y * y; +} - force.initialize = function(_) { - nodes = _; - }; +function circumcenter(ax, ay, bx, by, cx, cy) { + const dx = bx - ax; + const dy = by - ay; + const ex = cx - ax; + const ey = cy - ay; - force.x = function(_) { - return arguments.length ? (x = +_, force) : x; - }; + const bl = dx * dx + dy * dy; + const cl = ex * ex + ey * ey; + const d = 0.5 / (dx * ey - dy * ex); - force.y = function(_) { - return arguments.length ? (y = +_, force) : y; - }; + const x = ax + (ey * bl - dy * cl) * d; + const y = ay + (dx * cl - ex * bl) * d; - return force; + return {x, y}; } -function constant$7(x) { - return function() { - return x; - }; -} +function quicksort(ids, dists, left, right) { + if (right - left <= 20) { + for (let i = left + 1; i <= right; i++) { + const temp = ids[i]; + const tempDist = dists[temp]; + let j = i - 1; + while (j >= left && dists[ids[j]] > tempDist) ids[j + 1] = ids[j--]; + ids[j + 1] = temp; + } + } else { + const median = (left + right) >> 1; + let i = left + 1; + let j = right; + swap(ids, median, i); + if (dists[ids[left]] > dists[ids[right]]) swap(ids, left, right); + if (dists[ids[i]] > dists[ids[right]]) swap(ids, i, right); + if (dists[ids[left]] > dists[ids[i]]) swap(ids, left, i); + + const temp = ids[i]; + const tempDist = dists[temp]; + while (true) { + do i++; while (dists[ids[i]] < tempDist); + do j--; while (dists[ids[j]] > tempDist); + if (j < i) break; + swap(ids, i, j); + } + ids[left + 1] = ids[j]; + ids[j] = temp; -function jiggle() { - return (Math.random() - 0.5) * 1e-6; + if (right - i + 1 >= j - left) { + quicksort(ids, dists, i, right); + quicksort(ids, dists, left, j - 1); + } else { + quicksort(ids, dists, left, j - 1); + quicksort(ids, dists, i, right); + } + } } -function tree_add(d) { - var x = +this._x.call(null, d), - y = +this._y.call(null, d); - return add(this.cover(x, y), x, y, d); +function swap(arr, i, j) { + const tmp = arr[i]; + arr[i] = arr[j]; + arr[j] = tmp; } -function add(tree, x, y, d) { - if (isNaN(x) || isNaN(y)) return tree; // ignore invalid points - - var parent, - node = tree._root, - leaf = {data: d}, - x0 = tree._x0, - y0 = tree._y0, - x1 = tree._x1, - y1 = tree._y1, - xm, - ym, - xp, - yp, - right, - bottom, - i, - j; +function defaultGetX(p) { + return p[0]; +} +function defaultGetY(p) { + return p[1]; +} - // If the tree is empty, initialize the root as a leaf. - if (!node) return tree._root = leaf, tree; +const epsilon$2 = 1e-6; - // Find the existing leaf for the new point, or add it. - while (node.length) { - if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; - if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; - if (parent = node, !(node = node[i = bottom << 1 | right])) return parent[i] = leaf, tree; +class Path { + constructor() { + this._x0 = this._y0 = // start of current subpath + this._x1 = this._y1 = null; // end of current subpath + this._ = ""; + } + moveTo(x, y) { + this._ += `M${this._x0 = this._x1 = +x},${this._y0 = this._y1 = +y}`; + } + closePath() { + if (this._x1 !== null) { + this._x1 = this._x0, this._y1 = this._y0; + this._ += "Z"; + } + } + lineTo(x, y) { + this._ += `L${this._x1 = +x},${this._y1 = +y}`; + } + arc(x, y, r) { + x = +x, y = +y, r = +r; + const x0 = x + r; + const y0 = y; + if (r < 0) throw new Error("negative radius"); + if (this._x1 === null) this._ += `M${x0},${y0}`; + else if (Math.abs(this._x1 - x0) > epsilon$2 || Math.abs(this._y1 - y0) > epsilon$2) this._ += "L" + x0 + "," + y0; + if (!r) return; + this._ += `A${r},${r},0,1,1,${x - r},${y}A${r},${r},0,1,1,${this._x1 = x0},${this._y1 = y0}`; + } + rect(x, y, w, h) { + this._ += `M${this._x0 = this._x1 = +x},${this._y0 = this._y1 = +y}h${+w}v${+h}h${-w}Z`; + } + value() { + return this._ || null; } - - // Is the new point is exactly coincident with the existing point? - xp = +tree._x.call(null, node.data); - yp = +tree._y.call(null, node.data); - if (x === xp && y === yp) return leaf.next = node, parent ? parent[i] = leaf : tree._root = leaf, tree; - - // Otherwise, split the leaf node until the old and new point are separated. - do { - parent = parent ? parent[i] = new Array(4) : tree._root = new Array(4); - if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; - if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; - } while ((i = bottom << 1 | right) === (j = (yp >= ym) << 1 | (xp >= xm))); - return parent[j] = node, parent[i] = leaf, tree; } -function addAll(data) { - var d, i, n = data.length, - x, - y, - xz = new Array(n), - yz = new Array(n), - x0 = Infinity, - y0 = Infinity, - x1 = -Infinity, - y1 = -Infinity; - - // Compute the points and their extent. - for (i = 0; i < n; ++i) { - if (isNaN(x = +this._x.call(null, d = data[i])) || isNaN(y = +this._y.call(null, d))) continue; - xz[i] = x; - yz[i] = y; - if (x < x0) x0 = x; - if (x > x1) x1 = x; - if (y < y0) y0 = y; - if (y > y1) y1 = y; +class Polygon { + constructor() { + this._ = []; } - - // If there were no (valid) points, abort. - if (x0 > x1 || y0 > y1) return this; - - // Expand the tree to cover the new points. - this.cover(x0, y0).cover(x1, y1); - - // Add the new points. - for (i = 0; i < n; ++i) { - add(this, xz[i], yz[i], data[i]); + moveTo(x, y) { + this._.push([x, y]); + } + closePath() { + this._.push(this._[0].slice()); + } + lineTo(x, y) { + this._.push([x, y]); + } + value() { + return this._.length ? this._ : null; } - - return this; } -function tree_cover(x, y) { - if (isNaN(x = +x) || isNaN(y = +y)) return this; // ignore invalid points - - var x0 = this._x0, - y0 = this._y0, - x1 = this._x1, - y1 = this._y1; - - // If the quadtree has no extent, initialize them. - // Integer extent are necessary so that if we later double the extent, - // the existing quadrant boundaries don’t change due to floating point error! - if (isNaN(x0)) { - x1 = (x0 = Math.floor(x)) + 1; - y1 = (y0 = Math.floor(y)) + 1; +class Voronoi { + constructor(delaunay, [xmin, ymin, xmax, ymax] = [0, 0, 960, 500]) { + if (!((xmax = +xmax) >= (xmin = +xmin)) || !((ymax = +ymax) >= (ymin = +ymin))) throw new Error("invalid bounds"); + this.delaunay = delaunay; + this._circumcenters = new Float64Array(delaunay.points.length * 2); + this.vectors = new Float64Array(delaunay.points.length * 2); + this.xmax = xmax, this.xmin = xmin; + this.ymax = ymax, this.ymin = ymin; + this._init(); } - - // Otherwise, double repeatedly to cover. - else { - var z = x1 - x0, - node = this._root, - parent, - i; - - while (x0 > x || x >= x1 || y0 > y || y >= y1) { - i = (y < y0) << 1 | (x < x0); - parent = new Array(4), parent[i] = node, node = parent, z *= 2; - switch (i) { - case 0: x1 = x0 + z, y1 = y0 + z; break; - case 1: x0 = x1 - z, y1 = y0 + z; break; - case 2: x1 = x0 + z, y0 = y1 - z; break; - case 3: x0 = x1 - z, y0 = y1 - z; break; + update() { + this.delaunay.update(); + this._init(); + return this; + } + _init() { + const {delaunay: {points, hull, triangles}, vectors} = this; + + // Compute circumcenters. + const circumcenters = this.circumcenters = this._circumcenters.subarray(0, triangles.length / 3 * 2); + for (let i = 0, j = 0, n = triangles.length, x, y; i < n; i += 3, j += 2) { + const t1 = triangles[i] * 2; + const t2 = triangles[i + 1] * 2; + const t3 = triangles[i + 2] * 2; + const x1 = points[t1]; + const y1 = points[t1 + 1]; + const x2 = points[t2]; + const y2 = points[t2 + 1]; + const x3 = points[t3]; + const y3 = points[t3 + 1]; + + const dx = x2 - x1; + const dy = y2 - y1; + const ex = x3 - x1; + const ey = y3 - y1; + const bl = dx * dx + dy * dy; + const cl = ex * ex + ey * ey; + const ab = (dx * ey - dy * ex) * 2; + + if (!ab) { + // degenerate case (collinear diagram) + x = (x1 + x3) / 2 - 1e8 * ey; + y = (y1 + y3) / 2 + 1e8 * ex; + } + else if (Math.abs(ab) < 1e-8) { + // almost equal points (degenerate triangle) + x = (x1 + x3) / 2; + y = (y1 + y3) / 2; + } else { + const d = 1 / ab; + x = x1 + (ey * bl - dy * cl) * d; + y = y1 + (dx * cl - ex * bl) * d; + } + circumcenters[j] = x; + circumcenters[j + 1] = y; + } + + // Compute exterior cell rays. + let h = hull[hull.length - 1]; + let p0, p1 = h * 4; + let x0, x1 = points[2 * h]; + let y0, y1 = points[2 * h + 1]; + vectors.fill(0); + for (let i = 0; i < hull.length; ++i) { + h = hull[i]; + p0 = p1, x0 = x1, y0 = y1; + p1 = h * 4, x1 = points[2 * h], y1 = points[2 * h + 1]; + vectors[p0 + 2] = vectors[p1] = y0 - y1; + vectors[p0 + 3] = vectors[p1 + 1] = x1 - x0; + } + } + render(context) { + const buffer = context == null ? context = new Path : undefined; + const {delaunay: {halfedges, inedges, hull}, circumcenters, vectors} = this; + if (hull.length <= 1) return null; + for (let i = 0, n = halfedges.length; i < n; ++i) { + const j = halfedges[i]; + if (j < i) continue; + const ti = Math.floor(i / 3) * 2; + const tj = Math.floor(j / 3) * 2; + const xi = circumcenters[ti]; + const yi = circumcenters[ti + 1]; + const xj = circumcenters[tj]; + const yj = circumcenters[tj + 1]; + this._renderSegment(xi, yi, xj, yj, context); + } + let h0, h1 = hull[hull.length - 1]; + for (let i = 0; i < hull.length; ++i) { + h0 = h1, h1 = hull[i]; + const t = Math.floor(inedges[h1] / 3) * 2; + const x = circumcenters[t]; + const y = circumcenters[t + 1]; + const v = h0 * 4; + const p = this._project(x, y, vectors[v + 2], vectors[v + 3]); + if (p) this._renderSegment(x, y, p[0], p[1], context); + } + return buffer && buffer.value(); + } + renderBounds(context) { + const buffer = context == null ? context = new Path : undefined; + context.rect(this.xmin, this.ymin, this.xmax - this.xmin, this.ymax - this.ymin); + return buffer && buffer.value(); + } + renderCell(i, context) { + const buffer = context == null ? context = new Path : undefined; + const points = this._clip(i); + if (points === null || !points.length) return; + context.moveTo(points[0], points[1]); + let n = points.length; + while (points[0] === points[n-2] && points[1] === points[n-1] && n > 1) n -= 2; + for (let i = 2; i < n; i += 2) { + if (points[i] !== points[i-2] || points[i+1] !== points[i-1]) + context.lineTo(points[i], points[i + 1]); + } + context.closePath(); + return buffer && buffer.value(); + } + *cellPolygons() { + const {delaunay: {points}} = this; + for (let i = 0, n = points.length / 2; i < n; ++i) { + const cell = this.cellPolygon(i); + if (cell) cell.index = i, yield cell; + } + } + cellPolygon(i) { + const polygon = new Polygon; + this.renderCell(i, polygon); + return polygon.value(); + } + _renderSegment(x0, y0, x1, y1, context) { + let S; + const c0 = this._regioncode(x0, y0); + const c1 = this._regioncode(x1, y1); + if (c0 === 0 && c1 === 0) { + context.moveTo(x0, y0); + context.lineTo(x1, y1); + } else if (S = this._clipSegment(x0, y0, x1, y1, c0, c1)) { + context.moveTo(S[0], S[1]); + context.lineTo(S[2], S[3]); + } + } + contains(i, x, y) { + if ((x = +x, x !== x) || (y = +y, y !== y)) return false; + return this.delaunay._step(i, x, y) === i; + } + *neighbors(i) { + const ci = this._clip(i); + if (ci) for (const j of this.delaunay.neighbors(i)) { + const cj = this._clip(j); + // find the common edge + if (cj) loop: for (let ai = 0, li = ci.length; ai < li; ai += 2) { + for (let aj = 0, lj = cj.length; aj < lj; aj += 2) { + if (ci[ai] == cj[aj] + && ci[ai + 1] == cj[aj + 1] + && ci[(ai + 2) % li] == cj[(aj + lj - 2) % lj] + && ci[(ai + 3) % li] == cj[(aj + lj - 1) % lj] + ) { + yield j; + break loop; + } + } } } - - if (this._root && this._root.length) this._root = node; } - - this._x0 = x0; - this._y0 = y0; - this._x1 = x1; - this._y1 = y1; - return this; + _cell(i) { + const {circumcenters, delaunay: {inedges, halfedges, triangles}} = this; + const e0 = inedges[i]; + if (e0 === -1) return null; // coincident point + const points = []; + let e = e0; + do { + const t = Math.floor(e / 3); + points.push(circumcenters[t * 2], circumcenters[t * 2 + 1]); + e = e % 3 === 2 ? e - 2 : e + 1; + if (triangles[e] !== i) break; // bad triangulation + e = halfedges[e]; + } while (e !== e0 && e !== -1); + return points; + } + _clip(i) { + // degenerate case (1 valid point: return the box) + if (i === 0 && this.delaunay.hull.length === 1) { + return [this.xmax, this.ymin, this.xmax, this.ymax, this.xmin, this.ymax, this.xmin, this.ymin]; + } + const points = this._cell(i); + if (points === null) return null; + const {vectors: V} = this; + const v = i * 4; + return V[v] || V[v + 1] + ? this._clipInfinite(i, points, V[v], V[v + 1], V[v + 2], V[v + 3]) + : this._clipFinite(i, points); + } + _clipFinite(i, points) { + const n = points.length; + let P = null; + let x0, y0, x1 = points[n - 2], y1 = points[n - 1]; + let c0, c1 = this._regioncode(x1, y1); + let e0, e1; + for (let j = 0; j < n; j += 2) { + x0 = x1, y0 = y1, x1 = points[j], y1 = points[j + 1]; + c0 = c1, c1 = this._regioncode(x1, y1); + if (c0 === 0 && c1 === 0) { + e0 = e1, e1 = 0; + if (P) P.push(x1, y1); + else P = [x1, y1]; + } else { + let S, sx0, sy0, sx1, sy1; + if (c0 === 0) { + if ((S = this._clipSegment(x0, y0, x1, y1, c0, c1)) === null) continue; + [sx0, sy0, sx1, sy1] = S; + } else { + if ((S = this._clipSegment(x1, y1, x0, y0, c1, c0)) === null) continue; + [sx1, sy1, sx0, sy0] = S; + e0 = e1, e1 = this._edgecode(sx0, sy0); + if (e0 && e1) this._edge(i, e0, e1, P, P.length); + if (P) P.push(sx0, sy0); + else P = [sx0, sy0]; + } + e0 = e1, e1 = this._edgecode(sx1, sy1); + if (e0 && e1) this._edge(i, e0, e1, P, P.length); + if (P) P.push(sx1, sy1); + else P = [sx1, sy1]; + } + } + if (P) { + e0 = e1, e1 = this._edgecode(P[0], P[1]); + if (e0 && e1) this._edge(i, e0, e1, P, P.length); + } else if (this.contains(i, (this.xmin + this.xmax) / 2, (this.ymin + this.ymax) / 2)) { + return [this.xmax, this.ymin, this.xmax, this.ymax, this.xmin, this.ymax, this.xmin, this.ymin]; + } + return P; + } + _clipSegment(x0, y0, x1, y1, c0, c1) { + while (true) { + if (c0 === 0 && c1 === 0) return [x0, y0, x1, y1]; + if (c0 & c1) return null; + let x, y, c = c0 || c1; + if (c & 0b1000) x = x0 + (x1 - x0) * (this.ymax - y0) / (y1 - y0), y = this.ymax; + else if (c & 0b0100) x = x0 + (x1 - x0) * (this.ymin - y0) / (y1 - y0), y = this.ymin; + else if (c & 0b0010) y = y0 + (y1 - y0) * (this.xmax - x0) / (x1 - x0), x = this.xmax; + else y = y0 + (y1 - y0) * (this.xmin - x0) / (x1 - x0), x = this.xmin; + if (c0) x0 = x, y0 = y, c0 = this._regioncode(x0, y0); + else x1 = x, y1 = y, c1 = this._regioncode(x1, y1); + } + } + _clipInfinite(i, points, vx0, vy0, vxn, vyn) { + let P = Array.from(points), p; + if (p = this._project(P[0], P[1], vx0, vy0)) P.unshift(p[0], p[1]); + if (p = this._project(P[P.length - 2], P[P.length - 1], vxn, vyn)) P.push(p[0], p[1]); + if (P = this._clipFinite(i, P)) { + for (let j = 0, n = P.length, c0, c1 = this._edgecode(P[n - 2], P[n - 1]); j < n; j += 2) { + c0 = c1, c1 = this._edgecode(P[j], P[j + 1]); + if (c0 && c1) j = this._edge(i, c0, c1, P, j), n = P.length; + } + } else if (this.contains(i, (this.xmin + this.xmax) / 2, (this.ymin + this.ymax) / 2)) { + P = [this.xmin, this.ymin, this.xmax, this.ymin, this.xmax, this.ymax, this.xmin, this.ymax]; + } + return P; + } + _edge(i, e0, e1, P, j) { + while (e0 !== e1) { + let x, y; + switch (e0) { + case 0b0101: e0 = 0b0100; continue; // top-left + case 0b0100: e0 = 0b0110, x = this.xmax, y = this.ymin; break; // top + case 0b0110: e0 = 0b0010; continue; // top-right + case 0b0010: e0 = 0b1010, x = this.xmax, y = this.ymax; break; // right + case 0b1010: e0 = 0b1000; continue; // bottom-right + case 0b1000: e0 = 0b1001, x = this.xmin, y = this.ymax; break; // bottom + case 0b1001: e0 = 0b0001; continue; // bottom-left + case 0b0001: e0 = 0b0101, x = this.xmin, y = this.ymin; break; // left + } + if ((P[j] !== x || P[j + 1] !== y) && this.contains(i, x, y)) { + P.splice(j, 0, x, y), j += 2; + } + } + if (P.length > 4) { + for (let i = 0; i < P.length; i+= 2) { + const j = (i + 2) % P.length, k = (i + 4) % P.length; + if (P[i] === P[j] && P[j] === P[k] + || P[i + 1] === P[j + 1] && P[j + 1] === P[k + 1]) + P.splice(j, 2), i -= 2; + } + } + return j; + } + _project(x0, y0, vx, vy) { + let t = Infinity, c, x, y; + if (vy < 0) { // top + if (y0 <= this.ymin) return null; + if ((c = (this.ymin - y0) / vy) < t) y = this.ymin, x = x0 + (t = c) * vx; + } else if (vy > 0) { // bottom + if (y0 >= this.ymax) return null; + if ((c = (this.ymax - y0) / vy) < t) y = this.ymax, x = x0 + (t = c) * vx; + } + if (vx > 0) { // right + if (x0 >= this.xmax) return null; + if ((c = (this.xmax - x0) / vx) < t) x = this.xmax, y = y0 + (t = c) * vy; + } else if (vx < 0) { // left + if (x0 <= this.xmin) return null; + if ((c = (this.xmin - x0) / vx) < t) x = this.xmin, y = y0 + (t = c) * vy; + } + return [x, y]; + } + _edgecode(x, y) { + return (x === this.xmin ? 0b0001 + : x === this.xmax ? 0b0010 : 0b0000) + | (y === this.ymin ? 0b0100 + : y === this.ymax ? 0b1000 : 0b0000); + } + _regioncode(x, y) { + return (x < this.xmin ? 0b0001 + : x > this.xmax ? 0b0010 : 0b0000) + | (y < this.ymin ? 0b0100 + : y > this.ymax ? 0b1000 : 0b0000); + } } -function tree_data() { - var data = []; - this.visit(function(node) { - if (!node.length) do data.push(node.data); while (node = node.next) - }); - return data; +const tau$2 = 2 * Math.PI, pow$2 = Math.pow; + +function pointX(p) { + return p[0]; } -function tree_extent(_) { - return arguments.length - ? this.cover(+_[0][0], +_[0][1]).cover(+_[1][0], +_[1][1]) - : isNaN(this._x0) ? undefined : [[this._x0, this._y0], [this._x1, this._y1]]; +function pointY(p) { + return p[1]; } -function Quad(node, x0, y0, x1, y1) { - this.node = node; - this.x0 = x0; - this.y0 = y0; - this.x1 = x1; - this.y1 = y1; +// A triangulation is collinear if all its triangles have a non-null area +function collinear(d) { + const {triangles, coords} = d; + for (let i = 0; i < triangles.length; i += 3) { + const a = 2 * triangles[i], + b = 2 * triangles[i + 1], + c = 2 * triangles[i + 2], + cross = (coords[c] - coords[a]) * (coords[b + 1] - coords[a + 1]) + - (coords[b] - coords[a]) * (coords[c + 1] - coords[a + 1]); + if (cross > 1e-10) return false; + } + return true; } -function tree_find(x, y, radius) { - var data, - x0 = this._x0, - y0 = this._y0, - x1, - y1, - x2, - y2, - x3 = this._x1, - y3 = this._y1, - quads = [], - node = this._root, - q, - i; +function jitter(x, y, r) { + return [x + Math.sin(x + y) * r, y + Math.cos(x - y) * r]; +} - if (node) quads.push(new Quad(node, x0, y0, x3, y3)); - if (radius == null) radius = Infinity; - else { - x0 = x - radius, y0 = y - radius; - x3 = x + radius, y3 = y + radius; - radius *= radius; +class Delaunay { + static from(points, fx = pointX, fy = pointY, that) { + return new Delaunay("length" in points + ? flatArray(points, fx, fy, that) + : Float64Array.from(flatIterable(points, fx, fy, that))); } + constructor(points) { + this._delaunator = new Delaunator(points); + this.inedges = new Int32Array(points.length / 2); + this._hullIndex = new Int32Array(points.length / 2); + this.points = this._delaunator.coords; + this._init(); + } + update() { + this._delaunator.update(); + this._init(); + return this; + } + _init() { + const d = this._delaunator, points = this.points; + + // check for collinear + if (d.hull && d.hull.length > 2 && collinear(d)) { + this.collinear = Int32Array.from({length: points.length/2}, (_,i) => i) + .sort((i, j) => points[2 * i] - points[2 * j] || points[2 * i + 1] - points[2 * j + 1]); // for exact neighbors + const e = this.collinear[0], f = this.collinear[this.collinear.length - 1], + bounds = [ points[2 * e], points[2 * e + 1], points[2 * f], points[2 * f + 1] ], + r = 1e-8 * Math.hypot(bounds[3] - bounds[1], bounds[2] - bounds[0]); + for (let i = 0, n = points.length / 2; i < n; ++i) { + const p = jitter(points[2 * i], points[2 * i + 1], r); + points[2 * i] = p[0]; + points[2 * i + 1] = p[1]; + } + this._delaunator = new Delaunator(points); + } else { + delete this.collinear; + } - while (q = quads.pop()) { - - // Stop searching if this quadrant can’t contain a closer node. - if (!(node = q.node) - || (x1 = q.x0) > x3 - || (y1 = q.y0) > y3 - || (x2 = q.x1) < x0 - || (y2 = q.y1) < y0) continue; + const halfedges = this.halfedges = this._delaunator.halfedges; + const hull = this.hull = this._delaunator.hull; + const triangles = this.triangles = this._delaunator.triangles; + const inedges = this.inedges.fill(-1); + const hullIndex = this._hullIndex.fill(-1); - // Bisect the current quadrant. - if (node.length) { - var xm = (x1 + x2) / 2, - ym = (y1 + y2) / 2; + // Compute an index from each point to an (arbitrary) incoming halfedge + // Used to give the first neighbor of each point; for this reason, + // on the hull we give priority to exterior halfedges + for (let e = 0, n = halfedges.length; e < n; ++e) { + const p = triangles[e % 3 === 2 ? e - 2 : e + 1]; + if (halfedges[e] === -1 || inedges[p] === -1) inedges[p] = e; + } + for (let i = 0, n = hull.length; i < n; ++i) { + hullIndex[hull[i]] = i; + } - quads.push( - new Quad(node[3], xm, ym, x2, y2), - new Quad(node[2], x1, ym, xm, y2), - new Quad(node[1], xm, y1, x2, ym), - new Quad(node[0], x1, y1, xm, ym) - ); + // degenerate case: 1 or 2 (distinct) points + if (hull.length <= 2 && hull.length > 0) { + this.triangles = new Int32Array(3).fill(-1); + this.halfedges = new Int32Array(3).fill(-1); + this.triangles[0] = hull[0]; + this.triangles[1] = hull[1]; + this.triangles[2] = hull[1]; + inedges[hull[0]] = 1; + if (hull.length === 2) inedges[hull[1]] = 0; + } + } + voronoi(bounds) { + return new Voronoi(this, bounds); + } + *neighbors(i) { + const {inedges, hull, _hullIndex, halfedges, triangles, collinear} = this; - // Visit the closest quadrant first. - if (i = (y >= ym) << 1 | (x >= xm)) { - q = quads[quads.length - 1]; - quads[quads.length - 1] = quads[quads.length - 1 - i]; - quads[quads.length - 1 - i] = q; - } + // degenerate case with several collinear points + if (collinear) { + const l = collinear.indexOf(i); + if (l > 0) yield collinear[l - 1]; + if (l < collinear.length - 1) yield collinear[l + 1]; + return; } - // Visit this point. (Visiting coincident points isn’t necessary!) - else { - var dx = x - +this._x.call(null, node.data), - dy = y - +this._y.call(null, node.data), - d2 = dx * dx + dy * dy; - if (d2 < radius) { - var d = Math.sqrt(radius = d2); - x0 = x - d, y0 = y - d; - x3 = x + d, y3 = y + d; - data = node.data; + const e0 = inedges[i]; + if (e0 === -1) return; // coincident point + let e = e0, p0 = -1; + do { + yield p0 = triangles[e]; + e = e % 3 === 2 ? e - 2 : e + 1; + if (triangles[e] !== i) return; // bad triangulation + e = halfedges[e]; + if (e === -1) { + const p = hull[(_hullIndex[i] + 1) % hull.length]; + if (p !== p0) yield p; + return; + } + } while (e !== e0); + } + find(x, y, i = 0) { + if ((x = +x, x !== x) || (y = +y, y !== y)) return -1; + const i0 = i; + let c; + while ((c = this._step(i, x, y)) >= 0 && c !== i && c !== i0) i = c; + return c; + } + _step(i, x, y) { + const {inedges, hull, _hullIndex, halfedges, triangles, points} = this; + if (inedges[i] === -1 || !points.length) return (i + 1) % (points.length >> 1); + let c = i; + let dc = pow$2(x - points[i * 2], 2) + pow$2(y - points[i * 2 + 1], 2); + const e0 = inedges[i]; + let e = e0; + do { + let t = triangles[e]; + const dt = pow$2(x - points[t * 2], 2) + pow$2(y - points[t * 2 + 1], 2); + if (dt < dc) dc = dt, c = t; + e = e % 3 === 2 ? e - 2 : e + 1; + if (triangles[e] !== i) break; // bad triangulation + e = halfedges[e]; + if (e === -1) { + e = hull[(_hullIndex[i] + 1) % hull.length]; + if (e !== t) { + if (pow$2(x - points[e * 2], 2) + pow$2(y - points[e * 2 + 1], 2) < dc) return e; + } + break; } + } while (e !== e0); + return c; + } + render(context) { + const buffer = context == null ? context = new Path : undefined; + const {points, halfedges, triangles} = this; + for (let i = 0, n = halfedges.length; i < n; ++i) { + const j = halfedges[i]; + if (j < i) continue; + const ti = triangles[i] * 2; + const tj = triangles[j] * 2; + context.moveTo(points[ti], points[ti + 1]); + context.lineTo(points[tj], points[tj + 1]); + } + this.renderHull(context); + return buffer && buffer.value(); + } + renderPoints(context, r = 2) { + const buffer = context == null ? context = new Path : undefined; + const {points} = this; + for (let i = 0, n = points.length; i < n; i += 2) { + const x = points[i], y = points[i + 1]; + context.moveTo(x + r, y); + context.arc(x, y, r, 0, tau$2); + } + return buffer && buffer.value(); + } + renderHull(context) { + const buffer = context == null ? context = new Path : undefined; + const {hull, points} = this; + const h = hull[0] * 2, n = hull.length; + context.moveTo(points[h], points[h + 1]); + for (let i = 1; i < n; ++i) { + const h = 2 * hull[i]; + context.lineTo(points[h], points[h + 1]); + } + context.closePath(); + return buffer && buffer.value(); + } + hullPolygon() { + const polygon = new Polygon; + this.renderHull(polygon); + return polygon.value(); + } + renderTriangle(i, context) { + const buffer = context == null ? context = new Path : undefined; + const {points, triangles} = this; + const t0 = triangles[i *= 3] * 2; + const t1 = triangles[i + 1] * 2; + const t2 = triangles[i + 2] * 2; + context.moveTo(points[t0], points[t0 + 1]); + context.lineTo(points[t1], points[t1 + 1]); + context.lineTo(points[t2], points[t2 + 1]); + context.closePath(); + return buffer && buffer.value(); + } + *trianglePolygons() { + const {triangles} = this; + for (let i = 0, n = triangles.length / 3; i < n; ++i) { + yield this.trianglePolygon(i); } } + trianglePolygon(i) { + const polygon = new Polygon; + this.renderTriangle(i, polygon); + return polygon.value(); + } +} - return data; +function flatArray(points, fx, fy, that) { + const n = points.length; + const array = new Float64Array(n * 2); + for (let i = 0; i < n; ++i) { + const p = points[i]; + array[i * 2] = fx.call(that, p, i, points); + array[i * 2 + 1] = fy.call(that, p, i, points); + } + return array; } -function tree_remove(d) { - if (isNaN(x = +this._x.call(null, d)) || isNaN(y = +this._y.call(null, d))) return this; // ignore invalid points +function* flatIterable(points, fx, fy, that) { + let i = 0; + for (const p of points) { + yield fx.call(that, p, i, points); + yield fy.call(that, p, i, points); + ++i; + } +} - var parent, - node = this._root, - retainer, - previous, - next, - x0 = this._x0, - y0 = this._y0, - x1 = this._x1, - y1 = this._y1, - x, - y, - xm, - ym, - right, - bottom, - i, - j; +var EOL = {}, + EOF = {}, + QUOTE = 34, + NEWLINE = 10, + RETURN = 13; - // If the tree is empty, initialize the root as a leaf. - if (!node) return this; - - // Find the leaf node for the point. - // While descending, also retain the deepest parent with a non-removed sibling. - if (node.length) while (true) { - if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; - if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; - if (!(parent = node, node = node[i = bottom << 1 | right])) return this; - if (!node.length) break; - if (parent[(i + 1) & 3] || parent[(i + 2) & 3] || parent[(i + 3) & 3]) retainer = parent, j = i; - } - - // Find the point to remove. - while (node.data !== d) if (!(previous = node, node = node.next)) return this; - if (next = node.next) delete node.next; - - // If there are multiple coincident points, remove just the point. - if (previous) return (next ? previous.next = next : delete previous.next), this; +function objectConverter(columns) { + return new Function("d", "return {" + columns.map(function(name, i) { + return JSON.stringify(name) + ": d[" + i + "] || \"\""; + }).join(",") + "}"); +} - // If this is the root point, remove it. - if (!parent) return this._root = next, this; +function customConverter(columns, f) { + var object = objectConverter(columns); + return function(row, i) { + return f(object(row), i, columns); + }; +} - // Remove this leaf. - next ? parent[i] = next : delete parent[i]; +// Compute unique columns in order of discovery. +function inferColumns(rows) { + var columnSet = Object.create(null), + columns = []; - // If the parent now contains exactly one leaf, collapse superfluous parents. - if ((node = parent[0] || parent[1] || parent[2] || parent[3]) - && node === (parent[3] || parent[2] || parent[1] || parent[0]) - && !node.length) { - if (retainer) retainer[j] = node; - else this._root = node; - } + rows.forEach(function(row) { + for (var column in row) { + if (!(column in columnSet)) { + columns.push(columnSet[column] = column); + } + } + }); - return this; + return columns; } -function removeAll(data) { - for (var i = 0, n = data.length; i < n; ++i) this.remove(data[i]); - return this; +function pad$1(value, width) { + var s = value + "", length = s.length; + return length < width ? new Array(width - length + 1).join(0) + s : s; } -function tree_root() { - return this._root; +function formatYear$1(year) { + return year < 0 ? "-" + pad$1(-year, 6) + : year > 9999 ? "+" + pad$1(year, 6) + : pad$1(year, 4); } -function tree_size() { - var size = 0; - this.visit(function(node) { - if (!node.length) do ++size; while (node = node.next) - }); - return size; +function formatDate(date) { + var hours = date.getUTCHours(), + minutes = date.getUTCMinutes(), + seconds = date.getUTCSeconds(), + milliseconds = date.getUTCMilliseconds(); + return isNaN(date) ? "Invalid Date" + : formatYear$1(date.getUTCFullYear()) + "-" + pad$1(date.getUTCMonth() + 1, 2) + "-" + pad$1(date.getUTCDate(), 2) + + (milliseconds ? "T" + pad$1(hours, 2) + ":" + pad$1(minutes, 2) + ":" + pad$1(seconds, 2) + "." + pad$1(milliseconds, 3) + "Z" + : seconds ? "T" + pad$1(hours, 2) + ":" + pad$1(minutes, 2) + ":" + pad$1(seconds, 2) + "Z" + : minutes || hours ? "T" + pad$1(hours, 2) + ":" + pad$1(minutes, 2) + "Z" + : ""); } -function tree_visit(callback) { - var quads = [], q, node = this._root, child, x0, y0, x1, y1; - if (node) quads.push(new Quad(node, this._x0, this._y0, this._x1, this._y1)); - while (q = quads.pop()) { - if (!callback(node = q.node, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1) && node.length) { - var xm = (x0 + x1) / 2, ym = (y0 + y1) / 2; - if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1)); - if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1)); - if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym)); - if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym)); - } - } - return this; -} +function dsvFormat(delimiter) { + var reFormat = new RegExp("[\"" + delimiter + "\n\r]"), + DELIMITER = delimiter.charCodeAt(0); -function tree_visitAfter(callback) { - var quads = [], next = [], q; - if (this._root) quads.push(new Quad(this._root, this._x0, this._y0, this._x1, this._y1)); - while (q = quads.pop()) { - var node = q.node; - if (node.length) { - var child, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1, xm = (x0 + x1) / 2, ym = (y0 + y1) / 2; - if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym)); - if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym)); - if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1)); - if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1)); - } - next.push(q); - } - while (q = next.pop()) { - callback(q.node, q.x0, q.y0, q.x1, q.y1); + function parse(text, f) { + var convert, columns, rows = parseRows(text, function(row, i) { + if (convert) return convert(row, i - 1); + columns = row, convert = f ? customConverter(row, f) : objectConverter(row); + }); + rows.columns = columns || []; + return rows; } - return this; -} -function defaultX$1(d) { - return d[0]; -} + function parseRows(text, f) { + var rows = [], // output rows + N = text.length, + I = 0, // current character index + n = 0, // current line number + t, // current token + eof = N <= 0, // current token followed by EOF? + eol = false; // current token followed by EOL? -function tree_x(_) { - return arguments.length ? (this._x = _, this) : this._x; -} + // Strip the trailing newline. + if (text.charCodeAt(N - 1) === NEWLINE) --N; + if (text.charCodeAt(N - 1) === RETURN) --N; -function defaultY$1(d) { - return d[1]; -} + function token() { + if (eof) return EOF; + if (eol) return eol = false, EOL; -function tree_y(_) { - return arguments.length ? (this._y = _, this) : this._y; -} + // Unescape quotes. + var i, j = I, c; + if (text.charCodeAt(j) === QUOTE) { + while (I++ < N && text.charCodeAt(I) !== QUOTE || text.charCodeAt(++I) === QUOTE); + if ((i = I) >= N) eof = true; + else if ((c = text.charCodeAt(I++)) === NEWLINE) eol = true; + else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; } + return text.slice(j + 1, i - 1).replace(/""/g, "\""); + } -function quadtree(nodes, x, y) { - var tree = new Quadtree(x == null ? defaultX$1 : x, y == null ? defaultY$1 : y, NaN, NaN, NaN, NaN); - return nodes == null ? tree : tree.addAll(nodes); -} + // Find next delimiter or newline. + while (I < N) { + if ((c = text.charCodeAt(i = I++)) === NEWLINE) eol = true; + else if (c === RETURN) { eol = true; if (text.charCodeAt(I) === NEWLINE) ++I; } + else if (c !== DELIMITER) continue; + return text.slice(j, i); + } -function Quadtree(x, y, x0, y0, x1, y1) { - this._x = x; - this._y = y; - this._x0 = x0; - this._y0 = y0; - this._x1 = x1; - this._y1 = y1; - this._root = undefined; -} + // Return last token before EOF. + return eof = true, text.slice(j, N); + } -function leaf_copy(leaf) { - var copy = {data: leaf.data}, next = copy; - while (leaf = leaf.next) next = next.next = {data: leaf.data}; - return copy; -} + while ((t = token()) !== EOF) { + var row = []; + while (t !== EOL && t !== EOF) row.push(t), t = token(); + if (f && (row = f(row, n++)) == null) continue; + rows.push(row); + } -var treeProto = quadtree.prototype = Quadtree.prototype; + return rows; + } -treeProto.copy = function() { - var copy = new Quadtree(this._x, this._y, this._x0, this._y0, this._x1, this._y1), - node = this._root, - nodes, - child; + function preformatBody(rows, columns) { + return rows.map(function(row) { + return columns.map(function(column) { + return formatValue(row[column]); + }).join(delimiter); + }); + } - if (!node) return copy; + function format(rows, columns) { + if (columns == null) columns = inferColumns(rows); + return [columns.map(formatValue).join(delimiter)].concat(preformatBody(rows, columns)).join("\n"); + } - if (!node.length) return copy._root = leaf_copy(node), copy; + function formatBody(rows, columns) { + if (columns == null) columns = inferColumns(rows); + return preformatBody(rows, columns).join("\n"); + } - nodes = [{source: node, target: copy._root = new Array(4)}]; - while (node = nodes.pop()) { - for (var i = 0; i < 4; ++i) { - if (child = node.source[i]) { - if (child.length) nodes.push({source: child, target: node.target[i] = new Array(4)}); - else node.target[i] = leaf_copy(child); - } - } + function formatRows(rows) { + return rows.map(formatRow).join("\n"); } - return copy; -}; + function formatRow(row) { + return row.map(formatValue).join(delimiter); + } -treeProto.add = tree_add; -treeProto.addAll = addAll; -treeProto.cover = tree_cover; -treeProto.data = tree_data; -treeProto.extent = tree_extent; -treeProto.find = tree_find; -treeProto.remove = tree_remove; -treeProto.removeAll = removeAll; -treeProto.root = tree_root; -treeProto.size = tree_size; -treeProto.visit = tree_visit; -treeProto.visitAfter = tree_visitAfter; -treeProto.x = tree_x; -treeProto.y = tree_y; + function formatValue(value) { + return value == null ? "" + : value instanceof Date ? formatDate(value) + : reFormat.test(value += "") ? "\"" + value.replace(/"/g, "\"\"") + "\"" + : value; + } -function x(d) { - return d.x + d.vx; + return { + parse: parse, + parseRows: parseRows, + format: format, + formatBody: formatBody, + formatRows: formatRows, + formatRow: formatRow, + formatValue: formatValue + }; } -function y(d) { - return d.y + d.vy; -} +var csv$1 = dsvFormat(","); -function collide(radius) { - var nodes, - radii, - strength = 1, - iterations = 1; +var csvParse = csv$1.parse; +var csvParseRows = csv$1.parseRows; +var csvFormat = csv$1.format; +var csvFormatBody = csv$1.formatBody; +var csvFormatRows = csv$1.formatRows; +var csvFormatRow = csv$1.formatRow; +var csvFormatValue = csv$1.formatValue; - if (typeof radius !== "function") radius = constant$7(radius == null ? 1 : +radius); - - function force() { - var i, n = nodes.length, - tree, - node, - xi, - yi, - ri, - ri2; +var tsv$1 = dsvFormat("\t"); - for (var k = 0; k < iterations; ++k) { - tree = quadtree(nodes, x, y).visitAfter(prepare); - for (i = 0; i < n; ++i) { - node = nodes[i]; - ri = radii[node.index], ri2 = ri * ri; - xi = node.x + node.vx; - yi = node.y + node.vy; - tree.visit(apply); - } - } +var tsvParse = tsv$1.parse; +var tsvParseRows = tsv$1.parseRows; +var tsvFormat = tsv$1.format; +var tsvFormatBody = tsv$1.formatBody; +var tsvFormatRows = tsv$1.formatRows; +var tsvFormatRow = tsv$1.formatRow; +var tsvFormatValue = tsv$1.formatValue; - function apply(quad, x0, y0, x1, y1) { - var data = quad.data, rj = quad.r, r = ri + rj; - if (data) { - if (data.index > node.index) { - var x = xi - data.x - data.vx, - y = yi - data.y - data.vy, - l = x * x + y * y; - if (l < r * r) { - if (x === 0) x = jiggle(), l += x * x; - if (y === 0) y = jiggle(), l += y * y; - l = (r - (l = Math.sqrt(l))) / l * strength; - node.vx += (x *= l) * (r = (rj *= rj) / (ri2 + rj)); - node.vy += (y *= l) * r; - data.vx -= x * (r = 1 - r); - data.vy -= y * r; - } - } - return; - } - return x0 > xi + r || x1 < xi - r || y0 > yi + r || y1 < yi - r; +function autoType(object) { + for (var key in object) { + var value = object[key].trim(), number, m; + if (!value) value = null; + else if (value === "true") value = true; + else if (value === "false") value = false; + else if (value === "NaN") value = NaN; + else if (!isNaN(number = +value)) value = number; + else if (m = value.match(/^([-+]\d{2})?\d{4}(-\d{2}(-\d{2})?)?(T\d{2}:\d{2}(:\d{2}(\.\d{3})?)?(Z|[-+]\d{2}:\d{2})?)?$/)) { + if (fixtz && !!m[4] && !m[7]) value = value.replace(/-/g, "/").replace(/T/, " "); + value = new Date(value); } + else continue; + object[key] = value; } + return object; +} - function prepare(quad) { - if (quad.data) return quad.r = radii[quad.data.index]; - for (var i = quad.r = 0; i < 4; ++i) { - if (quad[i] && quad[i].r > quad.r) { - quad.r = quad[i].r; - } - } - } +// https://github.com/d3/d3-dsv/issues/45 +const fixtz = new Date("2019-01-01T00:00").getHours() || new Date("2019-07-01T00:00").getHours(); - function initialize() { - if (!nodes) return; - var i, n = nodes.length, node; - radii = new Array(n); - for (i = 0; i < n; ++i) node = nodes[i], radii[node.index] = +radius(node, i, nodes); - } +function responseBlob(response) { + if (!response.ok) throw new Error(response.status + " " + response.statusText); + return response.blob(); +} - force.initialize = function(_) { - nodes = _; - initialize(); - }; +function blob(input, init) { + return fetch(input, init).then(responseBlob); +} - force.iterations = function(_) { - return arguments.length ? (iterations = +_, force) : iterations; - }; +function responseArrayBuffer(response) { + if (!response.ok) throw new Error(response.status + " " + response.statusText); + return response.arrayBuffer(); +} - force.strength = function(_) { - return arguments.length ? (strength = +_, force) : strength; - }; +function buffer(input, init) { + return fetch(input, init).then(responseArrayBuffer); +} - force.radius = function(_) { - return arguments.length ? (radius = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : radius; - }; +function responseText(response) { + if (!response.ok) throw new Error(response.status + " " + response.statusText); + return response.text(); +} - return force; +function text(input, init) { + return fetch(input, init).then(responseText); } -function index(d) { - return d.index; +function dsvParse(parse) { + return function(input, init, row) { + if (arguments.length === 2 && typeof init === "function") row = init, init = undefined; + return text(input, init).then(function(response) { + return parse(response, row); + }); + }; } -function find(nodeById, nodeId) { - var node = nodeById.get(nodeId); - if (!node) throw new Error("missing: " + nodeId); - return node; +function dsv(delimiter, input, init, row) { + if (arguments.length === 3 && typeof init === "function") row = init, init = undefined; + var format = dsvFormat(delimiter); + return text(input, init).then(function(response) { + return format.parse(response, row); + }); } -function link(links) { - var id = index, - strength = defaultStrength, - strengths, - distance = constant$7(30), - distances, - nodes, - count, - bias, - iterations = 1; +var csv = dsvParse(csvParse); +var tsv = dsvParse(tsvParse); - if (links == null) links = []; +function image(input, init) { + return new Promise(function(resolve, reject) { + var image = new Image; + for (var key in init) image[key] = init[key]; + image.onerror = reject; + image.onload = function() { resolve(image); }; + image.src = input; + }); +} - function defaultStrength(link) { - return 1 / Math.min(count[link.source.index], count[link.target.index]); - } +function responseJson(response) { + if (!response.ok) throw new Error(response.status + " " + response.statusText); + if (response.status === 204 || response.status === 205) return; + return response.json(); +} - function force(alpha) { - for (var k = 0, n = links.length; k < iterations; ++k) { - for (var i = 0, link, source, target, x, y, l, b; i < n; ++i) { - link = links[i], source = link.source, target = link.target; - x = target.x + target.vx - source.x - source.vx || jiggle(); - y = target.y + target.vy - source.y - source.vy || jiggle(); - l = Math.sqrt(x * x + y * y); - l = (l - distances[i]) / l * alpha * strengths[i]; - x *= l, y *= l; - target.vx -= x * (b = bias[i]); - target.vy -= y * b; - source.vx += x * (b = 1 - b); - source.vy += y * b; - } - } - } +function json(input, init) { + return fetch(input, init).then(responseJson); +} - function initialize() { - if (!nodes) return; +function parser(type) { + return (input, init) => text(input, init) + .then(text => (new DOMParser).parseFromString(text, type)); +} - var i, - n = nodes.length, - m = links.length, - nodeById = map$1(nodes, id), - link; +var xml = parser("application/xml"); - for (i = 0, count = new Array(n); i < m; ++i) { - link = links[i], link.index = i; - if (typeof link.source !== "object") link.source = find(nodeById, link.source); - if (typeof link.target !== "object") link.target = find(nodeById, link.target); - count[link.source.index] = (count[link.source.index] || 0) + 1; - count[link.target.index] = (count[link.target.index] || 0) + 1; - } +var html = parser("text/html"); - for (i = 0, bias = new Array(m); i < m; ++i) { - link = links[i], bias[i] = count[link.source.index] / (count[link.source.index] + count[link.target.index]); - } +var svg = parser("image/svg+xml"); - strengths = new Array(m), initializeStrength(); - distances = new Array(m), initializeDistance(); - } +function center(x, y) { + var nodes, strength = 1; - function initializeStrength() { - if (!nodes) return; + if (x == null) x = 0; + if (y == null) y = 0; - for (var i = 0, n = links.length; i < n; ++i) { - strengths[i] = +strength(links[i], i, links); - } - } + function force() { + var i, + n = nodes.length, + node, + sx = 0, + sy = 0; - function initializeDistance() { - if (!nodes) return; + for (i = 0; i < n; ++i) { + node = nodes[i], sx += node.x, sy += node.y; + } - for (var i = 0, n = links.length; i < n; ++i) { - distances[i] = +distance(links[i], i, links); + for (sx = (sx / n - x) * strength, sy = (sy / n - y) * strength, i = 0; i < n; ++i) { + node = nodes[i], node.x -= sx, node.y -= sy; } } force.initialize = function(_) { nodes = _; - initialize(); }; - force.links = function(_) { - return arguments.length ? (links = _, initialize(), force) : links; - }; - - force.id = function(_) { - return arguments.length ? (id = _, force) : id; + force.x = function(_) { + return arguments.length ? (x = +_, force) : x; }; - force.iterations = function(_) { - return arguments.length ? (iterations = +_, force) : iterations; + force.y = function(_) { + return arguments.length ? (y = +_, force) : y; }; force.strength = function(_) { - return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initializeStrength(), force) : strength; - }; - - force.distance = function(_) { - return arguments.length ? (distance = typeof _ === "function" ? _ : constant$7(+_), initializeDistance(), force) : distance; + return arguments.length ? (strength = +_, force) : strength; }; return force; } -function x$1(d) { - return d.x; +function tree_add(d) { + const x = +this._x.call(null, d), + y = +this._y.call(null, d); + return add(this.cover(x, y), x, y, d); } -function y$1(d) { - return d.y; -} +function add(tree, x, y, d) { + if (isNaN(x) || isNaN(y)) return tree; // ignore invalid points -var initialRadius = 10, - initialAngle = Math.PI * (3 - Math.sqrt(5)); + var parent, + node = tree._root, + leaf = {data: d}, + x0 = tree._x0, + y0 = tree._y0, + x1 = tree._x1, + y1 = tree._y1, + xm, + ym, + xp, + yp, + right, + bottom, + i, + j; -function simulation(nodes) { - var simulation, - alpha = 1, - alphaMin = 0.001, - alphaDecay = 1 - Math.pow(alphaMin, 1 / 300), - alphaTarget = 0, - velocityDecay = 0.6, - forces = map$1(), - stepper = timer(step), - event = dispatch("tick", "end"); - - if (nodes == null) nodes = []; + // If the tree is empty, initialize the root as a leaf. + if (!node) return tree._root = leaf, tree; - function step() { - tick(); - event.call("tick", simulation); - if (alpha < alphaMin) { - stepper.stop(); - event.call("end", simulation); - } + // Find the existing leaf for the new point, or add it. + while (node.length) { + if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; + if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; + if (parent = node, !(node = node[i = bottom << 1 | right])) return parent[i] = leaf, tree; } - function tick(iterations) { - var i, n = nodes.length, node; + // Is the new point is exactly coincident with the existing point? + xp = +tree._x.call(null, node.data); + yp = +tree._y.call(null, node.data); + if (x === xp && y === yp) return leaf.next = node, parent ? parent[i] = leaf : tree._root = leaf, tree; - if (iterations === undefined) iterations = 1; + // Otherwise, split the leaf node until the old and new point are separated. + do { + parent = parent ? parent[i] = new Array(4) : tree._root = new Array(4); + if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; + if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; + } while ((i = bottom << 1 | right) === (j = (yp >= ym) << 1 | (xp >= xm))); + return parent[j] = node, parent[i] = leaf, tree; +} - for (var k = 0; k < iterations; ++k) { - alpha += (alphaTarget - alpha) * alphaDecay; +function addAll(data) { + var d, i, n = data.length, + x, + y, + xz = new Array(n), + yz = new Array(n), + x0 = Infinity, + y0 = Infinity, + x1 = -Infinity, + y1 = -Infinity; - forces.each(function (force) { - force(alpha); - }); + // Compute the points and their extent. + for (i = 0; i < n; ++i) { + if (isNaN(x = +this._x.call(null, d = data[i])) || isNaN(y = +this._y.call(null, d))) continue; + xz[i] = x; + yz[i] = y; + if (x < x0) x0 = x; + if (x > x1) x1 = x; + if (y < y0) y0 = y; + if (y > y1) y1 = y; + } - for (i = 0; i < n; ++i) { - node = nodes[i]; - if (node.fx == null) node.x += node.vx *= velocityDecay; - else node.x = node.fx, node.vx = 0; - if (node.fy == null) node.y += node.vy *= velocityDecay; - else node.y = node.fy, node.vy = 0; - } - } + // If there were no (valid) points, abort. + if (x0 > x1 || y0 > y1) return this; - return simulation; - } + // Expand the tree to cover the new points. + this.cover(x0, y0).cover(x1, y1); - function initializeNodes() { - for (var i = 0, n = nodes.length, node; i < n; ++i) { - node = nodes[i], node.index = i; - if (node.fx != null) node.x = node.fx; - if (node.fy != null) node.y = node.fy; - if (isNaN(node.x) || isNaN(node.y)) { - var radius = initialRadius * Math.sqrt(i), angle = i * initialAngle; - node.x = radius * Math.cos(angle); - node.y = radius * Math.sin(angle); - } - if (isNaN(node.vx) || isNaN(node.vy)) { - node.vx = node.vy = 0; - } - } + // Add the new points. + for (i = 0; i < n; ++i) { + add(this, xz[i], yz[i], data[i]); } - function initializeForce(force) { - if (force.initialize) force.initialize(nodes); - return force; + return this; +} + +function tree_cover(x, y) { + if (isNaN(x = +x) || isNaN(y = +y)) return this; // ignore invalid points + + var x0 = this._x0, + y0 = this._y0, + x1 = this._x1, + y1 = this._y1; + + // If the quadtree has no extent, initialize them. + // Integer extent are necessary so that if we later double the extent, + // the existing quadrant boundaries don’t change due to floating point error! + if (isNaN(x0)) { + x1 = (x0 = Math.floor(x)) + 1; + y1 = (y0 = Math.floor(y)) + 1; } - initializeNodes(); + // Otherwise, double repeatedly to cover. + else { + var z = x1 - x0 || 1, + node = this._root, + parent, + i; - return simulation = { - tick: tick, + while (x0 > x || x >= x1 || y0 > y || y >= y1) { + i = (y < y0) << 1 | (x < x0); + parent = new Array(4), parent[i] = node, node = parent, z *= 2; + switch (i) { + case 0: x1 = x0 + z, y1 = y0 + z; break; + case 1: x0 = x1 - z, y1 = y0 + z; break; + case 2: x1 = x0 + z, y0 = y1 - z; break; + case 3: x0 = x1 - z, y0 = y1 - z; break; + } + } - restart: function() { - return stepper.restart(step), simulation; - }, + if (this._root && this._root.length) this._root = node; + } - stop: function() { - return stepper.stop(), simulation; - }, + this._x0 = x0; + this._y0 = y0; + this._x1 = x1; + this._y1 = y1; + return this; +} - nodes: function(_) { - return arguments.length ? (nodes = _, initializeNodes(), forces.each(initializeForce), simulation) : nodes; - }, +function tree_data() { + var data = []; + this.visit(function(node) { + if (!node.length) do data.push(node.data); while (node = node.next) + }); + return data; +} - alpha: function(_) { - return arguments.length ? (alpha = +_, simulation) : alpha; - }, +function tree_extent(_) { + return arguments.length + ? this.cover(+_[0][0], +_[0][1]).cover(+_[1][0], +_[1][1]) + : isNaN(this._x0) ? undefined : [[this._x0, this._y0], [this._x1, this._y1]]; +} - alphaMin: function(_) { - return arguments.length ? (alphaMin = +_, simulation) : alphaMin; - }, +function Quad(node, x0, y0, x1, y1) { + this.node = node; + this.x0 = x0; + this.y0 = y0; + this.x1 = x1; + this.y1 = y1; +} - alphaDecay: function(_) { - return arguments.length ? (alphaDecay = +_, simulation) : +alphaDecay; - }, +function tree_find(x, y, radius) { + var data, + x0 = this._x0, + y0 = this._y0, + x1, + y1, + x2, + y2, + x3 = this._x1, + y3 = this._y1, + quads = [], + node = this._root, + q, + i; - alphaTarget: function(_) { - return arguments.length ? (alphaTarget = +_, simulation) : alphaTarget; - }, + if (node) quads.push(new Quad(node, x0, y0, x3, y3)); + if (radius == null) radius = Infinity; + else { + x0 = x - radius, y0 = y - radius; + x3 = x + radius, y3 = y + radius; + radius *= radius; + } - velocityDecay: function(_) { - return arguments.length ? (velocityDecay = 1 - _, simulation) : 1 - velocityDecay; - }, + while (q = quads.pop()) { - force: function(name, _) { - return arguments.length > 1 ? ((_ == null ? forces.remove(name) : forces.set(name, initializeForce(_))), simulation) : forces.get(name); - }, + // Stop searching if this quadrant can’t contain a closer node. + if (!(node = q.node) + || (x1 = q.x0) > x3 + || (y1 = q.y0) > y3 + || (x2 = q.x1) < x0 + || (y2 = q.y1) < y0) continue; - find: function(x, y, radius) { - var i = 0, - n = nodes.length, - dx, - dy, - d2, - node, - closest; + // Bisect the current quadrant. + if (node.length) { + var xm = (x1 + x2) / 2, + ym = (y1 + y2) / 2; - if (radius == null) radius = Infinity; - else radius *= radius; + quads.push( + new Quad(node[3], xm, ym, x2, y2), + new Quad(node[2], x1, ym, xm, y2), + new Quad(node[1], xm, y1, x2, ym), + new Quad(node[0], x1, y1, xm, ym) + ); - for (i = 0; i < n; ++i) { - node = nodes[i]; - dx = x - node.x; - dy = y - node.y; - d2 = dx * dx + dy * dy; - if (d2 < radius) closest = node, radius = d2; + // Visit the closest quadrant first. + if (i = (y >= ym) << 1 | (x >= xm)) { + q = quads[quads.length - 1]; + quads[quads.length - 1] = quads[quads.length - 1 - i]; + quads[quads.length - 1 - i] = q; } + } - return closest; - }, - - on: function(name, _) { - return arguments.length > 1 ? (event.on(name, _), simulation) : event.on(name); + // Visit this point. (Visiting coincident points isn’t necessary!) + else { + var dx = x - +this._x.call(null, node.data), + dy = y - +this._y.call(null, node.data), + d2 = dx * dx + dy * dy; + if (d2 < radius) { + var d = Math.sqrt(radius = d2); + x0 = x - d, y0 = y - d; + x3 = x + d, y3 = y + d; + data = node.data; + } } - }; + } + + return data; } -function manyBody() { - var nodes, - node, - alpha, - strength = constant$7(-30), - strengths, - distanceMin2 = 1, - distanceMax2 = Infinity, - theta2 = 0.81; - - function force(_) { - var i, n = nodes.length, tree = quadtree(nodes, x$1, y$1).visitAfter(accumulate); - for (alpha = _, i = 0; i < n; ++i) node = nodes[i], tree.visit(apply); - } - - function initialize() { - if (!nodes) return; - var i, n = nodes.length, node; - strengths = new Array(n); - for (i = 0; i < n; ++i) node = nodes[i], strengths[node.index] = +strength(node, i, nodes); - } - - function accumulate(quad) { - var strength = 0, q, c, weight = 0, x, y, i; +function tree_remove(d) { + if (isNaN(x = +this._x.call(null, d)) || isNaN(y = +this._y.call(null, d))) return this; // ignore invalid points - // For internal nodes, accumulate forces from child quadrants. - if (quad.length) { - for (x = y = i = 0; i < 4; ++i) { - if ((q = quad[i]) && (c = Math.abs(q.value))) { - strength += q.value, weight += c, x += c * q.x, y += c * q.y; - } - } - quad.x = x / weight; - quad.y = y / weight; - } + var parent, + node = this._root, + retainer, + previous, + next, + x0 = this._x0, + y0 = this._y0, + x1 = this._x1, + y1 = this._y1, + x, + y, + xm, + ym, + right, + bottom, + i, + j; - // For leaf nodes, accumulate forces from coincident quadrants. - else { - q = quad; - q.x = q.data.x; - q.y = q.data.y; - do strength += strengths[q.data.index]; - while (q = q.next); - } + // If the tree is empty, initialize the root as a leaf. + if (!node) return this; - quad.value = strength; + // Find the leaf node for the point. + // While descending, also retain the deepest parent with a non-removed sibling. + if (node.length) while (true) { + if (right = x >= (xm = (x0 + x1) / 2)) x0 = xm; else x1 = xm; + if (bottom = y >= (ym = (y0 + y1) / 2)) y0 = ym; else y1 = ym; + if (!(parent = node, node = node[i = bottom << 1 | right])) return this; + if (!node.length) break; + if (parent[(i + 1) & 3] || parent[(i + 2) & 3] || parent[(i + 3) & 3]) retainer = parent, j = i; } - function apply(quad, x1, _, x2) { - if (!quad.value) return true; - - var x = quad.x - node.x, - y = quad.y - node.y, - w = x2 - x1, - l = x * x + y * y; + // Find the point to remove. + while (node.data !== d) if (!(previous = node, node = node.next)) return this; + if (next = node.next) delete node.next; - // Apply the Barnes-Hut approximation if possible. - // Limit forces for very close nodes; randomize direction if coincident. - if (w * w / theta2 < l) { - if (l < distanceMax2) { - if (x === 0) x = jiggle(), l += x * x; - if (y === 0) y = jiggle(), l += y * y; - if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l); - node.vx += x * quad.value * alpha / l; - node.vy += y * quad.value * alpha / l; - } - return true; - } + // If there are multiple coincident points, remove just the point. + if (previous) return (next ? previous.next = next : delete previous.next), this; - // Otherwise, process points directly. - else if (quad.length || l >= distanceMax2) return; + // If this is the root point, remove it. + if (!parent) return this._root = next, this; - // Limit forces for very close nodes; randomize direction if coincident. - if (quad.data !== node || quad.next) { - if (x === 0) x = jiggle(), l += x * x; - if (y === 0) y = jiggle(), l += y * y; - if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l); - } + // Remove this leaf. + next ? parent[i] = next : delete parent[i]; - do if (quad.data !== node) { - w = strengths[quad.data.index] * alpha / l; - node.vx += x * w; - node.vy += y * w; - } while (quad = quad.next); + // If the parent now contains exactly one leaf, collapse superfluous parents. + if ((node = parent[0] || parent[1] || parent[2] || parent[3]) + && node === (parent[3] || parent[2] || parent[1] || parent[0]) + && !node.length) { + if (retainer) retainer[j] = node; + else this._root = node; } - force.initialize = function(_) { - nodes = _; - initialize(); - }; - - force.strength = function(_) { - return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : strength; - }; - - force.distanceMin = function(_) { - return arguments.length ? (distanceMin2 = _ * _, force) : Math.sqrt(distanceMin2); - }; - - force.distanceMax = function(_) { - return arguments.length ? (distanceMax2 = _ * _, force) : Math.sqrt(distanceMax2); - }; - - force.theta = function(_) { - return arguments.length ? (theta2 = _ * _, force) : Math.sqrt(theta2); - }; + return this; +} - return force; +function removeAll(data) { + for (var i = 0, n = data.length; i < n; ++i) this.remove(data[i]); + return this; } -function radial(radius, x, y) { - var nodes, - strength = constant$7(0.1), - strengths, - radiuses; +function tree_root() { + return this._root; +} - if (typeof radius !== "function") radius = constant$7(+radius); - if (x == null) x = 0; - if (y == null) y = 0; +function tree_size() { + var size = 0; + this.visit(function(node) { + if (!node.length) do ++size; while (node = node.next) + }); + return size; +} - function force(alpha) { - for (var i = 0, n = nodes.length; i < n; ++i) { - var node = nodes[i], - dx = node.x - x || 1e-6, - dy = node.y - y || 1e-6, - r = Math.sqrt(dx * dx + dy * dy), - k = (radiuses[i] - r) * strengths[i] * alpha / r; - node.vx += dx * k; - node.vy += dy * k; +function tree_visit(callback) { + var quads = [], q, node = this._root, child, x0, y0, x1, y1; + if (node) quads.push(new Quad(node, this._x0, this._y0, this._x1, this._y1)); + while (q = quads.pop()) { + if (!callback(node = q.node, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1) && node.length) { + var xm = (x0 + x1) / 2, ym = (y0 + y1) / 2; + if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1)); + if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1)); + if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym)); + if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym)); } } + return this; +} - function initialize() { - if (!nodes) return; - var i, n = nodes.length; - strengths = new Array(n); - radiuses = new Array(n); - for (i = 0; i < n; ++i) { - radiuses[i] = +radius(nodes[i], i, nodes); - strengths[i] = isNaN(radiuses[i]) ? 0 : +strength(nodes[i], i, nodes); +function tree_visitAfter(callback) { + var quads = [], next = [], q; + if (this._root) quads.push(new Quad(this._root, this._x0, this._y0, this._x1, this._y1)); + while (q = quads.pop()) { + var node = q.node; + if (node.length) { + var child, x0 = q.x0, y0 = q.y0, x1 = q.x1, y1 = q.y1, xm = (x0 + x1) / 2, ym = (y0 + y1) / 2; + if (child = node[0]) quads.push(new Quad(child, x0, y0, xm, ym)); + if (child = node[1]) quads.push(new Quad(child, xm, y0, x1, ym)); + if (child = node[2]) quads.push(new Quad(child, x0, ym, xm, y1)); + if (child = node[3]) quads.push(new Quad(child, xm, ym, x1, y1)); } + next.push(q); + } + while (q = next.pop()) { + callback(q.node, q.x0, q.y0, q.x1, q.y1); } + return this; +} - force.initialize = function(_) { - nodes = _, initialize(); - }; +function defaultX(d) { + return d[0]; +} - force.strength = function(_) { - return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : strength; - }; +function tree_x(_) { + return arguments.length ? (this._x = _, this) : this._x; +} - force.radius = function(_) { - return arguments.length ? (radius = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : radius; - }; +function defaultY(d) { + return d[1]; +} - force.x = function(_) { - return arguments.length ? (x = +_, force) : x; - }; +function tree_y(_) { + return arguments.length ? (this._y = _, this) : this._y; +} - force.y = function(_) { - return arguments.length ? (y = +_, force) : y; - }; +function quadtree(nodes, x, y) { + var tree = new Quadtree(x == null ? defaultX : x, y == null ? defaultY : y, NaN, NaN, NaN, NaN); + return nodes == null ? tree : tree.addAll(nodes); +} - return force; +function Quadtree(x, y, x0, y0, x1, y1) { + this._x = x; + this._y = y; + this._x0 = x0; + this._y0 = y0; + this._x1 = x1; + this._y1 = y1; + this._root = undefined; +} + +function leaf_copy(leaf) { + var copy = {data: leaf.data}, next = copy; + while (leaf = leaf.next) next = next.next = {data: leaf.data}; + return copy; } -function x$2(x) { - var strength = constant$7(0.1), +var treeProto = quadtree.prototype = Quadtree.prototype; + +treeProto.copy = function() { + var copy = new Quadtree(this._x, this._y, this._x0, this._y0, this._x1, this._y1), + node = this._root, nodes, - strengths, - xz; + child; - if (typeof x !== "function") x = constant$7(x == null ? 0 : +x); + if (!node) return copy; - function force(alpha) { - for (var i = 0, n = nodes.length, node; i < n; ++i) { - node = nodes[i], node.vx += (xz[i] - node.x) * strengths[i] * alpha; - } - } + if (!node.length) return copy._root = leaf_copy(node), copy; + + nodes = [{source: node, target: copy._root = new Array(4)}]; + while (node = nodes.pop()) { + for (var i = 0; i < 4; ++i) { + if (child = node.source[i]) { + if (child.length) nodes.push({source: child, target: node.target[i] = new Array(4)}); + else node.target[i] = leaf_copy(child); + } + } + } + + return copy; +}; + +treeProto.add = tree_add; +treeProto.addAll = addAll; +treeProto.cover = tree_cover; +treeProto.data = tree_data; +treeProto.extent = tree_extent; +treeProto.find = tree_find; +treeProto.remove = tree_remove; +treeProto.removeAll = removeAll; +treeProto.root = tree_root; +treeProto.size = tree_size; +treeProto.visit = tree_visit; +treeProto.visitAfter = tree_visitAfter; +treeProto.x = tree_x; +treeProto.y = tree_y; + +function constant$4(x) { + return function() { + return x; + }; +} + +function jiggle(random) { + return (random() - 0.5) * 1e-6; +} + +function x$3(d) { + return d.x + d.vx; +} + +function y$3(d) { + return d.y + d.vy; +} + +function collide(radius) { + var nodes, + radii, + random, + strength = 1, + iterations = 1; + + if (typeof radius !== "function") radius = constant$4(radius == null ? 1 : +radius); + + function force() { + var i, n = nodes.length, + tree, + node, + xi, + yi, + ri, + ri2; + + for (var k = 0; k < iterations; ++k) { + tree = quadtree(nodes, x$3, y$3).visitAfter(prepare); + for (i = 0; i < n; ++i) { + node = nodes[i]; + ri = radii[node.index], ri2 = ri * ri; + xi = node.x + node.vx; + yi = node.y + node.vy; + tree.visit(apply); + } + } + + function apply(quad, x0, y0, x1, y1) { + var data = quad.data, rj = quad.r, r = ri + rj; + if (data) { + if (data.index > node.index) { + var x = xi - data.x - data.vx, + y = yi - data.y - data.vy, + l = x * x + y * y; + if (l < r * r) { + if (x === 0) x = jiggle(random), l += x * x; + if (y === 0) y = jiggle(random), l += y * y; + l = (r - (l = Math.sqrt(l))) / l * strength; + node.vx += (x *= l) * (r = (rj *= rj) / (ri2 + rj)); + node.vy += (y *= l) * r; + data.vx -= x * (r = 1 - r); + data.vy -= y * r; + } + } + return; + } + return x0 > xi + r || x1 < xi - r || y0 > yi + r || y1 < yi - r; + } + } + + function prepare(quad) { + if (quad.data) return quad.r = radii[quad.data.index]; + for (var i = quad.r = 0; i < 4; ++i) { + if (quad[i] && quad[i].r > quad.r) { + quad.r = quad[i].r; + } + } + } function initialize() { if (!nodes) return; - var i, n = nodes.length; - strengths = new Array(n); - xz = new Array(n); - for (i = 0; i < n; ++i) { - strengths[i] = isNaN(xz[i] = +x(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes); - } + var i, n = nodes.length, node; + radii = new Array(n); + for (i = 0; i < n; ++i) node = nodes[i], radii[node.index] = +radius(node, i, nodes); } - force.initialize = function(_) { - nodes = _; + force.initialize = function(_nodes, _random) { + nodes = _nodes; + random = _random; initialize(); }; + force.iterations = function(_) { + return arguments.length ? (iterations = +_, force) : iterations; + }; + force.strength = function(_) { - return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : strength; + return arguments.length ? (strength = +_, force) : strength; }; - force.x = function(_) { - return arguments.length ? (x = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : x; + force.radius = function(_) { + return arguments.length ? (radius = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : radius; }; return force; } -function y$2(y) { - var strength = constant$7(0.1), - nodes, +function index$3(d) { + return d.index; +} + +function find(nodeById, nodeId) { + var node = nodeById.get(nodeId); + if (!node) throw new Error("node not found: " + nodeId); + return node; +} + +function link$2(links) { + var id = index$3, + strength = defaultStrength, strengths, - yz; + distance = constant$4(30), + distances, + nodes, + count, + bias, + random, + iterations = 1; - if (typeof y !== "function") y = constant$7(y == null ? 0 : +y); + if (links == null) links = []; + + function defaultStrength(link) { + return 1 / Math.min(count[link.source.index], count[link.target.index]); + } function force(alpha) { - for (var i = 0, n = nodes.length, node; i < n; ++i) { - node = nodes[i], node.vy += (yz[i] - node.y) * strengths[i] * alpha; + for (var k = 0, n = links.length; k < iterations; ++k) { + for (var i = 0, link, source, target, x, y, l, b; i < n; ++i) { + link = links[i], source = link.source, target = link.target; + x = target.x + target.vx - source.x - source.vx || jiggle(random); + y = target.y + target.vy - source.y - source.vy || jiggle(random); + l = Math.sqrt(x * x + y * y); + l = (l - distances[i]) / l * alpha * strengths[i]; + x *= l, y *= l; + target.vx -= x * (b = bias[i]); + target.vy -= y * b; + source.vx += x * (b = 1 - b); + source.vy += y * b; + } } } function initialize() { if (!nodes) return; - var i, n = nodes.length; - strengths = new Array(n); - yz = new Array(n); - for (i = 0; i < n; ++i) { - strengths[i] = isNaN(yz[i] = +y(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes); + + var i, + n = nodes.length, + m = links.length, + nodeById = new Map(nodes.map((d, i) => [id(d, i, nodes), d])), + link; + + for (i = 0, count = new Array(n); i < m; ++i) { + link = links[i], link.index = i; + if (typeof link.source !== "object") link.source = find(nodeById, link.source); + if (typeof link.target !== "object") link.target = find(nodeById, link.target); + count[link.source.index] = (count[link.source.index] || 0) + 1; + count[link.target.index] = (count[link.target.index] || 0) + 1; + } + + for (i = 0, bias = new Array(m); i < m; ++i) { + link = links[i], bias[i] = count[link.source.index] / (count[link.source.index] + count[link.target.index]); } + + strengths = new Array(m), initializeStrength(); + distances = new Array(m), initializeDistance(); } - force.initialize = function(_) { - nodes = _; + function initializeStrength() { + if (!nodes) return; + + for (var i = 0, n = links.length; i < n; ++i) { + strengths[i] = +strength(links[i], i, links); + } + } + + function initializeDistance() { + if (!nodes) return; + + for (var i = 0, n = links.length; i < n; ++i) { + distances[i] = +distance(links[i], i, links); + } + } + + force.initialize = function(_nodes, _random) { + nodes = _nodes; + random = _random; initialize(); }; + force.links = function(_) { + return arguments.length ? (links = _, initialize(), force) : links; + }; + + force.id = function(_) { + return arguments.length ? (id = _, force) : id; + }; + + force.iterations = function(_) { + return arguments.length ? (iterations = +_, force) : iterations; + }; + force.strength = function(_) { - return arguments.length ? (strength = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : strength; + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$4(+_), initializeStrength(), force) : strength; }; - force.y = function(_) { - return arguments.length ? (y = typeof _ === "function" ? _ : constant$7(+_), initialize(), force) : y; + force.distance = function(_) { + return arguments.length ? (distance = typeof _ === "function" ? _ : constant$4(+_), initializeDistance(), force) : distance; }; return force; } -// Computes the decimal coefficient and exponent of the specified number x with -// significant digits p, where x is positive and p is in [1, 21] or undefined. -// For example, formatDecimal(1.23) returns ["123", 0]. -function formatDecimal(x, p) { - if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf("e")) < 0) return null; // NaN, ±Infinity - var i, coefficient = x.slice(0, i); +// https://en.wikipedia.org/wiki/Linear_congruential_generator#Parameters_in_common_use +const a$1 = 1664525; +const c$3 = 1013904223; +const m = 4294967296; // 2^32 - // The string returned by toExponential either has the form \d\.\d+e[-+]\d+ - // (e.g., 1.2e+3) or the form \de[-+]\d+ (e.g., 1e+3). - return [ - coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient, - +x.slice(i + 1) - ]; +function lcg$1() { + let s = 1; + return () => (s = (a$1 * s + c$3) % m) / m; } -function exponent$1(x) { - return x = formatDecimal(Math.abs(x)), x ? x[1] : NaN; +function x$2(d) { + return d.x; } -function formatGroup(grouping, thousands) { - return function(value, width) { - var i = value.length, - t = [], - j = 0, - g = grouping[0], - length = 0; - - while (i > 0 && g > 0) { - if (length + g + 1 > width) g = Math.max(1, width - length); - t.push(value.substring(i -= g, i + g)); - if ((length += g + 1) > width) break; - g = grouping[j = (j + 1) % grouping.length]; - } - - return t.reverse().join(thousands); - }; +function y$2(d) { + return d.y; } -function formatNumerals(numerals) { - return function(value) { - return value.replace(/[0-9]/g, function(i) { - return numerals[+i]; - }); - }; -} +var initialRadius = 10, + initialAngle = Math.PI * (3 - Math.sqrt(5)); -// [[fill]align][sign][symbol][0][width][,][.precision][~][type] -var re = /^(?:(.)?([<>=^]))?([+\-( ])?([$#])?(0)?(\d+)?(,)?(\.\d+)?(~)?([a-z%])?$/i; +function simulation(nodes) { + var simulation, + alpha = 1, + alphaMin = 0.001, + alphaDecay = 1 - Math.pow(alphaMin, 1 / 300), + alphaTarget = 0, + velocityDecay = 0.6, + forces = new Map(), + stepper = timer(step), + event = dispatch("tick", "end"), + random = lcg$1(); -function formatSpecifier(specifier) { - if (!(match = re.exec(specifier))) throw new Error("invalid format: " + specifier); - var match; - return new FormatSpecifier({ - fill: match[1], - align: match[2], - sign: match[3], - symbol: match[4], - zero: match[5], - width: match[6], - comma: match[7], - precision: match[8] && match[8].slice(1), - trim: match[9], - type: match[10] - }); -} - -formatSpecifier.prototype = FormatSpecifier.prototype; // instanceof - -function FormatSpecifier(specifier) { - this.fill = specifier.fill === undefined ? " " : specifier.fill + ""; - this.align = specifier.align === undefined ? ">" : specifier.align + ""; - this.sign = specifier.sign === undefined ? "-" : specifier.sign + ""; - this.symbol = specifier.symbol === undefined ? "" : specifier.symbol + ""; - this.zero = !!specifier.zero; - this.width = specifier.width === undefined ? undefined : +specifier.width; - this.comma = !!specifier.comma; - this.precision = specifier.precision === undefined ? undefined : +specifier.precision; - this.trim = !!specifier.trim; - this.type = specifier.type === undefined ? "" : specifier.type + ""; -} - -FormatSpecifier.prototype.toString = function() { - return this.fill - + this.align - + this.sign - + this.symbol - + (this.zero ? "0" : "") - + (this.width === undefined ? "" : Math.max(1, this.width | 0)) - + (this.comma ? "," : "") - + (this.precision === undefined ? "" : "." + Math.max(0, this.precision | 0)) - + (this.trim ? "~" : "") - + this.type; -}; + if (nodes == null) nodes = []; -// Trims insignificant zeros, e.g., replaces 1.2000k with 1.2k. -function formatTrim(s) { - out: for (var n = s.length, i = 1, i0 = -1, i1; i < n; ++i) { - switch (s[i]) { - case ".": i0 = i1 = i; break; - case "0": if (i0 === 0) i0 = i; i1 = i; break; - default: if (!+s[i]) break out; if (i0 > 0) i0 = 0; break; + function step() { + tick(); + event.call("tick", simulation); + if (alpha < alphaMin) { + stepper.stop(); + event.call("end", simulation); } } - return i0 > 0 ? s.slice(0, i0) + s.slice(i1 + 1) : s; -} -var prefixExponent; + function tick(iterations) { + var i, n = nodes.length, node; -function formatPrefixAuto(x, p) { - var d = formatDecimal(x, p); - if (!d) return x + ""; - var coefficient = d[0], - exponent = d[1], - i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1, - n = coefficient.length; - return i === n ? coefficient - : i > n ? coefficient + new Array(i - n + 1).join("0") - : i > 0 ? coefficient.slice(0, i) + "." + coefficient.slice(i) - : "0." + new Array(1 - i).join("0") + formatDecimal(x, Math.max(0, p + i - 1))[0]; // less than 1y! -} + if (iterations === undefined) iterations = 1; -function formatRounded(x, p) { - var d = formatDecimal(x, p); - if (!d) return x + ""; - var coefficient = d[0], - exponent = d[1]; - return exponent < 0 ? "0." + new Array(-exponent).join("0") + coefficient - : coefficient.length > exponent + 1 ? coefficient.slice(0, exponent + 1) + "." + coefficient.slice(exponent + 1) - : coefficient + new Array(exponent - coefficient.length + 2).join("0"); -} + for (var k = 0; k < iterations; ++k) { + alpha += (alphaTarget - alpha) * alphaDecay; -var formatTypes = { - "%": function(x, p) { return (x * 100).toFixed(p); }, - "b": function(x) { return Math.round(x).toString(2); }, - "c": function(x) { return x + ""; }, - "d": function(x) { return Math.round(x).toString(10); }, - "e": function(x, p) { return x.toExponential(p); }, - "f": function(x, p) { return x.toFixed(p); }, - "g": function(x, p) { return x.toPrecision(p); }, - "o": function(x) { return Math.round(x).toString(8); }, - "p": function(x, p) { return formatRounded(x * 100, p); }, - "r": formatRounded, - "s": formatPrefixAuto, - "X": function(x) { return Math.round(x).toString(16).toUpperCase(); }, - "x": function(x) { return Math.round(x).toString(16); } -}; + forces.forEach(function(force) { + force(alpha); + }); -function identity$3(x) { - return x; -} + for (i = 0; i < n; ++i) { + node = nodes[i]; + if (node.fx == null) node.x += node.vx *= velocityDecay; + else node.x = node.fx, node.vx = 0; + if (node.fy == null) node.y += node.vy *= velocityDecay; + else node.y = node.fy, node.vy = 0; + } + } -var map$2 = Array.prototype.map, - prefixes = ["y","z","a","f","p","n","\xB5","m","","k","M","G","T","P","E","Z","Y"]; + return simulation; + } -function formatLocale(locale) { - var group = locale.grouping === undefined || locale.thousands === undefined ? identity$3 : formatGroup(map$2.call(locale.grouping, Number), locale.thousands + ""), - currencyPrefix = locale.currency === undefined ? "" : locale.currency[0] + "", - currencySuffix = locale.currency === undefined ? "" : locale.currency[1] + "", - decimal = locale.decimal === undefined ? "." : locale.decimal + "", - numerals = locale.numerals === undefined ? identity$3 : formatNumerals(map$2.call(locale.numerals, String)), - percent = locale.percent === undefined ? "%" : locale.percent + "", - minus = locale.minus === undefined ? "-" : locale.minus + "", - nan = locale.nan === undefined ? "NaN" : locale.nan + ""; + function initializeNodes() { + for (var i = 0, n = nodes.length, node; i < n; ++i) { + node = nodes[i], node.index = i; + if (node.fx != null) node.x = node.fx; + if (node.fy != null) node.y = node.fy; + if (isNaN(node.x) || isNaN(node.y)) { + var radius = initialRadius * Math.sqrt(0.5 + i), angle = i * initialAngle; + node.x = radius * Math.cos(angle); + node.y = radius * Math.sin(angle); + } + if (isNaN(node.vx) || isNaN(node.vy)) { + node.vx = node.vy = 0; + } + } + } - function newFormat(specifier) { - specifier = formatSpecifier(specifier); + function initializeForce(force) { + if (force.initialize) force.initialize(nodes, random); + return force; + } - var fill = specifier.fill, - align = specifier.align, - sign = specifier.sign, - symbol = specifier.symbol, - zero = specifier.zero, - width = specifier.width, - comma = specifier.comma, - precision = specifier.precision, - trim = specifier.trim, - type = specifier.type; + initializeNodes(); - // The "n" type is an alias for ",g". - if (type === "n") comma = true, type = "g"; + return simulation = { + tick: tick, - // The "" type, and any invalid type, is an alias for ".12~g". - else if (!formatTypes[type]) precision === undefined && (precision = 12), trim = true, type = "g"; + restart: function() { + return stepper.restart(step), simulation; + }, - // If zero fill is specified, padding goes after sign and before digits. - if (zero || (fill === "0" && align === "=")) zero = true, fill = "0", align = "="; + stop: function() { + return stepper.stop(), simulation; + }, - // Compute the prefix and suffix. - // For SI-prefix, the suffix is lazily computed. - var prefix = symbol === "$" ? currencyPrefix : symbol === "#" && /[boxX]/.test(type) ? "0" + type.toLowerCase() : "", - suffix = symbol === "$" ? currencySuffix : /[%p]/.test(type) ? percent : ""; + nodes: function(_) { + return arguments.length ? (nodes = _, initializeNodes(), forces.forEach(initializeForce), simulation) : nodes; + }, - // What format function should we use? - // Is this an integer type? - // Can this type generate exponential notation? - var formatType = formatTypes[type], - maybeSuffix = /[defgprs%]/.test(type); + alpha: function(_) { + return arguments.length ? (alpha = +_, simulation) : alpha; + }, - // Set the default precision if not specified, - // or clamp the specified precision to the supported range. - // For significant precision, it must be in [1, 21]. - // For fixed precision, it must be in [0, 20]. - precision = precision === undefined ? 6 - : /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision)) - : Math.max(0, Math.min(20, precision)); + alphaMin: function(_) { + return arguments.length ? (alphaMin = +_, simulation) : alphaMin; + }, - function format(value) { - var valuePrefix = prefix, - valueSuffix = suffix, - i, n, c; + alphaDecay: function(_) { + return arguments.length ? (alphaDecay = +_, simulation) : +alphaDecay; + }, - if (type === "c") { - valueSuffix = formatType(value) + valueSuffix; - value = ""; - } else { - value = +value; + alphaTarget: function(_) { + return arguments.length ? (alphaTarget = +_, simulation) : alphaTarget; + }, - // Determine the sign. -0 is not less than 0, but 1 / -0 is! - var valueNegative = value < 0 || 1 / value < 0; + velocityDecay: function(_) { + return arguments.length ? (velocityDecay = 1 - _, simulation) : 1 - velocityDecay; + }, - // Perform the initial formatting. - value = isNaN(value) ? nan : formatType(Math.abs(value), precision); + randomSource: function(_) { + return arguments.length ? (random = _, forces.forEach(initializeForce), simulation) : random; + }, - // Trim insignificant zeros. - if (trim) value = formatTrim(value); + force: function(name, _) { + return arguments.length > 1 ? ((_ == null ? forces.delete(name) : forces.set(name, initializeForce(_))), simulation) : forces.get(name); + }, - // If a negative value rounds to zero after formatting, and no explicit positive sign is requested, hide the sign. - if (valueNegative && +value === 0 && sign !== "+") valueNegative = false; + find: function(x, y, radius) { + var i = 0, + n = nodes.length, + dx, + dy, + d2, + node, + closest; - // Compute the prefix and suffix. - valuePrefix = (valueNegative ? (sign === "(" ? sign : minus) : sign === "-" || sign === "(" ? "" : sign) + valuePrefix; - valueSuffix = (type === "s" ? prefixes[8 + prefixExponent / 3] : "") + valueSuffix + (valueNegative && sign === "(" ? ")" : ""); + if (radius == null) radius = Infinity; + else radius *= radius; - // Break the formatted value into the integer “value” part that can be - // grouped, and fractional or exponential “suffix” part that is not. - if (maybeSuffix) { - i = -1, n = value.length; - while (++i < n) { - if (c = value.charCodeAt(i), 48 > c || c > 57) { - valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix; - value = value.slice(0, i); - break; - } - } - } + for (i = 0; i < n; ++i) { + node = nodes[i]; + dx = x - node.x; + dy = y - node.y; + d2 = dx * dx + dy * dy; + if (d2 < radius) closest = node, radius = d2; } - // If the fill character is not "0", grouping is applied before padding. - if (comma && !zero) value = group(value, Infinity); - - // Compute the padding. - var length = valuePrefix.length + value.length + valueSuffix.length, - padding = length < width ? new Array(width - length + 1).join(fill) : ""; + return closest; + }, - // If the fill character is "0", grouping is applied after padding. - if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = ""; + on: function(name, _) { + return arguments.length > 1 ? (event.on(name, _), simulation) : event.on(name); + } + }; +} - // Reconstruct the final output based on the desired alignment. - switch (align) { - case "<": value = valuePrefix + value + valueSuffix + padding; break; - case "=": value = valuePrefix + padding + value + valueSuffix; break; - case "^": value = padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length); break; - default: value = padding + valuePrefix + value + valueSuffix; break; - } - - return numerals(value); - } - - format.toString = function() { - return specifier + ""; - }; +function manyBody() { + var nodes, + node, + random, + alpha, + strength = constant$4(-30), + strengths, + distanceMin2 = 1, + distanceMax2 = Infinity, + theta2 = 0.81; - return format; + function force(_) { + var i, n = nodes.length, tree = quadtree(nodes, x$2, y$2).visitAfter(accumulate); + for (alpha = _, i = 0; i < n; ++i) node = nodes[i], tree.visit(apply); } - function formatPrefix(specifier, value) { - var f = newFormat((specifier = formatSpecifier(specifier), specifier.type = "f", specifier)), - e = Math.max(-8, Math.min(8, Math.floor(exponent$1(value) / 3))) * 3, - k = Math.pow(10, -e), - prefix = prefixes[8 + e / 3]; - return function(value) { - return f(k * value) + prefix; - }; + function initialize() { + if (!nodes) return; + var i, n = nodes.length, node; + strengths = new Array(n); + for (i = 0; i < n; ++i) node = nodes[i], strengths[node.index] = +strength(node, i, nodes); } - return { - format: newFormat, - formatPrefix: formatPrefix - }; -} - -var locale; + function accumulate(quad) { + var strength = 0, q, c, weight = 0, x, y, i; -defaultLocale({ - decimal: ".", - thousands: ",", - grouping: [3], - currency: ["$", ""], - minus: "-" -}); + // For internal nodes, accumulate forces from child quadrants. + if (quad.length) { + for (x = y = i = 0; i < 4; ++i) { + if ((q = quad[i]) && (c = Math.abs(q.value))) { + strength += q.value, weight += c, x += c * q.x, y += c * q.y; + } + } + quad.x = x / weight; + quad.y = y / weight; + } -function defaultLocale(definition) { - locale = formatLocale(definition); - exports.format = locale.format; - exports.formatPrefix = locale.formatPrefix; - return locale; -} + // For leaf nodes, accumulate forces from coincident quadrants. + else { + q = quad; + q.x = q.data.x; + q.y = q.data.y; + do strength += strengths[q.data.index]; + while (q = q.next); + } -function precisionFixed(step) { - return Math.max(0, -exponent$1(Math.abs(step))); -} + quad.value = strength; + } -function precisionPrefix(step, value) { - return Math.max(0, Math.max(-8, Math.min(8, Math.floor(exponent$1(value) / 3))) * 3 - exponent$1(Math.abs(step))); -} + function apply(quad, x1, _, x2) { + if (!quad.value) return true; -function precisionRound(step, max) { - step = Math.abs(step), max = Math.abs(max) - step; - return Math.max(0, exponent$1(max) - exponent$1(step)) + 1; -} + var x = quad.x - node.x, + y = quad.y - node.y, + w = x2 - x1, + l = x * x + y * y; -// Adds floating point numbers with twice the normal precision. -// Reference: J. R. Shewchuk, Adaptive Precision Floating-Point Arithmetic and -// Fast Robust Geometric Predicates, Discrete & Computational Geometry 18(3) -// 305–363 (1997). -// Code adapted from GeographicLib by Charles F. F. Karney, -// http://geographiclib.sourceforge.net/ + // Apply the Barnes-Hut approximation if possible. + // Limit forces for very close nodes; randomize direction if coincident. + if (w * w / theta2 < l) { + if (l < distanceMax2) { + if (x === 0) x = jiggle(random), l += x * x; + if (y === 0) y = jiggle(random), l += y * y; + if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l); + node.vx += x * quad.value * alpha / l; + node.vy += y * quad.value * alpha / l; + } + return true; + } -function adder() { - return new Adder; -} + // Otherwise, process points directly. + else if (quad.length || l >= distanceMax2) return; -function Adder() { - this.reset(); -} + // Limit forces for very close nodes; randomize direction if coincident. + if (quad.data !== node || quad.next) { + if (x === 0) x = jiggle(random), l += x * x; + if (y === 0) y = jiggle(random), l += y * y; + if (l < distanceMin2) l = Math.sqrt(distanceMin2 * l); + } -Adder.prototype = { - constructor: Adder, - reset: function() { - this.s = // rounded value - this.t = 0; // exact error - }, - add: function(y) { - add$1(temp, y, this.t); - add$1(this, temp.s, this.s); - if (this.s) this.t += temp.t; - else this.s = temp.t; - }, - valueOf: function() { - return this.s; + do if (quad.data !== node) { + w = strengths[quad.data.index] * alpha / l; + node.vx += x * w; + node.vy += y * w; + } while (quad = quad.next); } -}; -var temp = new Adder; - -function add$1(adder, a, b) { - var x = adder.s = a + b, - bv = x - a, - av = x - bv; - adder.t = (a - av) + (b - bv); -} + force.initialize = function(_nodes, _random) { + nodes = _nodes; + random = _random; + initialize(); + }; -var epsilon$2 = 1e-6; -var epsilon2$1 = 1e-12; -var pi$3 = Math.PI; -var halfPi$2 = pi$3 / 2; -var quarterPi = pi$3 / 4; -var tau$3 = pi$3 * 2; + force.strength = function(_) { + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : strength; + }; -var degrees$1 = 180 / pi$3; -var radians = pi$3 / 180; + force.distanceMin = function(_) { + return arguments.length ? (distanceMin2 = _ * _, force) : Math.sqrt(distanceMin2); + }; -var abs = Math.abs; -var atan = Math.atan; -var atan2 = Math.atan2; -var cos$1 = Math.cos; -var ceil = Math.ceil; -var exp = Math.exp; -var log = Math.log; -var pow = Math.pow; -var sin$1 = Math.sin; -var sign = Math.sign || function(x) { return x > 0 ? 1 : x < 0 ? -1 : 0; }; -var sqrt = Math.sqrt; -var tan = Math.tan; + force.distanceMax = function(_) { + return arguments.length ? (distanceMax2 = _ * _, force) : Math.sqrt(distanceMax2); + }; -function acos(x) { - return x > 1 ? 0 : x < -1 ? pi$3 : Math.acos(x); -} + force.theta = function(_) { + return arguments.length ? (theta2 = _ * _, force) : Math.sqrt(theta2); + }; -function asin(x) { - return x > 1 ? halfPi$2 : x < -1 ? -halfPi$2 : Math.asin(x); + return force; } -function haversin(x) { - return (x = sin$1(x / 2)) * x; -} +function radial$1(radius, x, y) { + var nodes, + strength = constant$4(0.1), + strengths, + radiuses; -function noop$2() {} + if (typeof radius !== "function") radius = constant$4(+radius); + if (x == null) x = 0; + if (y == null) y = 0; -function streamGeometry(geometry, stream) { - if (geometry && streamGeometryType.hasOwnProperty(geometry.type)) { - streamGeometryType[geometry.type](geometry, stream); + function force(alpha) { + for (var i = 0, n = nodes.length; i < n; ++i) { + var node = nodes[i], + dx = node.x - x || 1e-6, + dy = node.y - y || 1e-6, + r = Math.sqrt(dx * dx + dy * dy), + k = (radiuses[i] - r) * strengths[i] * alpha / r; + node.vx += dx * k; + node.vy += dy * k; + } } -} -var streamObjectType = { - Feature: function(object, stream) { - streamGeometry(object.geometry, stream); - }, - FeatureCollection: function(object, stream) { - var features = object.features, i = -1, n = features.length; - while (++i < n) streamGeometry(features[i].geometry, stream); + function initialize() { + if (!nodes) return; + var i, n = nodes.length; + strengths = new Array(n); + radiuses = new Array(n); + for (i = 0; i < n; ++i) { + radiuses[i] = +radius(nodes[i], i, nodes); + strengths[i] = isNaN(radiuses[i]) ? 0 : +strength(nodes[i], i, nodes); + } } -}; -var streamGeometryType = { - Sphere: function(object, stream) { - stream.sphere(); - }, - Point: function(object, stream) { - object = object.coordinates; - stream.point(object[0], object[1], object[2]); - }, - MultiPoint: function(object, stream) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) object = coordinates[i], stream.point(object[0], object[1], object[2]); - }, - LineString: function(object, stream) { - streamLine(object.coordinates, stream, 0); - }, - MultiLineString: function(object, stream) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) streamLine(coordinates[i], stream, 0); - }, - Polygon: function(object, stream) { - streamPolygon(object.coordinates, stream); - }, - MultiPolygon: function(object, stream) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) streamPolygon(coordinates[i], stream); - }, - GeometryCollection: function(object, stream) { - var geometries = object.geometries, i = -1, n = geometries.length; - while (++i < n) streamGeometry(geometries[i], stream); - } -}; + force.initialize = function(_) { + nodes = _, initialize(); + }; -function streamLine(coordinates, stream, closed) { - var i = -1, n = coordinates.length - closed, coordinate; - stream.lineStart(); - while (++i < n) coordinate = coordinates[i], stream.point(coordinate[0], coordinate[1], coordinate[2]); - stream.lineEnd(); -} + force.strength = function(_) { + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : strength; + }; -function streamPolygon(coordinates, stream) { - var i = -1, n = coordinates.length; - stream.polygonStart(); - while (++i < n) streamLine(coordinates[i], stream, 1); - stream.polygonEnd(); -} + force.radius = function(_) { + return arguments.length ? (radius = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : radius; + }; -function geoStream(object, stream) { - if (object && streamObjectType.hasOwnProperty(object.type)) { - streamObjectType[object.type](object, stream); - } else { - streamGeometry(object, stream); - } + force.x = function(_) { + return arguments.length ? (x = +_, force) : x; + }; + + force.y = function(_) { + return arguments.length ? (y = +_, force) : y; + }; + + return force; } -var areaRingSum = adder(); +function x$1(x) { + var strength = constant$4(0.1), + nodes, + strengths, + xz; -var areaSum = adder(), - lambda00, - phi00, - lambda0, - cosPhi0, - sinPhi0; + if (typeof x !== "function") x = constant$4(x == null ? 0 : +x); -var areaStream = { - point: noop$2, - lineStart: noop$2, - lineEnd: noop$2, - polygonStart: function() { - areaRingSum.reset(); - areaStream.lineStart = areaRingStart; - areaStream.lineEnd = areaRingEnd; - }, - polygonEnd: function() { - var areaRing = +areaRingSum; - areaSum.add(areaRing < 0 ? tau$3 + areaRing : areaRing); - this.lineStart = this.lineEnd = this.point = noop$2; - }, - sphere: function() { - areaSum.add(tau$3); + function force(alpha) { + for (var i = 0, n = nodes.length, node; i < n; ++i) { + node = nodes[i], node.vx += (xz[i] - node.x) * strengths[i] * alpha; + } } -}; - -function areaRingStart() { - areaStream.point = areaPointFirst; -} -function areaRingEnd() { - areaPoint(lambda00, phi00); -} + function initialize() { + if (!nodes) return; + var i, n = nodes.length; + strengths = new Array(n); + xz = new Array(n); + for (i = 0; i < n; ++i) { + strengths[i] = isNaN(xz[i] = +x(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes); + } + } -function areaPointFirst(lambda, phi) { - areaStream.point = areaPoint; - lambda00 = lambda, phi00 = phi; - lambda *= radians, phi *= radians; - lambda0 = lambda, cosPhi0 = cos$1(phi = phi / 2 + quarterPi), sinPhi0 = sin$1(phi); -} + force.initialize = function(_) { + nodes = _; + initialize(); + }; -function areaPoint(lambda, phi) { - lambda *= radians, phi *= radians; - phi = phi / 2 + quarterPi; // half the angular distance from south pole + force.strength = function(_) { + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : strength; + }; - // Spherical excess E for a spherical triangle with vertices: south pole, - // previous point, current point. Uses a formula derived from Cagnoli’s - // theorem. See Todhunter, Spherical Trig. (1871), Sec. 103, Eq. (2). - var dLambda = lambda - lambda0, - sdLambda = dLambda >= 0 ? 1 : -1, - adLambda = sdLambda * dLambda, - cosPhi = cos$1(phi), - sinPhi = sin$1(phi), - k = sinPhi0 * sinPhi, - u = cosPhi0 * cosPhi + k * cos$1(adLambda), - v = k * sdLambda * sin$1(adLambda); - areaRingSum.add(atan2(v, u)); + force.x = function(_) { + return arguments.length ? (x = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : x; + }; - // Advance the previous points. - lambda0 = lambda, cosPhi0 = cosPhi, sinPhi0 = sinPhi; + return force; } -function area$1(object) { - areaSum.reset(); - geoStream(object, areaStream); - return areaSum * 2; -} +function y$1(y) { + var strength = constant$4(0.1), + nodes, + strengths, + yz; -function spherical(cartesian) { - return [atan2(cartesian[1], cartesian[0]), asin(cartesian[2])]; -} + if (typeof y !== "function") y = constant$4(y == null ? 0 : +y); -function cartesian(spherical) { - var lambda = spherical[0], phi = spherical[1], cosPhi = cos$1(phi); - return [cosPhi * cos$1(lambda), cosPhi * sin$1(lambda), sin$1(phi)]; -} + function force(alpha) { + for (var i = 0, n = nodes.length, node; i < n; ++i) { + node = nodes[i], node.vy += (yz[i] - node.y) * strengths[i] * alpha; + } + } -function cartesianDot(a, b) { - return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]; -} + function initialize() { + if (!nodes) return; + var i, n = nodes.length; + strengths = new Array(n); + yz = new Array(n); + for (i = 0; i < n; ++i) { + strengths[i] = isNaN(yz[i] = +y(nodes[i], i, nodes)) ? 0 : +strength(nodes[i], i, nodes); + } + } -function cartesianCross(a, b) { - return [a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0]]; -} + force.initialize = function(_) { + nodes = _; + initialize(); + }; -// TODO return a -function cartesianAddInPlace(a, b) { - a[0] += b[0], a[1] += b[1], a[2] += b[2]; -} + force.strength = function(_) { + return arguments.length ? (strength = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : strength; + }; -function cartesianScale(vector, k) { - return [vector[0] * k, vector[1] * k, vector[2] * k]; -} + force.y = function(_) { + return arguments.length ? (y = typeof _ === "function" ? _ : constant$4(+_), initialize(), force) : y; + }; -// TODO return d -function cartesianNormalizeInPlace(d) { - var l = sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]); - d[0] /= l, d[1] /= l, d[2] /= l; + return force; } -var lambda0$1, phi0, lambda1, phi1, // bounds - lambda2, // previous lambda-coordinate - lambda00$1, phi00$1, // first point - p0, // previous 3D point - deltaSum = adder(), - ranges, - range; - -var boundsStream = { - point: boundsPoint, - lineStart: boundsLineStart, - lineEnd: boundsLineEnd, - polygonStart: function() { - boundsStream.point = boundsRingPoint; - boundsStream.lineStart = boundsRingStart; - boundsStream.lineEnd = boundsRingEnd; - deltaSum.reset(); - areaStream.polygonStart(); - }, - polygonEnd: function() { - areaStream.polygonEnd(); - boundsStream.point = boundsPoint; - boundsStream.lineStart = boundsLineStart; - boundsStream.lineEnd = boundsLineEnd; - if (areaRingSum < 0) lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90); - else if (deltaSum > epsilon$2) phi1 = 90; - else if (deltaSum < -epsilon$2) phi0 = -90; - range[0] = lambda0$1, range[1] = lambda1; - }, - sphere: function() { - lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90); - } -}; - -function boundsPoint(lambda, phi) { - ranges.push(range = [lambda0$1 = lambda, lambda1 = lambda]); - if (phi < phi0) phi0 = phi; - if (phi > phi1) phi1 = phi; +function formatDecimal(x) { + return Math.abs(x = Math.round(x)) >= 1e21 + ? x.toLocaleString("en").replace(/,/g, "") + : x.toString(10); } -function linePoint(lambda, phi) { - var p = cartesian([lambda * radians, phi * radians]); - if (p0) { - var normal = cartesianCross(p0, p), - equatorial = [normal[1], -normal[0], 0], - inflection = cartesianCross(equatorial, normal); - cartesianNormalizeInPlace(inflection); - inflection = spherical(inflection); - var delta = lambda - lambda2, - sign = delta > 0 ? 1 : -1, - lambdai = inflection[0] * degrees$1 * sign, - phii, - antimeridian = abs(delta) > 180; - if (antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) { - phii = inflection[1] * degrees$1; - if (phii > phi1) phi1 = phii; - } else if (lambdai = (lambdai + 360) % 360 - 180, antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) { - phii = -inflection[1] * degrees$1; - if (phii < phi0) phi0 = phii; - } else { - if (phi < phi0) phi0 = phi; - if (phi > phi1) phi1 = phi; - } - if (antimeridian) { - if (lambda < lambda2) { - if (angle(lambda0$1, lambda) > angle(lambda0$1, lambda1)) lambda1 = lambda; - } else { - if (angle(lambda, lambda1) > angle(lambda0$1, lambda1)) lambda0$1 = lambda; - } - } else { - if (lambda1 >= lambda0$1) { - if (lambda < lambda0$1) lambda0$1 = lambda; - if (lambda > lambda1) lambda1 = lambda; - } else { - if (lambda > lambda2) { - if (angle(lambda0$1, lambda) > angle(lambda0$1, lambda1)) lambda1 = lambda; - } else { - if (angle(lambda, lambda1) > angle(lambda0$1, lambda1)) lambda0$1 = lambda; - } - } - } - } else { - ranges.push(range = [lambda0$1 = lambda, lambda1 = lambda]); - } - if (phi < phi0) phi0 = phi; - if (phi > phi1) phi1 = phi; - p0 = p, lambda2 = lambda; -} +// Computes the decimal coefficient and exponent of the specified number x with +// significant digits p, where x is positive and p is in [1, 21] or undefined. +// For example, formatDecimalParts(1.23) returns ["123", 0]. +function formatDecimalParts(x, p) { + if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf("e")) < 0) return null; // NaN, ±Infinity + var i, coefficient = x.slice(0, i); -function boundsLineStart() { - boundsStream.point = linePoint; + // The string returned by toExponential either has the form \d\.\d+e[-+]\d+ + // (e.g., 1.2e+3) or the form \de[-+]\d+ (e.g., 1e+3). + return [ + coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient, + +x.slice(i + 1) + ]; } -function boundsLineEnd() { - range[0] = lambda0$1, range[1] = lambda1; - boundsStream.point = boundsPoint; - p0 = null; +function exponent(x) { + return x = formatDecimalParts(Math.abs(x)), x ? x[1] : NaN; } -function boundsRingPoint(lambda, phi) { - if (p0) { - var delta = lambda - lambda2; - deltaSum.add(abs(delta) > 180 ? delta + (delta > 0 ? 360 : -360) : delta); - } else { - lambda00$1 = lambda, phi00$1 = phi; - } - areaStream.point(lambda, phi); - linePoint(lambda, phi); -} +function formatGroup(grouping, thousands) { + return function(value, width) { + var i = value.length, + t = [], + j = 0, + g = grouping[0], + length = 0; -function boundsRingStart() { - areaStream.lineStart(); -} + while (i > 0 && g > 0) { + if (length + g + 1 > width) g = Math.max(1, width - length); + t.push(value.substring(i -= g, i + g)); + if ((length += g + 1) > width) break; + g = grouping[j = (j + 1) % grouping.length]; + } -function boundsRingEnd() { - boundsRingPoint(lambda00$1, phi00$1); - areaStream.lineEnd(); - if (abs(deltaSum) > epsilon$2) lambda0$1 = -(lambda1 = 180); - range[0] = lambda0$1, range[1] = lambda1; - p0 = null; + return t.reverse().join(thousands); + }; } -// Finds the left-right distance between two longitudes. -// This is almost the same as (lambda1 - lambda0 + 360°) % 360°, except that we want -// the distance between ±180° to be 360°. -function angle(lambda0, lambda1) { - return (lambda1 -= lambda0) < 0 ? lambda1 + 360 : lambda1; +function formatNumerals(numerals) { + return function(value) { + return value.replace(/[0-9]/g, function(i) { + return numerals[+i]; + }); + }; } -function rangeCompare(a, b) { - return a[0] - b[0]; -} +// [[fill]align][sign][symbol][0][width][,][.precision][~][type] +var re = /^(?:(.)?([<>=^]))?([+\-( ])?([$#])?(0)?(\d+)?(,)?(\.\d+)?(~)?([a-z%])?$/i; -function rangeContains(range, x) { - return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x; +function formatSpecifier(specifier) { + if (!(match = re.exec(specifier))) throw new Error("invalid format: " + specifier); + var match; + return new FormatSpecifier({ + fill: match[1], + align: match[2], + sign: match[3], + symbol: match[4], + zero: match[5], + width: match[6], + comma: match[7], + precision: match[8] && match[8].slice(1), + trim: match[9], + type: match[10] + }); } -function bounds(feature) { - var i, n, a, b, merged, deltaMax, delta; +formatSpecifier.prototype = FormatSpecifier.prototype; // instanceof - phi1 = lambda1 = -(lambda0$1 = phi0 = Infinity); - ranges = []; - geoStream(feature, boundsStream); +function FormatSpecifier(specifier) { + this.fill = specifier.fill === undefined ? " " : specifier.fill + ""; + this.align = specifier.align === undefined ? ">" : specifier.align + ""; + this.sign = specifier.sign === undefined ? "-" : specifier.sign + ""; + this.symbol = specifier.symbol === undefined ? "" : specifier.symbol + ""; + this.zero = !!specifier.zero; + this.width = specifier.width === undefined ? undefined : +specifier.width; + this.comma = !!specifier.comma; + this.precision = specifier.precision === undefined ? undefined : +specifier.precision; + this.trim = !!specifier.trim; + this.type = specifier.type === undefined ? "" : specifier.type + ""; +} - // First, sort ranges by their minimum longitudes. - if (n = ranges.length) { - ranges.sort(rangeCompare); - - // Then, merge any ranges that overlap. - for (i = 1, a = ranges[0], merged = [a]; i < n; ++i) { - b = ranges[i]; - if (rangeContains(a, b[0]) || rangeContains(a, b[1])) { - if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1]; - if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0]; - } else { - merged.push(a = b); - } - } +FormatSpecifier.prototype.toString = function() { + return this.fill + + this.align + + this.sign + + this.symbol + + (this.zero ? "0" : "") + + (this.width === undefined ? "" : Math.max(1, this.width | 0)) + + (this.comma ? "," : "") + + (this.precision === undefined ? "" : "." + Math.max(0, this.precision | 0)) + + (this.trim ? "~" : "") + + this.type; +}; - // Finally, find the largest gap between the merged ranges. - // The final bounding box will be the inverse of this gap. - for (deltaMax = -Infinity, n = merged.length - 1, i = 0, a = merged[n]; i <= n; a = b, ++i) { - b = merged[i]; - if ((delta = angle(a[1], b[0])) > deltaMax) deltaMax = delta, lambda0$1 = b[0], lambda1 = a[1]; +// Trims insignificant zeros, e.g., replaces 1.2000k with 1.2k. +function formatTrim(s) { + out: for (var n = s.length, i = 1, i0 = -1, i1; i < n; ++i) { + switch (s[i]) { + case ".": i0 = i1 = i; break; + case "0": if (i0 === 0) i0 = i; i1 = i; break; + default: if (!+s[i]) break out; if (i0 > 0) i0 = 0; break; } } + return i0 > 0 ? s.slice(0, i0) + s.slice(i1 + 1) : s; +} - ranges = range = null; +var prefixExponent; - return lambda0$1 === Infinity || phi0 === Infinity - ? [[NaN, NaN], [NaN, NaN]] - : [[lambda0$1, phi0], [lambda1, phi1]]; +function formatPrefixAuto(x, p) { + var d = formatDecimalParts(x, p); + if (!d) return x + ""; + var coefficient = d[0], + exponent = d[1], + i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1, + n = coefficient.length; + return i === n ? coefficient + : i > n ? coefficient + new Array(i - n + 1).join("0") + : i > 0 ? coefficient.slice(0, i) + "." + coefficient.slice(i) + : "0." + new Array(1 - i).join("0") + formatDecimalParts(x, Math.max(0, p + i - 1))[0]; // less than 1y! } -var W0, W1, - X0, Y0, Z0, - X1, Y1, Z1, - X2, Y2, Z2, - lambda00$2, phi00$2, // first point - x0, y0, z0; // previous point +function formatRounded(x, p) { + var d = formatDecimalParts(x, p); + if (!d) return x + ""; + var coefficient = d[0], + exponent = d[1]; + return exponent < 0 ? "0." + new Array(-exponent).join("0") + coefficient + : coefficient.length > exponent + 1 ? coefficient.slice(0, exponent + 1) + "." + coefficient.slice(exponent + 1) + : coefficient + new Array(exponent - coefficient.length + 2).join("0"); +} -var centroidStream = { - sphere: noop$2, - point: centroidPoint, - lineStart: centroidLineStart, - lineEnd: centroidLineEnd, - polygonStart: function() { - centroidStream.lineStart = centroidRingStart; - centroidStream.lineEnd = centroidRingEnd; - }, - polygonEnd: function() { - centroidStream.lineStart = centroidLineStart; - centroidStream.lineEnd = centroidLineEnd; - } +var formatTypes = { + "%": (x, p) => (x * 100).toFixed(p), + "b": (x) => Math.round(x).toString(2), + "c": (x) => x + "", + "d": formatDecimal, + "e": (x, p) => x.toExponential(p), + "f": (x, p) => x.toFixed(p), + "g": (x, p) => x.toPrecision(p), + "o": (x) => Math.round(x).toString(8), + "p": (x, p) => formatRounded(x * 100, p), + "r": formatRounded, + "s": formatPrefixAuto, + "X": (x) => Math.round(x).toString(16).toUpperCase(), + "x": (x) => Math.round(x).toString(16) }; -// Arithmetic mean of Cartesian vectors. -function centroidPoint(lambda, phi) { - lambda *= radians, phi *= radians; - var cosPhi = cos$1(phi); - centroidPointCartesian(cosPhi * cos$1(lambda), cosPhi * sin$1(lambda), sin$1(phi)); +function identity$6(x) { + return x; } -function centroidPointCartesian(x, y, z) { - ++W0; - X0 += (x - X0) / W0; - Y0 += (y - Y0) / W0; - Z0 += (z - Z0) / W0; -} +var map = Array.prototype.map, + prefixes = ["y","z","a","f","p","n","\xB5","m","","k","M","G","T","P","E","Z","Y"]; -function centroidLineStart() { - centroidStream.point = centroidLinePointFirst; -} +function formatLocale$1(locale) { + var group = locale.grouping === undefined || locale.thousands === undefined ? identity$6 : formatGroup(map.call(locale.grouping, Number), locale.thousands + ""), + currencyPrefix = locale.currency === undefined ? "" : locale.currency[0] + "", + currencySuffix = locale.currency === undefined ? "" : locale.currency[1] + "", + decimal = locale.decimal === undefined ? "." : locale.decimal + "", + numerals = locale.numerals === undefined ? identity$6 : formatNumerals(map.call(locale.numerals, String)), + percent = locale.percent === undefined ? "%" : locale.percent + "", + minus = locale.minus === undefined ? "\u2212" : locale.minus + "", + nan = locale.nan === undefined ? "NaN" : locale.nan + ""; -function centroidLinePointFirst(lambda, phi) { - lambda *= radians, phi *= radians; - var cosPhi = cos$1(phi); - x0 = cosPhi * cos$1(lambda); - y0 = cosPhi * sin$1(lambda); - z0 = sin$1(phi); - centroidStream.point = centroidLinePoint; - centroidPointCartesian(x0, y0, z0); -} + function newFormat(specifier) { + specifier = formatSpecifier(specifier); -function centroidLinePoint(lambda, phi) { - lambda *= radians, phi *= radians; - var cosPhi = cos$1(phi), - x = cosPhi * cos$1(lambda), - y = cosPhi * sin$1(lambda), - z = sin$1(phi), - w = atan2(sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z); - W1 += w; - X1 += w * (x0 + (x0 = x)); - Y1 += w * (y0 + (y0 = y)); - Z1 += w * (z0 + (z0 = z)); - centroidPointCartesian(x0, y0, z0); -} + var fill = specifier.fill, + align = specifier.align, + sign = specifier.sign, + symbol = specifier.symbol, + zero = specifier.zero, + width = specifier.width, + comma = specifier.comma, + precision = specifier.precision, + trim = specifier.trim, + type = specifier.type; -function centroidLineEnd() { - centroidStream.point = centroidPoint; -} + // The "n" type is an alias for ",g". + if (type === "n") comma = true, type = "g"; -// See J. E. Brock, The Inertia Tensor for a Spherical Triangle, -// J. Applied Mechanics 42, 239 (1975). -function centroidRingStart() { - centroidStream.point = centroidRingPointFirst; -} + // The "" type, and any invalid type, is an alias for ".12~g". + else if (!formatTypes[type]) precision === undefined && (precision = 12), trim = true, type = "g"; -function centroidRingEnd() { - centroidRingPoint(lambda00$2, phi00$2); - centroidStream.point = centroidPoint; -} + // If zero fill is specified, padding goes after sign and before digits. + if (zero || (fill === "0" && align === "=")) zero = true, fill = "0", align = "="; -function centroidRingPointFirst(lambda, phi) { - lambda00$2 = lambda, phi00$2 = phi; - lambda *= radians, phi *= radians; - centroidStream.point = centroidRingPoint; - var cosPhi = cos$1(phi); - x0 = cosPhi * cos$1(lambda); - y0 = cosPhi * sin$1(lambda); - z0 = sin$1(phi); - centroidPointCartesian(x0, y0, z0); -} + // Compute the prefix and suffix. + // For SI-prefix, the suffix is lazily computed. + var prefix = symbol === "$" ? currencyPrefix : symbol === "#" && /[boxX]/.test(type) ? "0" + type.toLowerCase() : "", + suffix = symbol === "$" ? currencySuffix : /[%p]/.test(type) ? percent : ""; -function centroidRingPoint(lambda, phi) { - lambda *= radians, phi *= radians; - var cosPhi = cos$1(phi), - x = cosPhi * cos$1(lambda), - y = cosPhi * sin$1(lambda), - z = sin$1(phi), - cx = y0 * z - z0 * y, - cy = z0 * x - x0 * z, - cz = x0 * y - y0 * x, - m = sqrt(cx * cx + cy * cy + cz * cz), - w = asin(m), // line weight = angle - v = m && -w / m; // area weight multiplier - X2 += v * cx; - Y2 += v * cy; - Z2 += v * cz; - W1 += w; - X1 += w * (x0 + (x0 = x)); - Y1 += w * (y0 + (y0 = y)); - Z1 += w * (z0 + (z0 = z)); - centroidPointCartesian(x0, y0, z0); -} + // What format function should we use? + // Is this an integer type? + // Can this type generate exponential notation? + var formatType = formatTypes[type], + maybeSuffix = /[defgprs%]/.test(type); -function centroid(object) { - W0 = W1 = - X0 = Y0 = Z0 = - X1 = Y1 = Z1 = - X2 = Y2 = Z2 = 0; - geoStream(object, centroidStream); + // Set the default precision if not specified, + // or clamp the specified precision to the supported range. + // For significant precision, it must be in [1, 21]. + // For fixed precision, it must be in [0, 20]. + precision = precision === undefined ? 6 + : /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision)) + : Math.max(0, Math.min(20, precision)); - var x = X2, - y = Y2, - z = Z2, - m = x * x + y * y + z * z; + function format(value) { + var valuePrefix = prefix, + valueSuffix = suffix, + i, n, c; - // If the area-weighted ccentroid is undefined, fall back to length-weighted ccentroid. - if (m < epsilon2$1) { - x = X1, y = Y1, z = Z1; - // If the feature has zero length, fall back to arithmetic mean of point vectors. - if (W1 < epsilon$2) x = X0, y = Y0, z = Z0; - m = x * x + y * y + z * z; - // If the feature still has an undefined ccentroid, then return. - if (m < epsilon2$1) return [NaN, NaN]; - } + if (type === "c") { + valueSuffix = formatType(value) + valueSuffix; + value = ""; + } else { + value = +value; - return [atan2(y, x) * degrees$1, asin(z / sqrt(m)) * degrees$1]; -} + // Determine the sign. -0 is not less than 0, but 1 / -0 is! + var valueNegative = value < 0 || 1 / value < 0; -function constant$8(x) { - return function() { - return x; - }; -} + // Perform the initial formatting. + value = isNaN(value) ? nan : formatType(Math.abs(value), precision); -function compose(a, b) { + // Trim insignificant zeros. + if (trim) value = formatTrim(value); - function compose(x, y) { - return x = a(x, y), b(x[0], x[1]); - } + // If a negative value rounds to zero after formatting, and no explicit positive sign is requested, hide the sign. + if (valueNegative && +value === 0 && sign !== "+") valueNegative = false; - if (a.invert && b.invert) compose.invert = function(x, y) { - return x = b.invert(x, y), x && a.invert(x[0], x[1]); - }; + // Compute the prefix and suffix. + valuePrefix = (valueNegative ? (sign === "(" ? sign : minus) : sign === "-" || sign === "(" ? "" : sign) + valuePrefix; + valueSuffix = (type === "s" ? prefixes[8 + prefixExponent / 3] : "") + valueSuffix + (valueNegative && sign === "(" ? ")" : ""); - return compose; -} + // Break the formatted value into the integer “value” part that can be + // grouped, and fractional or exponential “suffix” part that is not. + if (maybeSuffix) { + i = -1, n = value.length; + while (++i < n) { + if (c = value.charCodeAt(i), 48 > c || c > 57) { + valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix; + value = value.slice(0, i); + break; + } + } + } + } -function rotationIdentity(lambda, phi) { - return [abs(lambda) > pi$3 ? lambda + Math.round(-lambda / tau$3) * tau$3 : lambda, phi]; -} + // If the fill character is not "0", grouping is applied before padding. + if (comma && !zero) value = group(value, Infinity); -rotationIdentity.invert = rotationIdentity; + // Compute the padding. + var length = valuePrefix.length + value.length + valueSuffix.length, + padding = length < width ? new Array(width - length + 1).join(fill) : ""; -function rotateRadians(deltaLambda, deltaPhi, deltaGamma) { - return (deltaLambda %= tau$3) ? (deltaPhi || deltaGamma ? compose(rotationLambda(deltaLambda), rotationPhiGamma(deltaPhi, deltaGamma)) - : rotationLambda(deltaLambda)) - : (deltaPhi || deltaGamma ? rotationPhiGamma(deltaPhi, deltaGamma) - : rotationIdentity); -} + // If the fill character is "0", grouping is applied after padding. + if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = ""; -function forwardRotationLambda(deltaLambda) { - return function(lambda, phi) { - return lambda += deltaLambda, [lambda > pi$3 ? lambda - tau$3 : lambda < -pi$3 ? lambda + tau$3 : lambda, phi]; - }; -} + // Reconstruct the final output based on the desired alignment. + switch (align) { + case "<": value = valuePrefix + value + valueSuffix + padding; break; + case "=": value = valuePrefix + padding + value + valueSuffix; break; + case "^": value = padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length); break; + default: value = padding + valuePrefix + value + valueSuffix; break; + } -function rotationLambda(deltaLambda) { - var rotation = forwardRotationLambda(deltaLambda); - rotation.invert = forwardRotationLambda(-deltaLambda); - return rotation; -} + return numerals(value); + } -function rotationPhiGamma(deltaPhi, deltaGamma) { - var cosDeltaPhi = cos$1(deltaPhi), - sinDeltaPhi = sin$1(deltaPhi), - cosDeltaGamma = cos$1(deltaGamma), - sinDeltaGamma = sin$1(deltaGamma); + format.toString = function() { + return specifier + ""; + }; - function rotation(lambda, phi) { - var cosPhi = cos$1(phi), - x = cos$1(lambda) * cosPhi, - y = sin$1(lambda) * cosPhi, - z = sin$1(phi), - k = z * cosDeltaPhi + x * sinDeltaPhi; - return [ - atan2(y * cosDeltaGamma - k * sinDeltaGamma, x * cosDeltaPhi - z * sinDeltaPhi), - asin(k * cosDeltaGamma + y * sinDeltaGamma) - ]; + return format; } - rotation.invert = function(lambda, phi) { - var cosPhi = cos$1(phi), - x = cos$1(lambda) * cosPhi, - y = sin$1(lambda) * cosPhi, - z = sin$1(phi), - k = z * cosDeltaGamma - y * sinDeltaGamma; - return [ - atan2(y * cosDeltaGamma + z * sinDeltaGamma, x * cosDeltaPhi + k * sinDeltaPhi), - asin(k * cosDeltaPhi - x * sinDeltaPhi) - ]; - }; + function formatPrefix(specifier, value) { + var f = newFormat((specifier = formatSpecifier(specifier), specifier.type = "f", specifier)), + e = Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3, + k = Math.pow(10, -e), + prefix = prefixes[8 + e / 3]; + return function(value) { + return f(k * value) + prefix; + }; + } - return rotation; + return { + format: newFormat, + formatPrefix: formatPrefix + }; } -function rotation(rotate) { - rotate = rotateRadians(rotate[0] * radians, rotate[1] * radians, rotate.length > 2 ? rotate[2] * radians : 0); - - function forward(coordinates) { - coordinates = rotate(coordinates[0] * radians, coordinates[1] * radians); - return coordinates[0] *= degrees$1, coordinates[1] *= degrees$1, coordinates; - } +var locale$1; +exports.format = void 0; +exports.formatPrefix = void 0; - forward.invert = function(coordinates) { - coordinates = rotate.invert(coordinates[0] * radians, coordinates[1] * radians); - return coordinates[0] *= degrees$1, coordinates[1] *= degrees$1, coordinates; - }; +defaultLocale$1({ + thousands: ",", + grouping: [3], + currency: ["$", ""] +}); - return forward; +function defaultLocale$1(definition) { + locale$1 = formatLocale$1(definition); + exports.format = locale$1.format; + exports.formatPrefix = locale$1.formatPrefix; + return locale$1; } -// Generates a circle centered at [0°, 0°], with a given radius and precision. -function circleStream(stream, radius, delta, direction, t0, t1) { - if (!delta) return; - var cosRadius = cos$1(radius), - sinRadius = sin$1(radius), - step = direction * delta; - if (t0 == null) { - t0 = radius + direction * tau$3; - t1 = radius - step / 2; - } else { - t0 = circleRadius(cosRadius, t0); - t1 = circleRadius(cosRadius, t1); - if (direction > 0 ? t0 < t1 : t0 > t1) t0 += direction * tau$3; - } - for (var point, t = t0; direction > 0 ? t > t1 : t < t1; t -= step) { - point = spherical([cosRadius, -sinRadius * cos$1(t), -sinRadius * sin$1(t)]); - stream.point(point[0], point[1]); - } +function precisionFixed(step) { + return Math.max(0, -exponent(Math.abs(step))); } -// Returns the signed angle of a cartesian point relative to [cosRadius, 0, 0]. -function circleRadius(cosRadius, point) { - point = cartesian(point), point[0] -= cosRadius; - cartesianNormalizeInPlace(point); - var radius = acos(-point[1]); - return ((-point[2] < 0 ? -radius : radius) + tau$3 - epsilon$2) % tau$3; +function precisionPrefix(step, value) { + return Math.max(0, Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3 - exponent(Math.abs(step))); } -function circle() { - var center = constant$8([0, 0]), - radius = constant$8(90), - precision = constant$8(6), - ring, - rotate, - stream = {point: point}; - - function point(x, y) { - ring.push(x = rotate(x, y)); - x[0] *= degrees$1, x[1] *= degrees$1; - } - - function circle() { - var c = center.apply(this, arguments), - r = radius.apply(this, arguments) * radians, - p = precision.apply(this, arguments) * radians; - ring = []; - rotate = rotateRadians(-c[0] * radians, -c[1] * radians, 0).invert; - circleStream(stream, r, p, 1); - c = {type: "Polygon", coordinates: [ring]}; - ring = rotate = null; - return c; - } +function precisionRound(step, max) { + step = Math.abs(step), max = Math.abs(max) - step; + return Math.max(0, exponent(max) - exponent(step)) + 1; +} - circle.center = function(_) { - return arguments.length ? (center = typeof _ === "function" ? _ : constant$8([+_[0], +_[1]]), circle) : center; - }; +var epsilon$1 = 1e-6; +var epsilon2 = 1e-12; +var pi$1 = Math.PI; +var halfPi$1 = pi$1 / 2; +var quarterPi = pi$1 / 4; +var tau$1 = pi$1 * 2; - circle.radius = function(_) { - return arguments.length ? (radius = typeof _ === "function" ? _ : constant$8(+_), circle) : radius; - }; +var degrees = 180 / pi$1; +var radians = pi$1 / 180; - circle.precision = function(_) { - return arguments.length ? (precision = typeof _ === "function" ? _ : constant$8(+_), circle) : precision; - }; +var abs$1 = Math.abs; +var atan = Math.atan; +var atan2$1 = Math.atan2; +var cos$1 = Math.cos; +var ceil = Math.ceil; +var exp = Math.exp; +var hypot = Math.hypot; +var log$1 = Math.log; +var pow$1 = Math.pow; +var sin$1 = Math.sin; +var sign$1 = Math.sign || function(x) { return x > 0 ? 1 : x < 0 ? -1 : 0; }; +var sqrt$2 = Math.sqrt; +var tan = Math.tan; - return circle; +function acos$1(x) { + return x > 1 ? 0 : x < -1 ? pi$1 : Math.acos(x); } -function clipBuffer() { - var lines = [], - line; - return { - point: function(x, y) { - line.push([x, y]); - }, - lineStart: function() { - lines.push(line = []); - }, - lineEnd: noop$2, - rejoin: function() { - if (lines.length > 1) lines.push(lines.pop().concat(lines.shift())); - }, - result: function() { - var result = lines; - lines = []; - line = null; - return result; - } - }; +function asin$1(x) { + return x > 1 ? halfPi$1 : x < -1 ? -halfPi$1 : Math.asin(x); } -function pointEqual(a, b) { - return abs(a[0] - b[0]) < epsilon$2 && abs(a[1] - b[1]) < epsilon$2; +function haversin(x) { + return (x = sin$1(x / 2)) * x; } -function Intersection(point, points, other, entry) { - this.x = point; - this.z = points; - this.o = other; // another intersection - this.e = entry; // is an entry? - this.v = false; // visited - this.n = this.p = null; // next & previous +function noop$1() {} + +function streamGeometry(geometry, stream) { + if (geometry && streamGeometryType.hasOwnProperty(geometry.type)) { + streamGeometryType[geometry.type](geometry, stream); + } } -// A generalized polygon clipping algorithm: given a polygon that has been cut -// into its visible line segments, and rejoins the segments by interpolating -// along the clip edge. -function clipRejoin(segments, compareIntersection, startInside, interpolate, stream) { - var subject = [], - clip = [], - i, - n; +var streamObjectType = { + Feature: function(object, stream) { + streamGeometry(object.geometry, stream); + }, + FeatureCollection: function(object, stream) { + var features = object.features, i = -1, n = features.length; + while (++i < n) streamGeometry(features[i].geometry, stream); + } +}; - segments.forEach(function(segment) { - if ((n = segment.length - 1) <= 0) return; - var n, p0 = segment[0], p1 = segment[n], x; +var streamGeometryType = { + Sphere: function(object, stream) { + stream.sphere(); + }, + Point: function(object, stream) { + object = object.coordinates; + stream.point(object[0], object[1], object[2]); + }, + MultiPoint: function(object, stream) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) object = coordinates[i], stream.point(object[0], object[1], object[2]); + }, + LineString: function(object, stream) { + streamLine(object.coordinates, stream, 0); + }, + MultiLineString: function(object, stream) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) streamLine(coordinates[i], stream, 0); + }, + Polygon: function(object, stream) { + streamPolygon(object.coordinates, stream); + }, + MultiPolygon: function(object, stream) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) streamPolygon(coordinates[i], stream); + }, + GeometryCollection: function(object, stream) { + var geometries = object.geometries, i = -1, n = geometries.length; + while (++i < n) streamGeometry(geometries[i], stream); + } +}; - // If the first and last points of a segment are coincident, then treat as a - // closed ring. TODO if all rings are closed, then the winding order of the - // exterior ring should be checked. - if (pointEqual(p0, p1)) { - stream.lineStart(); - for (i = 0; i < n; ++i) stream.point((p0 = segment[i])[0], p0[1]); - stream.lineEnd(); - return; - } +function streamLine(coordinates, stream, closed) { + var i = -1, n = coordinates.length - closed, coordinate; + stream.lineStart(); + while (++i < n) coordinate = coordinates[i], stream.point(coordinate[0], coordinate[1], coordinate[2]); + stream.lineEnd(); +} - subject.push(x = new Intersection(p0, segment, null, true)); - clip.push(x.o = new Intersection(p0, null, x, false)); - subject.push(x = new Intersection(p1, segment, null, false)); - clip.push(x.o = new Intersection(p1, null, x, true)); - }); +function streamPolygon(coordinates, stream) { + var i = -1, n = coordinates.length; + stream.polygonStart(); + while (++i < n) streamLine(coordinates[i], stream, 1); + stream.polygonEnd(); +} - if (!subject.length) return; +function geoStream(object, stream) { + if (object && streamObjectType.hasOwnProperty(object.type)) { + streamObjectType[object.type](object, stream); + } else { + streamGeometry(object, stream); + } +} - clip.sort(compareIntersection); - link$1(subject); - link$1(clip); +var areaRingSum$1 = new Adder(); - for (i = 0, n = clip.length; i < n; ++i) { - clip[i].e = startInside = !startInside; +// hello? + +var areaSum$1 = new Adder(), + lambda00$2, + phi00$2, + lambda0$2, + cosPhi0$1, + sinPhi0$1; + +var areaStream$1 = { + point: noop$1, + lineStart: noop$1, + lineEnd: noop$1, + polygonStart: function() { + areaRingSum$1 = new Adder(); + areaStream$1.lineStart = areaRingStart$1; + areaStream$1.lineEnd = areaRingEnd$1; + }, + polygonEnd: function() { + var areaRing = +areaRingSum$1; + areaSum$1.add(areaRing < 0 ? tau$1 + areaRing : areaRing); + this.lineStart = this.lineEnd = this.point = noop$1; + }, + sphere: function() { + areaSum$1.add(tau$1); } +}; - var start = subject[0], - points, - point; +function areaRingStart$1() { + areaStream$1.point = areaPointFirst$1; +} - while (1) { - // Find first unvisited intersection. - var current = start, - isSubject = true; - while (current.v) if ((current = current.n) === start) return; - points = current.z; - stream.lineStart(); - do { - current.v = current.o.v = true; - if (current.e) { - if (isSubject) { - for (i = 0, n = points.length; i < n; ++i) stream.point((point = points[i])[0], point[1]); - } else { - interpolate(current.x, current.n.x, 1, stream); - } - current = current.n; +function areaRingEnd$1() { + areaPoint$1(lambda00$2, phi00$2); +} + +function areaPointFirst$1(lambda, phi) { + areaStream$1.point = areaPoint$1; + lambda00$2 = lambda, phi00$2 = phi; + lambda *= radians, phi *= radians; + lambda0$2 = lambda, cosPhi0$1 = cos$1(phi = phi / 2 + quarterPi), sinPhi0$1 = sin$1(phi); +} + +function areaPoint$1(lambda, phi) { + lambda *= radians, phi *= radians; + phi = phi / 2 + quarterPi; // half the angular distance from south pole + + // Spherical excess E for a spherical triangle with vertices: south pole, + // previous point, current point. Uses a formula derived from Cagnoli’s + // theorem. See Todhunter, Spherical Trig. (1871), Sec. 103, Eq. (2). + var dLambda = lambda - lambda0$2, + sdLambda = dLambda >= 0 ? 1 : -1, + adLambda = sdLambda * dLambda, + cosPhi = cos$1(phi), + sinPhi = sin$1(phi), + k = sinPhi0$1 * sinPhi, + u = cosPhi0$1 * cosPhi + k * cos$1(adLambda), + v = k * sdLambda * sin$1(adLambda); + areaRingSum$1.add(atan2$1(v, u)); + + // Advance the previous points. + lambda0$2 = lambda, cosPhi0$1 = cosPhi, sinPhi0$1 = sinPhi; +} + +function area$2(object) { + areaSum$1 = new Adder(); + geoStream(object, areaStream$1); + return areaSum$1 * 2; +} + +function spherical(cartesian) { + return [atan2$1(cartesian[1], cartesian[0]), asin$1(cartesian[2])]; +} + +function cartesian(spherical) { + var lambda = spherical[0], phi = spherical[1], cosPhi = cos$1(phi); + return [cosPhi * cos$1(lambda), cosPhi * sin$1(lambda), sin$1(phi)]; +} + +function cartesianDot(a, b) { + return a[0] * b[0] + a[1] * b[1] + a[2] * b[2]; +} + +function cartesianCross(a, b) { + return [a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0]]; +} + +// TODO return a +function cartesianAddInPlace(a, b) { + a[0] += b[0], a[1] += b[1], a[2] += b[2]; +} + +function cartesianScale(vector, k) { + return [vector[0] * k, vector[1] * k, vector[2] * k]; +} + +// TODO return d +function cartesianNormalizeInPlace(d) { + var l = sqrt$2(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]); + d[0] /= l, d[1] /= l, d[2] /= l; +} + +var lambda0$1, phi0, lambda1, phi1, // bounds + lambda2, // previous lambda-coordinate + lambda00$1, phi00$1, // first point + p0, // previous 3D point + deltaSum, + ranges, + range; + +var boundsStream$1 = { + point: boundsPoint$1, + lineStart: boundsLineStart, + lineEnd: boundsLineEnd, + polygonStart: function() { + boundsStream$1.point = boundsRingPoint; + boundsStream$1.lineStart = boundsRingStart; + boundsStream$1.lineEnd = boundsRingEnd; + deltaSum = new Adder(); + areaStream$1.polygonStart(); + }, + polygonEnd: function() { + areaStream$1.polygonEnd(); + boundsStream$1.point = boundsPoint$1; + boundsStream$1.lineStart = boundsLineStart; + boundsStream$1.lineEnd = boundsLineEnd; + if (areaRingSum$1 < 0) lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90); + else if (deltaSum > epsilon$1) phi1 = 90; + else if (deltaSum < -epsilon$1) phi0 = -90; + range[0] = lambda0$1, range[1] = lambda1; + }, + sphere: function() { + lambda0$1 = -(lambda1 = 180), phi0 = -(phi1 = 90); + } +}; + +function boundsPoint$1(lambda, phi) { + ranges.push(range = [lambda0$1 = lambda, lambda1 = lambda]); + if (phi < phi0) phi0 = phi; + if (phi > phi1) phi1 = phi; +} + +function linePoint(lambda, phi) { + var p = cartesian([lambda * radians, phi * radians]); + if (p0) { + var normal = cartesianCross(p0, p), + equatorial = [normal[1], -normal[0], 0], + inflection = cartesianCross(equatorial, normal); + cartesianNormalizeInPlace(inflection); + inflection = spherical(inflection); + var delta = lambda - lambda2, + sign = delta > 0 ? 1 : -1, + lambdai = inflection[0] * degrees * sign, + phii, + antimeridian = abs$1(delta) > 180; + if (antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) { + phii = inflection[1] * degrees; + if (phii > phi1) phi1 = phii; + } else if (lambdai = (lambdai + 360) % 360 - 180, antimeridian ^ (sign * lambda2 < lambdai && lambdai < sign * lambda)) { + phii = -inflection[1] * degrees; + if (phii < phi0) phi0 = phii; + } else { + if (phi < phi0) phi0 = phi; + if (phi > phi1) phi1 = phi; + } + if (antimeridian) { + if (lambda < lambda2) { + if (angle(lambda0$1, lambda) > angle(lambda0$1, lambda1)) lambda1 = lambda; } else { - if (isSubject) { - points = current.p.z; - for (i = points.length - 1; i >= 0; --i) stream.point((point = points[i])[0], point[1]); + if (angle(lambda, lambda1) > angle(lambda0$1, lambda1)) lambda0$1 = lambda; + } + } else { + if (lambda1 >= lambda0$1) { + if (lambda < lambda0$1) lambda0$1 = lambda; + if (lambda > lambda1) lambda1 = lambda; + } else { + if (lambda > lambda2) { + if (angle(lambda0$1, lambda) > angle(lambda0$1, lambda1)) lambda1 = lambda; } else { - interpolate(current.x, current.p.x, -1, stream); + if (angle(lambda, lambda1) > angle(lambda0$1, lambda1)) lambda0$1 = lambda; } - current = current.p; } - current = current.o; - points = current.z; - isSubject = !isSubject; - } while (!current.v); - stream.lineEnd(); + } + } else { + ranges.push(range = [lambda0$1 = lambda, lambda1 = lambda]); } + if (phi < phi0) phi0 = phi; + if (phi > phi1) phi1 = phi; + p0 = p, lambda2 = lambda; } -function link$1(array) { - if (!(n = array.length)) return; - var n, - i = 0, - a = array[0], - b; - while (++i < n) { - a.n = b = array[i]; - b.p = a; - a = b; +function boundsLineStart() { + boundsStream$1.point = linePoint; +} + +function boundsLineEnd() { + range[0] = lambda0$1, range[1] = lambda1; + boundsStream$1.point = boundsPoint$1; + p0 = null; +} + +function boundsRingPoint(lambda, phi) { + if (p0) { + var delta = lambda - lambda2; + deltaSum.add(abs$1(delta) > 180 ? delta + (delta > 0 ? 360 : -360) : delta); + } else { + lambda00$1 = lambda, phi00$1 = phi; } - a.n = b = array[0]; - b.p = a; + areaStream$1.point(lambda, phi); + linePoint(lambda, phi); } -var sum$1 = adder(); +function boundsRingStart() { + areaStream$1.lineStart(); +} -function longitude(point) { - if (abs(point[0]) <= pi$3) - return point[0]; - else - return sign(point[0]) * ((abs(point[0]) + pi$3) % tau$3 - pi$3); +function boundsRingEnd() { + boundsRingPoint(lambda00$1, phi00$1); + areaStream$1.lineEnd(); + if (abs$1(deltaSum) > epsilon$1) lambda0$1 = -(lambda1 = 180); + range[0] = lambda0$1, range[1] = lambda1; + p0 = null; } -function polygonContains(polygon, point) { - var lambda = longitude(point), - phi = point[1], - sinPhi = sin$1(phi), - normal = [sin$1(lambda), -cos$1(lambda), 0], - angle = 0, - winding = 0; +// Finds the left-right distance between two longitudes. +// This is almost the same as (lambda1 - lambda0 + 360°) % 360°, except that we want +// the distance between ±180° to be 360°. +function angle(lambda0, lambda1) { + return (lambda1 -= lambda0) < 0 ? lambda1 + 360 : lambda1; +} - sum$1.reset(); +function rangeCompare(a, b) { + return a[0] - b[0]; +} - if (sinPhi === 1) phi = halfPi$2 + epsilon$2; - else if (sinPhi === -1) phi = -halfPi$2 - epsilon$2; +function rangeContains(range, x) { + return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x; +} - for (var i = 0, n = polygon.length; i < n; ++i) { - if (!(m = (ring = polygon[i]).length)) continue; - var ring, - m, - point0 = ring[m - 1], - lambda0 = longitude(point0), - phi0 = point0[1] / 2 + quarterPi, - sinPhi0 = sin$1(phi0), - cosPhi0 = cos$1(phi0); +function bounds(feature) { + var i, n, a, b, merged, deltaMax, delta; - for (var j = 0; j < m; ++j, lambda0 = lambda1, sinPhi0 = sinPhi1, cosPhi0 = cosPhi1, point0 = point1) { - var point1 = ring[j], - lambda1 = longitude(point1), - phi1 = point1[1] / 2 + quarterPi, - sinPhi1 = sin$1(phi1), - cosPhi1 = cos$1(phi1), - delta = lambda1 - lambda0, - sign = delta >= 0 ? 1 : -1, - absDelta = sign * delta, - antimeridian = absDelta > pi$3, - k = sinPhi0 * sinPhi1; + phi1 = lambda1 = -(lambda0$1 = phi0 = Infinity); + ranges = []; + geoStream(feature, boundsStream$1); - sum$1.add(atan2(k * sign * sin$1(absDelta), cosPhi0 * cosPhi1 + k * cos$1(absDelta))); - angle += antimeridian ? delta + sign * tau$3 : delta; + // First, sort ranges by their minimum longitudes. + if (n = ranges.length) { + ranges.sort(rangeCompare); - // Are the longitudes either side of the point’s meridian (lambda), - // and are the latitudes smaller than the parallel (phi)? - if (antimeridian ^ lambda0 >= lambda ^ lambda1 >= lambda) { - var arc = cartesianCross(cartesian(point0), cartesian(point1)); - cartesianNormalizeInPlace(arc); - var intersection = cartesianCross(normal, arc); - cartesianNormalizeInPlace(intersection); - var phiArc = (antimeridian ^ delta >= 0 ? -1 : 1) * asin(intersection[2]); - if (phi > phiArc || phi === phiArc && (arc[0] || arc[1])) { - winding += antimeridian ^ delta >= 0 ? 1 : -1; - } + // Then, merge any ranges that overlap. + for (i = 1, a = ranges[0], merged = [a]; i < n; ++i) { + b = ranges[i]; + if (rangeContains(a, b[0]) || rangeContains(a, b[1])) { + if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1]; + if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0]; + } else { + merged.push(a = b); } } + + // Finally, find the largest gap between the merged ranges. + // The final bounding box will be the inverse of this gap. + for (deltaMax = -Infinity, n = merged.length - 1, i = 0, a = merged[n]; i <= n; a = b, ++i) { + b = merged[i]; + if ((delta = angle(a[1], b[0])) > deltaMax) deltaMax = delta, lambda0$1 = b[0], lambda1 = a[1]; + } } - // First, determine whether the South pole is inside or outside: - // - // It is inside if: - // * the polygon winds around it in a clockwise direction. - // * the polygon does not (cumulatively) wind around it, but has a negative - // (counter-clockwise) area. - // - // Second, count the (signed) number of times a segment crosses a lambda - // from the point to the South pole. If it is zero, then the point is the - // same side as the South pole. + ranges = range = null; - return (angle < -epsilon$2 || angle < epsilon$2 && sum$1 < -epsilon$2) ^ (winding & 1); + return lambda0$1 === Infinity || phi0 === Infinity + ? [[NaN, NaN], [NaN, NaN]] + : [[lambda0$1, phi0], [lambda1, phi1]]; } -function clip(pointVisible, clipLine, interpolate, start) { - return function(sink) { - var line = clipLine(sink), - ringBuffer = clipBuffer(), - ringSink = clipLine(ringBuffer), - polygonStarted = false, - polygon, - segments, - ring; +var W0, W1, + X0$1, Y0$1, Z0$1, + X1$1, Y1$1, Z1$1, + X2$1, Y2$1, Z2$1, + lambda00, phi00, // first point + x0$4, y0$4, z0; // previous point - var clip = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, - polygonStart: function() { - clip.point = pointRing; - clip.lineStart = ringStart; - clip.lineEnd = ringEnd; - segments = []; - polygon = []; - }, - polygonEnd: function() { - clip.point = point; - clip.lineStart = lineStart; - clip.lineEnd = lineEnd; - segments = merge(segments); - var startInside = polygonContains(polygon, start); - if (segments.length) { - if (!polygonStarted) sink.polygonStart(), polygonStarted = true; - clipRejoin(segments, compareIntersection, startInside, interpolate, sink); - } else if (startInside) { - if (!polygonStarted) sink.polygonStart(), polygonStarted = true; - sink.lineStart(); - interpolate(null, null, 1, sink); - sink.lineEnd(); - } - if (polygonStarted) sink.polygonEnd(), polygonStarted = false; - segments = polygon = null; - }, - sphere: function() { - sink.polygonStart(); - sink.lineStart(); - interpolate(null, null, 1, sink); - sink.lineEnd(); - sink.polygonEnd(); - } - }; +var centroidStream$1 = { + sphere: noop$1, + point: centroidPoint$1, + lineStart: centroidLineStart$1, + lineEnd: centroidLineEnd$1, + polygonStart: function() { + centroidStream$1.lineStart = centroidRingStart$1; + centroidStream$1.lineEnd = centroidRingEnd$1; + }, + polygonEnd: function() { + centroidStream$1.lineStart = centroidLineStart$1; + centroidStream$1.lineEnd = centroidLineEnd$1; + } +}; - function point(lambda, phi) { - if (pointVisible(lambda, phi)) sink.point(lambda, phi); - } +// Arithmetic mean of Cartesian vectors. +function centroidPoint$1(lambda, phi) { + lambda *= radians, phi *= radians; + var cosPhi = cos$1(phi); + centroidPointCartesian(cosPhi * cos$1(lambda), cosPhi * sin$1(lambda), sin$1(phi)); +} - function pointLine(lambda, phi) { - line.point(lambda, phi); - } +function centroidPointCartesian(x, y, z) { + ++W0; + X0$1 += (x - X0$1) / W0; + Y0$1 += (y - Y0$1) / W0; + Z0$1 += (z - Z0$1) / W0; +} - function lineStart() { - clip.point = pointLine; - line.lineStart(); - } +function centroidLineStart$1() { + centroidStream$1.point = centroidLinePointFirst; +} - function lineEnd() { - clip.point = point; - line.lineEnd(); - } +function centroidLinePointFirst(lambda, phi) { + lambda *= radians, phi *= radians; + var cosPhi = cos$1(phi); + x0$4 = cosPhi * cos$1(lambda); + y0$4 = cosPhi * sin$1(lambda); + z0 = sin$1(phi); + centroidStream$1.point = centroidLinePoint; + centroidPointCartesian(x0$4, y0$4, z0); +} - function pointRing(lambda, phi) { - ring.push([lambda, phi]); - ringSink.point(lambda, phi); - } +function centroidLinePoint(lambda, phi) { + lambda *= radians, phi *= radians; + var cosPhi = cos$1(phi), + x = cosPhi * cos$1(lambda), + y = cosPhi * sin$1(lambda), + z = sin$1(phi), + w = atan2$1(sqrt$2((w = y0$4 * z - z0 * y) * w + (w = z0 * x - x0$4 * z) * w + (w = x0$4 * y - y0$4 * x) * w), x0$4 * x + y0$4 * y + z0 * z); + W1 += w; + X1$1 += w * (x0$4 + (x0$4 = x)); + Y1$1 += w * (y0$4 + (y0$4 = y)); + Z1$1 += w * (z0 + (z0 = z)); + centroidPointCartesian(x0$4, y0$4, z0); +} - function ringStart() { - ringSink.lineStart(); - ring = []; - } +function centroidLineEnd$1() { + centroidStream$1.point = centroidPoint$1; +} - function ringEnd() { - pointRing(ring[0][0], ring[0][1]); - ringSink.lineEnd(); +// See J. E. Brock, The Inertia Tensor for a Spherical Triangle, +// J. Applied Mechanics 42, 239 (1975). +function centroidRingStart$1() { + centroidStream$1.point = centroidRingPointFirst; +} - var clean = ringSink.clean(), - ringSegments = ringBuffer.result(), - i, n = ringSegments.length, m, - segment, - point; +function centroidRingEnd$1() { + centroidRingPoint(lambda00, phi00); + centroidStream$1.point = centroidPoint$1; +} - ring.pop(); - polygon.push(ring); - ring = null; +function centroidRingPointFirst(lambda, phi) { + lambda00 = lambda, phi00 = phi; + lambda *= radians, phi *= radians; + centroidStream$1.point = centroidRingPoint; + var cosPhi = cos$1(phi); + x0$4 = cosPhi * cos$1(lambda); + y0$4 = cosPhi * sin$1(lambda); + z0 = sin$1(phi); + centroidPointCartesian(x0$4, y0$4, z0); +} - if (!n) return; +function centroidRingPoint(lambda, phi) { + lambda *= radians, phi *= radians; + var cosPhi = cos$1(phi), + x = cosPhi * cos$1(lambda), + y = cosPhi * sin$1(lambda), + z = sin$1(phi), + cx = y0$4 * z - z0 * y, + cy = z0 * x - x0$4 * z, + cz = x0$4 * y - y0$4 * x, + m = hypot(cx, cy, cz), + w = asin$1(m), // line weight = angle + v = m && -w / m; // area weight multiplier + X2$1.add(v * cx); + Y2$1.add(v * cy); + Z2$1.add(v * cz); + W1 += w; + X1$1 += w * (x0$4 + (x0$4 = x)); + Y1$1 += w * (y0$4 + (y0$4 = y)); + Z1$1 += w * (z0 + (z0 = z)); + centroidPointCartesian(x0$4, y0$4, z0); +} - // No intersections. - if (clean & 1) { - segment = ringSegments[0]; - if ((m = segment.length - 1) > 0) { - if (!polygonStarted) sink.polygonStart(), polygonStarted = true; - sink.lineStart(); - for (i = 0; i < m; ++i) sink.point((point = segment[i])[0], point[1]); - sink.lineEnd(); - } - return; - } +function centroid$1(object) { + W0 = W1 = + X0$1 = Y0$1 = Z0$1 = + X1$1 = Y1$1 = Z1$1 = 0; + X2$1 = new Adder(); + Y2$1 = new Adder(); + Z2$1 = new Adder(); + geoStream(object, centroidStream$1); + + var x = +X2$1, + y = +Y2$1, + z = +Z2$1, + m = hypot(x, y, z); - // Rejoin connected segments. - // TODO reuse ringBuffer.rejoin()? - if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift())); + // If the area-weighted ccentroid is undefined, fall back to length-weighted ccentroid. + if (m < epsilon2) { + x = X1$1, y = Y1$1, z = Z1$1; + // If the feature has zero length, fall back to arithmetic mean of point vectors. + if (W1 < epsilon$1) x = X0$1, y = Y0$1, z = Z0$1; + m = hypot(x, y, z); + // If the feature still has an undefined ccentroid, then return. + if (m < epsilon2) return [NaN, NaN]; + } - segments.push(ringSegments.filter(validSegment)); - } + return [atan2$1(y, x) * degrees, asin$1(z / m) * degrees]; +} - return clip; +function constant$3(x) { + return function() { + return x; }; } -function validSegment(segment) { - return segment.length > 1; +function compose(a, b) { + + function compose(x, y) { + return x = a(x, y), b(x[0], x[1]); + } + + if (a.invert && b.invert) compose.invert = function(x, y) { + return x = b.invert(x, y), x && a.invert(x[0], x[1]); + }; + + return compose; } -// Intersections are sorted along the clip edge. For both antimeridian cutting -// and circle clipping, the same comparison is used. -function compareIntersection(a, b) { - return ((a = a.x)[0] < 0 ? a[1] - halfPi$2 - epsilon$2 : halfPi$2 - a[1]) - - ((b = b.x)[0] < 0 ? b[1] - halfPi$2 - epsilon$2 : halfPi$2 - b[1]); +function rotationIdentity(lambda, phi) { + return [abs$1(lambda) > pi$1 ? lambda + Math.round(-lambda / tau$1) * tau$1 : lambda, phi]; } -var clipAntimeridian = clip( - function() { return true; }, - clipAntimeridianLine, - clipAntimeridianInterpolate, - [-pi$3, -halfPi$2] -); +rotationIdentity.invert = rotationIdentity; -// Takes a line and cuts into visible segments. Return values: 0 - there were -// intersections or the line was empty; 1 - no intersections; 2 - there were -// intersections, and the first and last segments should be rejoined. -function clipAntimeridianLine(stream) { - var lambda0 = NaN, - phi0 = NaN, - sign0 = NaN, - clean; // no intersections +function rotateRadians(deltaLambda, deltaPhi, deltaGamma) { + return (deltaLambda %= tau$1) ? (deltaPhi || deltaGamma ? compose(rotationLambda(deltaLambda), rotationPhiGamma(deltaPhi, deltaGamma)) + : rotationLambda(deltaLambda)) + : (deltaPhi || deltaGamma ? rotationPhiGamma(deltaPhi, deltaGamma) + : rotationIdentity); +} - return { - lineStart: function() { - stream.lineStart(); - clean = 1; - }, - point: function(lambda1, phi1) { - var sign1 = lambda1 > 0 ? pi$3 : -pi$3, - delta = abs(lambda1 - lambda0); - if (abs(delta - pi$3) < epsilon$2) { // line crosses a pole - stream.point(lambda0, phi0 = (phi0 + phi1) / 2 > 0 ? halfPi$2 : -halfPi$2); - stream.point(sign0, phi0); - stream.lineEnd(); - stream.lineStart(); - stream.point(sign1, phi0); - stream.point(lambda1, phi0); - clean = 0; - } else if (sign0 !== sign1 && delta >= pi$3) { // line crosses antimeridian - if (abs(lambda0 - sign0) < epsilon$2) lambda0 -= sign0 * epsilon$2; // handle degeneracies - if (abs(lambda1 - sign1) < epsilon$2) lambda1 -= sign1 * epsilon$2; - phi0 = clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1); - stream.point(sign0, phi0); - stream.lineEnd(); - stream.lineStart(); - stream.point(sign1, phi0); - clean = 0; - } - stream.point(lambda0 = lambda1, phi0 = phi1); - sign0 = sign1; - }, - lineEnd: function() { - stream.lineEnd(); - lambda0 = phi0 = NaN; - }, - clean: function() { - return 2 - clean; // if intersections, rejoin first and last segments - } +function forwardRotationLambda(deltaLambda) { + return function(lambda, phi) { + return lambda += deltaLambda, [lambda > pi$1 ? lambda - tau$1 : lambda < -pi$1 ? lambda + tau$1 : lambda, phi]; }; } -function clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1) { - var cosPhi0, - cosPhi1, - sinLambda0Lambda1 = sin$1(lambda0 - lambda1); - return abs(sinLambda0Lambda1) > epsilon$2 - ? atan((sin$1(phi0) * (cosPhi1 = cos$1(phi1)) * sin$1(lambda1) - - sin$1(phi1) * (cosPhi0 = cos$1(phi0)) * sin$1(lambda0)) - / (cosPhi0 * cosPhi1 * sinLambda0Lambda1)) - : (phi0 + phi1) / 2; +function rotationLambda(deltaLambda) { + var rotation = forwardRotationLambda(deltaLambda); + rotation.invert = forwardRotationLambda(-deltaLambda); + return rotation; } -function clipAntimeridianInterpolate(from, to, direction, stream) { - var phi; - if (from == null) { - phi = direction * halfPi$2; - stream.point(-pi$3, phi); - stream.point(0, phi); - stream.point(pi$3, phi); - stream.point(pi$3, 0); - stream.point(pi$3, -phi); - stream.point(0, -phi); - stream.point(-pi$3, -phi); - stream.point(-pi$3, 0); - stream.point(-pi$3, phi); - } else if (abs(from[0] - to[0]) > epsilon$2) { - var lambda = from[0] < to[0] ? pi$3 : -pi$3; - phi = direction * lambda / 2; - stream.point(-lambda, phi); - stream.point(0, phi); - stream.point(lambda, phi); - } else { - stream.point(to[0], to[1]); +function rotationPhiGamma(deltaPhi, deltaGamma) { + var cosDeltaPhi = cos$1(deltaPhi), + sinDeltaPhi = sin$1(deltaPhi), + cosDeltaGamma = cos$1(deltaGamma), + sinDeltaGamma = sin$1(deltaGamma); + + function rotation(lambda, phi) { + var cosPhi = cos$1(phi), + x = cos$1(lambda) * cosPhi, + y = sin$1(lambda) * cosPhi, + z = sin$1(phi), + k = z * cosDeltaPhi + x * sinDeltaPhi; + return [ + atan2$1(y * cosDeltaGamma - k * sinDeltaGamma, x * cosDeltaPhi - z * sinDeltaPhi), + asin$1(k * cosDeltaGamma + y * sinDeltaGamma) + ]; } -} -function clipCircle(radius) { - var cr = cos$1(radius), - delta = 6 * radians, - smallRadius = cr > 0, - notHemisphere = abs(cr) > epsilon$2; // TODO optimise for this common case + rotation.invert = function(lambda, phi) { + var cosPhi = cos$1(phi), + x = cos$1(lambda) * cosPhi, + y = sin$1(lambda) * cosPhi, + z = sin$1(phi), + k = z * cosDeltaGamma - y * sinDeltaGamma; + return [ + atan2$1(y * cosDeltaGamma + z * sinDeltaGamma, x * cosDeltaPhi + k * sinDeltaPhi), + asin$1(k * cosDeltaPhi - x * sinDeltaPhi) + ]; + }; - function interpolate(from, to, direction, stream) { - circleStream(stream, radius, delta, direction, from, to); - } + return rotation; +} - function visible(lambda, phi) { - return cos$1(lambda) * cos$1(phi) > cr; - } +function rotation(rotate) { + rotate = rotateRadians(rotate[0] * radians, rotate[1] * radians, rotate.length > 2 ? rotate[2] * radians : 0); - // Takes a line and cuts into visible segments. Return values used for polygon - // clipping: 0 - there were intersections or the line was empty; 1 - no - // intersections 2 - there were intersections, and the first and last segments - // should be rejoined. - function clipLine(stream) { - var point0, // previous point - c0, // code for previous point - v0, // visibility of previous point - v00, // visibility of first point - clean; // no intersections - return { - lineStart: function() { - v00 = v0 = false; - clean = 1; - }, - point: function(lambda, phi) { - var point1 = [lambda, phi], - point2, - v = visible(lambda, phi), - c = smallRadius - ? v ? 0 : code(lambda, phi) - : v ? code(lambda + (lambda < 0 ? pi$3 : -pi$3), phi) : 0; - if (!point0 && (v00 = v0 = v)) stream.lineStart(); - // Handle degeneracies. - // TODO ignore if not clipping polygons. - if (v !== v0) { - point2 = intersect(point0, point1); - if (!point2 || pointEqual(point0, point2) || pointEqual(point1, point2)) { - point1[0] += epsilon$2; - point1[1] += epsilon$2; - v = visible(point1[0], point1[1]); - } - } - if (v !== v0) { - clean = 0; - if (v) { - // outside going in - stream.lineStart(); - point2 = intersect(point1, point0); - stream.point(point2[0], point2[1]); - } else { - // inside going out - point2 = intersect(point0, point1); - stream.point(point2[0], point2[1]); - stream.lineEnd(); - } - point0 = point2; - } else if (notHemisphere && point0 && smallRadius ^ v) { - var t; - // If the codes for two points are different, or are both zero, - // and there this segment intersects with the small circle. - if (!(c & c0) && (t = intersect(point1, point0, true))) { - clean = 0; - if (smallRadius) { - stream.lineStart(); - stream.point(t[0][0], t[0][1]); - stream.point(t[1][0], t[1][1]); - stream.lineEnd(); - } else { - stream.point(t[1][0], t[1][1]); - stream.lineEnd(); - stream.lineStart(); - stream.point(t[0][0], t[0][1]); - } - } - } - if (v && (!point0 || !pointEqual(point0, point1))) { - stream.point(point1[0], point1[1]); - } - point0 = point1, v0 = v, c0 = c; - }, - lineEnd: function() { - if (v0) stream.lineEnd(); - point0 = null; - }, - // Rejoin first and last segments if there were intersections and the first - // and last points were visible. - clean: function() { - return clean | ((v00 && v0) << 1); - } - }; + function forward(coordinates) { + coordinates = rotate(coordinates[0] * radians, coordinates[1] * radians); + return coordinates[0] *= degrees, coordinates[1] *= degrees, coordinates; } - // Intersects the great circle between a and b with the clip circle. - function intersect(a, b, two) { - var pa = cartesian(a), - pb = cartesian(b); - - // We have two planes, n1.p = d1 and n2.p = d2. - // Find intersection line p(t) = c1 n1 + c2 n2 + t (n1 ⨯ n2). - var n1 = [1, 0, 0], // normal - n2 = cartesianCross(pa, pb), - n2n2 = cartesianDot(n2, n2), - n1n2 = n2[0], // cartesianDot(n1, n2), - determinant = n2n2 - n1n2 * n1n2; + forward.invert = function(coordinates) { + coordinates = rotate.invert(coordinates[0] * radians, coordinates[1] * radians); + return coordinates[0] *= degrees, coordinates[1] *= degrees, coordinates; + }; - // Two polar points. - if (!determinant) return !two && a; + return forward; +} - var c1 = cr * n2n2 / determinant, - c2 = -cr * n1n2 / determinant, - n1xn2 = cartesianCross(n1, n2), - A = cartesianScale(n1, c1), - B = cartesianScale(n2, c2); - cartesianAddInPlace(A, B); +// Generates a circle centered at [0°, 0°], with a given radius and precision. +function circleStream(stream, radius, delta, direction, t0, t1) { + if (!delta) return; + var cosRadius = cos$1(radius), + sinRadius = sin$1(radius), + step = direction * delta; + if (t0 == null) { + t0 = radius + direction * tau$1; + t1 = radius - step / 2; + } else { + t0 = circleRadius(cosRadius, t0); + t1 = circleRadius(cosRadius, t1); + if (direction > 0 ? t0 < t1 : t0 > t1) t0 += direction * tau$1; + } + for (var point, t = t0; direction > 0 ? t > t1 : t < t1; t -= step) { + point = spherical([cosRadius, -sinRadius * cos$1(t), -sinRadius * sin$1(t)]); + stream.point(point[0], point[1]); + } +} - // Solve |p(t)|^2 = 1. - var u = n1xn2, - w = cartesianDot(A, u), - uu = cartesianDot(u, u), - t2 = w * w - uu * (cartesianDot(A, A) - 1); +// Returns the signed angle of a cartesian point relative to [cosRadius, 0, 0]. +function circleRadius(cosRadius, point) { + point = cartesian(point), point[0] -= cosRadius; + cartesianNormalizeInPlace(point); + var radius = acos$1(-point[1]); + return ((-point[2] < 0 ? -radius : radius) + tau$1 - epsilon$1) % tau$1; +} - if (t2 < 0) return; +function circle$2() { + var center = constant$3([0, 0]), + radius = constant$3(90), + precision = constant$3(6), + ring, + rotate, + stream = {point: point}; - var t = sqrt(t2), - q = cartesianScale(u, (-w - t) / uu); - cartesianAddInPlace(q, A); - q = spherical(q); + function point(x, y) { + ring.push(x = rotate(x, y)); + x[0] *= degrees, x[1] *= degrees; + } - if (!two) return q; + function circle() { + var c = center.apply(this, arguments), + r = radius.apply(this, arguments) * radians, + p = precision.apply(this, arguments) * radians; + ring = []; + rotate = rotateRadians(-c[0] * radians, -c[1] * radians, 0).invert; + circleStream(stream, r, p, 1); + c = {type: "Polygon", coordinates: [ring]}; + ring = rotate = null; + return c; + } - // Two intersection points. - var lambda0 = a[0], - lambda1 = b[0], - phi0 = a[1], - phi1 = b[1], - z; + circle.center = function(_) { + return arguments.length ? (center = typeof _ === "function" ? _ : constant$3([+_[0], +_[1]]), circle) : center; + }; - if (lambda1 < lambda0) z = lambda0, lambda0 = lambda1, lambda1 = z; + circle.radius = function(_) { + return arguments.length ? (radius = typeof _ === "function" ? _ : constant$3(+_), circle) : radius; + }; - var delta = lambda1 - lambda0, - polar = abs(delta - pi$3) < epsilon$2, - meridian = polar || delta < epsilon$2; + circle.precision = function(_) { + return arguments.length ? (precision = typeof _ === "function" ? _ : constant$3(+_), circle) : precision; + }; - if (!polar && phi1 < phi0) z = phi0, phi0 = phi1, phi1 = z; + return circle; +} - // Check that the first point is between a and b. - if (meridian - ? polar - ? phi0 + phi1 > 0 ^ q[1] < (abs(q[0] - lambda0) < epsilon$2 ? phi0 : phi1) - : phi0 <= q[1] && q[1] <= phi1 - : delta > pi$3 ^ (lambda0 <= q[0] && q[0] <= lambda1)) { - var q1 = cartesianScale(u, (-w + t) / uu); - cartesianAddInPlace(q1, A); - return [q, spherical(q1)]; +function clipBuffer() { + var lines = [], + line; + return { + point: function(x, y, m) { + line.push([x, y, m]); + }, + lineStart: function() { + lines.push(line = []); + }, + lineEnd: noop$1, + rejoin: function() { + if (lines.length > 1) lines.push(lines.pop().concat(lines.shift())); + }, + result: function() { + var result = lines; + lines = []; + line = null; + return result; } - } - - // Generates a 4-bit vector representing the location of a point relative to - // the small circle's bounding box. - function code(lambda, phi) { - var r = smallRadius ? radius : pi$3 - radius, - code = 0; - if (lambda < -r) code |= 1; // left - else if (lambda > r) code |= 2; // right - if (phi < -r) code |= 4; // below - else if (phi > r) code |= 8; // above - return code; - } + }; +} - return clip(visible, clipLine, interpolate, smallRadius ? [0, -radius] : [-pi$3, radius - pi$3]); +function pointEqual(a, b) { + return abs$1(a[0] - b[0]) < epsilon$1 && abs$1(a[1] - b[1]) < epsilon$1; } -function clipLine(a, b, x0, y0, x1, y1) { - var ax = a[0], - ay = a[1], - bx = b[0], - by = b[1], - t0 = 0, - t1 = 1, - dx = bx - ax, - dy = by - ay, - r; +function Intersection(point, points, other, entry) { + this.x = point; + this.z = points; + this.o = other; // another intersection + this.e = entry; // is an entry? + this.v = false; // visited + this.n = this.p = null; // next & previous +} - r = x0 - ax; - if (!dx && r > 0) return; - r /= dx; - if (dx < 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } else if (dx > 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } +// A generalized polygon clipping algorithm: given a polygon that has been cut +// into its visible line segments, and rejoins the segments by interpolating +// along the clip edge. +function clipRejoin(segments, compareIntersection, startInside, interpolate, stream) { + var subject = [], + clip = [], + i, + n; - r = x1 - ax; - if (!dx && r < 0) return; - r /= dx; - if (dx < 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } else if (dx > 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } + segments.forEach(function(segment) { + if ((n = segment.length - 1) <= 0) return; + var n, p0 = segment[0], p1 = segment[n], x; - r = y0 - ay; - if (!dy && r > 0) return; - r /= dy; - if (dy < 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } else if (dy > 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } + if (pointEqual(p0, p1)) { + if (!p0[2] && !p1[2]) { + stream.lineStart(); + for (i = 0; i < n; ++i) stream.point((p0 = segment[i])[0], p0[1]); + stream.lineEnd(); + return; + } + // handle degenerate cases by moving the point + p1[0] += 2 * epsilon$1; + } - r = y1 - ay; - if (!dy && r < 0) return; - r /= dy; - if (dy < 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } else if (dy > 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } + subject.push(x = new Intersection(p0, segment, null, true)); + clip.push(x.o = new Intersection(p0, null, x, false)); + subject.push(x = new Intersection(p1, segment, null, false)); + clip.push(x.o = new Intersection(p1, null, x, true)); + }); - if (t0 > 0) a[0] = ax + t0 * dx, a[1] = ay + t0 * dy; - if (t1 < 1) b[0] = ax + t1 * dx, b[1] = ay + t1 * dy; - return true; -} + if (!subject.length) return; -var clipMax = 1e9, clipMin = -clipMax; + clip.sort(compareIntersection); + link$1(subject); + link$1(clip); -// TODO Use d3-polygon’s polygonContains here for the ring check? -// TODO Eliminate duplicate buffering in clipBuffer and polygon.push? + for (i = 0, n = clip.length; i < n; ++i) { + clip[i].e = startInside = !startInside; + } -function clipRectangle(x0, y0, x1, y1) { + var start = subject[0], + points, + point; - function visible(x, y) { - return x0 <= x && x <= x1 && y0 <= y && y <= y1; + while (1) { + // Find first unvisited intersection. + var current = start, + isSubject = true; + while (current.v) if ((current = current.n) === start) return; + points = current.z; + stream.lineStart(); + do { + current.v = current.o.v = true; + if (current.e) { + if (isSubject) { + for (i = 0, n = points.length; i < n; ++i) stream.point((point = points[i])[0], point[1]); + } else { + interpolate(current.x, current.n.x, 1, stream); + } + current = current.n; + } else { + if (isSubject) { + points = current.p.z; + for (i = points.length - 1; i >= 0; --i) stream.point((point = points[i])[0], point[1]); + } else { + interpolate(current.x, current.p.x, -1, stream); + } + current = current.p; + } + current = current.o; + points = current.z; + isSubject = !isSubject; + } while (!current.v); + stream.lineEnd(); } +} - function interpolate(from, to, direction, stream) { - var a = 0, a1 = 0; - if (from == null - || (a = corner(from, direction)) !== (a1 = corner(to, direction)) - || comparePoint(from, to) < 0 ^ direction > 0) { - do stream.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0); - while ((a = (a + direction + 4) % 4) !== a1); - } else { - stream.point(to[0], to[1]); - } +function link$1(array) { + if (!(n = array.length)) return; + var n, + i = 0, + a = array[0], + b; + while (++i < n) { + a.n = b = array[i]; + b.p = a; + a = b; } + a.n = b = array[0]; + b.p = a; +} - function corner(p, direction) { - return abs(p[0] - x0) < epsilon$2 ? direction > 0 ? 0 : 3 - : abs(p[0] - x1) < epsilon$2 ? direction > 0 ? 2 : 1 - : abs(p[1] - y0) < epsilon$2 ? direction > 0 ? 1 : 0 - : direction > 0 ? 3 : 2; // abs(p[1] - y1) < epsilon - } +function longitude(point) { + if (abs$1(point[0]) <= pi$1) + return point[0]; + else + return sign$1(point[0]) * ((abs$1(point[0]) + pi$1) % tau$1 - pi$1); +} - function compareIntersection(a, b) { - return comparePoint(a.x, b.x); - } +function polygonContains(polygon, point) { + var lambda = longitude(point), + phi = point[1], + sinPhi = sin$1(phi), + normal = [sin$1(lambda), -cos$1(lambda), 0], + angle = 0, + winding = 0; - function comparePoint(a, b) { - var ca = corner(a, 1), - cb = corner(b, 1); - return ca !== cb ? ca - cb - : ca === 0 ? b[1] - a[1] - : ca === 1 ? a[0] - b[0] - : ca === 2 ? a[1] - b[1] - : b[0] - a[0]; - } + var sum = new Adder(); - return function(stream) { - var activeStream = stream, - bufferStream = clipBuffer(), - segments, - polygon, - ring, - x__, y__, v__, // first point - x_, y_, v_, // previous point - first, - clean; + if (sinPhi === 1) phi = halfPi$1 + epsilon$1; + else if (sinPhi === -1) phi = -halfPi$1 - epsilon$1; - var clipStream = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, - polygonStart: polygonStart, - polygonEnd: polygonEnd - }; + for (var i = 0, n = polygon.length; i < n; ++i) { + if (!(m = (ring = polygon[i]).length)) continue; + var ring, + m, + point0 = ring[m - 1], + lambda0 = longitude(point0), + phi0 = point0[1] / 2 + quarterPi, + sinPhi0 = sin$1(phi0), + cosPhi0 = cos$1(phi0); - function point(x, y) { - if (visible(x, y)) activeStream.point(x, y); - } + for (var j = 0; j < m; ++j, lambda0 = lambda1, sinPhi0 = sinPhi1, cosPhi0 = cosPhi1, point0 = point1) { + var point1 = ring[j], + lambda1 = longitude(point1), + phi1 = point1[1] / 2 + quarterPi, + sinPhi1 = sin$1(phi1), + cosPhi1 = cos$1(phi1), + delta = lambda1 - lambda0, + sign = delta >= 0 ? 1 : -1, + absDelta = sign * delta, + antimeridian = absDelta > pi$1, + k = sinPhi0 * sinPhi1; - function polygonInside() { - var winding = 0; + sum.add(atan2$1(k * sign * sin$1(absDelta), cosPhi0 * cosPhi1 + k * cos$1(absDelta))); + angle += antimeridian ? delta + sign * tau$1 : delta; - for (var i = 0, n = polygon.length; i < n; ++i) { - for (var ring = polygon[i], j = 1, m = ring.length, point = ring[0], a0, a1, b0 = point[0], b1 = point[1]; j < m; ++j) { - a0 = b0, a1 = b1, point = ring[j], b0 = point[0], b1 = point[1]; - if (a1 <= y1) { if (b1 > y1 && (b0 - a0) * (y1 - a1) > (b1 - a1) * (x0 - a0)) ++winding; } - else { if (b1 <= y1 && (b0 - a0) * (y1 - a1) < (b1 - a1) * (x0 - a0)) --winding; } + // Are the longitudes either side of the point’s meridian (lambda), + // and are the latitudes smaller than the parallel (phi)? + if (antimeridian ^ lambda0 >= lambda ^ lambda1 >= lambda) { + var arc = cartesianCross(cartesian(point0), cartesian(point1)); + cartesianNormalizeInPlace(arc); + var intersection = cartesianCross(normal, arc); + cartesianNormalizeInPlace(intersection); + var phiArc = (antimeridian ^ delta >= 0 ? -1 : 1) * asin$1(intersection[2]); + if (phi > phiArc || phi === phiArc && (arc[0] || arc[1])) { + winding += antimeridian ^ delta >= 0 ? 1 : -1; } } - - return winding; } + } - // Buffer geometry within a polygon and then clip it en masse. - function polygonStart() { - activeStream = bufferStream, segments = [], polygon = [], clean = true; - } + // First, determine whether the South pole is inside or outside: + // + // It is inside if: + // * the polygon winds around it in a clockwise direction. + // * the polygon does not (cumulatively) wind around it, but has a negative + // (counter-clockwise) area. + // + // Second, count the (signed) number of times a segment crosses a lambda + // from the point to the South pole. If it is zero, then the point is the + // same side as the South pole. - function polygonEnd() { - var startInside = polygonInside(), - cleanInside = clean && startInside, - visible = (segments = merge(segments)).length; - if (cleanInside || visible) { - stream.polygonStart(); - if (cleanInside) { - stream.lineStart(); - interpolate(null, null, 1, stream); - stream.lineEnd(); - } - if (visible) { - clipRejoin(segments, compareIntersection, startInside, interpolate, stream); + return (angle < -epsilon$1 || angle < epsilon$1 && sum < -epsilon2) ^ (winding & 1); +} + +function clip(pointVisible, clipLine, interpolate, start) { + return function(sink) { + var line = clipLine(sink), + ringBuffer = clipBuffer(), + ringSink = clipLine(ringBuffer), + polygonStarted = false, + polygon, + segments, + ring; + + var clip = { + point: point, + lineStart: lineStart, + lineEnd: lineEnd, + polygonStart: function() { + clip.point = pointRing; + clip.lineStart = ringStart; + clip.lineEnd = ringEnd; + segments = []; + polygon = []; + }, + polygonEnd: function() { + clip.point = point; + clip.lineStart = lineStart; + clip.lineEnd = lineEnd; + segments = merge(segments); + var startInside = polygonContains(polygon, start); + if (segments.length) { + if (!polygonStarted) sink.polygonStart(), polygonStarted = true; + clipRejoin(segments, compareIntersection, startInside, interpolate, sink); + } else if (startInside) { + if (!polygonStarted) sink.polygonStart(), polygonStarted = true; + sink.lineStart(); + interpolate(null, null, 1, sink); + sink.lineEnd(); } - stream.polygonEnd(); + if (polygonStarted) sink.polygonEnd(), polygonStarted = false; + segments = polygon = null; + }, + sphere: function() { + sink.polygonStart(); + sink.lineStart(); + interpolate(null, null, 1, sink); + sink.lineEnd(); + sink.polygonEnd(); } - activeStream = stream, segments = polygon = ring = null; + }; + + function point(lambda, phi) { + if (pointVisible(lambda, phi)) sink.point(lambda, phi); + } + + function pointLine(lambda, phi) { + line.point(lambda, phi); } function lineStart() { - clipStream.point = linePoint; - if (polygon) polygon.push(ring = []); - first = true; - v_ = false; - x_ = y_ = NaN; + clip.point = pointLine; + line.lineStart(); } - // TODO rather than special-case polygons, simply handle them separately. - // Ideally, coincident intersection points should be jittered to avoid - // clipping issues. function lineEnd() { - if (segments) { - linePoint(x__, y__); - if (v__ && v_) bufferStream.rejoin(); - segments.push(bufferStream.result()); - } - clipStream.point = point; - if (v_) activeStream.lineEnd(); + clip.point = point; + line.lineEnd(); } - function linePoint(x, y) { - var v = visible(x, y); - if (polygon) ring.push([x, y]); - if (first) { - x__ = x, y__ = y, v__ = v; - first = false; - if (v) { - activeStream.lineStart(); - activeStream.point(x, y); - } - } else { - if (v && v_) activeStream.point(x, y); - else { - var a = [x_ = Math.max(clipMin, Math.min(clipMax, x_)), y_ = Math.max(clipMin, Math.min(clipMax, y_))], - b = [x = Math.max(clipMin, Math.min(clipMax, x)), y = Math.max(clipMin, Math.min(clipMax, y))]; - if (clipLine(a, b, x0, y0, x1, y1)) { - if (!v_) { - activeStream.lineStart(); - activeStream.point(a[0], a[1]); - } - activeStream.point(b[0], b[1]); - if (!v) activeStream.lineEnd(); - clean = false; - } else if (v) { - activeStream.lineStart(); - activeStream.point(x, y); - clean = false; - } + function pointRing(lambda, phi) { + ring.push([lambda, phi]); + ringSink.point(lambda, phi); + } + + function ringStart() { + ringSink.lineStart(); + ring = []; + } + + function ringEnd() { + pointRing(ring[0][0], ring[0][1]); + ringSink.lineEnd(); + + var clean = ringSink.clean(), + ringSegments = ringBuffer.result(), + i, n = ringSegments.length, m, + segment, + point; + + ring.pop(); + polygon.push(ring); + ring = null; + + if (!n) return; + + // No intersections. + if (clean & 1) { + segment = ringSegments[0]; + if ((m = segment.length - 1) > 0) { + if (!polygonStarted) sink.polygonStart(), polygonStarted = true; + sink.lineStart(); + for (i = 0; i < m; ++i) sink.point((point = segment[i])[0], point[1]); + sink.lineEnd(); } + return; } - x_ = x, y_ = y, v_ = v; + + // Rejoin connected segments. + // TODO reuse ringBuffer.rejoin()? + if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift())); + + segments.push(ringSegments.filter(validSegment)); } - return clipStream; + return clip; }; } -function extent$1() { - var x0 = 0, - y0 = 0, - x1 = 960, - y1 = 500, - cache, - cacheStream, - clip; +function validSegment(segment) { + return segment.length > 1; +} - return clip = { - stream: function(stream) { - return cache && cacheStream === stream ? cache : cache = clipRectangle(x0, y0, x1, y1)(cacheStream = stream); - }, - extent: function(_) { - return arguments.length ? (x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1], cache = cacheStream = null, clip) : [[x0, y0], [x1, y1]]; - } - }; +// Intersections are sorted along the clip edge. For both antimeridian cutting +// and circle clipping, the same comparison is used. +function compareIntersection(a, b) { + return ((a = a.x)[0] < 0 ? a[1] - halfPi$1 - epsilon$1 : halfPi$1 - a[1]) + - ((b = b.x)[0] < 0 ? b[1] - halfPi$1 - epsilon$1 : halfPi$1 - b[1]); } -var lengthSum = adder(), - lambda0$2, - sinPhi0$1, - cosPhi0$1; +var clipAntimeridian = clip( + function() { return true; }, + clipAntimeridianLine, + clipAntimeridianInterpolate, + [-pi$1, -halfPi$1] +); -var lengthStream = { - sphere: noop$2, - point: noop$2, - lineStart: lengthLineStart, - lineEnd: noop$2, - polygonStart: noop$2, - polygonEnd: noop$2 -}; +// Takes a line and cuts into visible segments. Return values: 0 - there were +// intersections or the line was empty; 1 - no intersections; 2 - there were +// intersections, and the first and last segments should be rejoined. +function clipAntimeridianLine(stream) { + var lambda0 = NaN, + phi0 = NaN, + sign0 = NaN, + clean; // no intersections -function lengthLineStart() { - lengthStream.point = lengthPointFirst; - lengthStream.lineEnd = lengthLineEnd; + return { + lineStart: function() { + stream.lineStart(); + clean = 1; + }, + point: function(lambda1, phi1) { + var sign1 = lambda1 > 0 ? pi$1 : -pi$1, + delta = abs$1(lambda1 - lambda0); + if (abs$1(delta - pi$1) < epsilon$1) { // line crosses a pole + stream.point(lambda0, phi0 = (phi0 + phi1) / 2 > 0 ? halfPi$1 : -halfPi$1); + stream.point(sign0, phi0); + stream.lineEnd(); + stream.lineStart(); + stream.point(sign1, phi0); + stream.point(lambda1, phi0); + clean = 0; + } else if (sign0 !== sign1 && delta >= pi$1) { // line crosses antimeridian + if (abs$1(lambda0 - sign0) < epsilon$1) lambda0 -= sign0 * epsilon$1; // handle degeneracies + if (abs$1(lambda1 - sign1) < epsilon$1) lambda1 -= sign1 * epsilon$1; + phi0 = clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1); + stream.point(sign0, phi0); + stream.lineEnd(); + stream.lineStart(); + stream.point(sign1, phi0); + clean = 0; + } + stream.point(lambda0 = lambda1, phi0 = phi1); + sign0 = sign1; + }, + lineEnd: function() { + stream.lineEnd(); + lambda0 = phi0 = NaN; + }, + clean: function() { + return 2 - clean; // if intersections, rejoin first and last segments + } + }; } -function lengthLineEnd() { - lengthStream.point = lengthStream.lineEnd = noop$2; +function clipAntimeridianIntersect(lambda0, phi0, lambda1, phi1) { + var cosPhi0, + cosPhi1, + sinLambda0Lambda1 = sin$1(lambda0 - lambda1); + return abs$1(sinLambda0Lambda1) > epsilon$1 + ? atan((sin$1(phi0) * (cosPhi1 = cos$1(phi1)) * sin$1(lambda1) + - sin$1(phi1) * (cosPhi0 = cos$1(phi0)) * sin$1(lambda0)) + / (cosPhi0 * cosPhi1 * sinLambda0Lambda1)) + : (phi0 + phi1) / 2; } -function lengthPointFirst(lambda, phi) { - lambda *= radians, phi *= radians; - lambda0$2 = lambda, sinPhi0$1 = sin$1(phi), cosPhi0$1 = cos$1(phi); - lengthStream.point = lengthPoint; +function clipAntimeridianInterpolate(from, to, direction, stream) { + var phi; + if (from == null) { + phi = direction * halfPi$1; + stream.point(-pi$1, phi); + stream.point(0, phi); + stream.point(pi$1, phi); + stream.point(pi$1, 0); + stream.point(pi$1, -phi); + stream.point(0, -phi); + stream.point(-pi$1, -phi); + stream.point(-pi$1, 0); + stream.point(-pi$1, phi); + } else if (abs$1(from[0] - to[0]) > epsilon$1) { + var lambda = from[0] < to[0] ? pi$1 : -pi$1; + phi = direction * lambda / 2; + stream.point(-lambda, phi); + stream.point(0, phi); + stream.point(lambda, phi); + } else { + stream.point(to[0], to[1]); + } } -function lengthPoint(lambda, phi) { - lambda *= radians, phi *= radians; - var sinPhi = sin$1(phi), - cosPhi = cos$1(phi), - delta = abs(lambda - lambda0$2), - cosDelta = cos$1(delta), - sinDelta = sin$1(delta), - x = cosPhi * sinDelta, - y = cosPhi0$1 * sinPhi - sinPhi0$1 * cosPhi * cosDelta, - z = sinPhi0$1 * sinPhi + cosPhi0$1 * cosPhi * cosDelta; - lengthSum.add(atan2(sqrt(x * x + y * y), z)); - lambda0$2 = lambda, sinPhi0$1 = sinPhi, cosPhi0$1 = cosPhi; -} +function clipCircle(radius) { + var cr = cos$1(radius), + delta = 6 * radians, + smallRadius = cr > 0, + notHemisphere = abs$1(cr) > epsilon$1; // TODO optimise for this common case -function length$1(object) { - lengthSum.reset(); - geoStream(object, lengthStream); - return +lengthSum; -} - -var coordinates = [null, null], - object$1 = {type: "LineString", coordinates: coordinates}; - -function distance(a, b) { - coordinates[0] = a; - coordinates[1] = b; - return length$1(object$1); -} + function interpolate(from, to, direction, stream) { + circleStream(stream, radius, delta, direction, from, to); + } -var containsObjectType = { - Feature: function(object, point) { - return containsGeometry(object.geometry, point); - }, - FeatureCollection: function(object, point) { - var features = object.features, i = -1, n = features.length; - while (++i < n) if (containsGeometry(features[i].geometry, point)) return true; - return false; + function visible(lambda, phi) { + return cos$1(lambda) * cos$1(phi) > cr; } -}; -var containsGeometryType = { - Sphere: function() { - return true; - }, - Point: function(object, point) { - return containsPoint(object.coordinates, point); - }, - MultiPoint: function(object, point) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) if (containsPoint(coordinates[i], point)) return true; - return false; - }, - LineString: function(object, point) { - return containsLine(object.coordinates, point); - }, - MultiLineString: function(object, point) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) if (containsLine(coordinates[i], point)) return true; - return false; - }, - Polygon: function(object, point) { - return containsPolygon(object.coordinates, point); - }, - MultiPolygon: function(object, point) { - var coordinates = object.coordinates, i = -1, n = coordinates.length; - while (++i < n) if (containsPolygon(coordinates[i], point)) return true; - return false; - }, - GeometryCollection: function(object, point) { - var geometries = object.geometries, i = -1, n = geometries.length; - while (++i < n) if (containsGeometry(geometries[i], point)) return true; - return false; + // Takes a line and cuts into visible segments. Return values used for polygon + // clipping: 0 - there were intersections or the line was empty; 1 - no + // intersections 2 - there were intersections, and the first and last segments + // should be rejoined. + function clipLine(stream) { + var point0, // previous point + c0, // code for previous point + v0, // visibility of previous point + v00, // visibility of first point + clean; // no intersections + return { + lineStart: function() { + v00 = v0 = false; + clean = 1; + }, + point: function(lambda, phi) { + var point1 = [lambda, phi], + point2, + v = visible(lambda, phi), + c = smallRadius + ? v ? 0 : code(lambda, phi) + : v ? code(lambda + (lambda < 0 ? pi$1 : -pi$1), phi) : 0; + if (!point0 && (v00 = v0 = v)) stream.lineStart(); + if (v !== v0) { + point2 = intersect(point0, point1); + if (!point2 || pointEqual(point0, point2) || pointEqual(point1, point2)) + point1[2] = 1; + } + if (v !== v0) { + clean = 0; + if (v) { + // outside going in + stream.lineStart(); + point2 = intersect(point1, point0); + stream.point(point2[0], point2[1]); + } else { + // inside going out + point2 = intersect(point0, point1); + stream.point(point2[0], point2[1], 2); + stream.lineEnd(); + } + point0 = point2; + } else if (notHemisphere && point0 && smallRadius ^ v) { + var t; + // If the codes for two points are different, or are both zero, + // and there this segment intersects with the small circle. + if (!(c & c0) && (t = intersect(point1, point0, true))) { + clean = 0; + if (smallRadius) { + stream.lineStart(); + stream.point(t[0][0], t[0][1]); + stream.point(t[1][0], t[1][1]); + stream.lineEnd(); + } else { + stream.point(t[1][0], t[1][1]); + stream.lineEnd(); + stream.lineStart(); + stream.point(t[0][0], t[0][1], 3); + } + } + } + if (v && (!point0 || !pointEqual(point0, point1))) { + stream.point(point1[0], point1[1]); + } + point0 = point1, v0 = v, c0 = c; + }, + lineEnd: function() { + if (v0) stream.lineEnd(); + point0 = null; + }, + // Rejoin first and last segments if there were intersections and the first + // and last points were visible. + clean: function() { + return clean | ((v00 && v0) << 1); + } + }; } -}; -function containsGeometry(geometry, point) { - return geometry && containsGeometryType.hasOwnProperty(geometry.type) - ? containsGeometryType[geometry.type](geometry, point) - : false; -} + // Intersects the great circle between a and b with the clip circle. + function intersect(a, b, two) { + var pa = cartesian(a), + pb = cartesian(b); -function containsPoint(coordinates, point) { - return distance(coordinates, point) === 0; -} + // We have two planes, n1.p = d1 and n2.p = d2. + // Find intersection line p(t) = c1 n1 + c2 n2 + t (n1 ⨯ n2). + var n1 = [1, 0, 0], // normal + n2 = cartesianCross(pa, pb), + n2n2 = cartesianDot(n2, n2), + n1n2 = n2[0], // cartesianDot(n1, n2), + determinant = n2n2 - n1n2 * n1n2; -function containsLine(coordinates, point) { - var ao, bo, ab; - for (var i = 0, n = coordinates.length; i < n; i++) { - bo = distance(coordinates[i], point); - if (bo === 0) return true; - if (i > 0) { - ab = distance(coordinates[i], coordinates[i - 1]); - if ( - ab > 0 && - ao <= ab && - bo <= ab && - (ao + bo - ab) * (1 - Math.pow((ao - bo) / ab, 2)) < epsilon2$1 * ab - ) - return true; - } - ao = bo; - } - return false; -} + // Two polar points. + if (!determinant) return !two && a; -function containsPolygon(coordinates, point) { - return !!polygonContains(coordinates.map(ringRadians), pointRadians(point)); -} + var c1 = cr * n2n2 / determinant, + c2 = -cr * n1n2 / determinant, + n1xn2 = cartesianCross(n1, n2), + A = cartesianScale(n1, c1), + B = cartesianScale(n2, c2); + cartesianAddInPlace(A, B); -function ringRadians(ring) { - return ring = ring.map(pointRadians), ring.pop(), ring; -} + // Solve |p(t)|^2 = 1. + var u = n1xn2, + w = cartesianDot(A, u), + uu = cartesianDot(u, u), + t2 = w * w - uu * (cartesianDot(A, A) - 1); -function pointRadians(point) { - return [point[0] * radians, point[1] * radians]; -} + if (t2 < 0) return; -function contains$1(object, point) { - return (object && containsObjectType.hasOwnProperty(object.type) - ? containsObjectType[object.type] - : containsGeometry)(object, point); -} + var t = sqrt$2(t2), + q = cartesianScale(u, (-w - t) / uu); + cartesianAddInPlace(q, A); + q = spherical(q); -function graticuleX(y0, y1, dy) { - var y = sequence(y0, y1 - epsilon$2, dy).concat(y1); - return function(x) { return y.map(function(y) { return [x, y]; }); }; -} + if (!two) return q; -function graticuleY(x0, x1, dx) { - var x = sequence(x0, x1 - epsilon$2, dx).concat(x1); - return function(y) { return x.map(function(x) { return [x, y]; }); }; -} + // Two intersection points. + var lambda0 = a[0], + lambda1 = b[0], + phi0 = a[1], + phi1 = b[1], + z; -function graticule() { - var x1, x0, X1, X0, - y1, y0, Y1, Y0, - dx = 10, dy = dx, DX = 90, DY = 360, - x, y, X, Y, - precision = 2.5; + if (lambda1 < lambda0) z = lambda0, lambda0 = lambda1, lambda1 = z; - function graticule() { - return {type: "MultiLineString", coordinates: lines()}; + var delta = lambda1 - lambda0, + polar = abs$1(delta - pi$1) < epsilon$1, + meridian = polar || delta < epsilon$1; + + if (!polar && phi1 < phi0) z = phi0, phi0 = phi1, phi1 = z; + + // Check that the first point is between a and b. + if (meridian + ? polar + ? phi0 + phi1 > 0 ^ q[1] < (abs$1(q[0] - lambda0) < epsilon$1 ? phi0 : phi1) + : phi0 <= q[1] && q[1] <= phi1 + : delta > pi$1 ^ (lambda0 <= q[0] && q[0] <= lambda1)) { + var q1 = cartesianScale(u, (-w + t) / uu); + cartesianAddInPlace(q1, A); + return [q, spherical(q1)]; + } } - function lines() { - return sequence(ceil(X0 / DX) * DX, X1, DX).map(X) - .concat(sequence(ceil(Y0 / DY) * DY, Y1, DY).map(Y)) - .concat(sequence(ceil(x0 / dx) * dx, x1, dx).filter(function(x) { return abs(x % DX) > epsilon$2; }).map(x)) - .concat(sequence(ceil(y0 / dy) * dy, y1, dy).filter(function(y) { return abs(y % DY) > epsilon$2; }).map(y)); + // Generates a 4-bit vector representing the location of a point relative to + // the small circle's bounding box. + function code(lambda, phi) { + var r = smallRadius ? radius : pi$1 - radius, + code = 0; + if (lambda < -r) code |= 1; // left + else if (lambda > r) code |= 2; // right + if (phi < -r) code |= 4; // below + else if (phi > r) code |= 8; // above + return code; } - graticule.lines = function() { - return lines().map(function(coordinates) { return {type: "LineString", coordinates: coordinates}; }); - }; + return clip(visible, clipLine, interpolate, smallRadius ? [0, -radius] : [-pi$1, radius - pi$1]); +} - graticule.outline = function() { - return { - type: "Polygon", - coordinates: [ - X(X0).concat( - Y(Y1).slice(1), - X(X1).reverse().slice(1), - Y(Y0).reverse().slice(1)) - ] - }; - }; - - graticule.extent = function(_) { - if (!arguments.length) return graticule.extentMinor(); - return graticule.extentMajor(_).extentMinor(_); - }; - - graticule.extentMajor = function(_) { - if (!arguments.length) return [[X0, Y0], [X1, Y1]]; - X0 = +_[0][0], X1 = +_[1][0]; - Y0 = +_[0][1], Y1 = +_[1][1]; - if (X0 > X1) _ = X0, X0 = X1, X1 = _; - if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _; - return graticule.precision(precision); - }; - - graticule.extentMinor = function(_) { - if (!arguments.length) return [[x0, y0], [x1, y1]]; - x0 = +_[0][0], x1 = +_[1][0]; - y0 = +_[0][1], y1 = +_[1][1]; - if (x0 > x1) _ = x0, x0 = x1, x1 = _; - if (y0 > y1) _ = y0, y0 = y1, y1 = _; - return graticule.precision(precision); - }; - - graticule.step = function(_) { - if (!arguments.length) return graticule.stepMinor(); - return graticule.stepMajor(_).stepMinor(_); - }; +function clipLine(a, b, x0, y0, x1, y1) { + var ax = a[0], + ay = a[1], + bx = b[0], + by = b[1], + t0 = 0, + t1 = 1, + dx = bx - ax, + dy = by - ay, + r; - graticule.stepMajor = function(_) { - if (!arguments.length) return [DX, DY]; - DX = +_[0], DY = +_[1]; - return graticule; - }; + r = x0 - ax; + if (!dx && r > 0) return; + r /= dx; + if (dx < 0) { + if (r < t0) return; + if (r < t1) t1 = r; + } else if (dx > 0) { + if (r > t1) return; + if (r > t0) t0 = r; + } - graticule.stepMinor = function(_) { - if (!arguments.length) return [dx, dy]; - dx = +_[0], dy = +_[1]; - return graticule; - }; + r = x1 - ax; + if (!dx && r < 0) return; + r /= dx; + if (dx < 0) { + if (r > t1) return; + if (r > t0) t0 = r; + } else if (dx > 0) { + if (r < t0) return; + if (r < t1) t1 = r; + } - graticule.precision = function(_) { - if (!arguments.length) return precision; - precision = +_; - x = graticuleX(y0, y1, 90); - y = graticuleY(x0, x1, precision); - X = graticuleX(Y0, Y1, 90); - Y = graticuleY(X0, X1, precision); - return graticule; - }; + r = y0 - ay; + if (!dy && r > 0) return; + r /= dy; + if (dy < 0) { + if (r < t0) return; + if (r < t1) t1 = r; + } else if (dy > 0) { + if (r > t1) return; + if (r > t0) t0 = r; + } - return graticule - .extentMajor([[-180, -90 + epsilon$2], [180, 90 - epsilon$2]]) - .extentMinor([[-180, -80 - epsilon$2], [180, 80 + epsilon$2]]); -} + r = y1 - ay; + if (!dy && r < 0) return; + r /= dy; + if (dy < 0) { + if (r > t1) return; + if (r > t0) t0 = r; + } else if (dy > 0) { + if (r < t0) return; + if (r < t1) t1 = r; + } -function graticule10() { - return graticule()(); + if (t0 > 0) a[0] = ax + t0 * dx, a[1] = ay + t0 * dy; + if (t1 < 1) b[0] = ax + t1 * dx, b[1] = ay + t1 * dy; + return true; } -function interpolate$1(a, b) { - var x0 = a[0] * radians, - y0 = a[1] * radians, - x1 = b[0] * radians, - y1 = b[1] * radians, - cy0 = cos$1(y0), - sy0 = sin$1(y0), - cy1 = cos$1(y1), - sy1 = sin$1(y1), - kx0 = cy0 * cos$1(x0), - ky0 = cy0 * sin$1(x0), - kx1 = cy1 * cos$1(x1), - ky1 = cy1 * sin$1(x1), - d = 2 * asin(sqrt(haversin(y1 - y0) + cy0 * cy1 * haversin(x1 - x0))), - k = sin$1(d); - - var interpolate = d ? function(t) { - var B = sin$1(t *= d) / k, - A = sin$1(d - t) / k, - x = A * kx0 + B * kx1, - y = A * ky0 + B * ky1, - z = A * sy0 + B * sy1; - return [ - atan2(y, x) * degrees$1, - atan2(z, sqrt(x * x + y * y)) * degrees$1 - ]; - } : function() { - return [x0 * degrees$1, y0 * degrees$1]; - }; +var clipMax = 1e9, clipMin = -clipMax; - interpolate.distance = d; +// TODO Use d3-polygon’s polygonContains here for the ring check? +// TODO Eliminate duplicate buffering in clipBuffer and polygon.push? - return interpolate; -} +function clipRectangle(x0, y0, x1, y1) { -function identity$4(x) { - return x; -} + function visible(x, y) { + return x0 <= x && x <= x1 && y0 <= y && y <= y1; + } -var areaSum$1 = adder(), - areaRingSum$1 = adder(), - x00, - y00, - x0$1, - y0$1; + function interpolate(from, to, direction, stream) { + var a = 0, a1 = 0; + if (from == null + || (a = corner(from, direction)) !== (a1 = corner(to, direction)) + || comparePoint(from, to) < 0 ^ direction > 0) { + do stream.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0); + while ((a = (a + direction + 4) % 4) !== a1); + } else { + stream.point(to[0], to[1]); + } + } -var areaStream$1 = { - point: noop$2, - lineStart: noop$2, - lineEnd: noop$2, - polygonStart: function() { - areaStream$1.lineStart = areaRingStart$1; - areaStream$1.lineEnd = areaRingEnd$1; - }, - polygonEnd: function() { - areaStream$1.lineStart = areaStream$1.lineEnd = areaStream$1.point = noop$2; - areaSum$1.add(abs(areaRingSum$1)); - areaRingSum$1.reset(); - }, - result: function() { - var area = areaSum$1 / 2; - areaSum$1.reset(); - return area; + function corner(p, direction) { + return abs$1(p[0] - x0) < epsilon$1 ? direction > 0 ? 0 : 3 + : abs$1(p[0] - x1) < epsilon$1 ? direction > 0 ? 2 : 1 + : abs$1(p[1] - y0) < epsilon$1 ? direction > 0 ? 1 : 0 + : direction > 0 ? 3 : 2; // abs(p[1] - y1) < epsilon } -}; -function areaRingStart$1() { - areaStream$1.point = areaPointFirst$1; -} + function compareIntersection(a, b) { + return comparePoint(a.x, b.x); + } -function areaPointFirst$1(x, y) { - areaStream$1.point = areaPoint$1; - x00 = x0$1 = x, y00 = y0$1 = y; -} + function comparePoint(a, b) { + var ca = corner(a, 1), + cb = corner(b, 1); + return ca !== cb ? ca - cb + : ca === 0 ? b[1] - a[1] + : ca === 1 ? a[0] - b[0] + : ca === 2 ? a[1] - b[1] + : b[0] - a[0]; + } -function areaPoint$1(x, y) { - areaRingSum$1.add(y0$1 * x - x0$1 * y); - x0$1 = x, y0$1 = y; -} + return function(stream) { + var activeStream = stream, + bufferStream = clipBuffer(), + segments, + polygon, + ring, + x__, y__, v__, // first point + x_, y_, v_, // previous point + first, + clean; -function areaRingEnd$1() { - areaPoint$1(x00, y00); -} + var clipStream = { + point: point, + lineStart: lineStart, + lineEnd: lineEnd, + polygonStart: polygonStart, + polygonEnd: polygonEnd + }; -var x0$2 = Infinity, - y0$2 = x0$2, - x1 = -x0$2, - y1 = x1; + function point(x, y) { + if (visible(x, y)) activeStream.point(x, y); + } -var boundsStream$1 = { - point: boundsPoint$1, - lineStart: noop$2, - lineEnd: noop$2, - polygonStart: noop$2, - polygonEnd: noop$2, - result: function() { - var bounds = [[x0$2, y0$2], [x1, y1]]; - x1 = y1 = -(y0$2 = x0$2 = Infinity); - return bounds; - } -}; + function polygonInside() { + var winding = 0; -function boundsPoint$1(x, y) { - if (x < x0$2) x0$2 = x; - if (x > x1) x1 = x; - if (y < y0$2) y0$2 = y; - if (y > y1) y1 = y; -} + for (var i = 0, n = polygon.length; i < n; ++i) { + for (var ring = polygon[i], j = 1, m = ring.length, point = ring[0], a0, a1, b0 = point[0], b1 = point[1]; j < m; ++j) { + a0 = b0, a1 = b1, point = ring[j], b0 = point[0], b1 = point[1]; + if (a1 <= y1) { if (b1 > y1 && (b0 - a0) * (y1 - a1) > (b1 - a1) * (x0 - a0)) ++winding; } + else { if (b1 <= y1 && (b0 - a0) * (y1 - a1) < (b1 - a1) * (x0 - a0)) --winding; } + } + } -// TODO Enforce positive area for exterior, negative area for interior? + return winding; + } -var X0$1 = 0, - Y0$1 = 0, - Z0$1 = 0, - X1$1 = 0, - Y1$1 = 0, - Z1$1 = 0, - X2$1 = 0, - Y2$1 = 0, - Z2$1 = 0, - x00$1, - y00$1, - x0$3, - y0$3; + // Buffer geometry within a polygon and then clip it en masse. + function polygonStart() { + activeStream = bufferStream, segments = [], polygon = [], clean = true; + } -var centroidStream$1 = { - point: centroidPoint$1, - lineStart: centroidLineStart$1, - lineEnd: centroidLineEnd$1, - polygonStart: function() { - centroidStream$1.lineStart = centroidRingStart$1; - centroidStream$1.lineEnd = centroidRingEnd$1; - }, - polygonEnd: function() { - centroidStream$1.point = centroidPoint$1; - centroidStream$1.lineStart = centroidLineStart$1; - centroidStream$1.lineEnd = centroidLineEnd$1; - }, - result: function() { - var centroid = Z2$1 ? [X2$1 / Z2$1, Y2$1 / Z2$1] - : Z1$1 ? [X1$1 / Z1$1, Y1$1 / Z1$1] - : Z0$1 ? [X0$1 / Z0$1, Y0$1 / Z0$1] - : [NaN, NaN]; - X0$1 = Y0$1 = Z0$1 = - X1$1 = Y1$1 = Z1$1 = - X2$1 = Y2$1 = Z2$1 = 0; - return centroid; - } -}; + function polygonEnd() { + var startInside = polygonInside(), + cleanInside = clean && startInside, + visible = (segments = merge(segments)).length; + if (cleanInside || visible) { + stream.polygonStart(); + if (cleanInside) { + stream.lineStart(); + interpolate(null, null, 1, stream); + stream.lineEnd(); + } + if (visible) { + clipRejoin(segments, compareIntersection, startInside, interpolate, stream); + } + stream.polygonEnd(); + } + activeStream = stream, segments = polygon = ring = null; + } -function centroidPoint$1(x, y) { - X0$1 += x; - Y0$1 += y; - ++Z0$1; -} + function lineStart() { + clipStream.point = linePoint; + if (polygon) polygon.push(ring = []); + first = true; + v_ = false; + x_ = y_ = NaN; + } -function centroidLineStart$1() { - centroidStream$1.point = centroidPointFirstLine; -} + // TODO rather than special-case polygons, simply handle them separately. + // Ideally, coincident intersection points should be jittered to avoid + // clipping issues. + function lineEnd() { + if (segments) { + linePoint(x__, y__); + if (v__ && v_) bufferStream.rejoin(); + segments.push(bufferStream.result()); + } + clipStream.point = point; + if (v_) activeStream.lineEnd(); + } -function centroidPointFirstLine(x, y) { - centroidStream$1.point = centroidPointLine; - centroidPoint$1(x0$3 = x, y0$3 = y); + function linePoint(x, y) { + var v = visible(x, y); + if (polygon) ring.push([x, y]); + if (first) { + x__ = x, y__ = y, v__ = v; + first = false; + if (v) { + activeStream.lineStart(); + activeStream.point(x, y); + } + } else { + if (v && v_) activeStream.point(x, y); + else { + var a = [x_ = Math.max(clipMin, Math.min(clipMax, x_)), y_ = Math.max(clipMin, Math.min(clipMax, y_))], + b = [x = Math.max(clipMin, Math.min(clipMax, x)), y = Math.max(clipMin, Math.min(clipMax, y))]; + if (clipLine(a, b, x0, y0, x1, y1)) { + if (!v_) { + activeStream.lineStart(); + activeStream.point(a[0], a[1]); + } + activeStream.point(b[0], b[1]); + if (!v) activeStream.lineEnd(); + clean = false; + } else if (v) { + activeStream.lineStart(); + activeStream.point(x, y); + clean = false; + } + } + } + x_ = x, y_ = y, v_ = v; + } + + return clipStream; + }; } -function centroidPointLine(x, y) { - var dx = x - x0$3, dy = y - y0$3, z = sqrt(dx * dx + dy * dy); - X1$1 += z * (x0$3 + x) / 2; - Y1$1 += z * (y0$3 + y) / 2; - Z1$1 += z; - centroidPoint$1(x0$3 = x, y0$3 = y); +function extent() { + var x0 = 0, + y0 = 0, + x1 = 960, + y1 = 500, + cache, + cacheStream, + clip; + + return clip = { + stream: function(stream) { + return cache && cacheStream === stream ? cache : cache = clipRectangle(x0, y0, x1, y1)(cacheStream = stream); + }, + extent: function(_) { + return arguments.length ? (x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1], cache = cacheStream = null, clip) : [[x0, y0], [x1, y1]]; + } + }; } -function centroidLineEnd$1() { - centroidStream$1.point = centroidPoint$1; +var lengthSum$1, + lambda0, + sinPhi0, + cosPhi0; + +var lengthStream$1 = { + sphere: noop$1, + point: noop$1, + lineStart: lengthLineStart, + lineEnd: noop$1, + polygonStart: noop$1, + polygonEnd: noop$1 +}; + +function lengthLineStart() { + lengthStream$1.point = lengthPointFirst$1; + lengthStream$1.lineEnd = lengthLineEnd; } -function centroidRingStart$1() { - centroidStream$1.point = centroidPointFirstRing; +function lengthLineEnd() { + lengthStream$1.point = lengthStream$1.lineEnd = noop$1; } -function centroidRingEnd$1() { - centroidPointRing(x00$1, y00$1); +function lengthPointFirst$1(lambda, phi) { + lambda *= radians, phi *= radians; + lambda0 = lambda, sinPhi0 = sin$1(phi), cosPhi0 = cos$1(phi); + lengthStream$1.point = lengthPoint$1; } -function centroidPointFirstRing(x, y) { - centroidStream$1.point = centroidPointRing; - centroidPoint$1(x00$1 = x0$3 = x, y00$1 = y0$3 = y); +function lengthPoint$1(lambda, phi) { + lambda *= radians, phi *= radians; + var sinPhi = sin$1(phi), + cosPhi = cos$1(phi), + delta = abs$1(lambda - lambda0), + cosDelta = cos$1(delta), + sinDelta = sin$1(delta), + x = cosPhi * sinDelta, + y = cosPhi0 * sinPhi - sinPhi0 * cosPhi * cosDelta, + z = sinPhi0 * sinPhi + cosPhi0 * cosPhi * cosDelta; + lengthSum$1.add(atan2$1(sqrt$2(x * x + y * y), z)); + lambda0 = lambda, sinPhi0 = sinPhi, cosPhi0 = cosPhi; } -function centroidPointRing(x, y) { - var dx = x - x0$3, - dy = y - y0$3, - z = sqrt(dx * dx + dy * dy); +function length$1(object) { + lengthSum$1 = new Adder(); + geoStream(object, lengthStream$1); + return +lengthSum$1; +} - X1$1 += z * (x0$3 + x) / 2; - Y1$1 += z * (y0$3 + y) / 2; - Z1$1 += z; +var coordinates = [null, null], + object = {type: "LineString", coordinates: coordinates}; - z = y0$3 * x - x0$3 * y; - X2$1 += z * (x0$3 + x); - Y2$1 += z * (y0$3 + y); - Z2$1 += z * 3; - centroidPoint$1(x0$3 = x, y0$3 = y); +function distance(a, b) { + coordinates[0] = a; + coordinates[1] = b; + return length$1(object); } -function PathContext(context) { - this._context = context; -} +var containsObjectType = { + Feature: function(object, point) { + return containsGeometry(object.geometry, point); + }, + FeatureCollection: function(object, point) { + var features = object.features, i = -1, n = features.length; + while (++i < n) if (containsGeometry(features[i].geometry, point)) return true; + return false; + } +}; -PathContext.prototype = { - _radius: 4.5, - pointRadius: function(_) { - return this._radius = _, this; +var containsGeometryType = { + Sphere: function() { + return true; }, - polygonStart: function() { - this._line = 0; + Point: function(object, point) { + return containsPoint(object.coordinates, point); }, - polygonEnd: function() { - this._line = NaN; + MultiPoint: function(object, point) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) if (containsPoint(coordinates[i], point)) return true; + return false; }, - lineStart: function() { - this._point = 0; + LineString: function(object, point) { + return containsLine(object.coordinates, point); }, - lineEnd: function() { - if (this._line === 0) this._context.closePath(); - this._point = NaN; + MultiLineString: function(object, point) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) if (containsLine(coordinates[i], point)) return true; + return false; }, - point: function(x, y) { - switch (this._point) { - case 0: { - this._context.moveTo(x, y); - this._point = 1; - break; - } - case 1: { - this._context.lineTo(x, y); - break; - } - default: { - this._context.moveTo(x + this._radius, y); - this._context.arc(x, y, this._radius, 0, tau$3); - break; - } - } + Polygon: function(object, point) { + return containsPolygon(object.coordinates, point); + }, + MultiPolygon: function(object, point) { + var coordinates = object.coordinates, i = -1, n = coordinates.length; + while (++i < n) if (containsPolygon(coordinates[i], point)) return true; + return false; }, - result: noop$2 + GeometryCollection: function(object, point) { + var geometries = object.geometries, i = -1, n = geometries.length; + while (++i < n) if (containsGeometry(geometries[i], point)) return true; + return false; + } }; -var lengthSum$1 = adder(), - lengthRing, - x00$2, - y00$2, - x0$4, - y0$4; +function containsGeometry(geometry, point) { + return geometry && containsGeometryType.hasOwnProperty(geometry.type) + ? containsGeometryType[geometry.type](geometry, point) + : false; +} -var lengthStream$1 = { - point: noop$2, - lineStart: function() { - lengthStream$1.point = lengthPointFirst$1; - }, - lineEnd: function() { - if (lengthRing) lengthPoint$1(x00$2, y00$2); - lengthStream$1.point = noop$2; - }, - polygonStart: function() { - lengthRing = true; - }, - polygonEnd: function() { - lengthRing = null; - }, - result: function() { - var length = +lengthSum$1; - lengthSum$1.reset(); - return length; +function containsPoint(coordinates, point) { + return distance(coordinates, point) === 0; +} + +function containsLine(coordinates, point) { + var ao, bo, ab; + for (var i = 0, n = coordinates.length; i < n; i++) { + bo = distance(coordinates[i], point); + if (bo === 0) return true; + if (i > 0) { + ab = distance(coordinates[i], coordinates[i - 1]); + if ( + ab > 0 && + ao <= ab && + bo <= ab && + (ao + bo - ab) * (1 - Math.pow((ao - bo) / ab, 2)) < epsilon2 * ab + ) + return true; + } + ao = bo; } -}; + return false; +} -function lengthPointFirst$1(x, y) { - lengthStream$1.point = lengthPoint$1; - x00$2 = x0$4 = x, y00$2 = y0$4 = y; +function containsPolygon(coordinates, point) { + return !!polygonContains(coordinates.map(ringRadians), pointRadians(point)); } -function lengthPoint$1(x, y) { - x0$4 -= x, y0$4 -= y; - lengthSum$1.add(sqrt(x0$4 * x0$4 + y0$4 * y0$4)); - x0$4 = x, y0$4 = y; +function ringRadians(ring) { + return ring = ring.map(pointRadians), ring.pop(), ring; } -function PathString() { - this._string = []; +function pointRadians(point) { + return [point[0] * radians, point[1] * radians]; } -PathString.prototype = { - _radius: 4.5, - _circle: circle$1(4.5), - pointRadius: function(_) { - if ((_ = +_) !== this._radius) this._radius = _, this._circle = null; - return this; - }, - polygonStart: function() { - this._line = 0; - }, - polygonEnd: function() { - this._line = NaN; - }, - lineStart: function() { - this._point = 0; - }, - lineEnd: function() { - if (this._line === 0) this._string.push("Z"); - this._point = NaN; - }, - point: function(x, y) { - switch (this._point) { - case 0: { - this._string.push("M", x, ",", y); - this._point = 1; - break; - } - case 1: { - this._string.push("L", x, ",", y); - break; - } - default: { - if (this._circle == null) this._circle = circle$1(this._radius); - this._string.push("M", x, ",", y, this._circle); - break; - } - } - }, - result: function() { - if (this._string.length) { - var result = this._string.join(""); - this._string = []; - return result; - } else { - return null; - } - } -}; +function contains$1(object, point) { + return (object && containsObjectType.hasOwnProperty(object.type) + ? containsObjectType[object.type] + : containsGeometry)(object, point); +} -function circle$1(radius) { - return "m0," + radius - + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius - + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius - + "z"; +function graticuleX(y0, y1, dy) { + var y = sequence(y0, y1 - epsilon$1, dy).concat(y1); + return function(x) { return y.map(function(y) { return [x, y]; }); }; } -function index$1(projection, context) { - var pointRadius = 4.5, - projectionStream, - contextStream; +function graticuleY(x0, x1, dx) { + var x = sequence(x0, x1 - epsilon$1, dx).concat(x1); + return function(y) { return x.map(function(x) { return [x, y]; }); }; +} - function path(object) { - if (object) { - if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments)); - geoStream(object, projectionStream(contextStream)); - } - return contextStream.result(); +function graticule() { + var x1, x0, X1, X0, + y1, y0, Y1, Y0, + dx = 10, dy = dx, DX = 90, DY = 360, + x, y, X, Y, + precision = 2.5; + + function graticule() { + return {type: "MultiLineString", coordinates: lines()}; } - path.area = function(object) { - geoStream(object, projectionStream(areaStream$1)); - return areaStream$1.result(); + function lines() { + return sequence(ceil(X0 / DX) * DX, X1, DX).map(X) + .concat(sequence(ceil(Y0 / DY) * DY, Y1, DY).map(Y)) + .concat(sequence(ceil(x0 / dx) * dx, x1, dx).filter(function(x) { return abs$1(x % DX) > epsilon$1; }).map(x)) + .concat(sequence(ceil(y0 / dy) * dy, y1, dy).filter(function(y) { return abs$1(y % DY) > epsilon$1; }).map(y)); + } + + graticule.lines = function() { + return lines().map(function(coordinates) { return {type: "LineString", coordinates: coordinates}; }); }; - path.measure = function(object) { - geoStream(object, projectionStream(lengthStream$1)); - return lengthStream$1.result(); + graticule.outline = function() { + return { + type: "Polygon", + coordinates: [ + X(X0).concat( + Y(Y1).slice(1), + X(X1).reverse().slice(1), + Y(Y0).reverse().slice(1)) + ] + }; }; - path.bounds = function(object) { - geoStream(object, projectionStream(boundsStream$1)); - return boundsStream$1.result(); + graticule.extent = function(_) { + if (!arguments.length) return graticule.extentMinor(); + return graticule.extentMajor(_).extentMinor(_); }; - path.centroid = function(object) { - geoStream(object, projectionStream(centroidStream$1)); - return centroidStream$1.result(); + graticule.extentMajor = function(_) { + if (!arguments.length) return [[X0, Y0], [X1, Y1]]; + X0 = +_[0][0], X1 = +_[1][0]; + Y0 = +_[0][1], Y1 = +_[1][1]; + if (X0 > X1) _ = X0, X0 = X1, X1 = _; + if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _; + return graticule.precision(precision); }; - path.projection = function(_) { - return arguments.length ? (projectionStream = _ == null ? (projection = null, identity$4) : (projection = _).stream, path) : projection; + graticule.extentMinor = function(_) { + if (!arguments.length) return [[x0, y0], [x1, y1]]; + x0 = +_[0][0], x1 = +_[1][0]; + y0 = +_[0][1], y1 = +_[1][1]; + if (x0 > x1) _ = x0, x0 = x1, x1 = _; + if (y0 > y1) _ = y0, y0 = y1, y1 = _; + return graticule.precision(precision); }; - path.context = function(_) { - if (!arguments.length) return context; - contextStream = _ == null ? (context = null, new PathString) : new PathContext(context = _); - if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius); - return path; + graticule.step = function(_) { + if (!arguments.length) return graticule.stepMinor(); + return graticule.stepMajor(_).stepMinor(_); }; - path.pointRadius = function(_) { - if (!arguments.length) return pointRadius; - pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_); - return path; + graticule.stepMajor = function(_) { + if (!arguments.length) return [DX, DY]; + DX = +_[0], DY = +_[1]; + return graticule; }; - return path.projection(projection).context(context); -} + graticule.stepMinor = function(_) { + if (!arguments.length) return [dx, dy]; + dx = +_[0], dy = +_[1]; + return graticule; + }; -function transform(methods) { - return { - stream: transformer(methods) + graticule.precision = function(_) { + if (!arguments.length) return precision; + precision = +_; + x = graticuleX(y0, y1, 90); + y = graticuleY(x0, x1, precision); + X = graticuleX(Y0, Y1, 90); + Y = graticuleY(X0, X1, precision); + return graticule; }; + + return graticule + .extentMajor([[-180, -90 + epsilon$1], [180, 90 - epsilon$1]]) + .extentMinor([[-180, -80 - epsilon$1], [180, 80 + epsilon$1]]); } -function transformer(methods) { - return function(stream) { - var s = new TransformStream; - for (var key in methods) s[key] = methods[key]; - s.stream = stream; - return s; - }; +function graticule10() { + return graticule()(); } -function TransformStream() {} +function interpolate(a, b) { + var x0 = a[0] * radians, + y0 = a[1] * radians, + x1 = b[0] * radians, + y1 = b[1] * radians, + cy0 = cos$1(y0), + sy0 = sin$1(y0), + cy1 = cos$1(y1), + sy1 = sin$1(y1), + kx0 = cy0 * cos$1(x0), + ky0 = cy0 * sin$1(x0), + kx1 = cy1 * cos$1(x1), + ky1 = cy1 * sin$1(x1), + d = 2 * asin$1(sqrt$2(haversin(y1 - y0) + cy0 * cy1 * haversin(x1 - x0))), + k = sin$1(d); -TransformStream.prototype = { - constructor: TransformStream, - point: function(x, y) { this.stream.point(x, y); }, - sphere: function() { this.stream.sphere(); }, - lineStart: function() { this.stream.lineStart(); }, - lineEnd: function() { this.stream.lineEnd(); }, - polygonStart: function() { this.stream.polygonStart(); }, - polygonEnd: function() { this.stream.polygonEnd(); } -}; + var interpolate = d ? function(t) { + var B = sin$1(t *= d) / k, + A = sin$1(d - t) / k, + x = A * kx0 + B * kx1, + y = A * ky0 + B * ky1, + z = A * sy0 + B * sy1; + return [ + atan2$1(y, x) * degrees, + atan2$1(z, sqrt$2(x * x + y * y)) * degrees + ]; + } : function() { + return [x0 * degrees, y0 * degrees]; + }; -function fit(projection, fitBounds, object) { - var clip = projection.clipExtent && projection.clipExtent(); - projection.scale(150).translate([0, 0]); - if (clip != null) projection.clipExtent(null); - geoStream(object, projection.stream(boundsStream$1)); - fitBounds(boundsStream$1.result()); - if (clip != null) projection.clipExtent(clip); - return projection; -} + interpolate.distance = d; -function fitExtent(projection, extent, object) { - return fit(projection, function(b) { - var w = extent[1][0] - extent[0][0], - h = extent[1][1] - extent[0][1], - k = Math.min(w / (b[1][0] - b[0][0]), h / (b[1][1] - b[0][1])), - x = +extent[0][0] + (w - k * (b[1][0] + b[0][0])) / 2, - y = +extent[0][1] + (h - k * (b[1][1] + b[0][1])) / 2; - projection.scale(150 * k).translate([x, y]); - }, object); + return interpolate; } -function fitSize(projection, size, object) { - return fitExtent(projection, [[0, 0], size], object); -} +var identity$5 = x => x; -function fitWidth(projection, width, object) { - return fit(projection, function(b) { - var w = +width, - k = w / (b[1][0] - b[0][0]), - x = (w - k * (b[1][0] + b[0][0])) / 2, - y = -k * b[0][1]; - projection.scale(150 * k).translate([x, y]); - }, object); +var areaSum = new Adder(), + areaRingSum = new Adder(), + x00$2, + y00$2, + x0$3, + y0$3; + +var areaStream = { + point: noop$1, + lineStart: noop$1, + lineEnd: noop$1, + polygonStart: function() { + areaStream.lineStart = areaRingStart; + areaStream.lineEnd = areaRingEnd; + }, + polygonEnd: function() { + areaStream.lineStart = areaStream.lineEnd = areaStream.point = noop$1; + areaSum.add(abs$1(areaRingSum)); + areaRingSum = new Adder(); + }, + result: function() { + var area = areaSum / 2; + areaSum = new Adder(); + return area; + } +}; + +function areaRingStart() { + areaStream.point = areaPointFirst; } -function fitHeight(projection, height, object) { - return fit(projection, function(b) { - var h = +height, - k = h / (b[1][1] - b[0][1]), - x = -k * b[0][0], - y = (h - k * (b[1][1] + b[0][1])) / 2; - projection.scale(150 * k).translate([x, y]); - }, object); +function areaPointFirst(x, y) { + areaStream.point = areaPoint; + x00$2 = x0$3 = x, y00$2 = y0$3 = y; } -var maxDepth = 16, // maximum depth of subdivision - cosMinDistance = cos$1(30 * radians); // cos(minimum angular distance) +function areaPoint(x, y) { + areaRingSum.add(y0$3 * x - x0$3 * y); + x0$3 = x, y0$3 = y; +} -function resample(project, delta2) { - return +delta2 ? resample$1(project, delta2) : resampleNone(project); +function areaRingEnd() { + areaPoint(x00$2, y00$2); } -function resampleNone(project) { - return transformer({ - point: function(x, y) { - x = project(x, y); - this.stream.point(x[0], x[1]); - } - }); -} - -function resample$1(project, delta2) { +var x0$2 = Infinity, + y0$2 = x0$2, + x1 = -x0$2, + y1 = x1; - function resampleLineTo(x0, y0, lambda0, a0, b0, c0, x1, y1, lambda1, a1, b1, c1, depth, stream) { - var dx = x1 - x0, - dy = y1 - y0, - d2 = dx * dx + dy * dy; - if (d2 > 4 * delta2 && depth--) { - var a = a0 + a1, - b = b0 + b1, - c = c0 + c1, - m = sqrt(a * a + b * b + c * c), - phi2 = asin(c /= m), - lambda2 = abs(abs(c) - 1) < epsilon$2 || abs(lambda0 - lambda1) < epsilon$2 ? (lambda0 + lambda1) / 2 : atan2(b, a), - p = project(lambda2, phi2), - x2 = p[0], - y2 = p[1], - dx2 = x2 - x0, - dy2 = y2 - y0, - dz = dy * dx2 - dx * dy2; - if (dz * dz / d2 > delta2 // perpendicular projected distance - || abs((dx * dx2 + dy * dy2) / d2 - 0.5) > 0.3 // midpoint close to an end - || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) { // angular distance - resampleLineTo(x0, y0, lambda0, a0, b0, c0, x2, y2, lambda2, a /= m, b /= m, c, depth, stream); - stream.point(x2, y2); - resampleLineTo(x2, y2, lambda2, a, b, c, x1, y1, lambda1, a1, b1, c1, depth, stream); - } - } +var boundsStream = { + point: boundsPoint, + lineStart: noop$1, + lineEnd: noop$1, + polygonStart: noop$1, + polygonEnd: noop$1, + result: function() { + var bounds = [[x0$2, y0$2], [x1, y1]]; + x1 = y1 = -(y0$2 = x0$2 = Infinity); + return bounds; } - return function(stream) { - var lambda00, x00, y00, a00, b00, c00, // first point - lambda0, x0, y0, a0, b0, c0; // previous point +}; - var resampleStream = { - point: point, - lineStart: lineStart, - lineEnd: lineEnd, - polygonStart: function() { stream.polygonStart(); resampleStream.lineStart = ringStart; }, - polygonEnd: function() { stream.polygonEnd(); resampleStream.lineStart = lineStart; } - }; +function boundsPoint(x, y) { + if (x < x0$2) x0$2 = x; + if (x > x1) x1 = x; + if (y < y0$2) y0$2 = y; + if (y > y1) y1 = y; +} - function point(x, y) { - x = project(x, y); - stream.point(x[0], x[1]); - } +// TODO Enforce positive area for exterior, negative area for interior? - function lineStart() { - x0 = NaN; - resampleStream.point = linePoint; - stream.lineStart(); - } +var X0 = 0, + Y0 = 0, + Z0 = 0, + X1 = 0, + Y1 = 0, + Z1 = 0, + X2 = 0, + Y2 = 0, + Z2 = 0, + x00$1, + y00$1, + x0$1, + y0$1; - function linePoint(lambda, phi) { - var c = cartesian([lambda, phi]), p = project(lambda, phi); - resampleLineTo(x0, y0, lambda0, a0, b0, c0, x0 = p[0], y0 = p[1], lambda0 = lambda, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream); - stream.point(x0, y0); - } +var centroidStream = { + point: centroidPoint, + lineStart: centroidLineStart, + lineEnd: centroidLineEnd, + polygonStart: function() { + centroidStream.lineStart = centroidRingStart; + centroidStream.lineEnd = centroidRingEnd; + }, + polygonEnd: function() { + centroidStream.point = centroidPoint; + centroidStream.lineStart = centroidLineStart; + centroidStream.lineEnd = centroidLineEnd; + }, + result: function() { + var centroid = Z2 ? [X2 / Z2, Y2 / Z2] + : Z1 ? [X1 / Z1, Y1 / Z1] + : Z0 ? [X0 / Z0, Y0 / Z0] + : [NaN, NaN]; + X0 = Y0 = Z0 = + X1 = Y1 = Z1 = + X2 = Y2 = Z2 = 0; + return centroid; + } +}; - function lineEnd() { - resampleStream.point = point; - stream.lineEnd(); - } +function centroidPoint(x, y) { + X0 += x; + Y0 += y; + ++Z0; +} - function ringStart() { - lineStart(); - resampleStream.point = ringPoint; - resampleStream.lineEnd = ringEnd; - } +function centroidLineStart() { + centroidStream.point = centroidPointFirstLine; +} - function ringPoint(lambda, phi) { - linePoint(lambda00 = lambda, phi), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0; - resampleStream.point = linePoint; - } +function centroidPointFirstLine(x, y) { + centroidStream.point = centroidPointLine; + centroidPoint(x0$1 = x, y0$1 = y); +} - function ringEnd() { - resampleLineTo(x0, y0, lambda0, a0, b0, c0, x00, y00, lambda00, a00, b00, c00, maxDepth, stream); - resampleStream.lineEnd = lineEnd; - lineEnd(); - } +function centroidPointLine(x, y) { + var dx = x - x0$1, dy = y - y0$1, z = sqrt$2(dx * dx + dy * dy); + X1 += z * (x0$1 + x) / 2; + Y1 += z * (y0$1 + y) / 2; + Z1 += z; + centroidPoint(x0$1 = x, y0$1 = y); +} - return resampleStream; - }; +function centroidLineEnd() { + centroidStream.point = centroidPoint; } -var transformRadians = transformer({ - point: function(x, y) { - this.stream.point(x * radians, y * radians); - } -}); +function centroidRingStart() { + centroidStream.point = centroidPointFirstRing; +} -function transformRotate(rotate) { - return transformer({ - point: function(x, y) { - var r = rotate(x, y); - return this.stream.point(r[0], r[1]); - } - }); +function centroidRingEnd() { + centroidPointRing(x00$1, y00$1); } -function scaleTranslate(k, dx, dy, sx, sy) { - function transform(x, y) { - x *= sx; y *= sy; - return [dx + k * x, dy - k * y]; - } - transform.invert = function(x, y) { - return [(x - dx) / k * sx, (dy - y) / k * sy]; - }; - return transform; +function centroidPointFirstRing(x, y) { + centroidStream.point = centroidPointRing; + centroidPoint(x00$1 = x0$1 = x, y00$1 = y0$1 = y); } -function scaleTranslateRotate(k, dx, dy, sx, sy, alpha) { - var cosAlpha = cos$1(alpha), - sinAlpha = sin$1(alpha), - a = cosAlpha * k, - b = sinAlpha * k, - ai = cosAlpha / k, - bi = sinAlpha / k, - ci = (sinAlpha * dy - cosAlpha * dx) / k, - fi = (sinAlpha * dx + cosAlpha * dy) / k; - function transform(x, y) { - x *= sx; y *= sy; - return [a * x - b * y + dx, dy - b * x - a * y]; - } - transform.invert = function(x, y) { - return [sx * (ai * x - bi * y + ci), sy * (fi - bi * x - ai * y)]; - }; - return transform; +function centroidPointRing(x, y) { + var dx = x - x0$1, + dy = y - y0$1, + z = sqrt$2(dx * dx + dy * dy); + + X1 += z * (x0$1 + x) / 2; + Y1 += z * (y0$1 + y) / 2; + Z1 += z; + + z = y0$1 * x - x0$1 * y; + X2 += z * (x0$1 + x); + Y2 += z * (y0$1 + y); + Z2 += z * 3; + centroidPoint(x0$1 = x, y0$1 = y); } -function projection(project) { - return projectionMutator(function() { return project; })(); +function PathContext(context) { + this._context = context; } -function projectionMutator(projectAt) { - var project, - k = 150, // scale - x = 480, y = 250, // translate - lambda = 0, phi = 0, // center - deltaLambda = 0, deltaPhi = 0, deltaGamma = 0, rotate, // pre-rotate - alpha = 0, // post-rotate angle - sx = 1, // reflectX - sy = 1, // reflectX - theta = null, preclip = clipAntimeridian, // pre-clip angle - x0 = null, y0, x1, y1, postclip = identity$4, // post-clip extent - delta2 = 0.5, // precision - projectResample, - projectTransform, - projectRotateTransform, - cache, - cacheStream; +PathContext.prototype = { + _radius: 4.5, + pointRadius: function(_) { + return this._radius = _, this; + }, + polygonStart: function() { + this._line = 0; + }, + polygonEnd: function() { + this._line = NaN; + }, + lineStart: function() { + this._point = 0; + }, + lineEnd: function() { + if (this._line === 0) this._context.closePath(); + this._point = NaN; + }, + point: function(x, y) { + switch (this._point) { + case 0: { + this._context.moveTo(x, y); + this._point = 1; + break; + } + case 1: { + this._context.lineTo(x, y); + break; + } + default: { + this._context.moveTo(x + this._radius, y); + this._context.arc(x, y, this._radius, 0, tau$1); + break; + } + } + }, + result: noop$1 +}; - function projection(point) { - return projectRotateTransform(point[0] * radians, point[1] * radians); - } +var lengthSum = new Adder(), + lengthRing, + x00, + y00, + x0, + y0; - function invert(point) { - point = projectRotateTransform.invert(point[0], point[1]); - return point && [point[0] * degrees$1, point[1] * degrees$1]; +var lengthStream = { + point: noop$1, + lineStart: function() { + lengthStream.point = lengthPointFirst; + }, + lineEnd: function() { + if (lengthRing) lengthPoint(x00, y00); + lengthStream.point = noop$1; + }, + polygonStart: function() { + lengthRing = true; + }, + polygonEnd: function() { + lengthRing = null; + }, + result: function() { + var length = +lengthSum; + lengthSum = new Adder(); + return length; } +}; - projection.stream = function(stream) { - return cache && cacheStream === stream ? cache : cache = transformRadians(transformRotate(rotate)(preclip(projectResample(postclip(cacheStream = stream))))); - }; +function lengthPointFirst(x, y) { + lengthStream.point = lengthPoint; + x00 = x0 = x, y00 = y0 = y; +} - projection.preclip = function(_) { - return arguments.length ? (preclip = _, theta = undefined, reset()) : preclip; - }; +function lengthPoint(x, y) { + x0 -= x, y0 -= y; + lengthSum.add(sqrt$2(x0 * x0 + y0 * y0)); + x0 = x, y0 = y; +} - projection.postclip = function(_) { - return arguments.length ? (postclip = _, x0 = y0 = x1 = y1 = null, reset()) : postclip; - }; +function PathString() { + this._string = []; +} - projection.clipAngle = function(_) { - return arguments.length ? (preclip = +_ ? clipCircle(theta = _ * radians) : (theta = null, clipAntimeridian), reset()) : theta * degrees$1; - }; +PathString.prototype = { + _radius: 4.5, + _circle: circle$1(4.5), + pointRadius: function(_) { + if ((_ = +_) !== this._radius) this._radius = _, this._circle = null; + return this; + }, + polygonStart: function() { + this._line = 0; + }, + polygonEnd: function() { + this._line = NaN; + }, + lineStart: function() { + this._point = 0; + }, + lineEnd: function() { + if (this._line === 0) this._string.push("Z"); + this._point = NaN; + }, + point: function(x, y) { + switch (this._point) { + case 0: { + this._string.push("M", x, ",", y); + this._point = 1; + break; + } + case 1: { + this._string.push("L", x, ",", y); + break; + } + default: { + if (this._circle == null) this._circle = circle$1(this._radius); + this._string.push("M", x, ",", y, this._circle); + break; + } + } + }, + result: function() { + if (this._string.length) { + var result = this._string.join(""); + this._string = []; + return result; + } else { + return null; + } + } +}; - projection.clipExtent = function(_) { - return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$4) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]]; - }; +function circle$1(radius) { + return "m0," + radius + + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + + "z"; +} - projection.scale = function(_) { - return arguments.length ? (k = +_, recenter()) : k; - }; +function index$2(projection, context) { + var pointRadius = 4.5, + projectionStream, + contextStream; - projection.translate = function(_) { - return arguments.length ? (x = +_[0], y = +_[1], recenter()) : [x, y]; - }; + function path(object) { + if (object) { + if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments)); + geoStream(object, projectionStream(contextStream)); + } + return contextStream.result(); + } - projection.center = function(_) { - return arguments.length ? (lambda = _[0] % 360 * radians, phi = _[1] % 360 * radians, recenter()) : [lambda * degrees$1, phi * degrees$1]; + path.area = function(object) { + geoStream(object, projectionStream(areaStream)); + return areaStream.result(); }; - projection.rotate = function(_) { - return arguments.length ? (deltaLambda = _[0] % 360 * radians, deltaPhi = _[1] % 360 * radians, deltaGamma = _.length > 2 ? _[2] % 360 * radians : 0, recenter()) : [deltaLambda * degrees$1, deltaPhi * degrees$1, deltaGamma * degrees$1]; + path.measure = function(object) { + geoStream(object, projectionStream(lengthStream)); + return lengthStream.result(); }; - projection.angle = function(_) { - return arguments.length ? (alpha = _ % 360 * radians, recenter()) : alpha * degrees$1; + path.bounds = function(object) { + geoStream(object, projectionStream(boundsStream)); + return boundsStream.result(); }; - projection.reflectX = function(_) { - return arguments.length ? (sx = _ ? -1 : 1, recenter()) : sx < 0; + path.centroid = function(object) { + geoStream(object, projectionStream(centroidStream)); + return centroidStream.result(); }; - projection.reflectY = function(_) { - return arguments.length ? (sy = _ ? -1 : 1, recenter()) : sy < 0; + path.projection = function(_) { + return arguments.length ? (projectionStream = _ == null ? (projection = null, identity$5) : (projection = _).stream, path) : projection; }; - projection.precision = function(_) { - return arguments.length ? (projectResample = resample(projectTransform, delta2 = _ * _), reset()) : sqrt(delta2); + path.context = function(_) { + if (!arguments.length) return context; + contextStream = _ == null ? (context = null, new PathString) : new PathContext(context = _); + if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius); + return path; }; - projection.fitExtent = function(extent, object) { - return fitExtent(projection, extent, object); + path.pointRadius = function(_) { + if (!arguments.length) return pointRadius; + pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_); + return path; }; - projection.fitSize = function(size, object) { - return fitSize(projection, size, object); - }; + return path.projection(projection).context(context); +} - projection.fitWidth = function(width, object) { - return fitWidth(projection, width, object); +function transform$1(methods) { + return { + stream: transformer$3(methods) }; +} - projection.fitHeight = function(height, object) { - return fitHeight(projection, height, object); +function transformer$3(methods) { + return function(stream) { + var s = new TransformStream; + for (var key in methods) s[key] = methods[key]; + s.stream = stream; + return s; }; +} - function recenter() { - var center = scaleTranslateRotate(k, 0, 0, sx, sy, alpha).apply(null, project(lambda, phi)), - transform = (alpha ? scaleTranslateRotate : scaleTranslate)(k, x - center[0], y - center[1], sx, sy, alpha); - rotate = rotateRadians(deltaLambda, deltaPhi, deltaGamma); - projectTransform = compose(project, transform); - projectRotateTransform = compose(rotate, projectTransform); - projectResample = resample(projectTransform, delta2); - return reset(); - } +function TransformStream() {} - function reset() { - cache = cacheStream = null; - return projection; - } +TransformStream.prototype = { + constructor: TransformStream, + point: function(x, y) { this.stream.point(x, y); }, + sphere: function() { this.stream.sphere(); }, + lineStart: function() { this.stream.lineStart(); }, + lineEnd: function() { this.stream.lineEnd(); }, + polygonStart: function() { this.stream.polygonStart(); }, + polygonEnd: function() { this.stream.polygonEnd(); } +}; - return function() { - project = projectAt.apply(this, arguments); - projection.invert = project.invert && invert; - return recenter(); - }; +function fit(projection, fitBounds, object) { + var clip = projection.clipExtent && projection.clipExtent(); + projection.scale(150).translate([0, 0]); + if (clip != null) projection.clipExtent(null); + geoStream(object, projection.stream(boundsStream)); + fitBounds(boundsStream.result()); + if (clip != null) projection.clipExtent(clip); + return projection; } -function conicProjection(projectAt) { - var phi0 = 0, - phi1 = pi$3 / 3, - m = projectionMutator(projectAt), - p = m(phi0, phi1); - - p.parallels = function(_) { - return arguments.length ? m(phi0 = _[0] * radians, phi1 = _[1] * radians) : [phi0 * degrees$1, phi1 * degrees$1]; - }; +function fitExtent(projection, extent, object) { + return fit(projection, function(b) { + var w = extent[1][0] - extent[0][0], + h = extent[1][1] - extent[0][1], + k = Math.min(w / (b[1][0] - b[0][0]), h / (b[1][1] - b[0][1])), + x = +extent[0][0] + (w - k * (b[1][0] + b[0][0])) / 2, + y = +extent[0][1] + (h - k * (b[1][1] + b[0][1])) / 2; + projection.scale(150 * k).translate([x, y]); + }, object); +} - return p; +function fitSize(projection, size, object) { + return fitExtent(projection, [[0, 0], size], object); } -function cylindricalEqualAreaRaw(phi0) { - var cosPhi0 = cos$1(phi0); +function fitWidth(projection, width, object) { + return fit(projection, function(b) { + var w = +width, + k = w / (b[1][0] - b[0][0]), + x = (w - k * (b[1][0] + b[0][0])) / 2, + y = -k * b[0][1]; + projection.scale(150 * k).translate([x, y]); + }, object); +} - function forward(lambda, phi) { - return [lambda * cosPhi0, sin$1(phi) / cosPhi0]; - } +function fitHeight(projection, height, object) { + return fit(projection, function(b) { + var h = +height, + k = h / (b[1][1] - b[0][1]), + x = -k * b[0][0], + y = (h - k * (b[1][1] + b[0][1])) / 2; + projection.scale(150 * k).translate([x, y]); + }, object); +} - forward.invert = function(x, y) { - return [x / cosPhi0, asin(y * cosPhi0)]; - }; +var maxDepth = 16, // maximum depth of subdivision + cosMinDistance = cos$1(30 * radians); // cos(minimum angular distance) - return forward; +function resample(project, delta2) { + return +delta2 ? resample$1(project, delta2) : resampleNone(project); } -function conicEqualAreaRaw(y0, y1) { - var sy0 = sin$1(y0), n = (sy0 + sin$1(y1)) / 2; - - // Are the parallels symmetrical around the Equator? - if (abs(n) < epsilon$2) return cylindricalEqualAreaRaw(y0); +function resampleNone(project) { + return transformer$3({ + point: function(x, y) { + x = project(x, y); + this.stream.point(x[0], x[1]); + } + }); +} - var c = 1 + sy0 * (2 * n - sy0), r0 = sqrt(c) / n; +function resample$1(project, delta2) { - function project(x, y) { - var r = sqrt(c - 2 * n * sin$1(y)) / n; - return [r * sin$1(x *= n), r0 - r * cos$1(x)]; + function resampleLineTo(x0, y0, lambda0, a0, b0, c0, x1, y1, lambda1, a1, b1, c1, depth, stream) { + var dx = x1 - x0, + dy = y1 - y0, + d2 = dx * dx + dy * dy; + if (d2 > 4 * delta2 && depth--) { + var a = a0 + a1, + b = b0 + b1, + c = c0 + c1, + m = sqrt$2(a * a + b * b + c * c), + phi2 = asin$1(c /= m), + lambda2 = abs$1(abs$1(c) - 1) < epsilon$1 || abs$1(lambda0 - lambda1) < epsilon$1 ? (lambda0 + lambda1) / 2 : atan2$1(b, a), + p = project(lambda2, phi2), + x2 = p[0], + y2 = p[1], + dx2 = x2 - x0, + dy2 = y2 - y0, + dz = dy * dx2 - dx * dy2; + if (dz * dz / d2 > delta2 // perpendicular projected distance + || abs$1((dx * dx2 + dy * dy2) / d2 - 0.5) > 0.3 // midpoint close to an end + || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) { // angular distance + resampleLineTo(x0, y0, lambda0, a0, b0, c0, x2, y2, lambda2, a /= m, b /= m, c, depth, stream); + stream.point(x2, y2); + resampleLineTo(x2, y2, lambda2, a, b, c, x1, y1, lambda1, a1, b1, c1, depth, stream); + } + } } + return function(stream) { + var lambda00, x00, y00, a00, b00, c00, // first point + lambda0, x0, y0, a0, b0, c0; // previous point - project.invert = function(x, y) { - var r0y = r0 - y, - l = atan2(x, abs(r0y)) * sign(r0y); - if (r0y * n < 0) - l -= pi$3 * sign(x) * sign(r0y); - return [l / n, asin((c - (x * x + r0y * r0y) * n * n) / (2 * n))]; - }; + var resampleStream = { + point: point, + lineStart: lineStart, + lineEnd: lineEnd, + polygonStart: function() { stream.polygonStart(); resampleStream.lineStart = ringStart; }, + polygonEnd: function() { stream.polygonEnd(); resampleStream.lineStart = lineStart; } + }; - return project; -} + function point(x, y) { + x = project(x, y); + stream.point(x[0], x[1]); + } -function conicEqualArea() { - return conicProjection(conicEqualAreaRaw) - .scale(155.424) - .center([0, 33.6442]); -} + function lineStart() { + x0 = NaN; + resampleStream.point = linePoint; + stream.lineStart(); + } + + function linePoint(lambda, phi) { + var c = cartesian([lambda, phi]), p = project(lambda, phi); + resampleLineTo(x0, y0, lambda0, a0, b0, c0, x0 = p[0], y0 = p[1], lambda0 = lambda, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream); + stream.point(x0, y0); + } + + function lineEnd() { + resampleStream.point = point; + stream.lineEnd(); + } + + function ringStart() { + lineStart(); + resampleStream.point = ringPoint; + resampleStream.lineEnd = ringEnd; + } + + function ringPoint(lambda, phi) { + linePoint(lambda00 = lambda, phi), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0; + resampleStream.point = linePoint; + } + + function ringEnd() { + resampleLineTo(x0, y0, lambda0, a0, b0, c0, x00, y00, lambda00, a00, b00, c00, maxDepth, stream); + resampleStream.lineEnd = lineEnd; + lineEnd(); + } + + return resampleStream; + }; +} + +var transformRadians = transformer$3({ + point: function(x, y) { + this.stream.point(x * radians, y * radians); + } +}); + +function transformRotate(rotate) { + return transformer$3({ + point: function(x, y) { + var r = rotate(x, y); + return this.stream.point(r[0], r[1]); + } + }); +} + +function scaleTranslate(k, dx, dy, sx, sy) { + function transform(x, y) { + x *= sx; y *= sy; + return [dx + k * x, dy - k * y]; + } + transform.invert = function(x, y) { + return [(x - dx) / k * sx, (dy - y) / k * sy]; + }; + return transform; +} + +function scaleTranslateRotate(k, dx, dy, sx, sy, alpha) { + if (!alpha) return scaleTranslate(k, dx, dy, sx, sy); + var cosAlpha = cos$1(alpha), + sinAlpha = sin$1(alpha), + a = cosAlpha * k, + b = sinAlpha * k, + ai = cosAlpha / k, + bi = sinAlpha / k, + ci = (sinAlpha * dy - cosAlpha * dx) / k, + fi = (sinAlpha * dx + cosAlpha * dy) / k; + function transform(x, y) { + x *= sx; y *= sy; + return [a * x - b * y + dx, dy - b * x - a * y]; + } + transform.invert = function(x, y) { + return [sx * (ai * x - bi * y + ci), sy * (fi - bi * x - ai * y)]; + }; + return transform; +} + +function projection(project) { + return projectionMutator(function() { return project; })(); +} + +function projectionMutator(projectAt) { + var project, + k = 150, // scale + x = 480, y = 250, // translate + lambda = 0, phi = 0, // center + deltaLambda = 0, deltaPhi = 0, deltaGamma = 0, rotate, // pre-rotate + alpha = 0, // post-rotate angle + sx = 1, // reflectX + sy = 1, // reflectX + theta = null, preclip = clipAntimeridian, // pre-clip angle + x0 = null, y0, x1, y1, postclip = identity$5, // post-clip extent + delta2 = 0.5, // precision + projectResample, + projectTransform, + projectRotateTransform, + cache, + cacheStream; + + function projection(point) { + return projectRotateTransform(point[0] * radians, point[1] * radians); + } + + function invert(point) { + point = projectRotateTransform.invert(point[0], point[1]); + return point && [point[0] * degrees, point[1] * degrees]; + } + + projection.stream = function(stream) { + return cache && cacheStream === stream ? cache : cache = transformRadians(transformRotate(rotate)(preclip(projectResample(postclip(cacheStream = stream))))); + }; + + projection.preclip = function(_) { + return arguments.length ? (preclip = _, theta = undefined, reset()) : preclip; + }; + + projection.postclip = function(_) { + return arguments.length ? (postclip = _, x0 = y0 = x1 = y1 = null, reset()) : postclip; + }; + + projection.clipAngle = function(_) { + return arguments.length ? (preclip = +_ ? clipCircle(theta = _ * radians) : (theta = null, clipAntimeridian), reset()) : theta * degrees; + }; + + projection.clipExtent = function(_) { + return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$5) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]]; + }; + + projection.scale = function(_) { + return arguments.length ? (k = +_, recenter()) : k; + }; + + projection.translate = function(_) { + return arguments.length ? (x = +_[0], y = +_[1], recenter()) : [x, y]; + }; + + projection.center = function(_) { + return arguments.length ? (lambda = _[0] % 360 * radians, phi = _[1] % 360 * radians, recenter()) : [lambda * degrees, phi * degrees]; + }; + + projection.rotate = function(_) { + return arguments.length ? (deltaLambda = _[0] % 360 * radians, deltaPhi = _[1] % 360 * radians, deltaGamma = _.length > 2 ? _[2] % 360 * radians : 0, recenter()) : [deltaLambda * degrees, deltaPhi * degrees, deltaGamma * degrees]; + }; + + projection.angle = function(_) { + return arguments.length ? (alpha = _ % 360 * radians, recenter()) : alpha * degrees; + }; + + projection.reflectX = function(_) { + return arguments.length ? (sx = _ ? -1 : 1, recenter()) : sx < 0; + }; + + projection.reflectY = function(_) { + return arguments.length ? (sy = _ ? -1 : 1, recenter()) : sy < 0; + }; + + projection.precision = function(_) { + return arguments.length ? (projectResample = resample(projectTransform, delta2 = _ * _), reset()) : sqrt$2(delta2); + }; + + projection.fitExtent = function(extent, object) { + return fitExtent(projection, extent, object); + }; + + projection.fitSize = function(size, object) { + return fitSize(projection, size, object); + }; + + projection.fitWidth = function(width, object) { + return fitWidth(projection, width, object); + }; + + projection.fitHeight = function(height, object) { + return fitHeight(projection, height, object); + }; + + function recenter() { + var center = scaleTranslateRotate(k, 0, 0, sx, sy, alpha).apply(null, project(lambda, phi)), + transform = scaleTranslateRotate(k, x - center[0], y - center[1], sx, sy, alpha); + rotate = rotateRadians(deltaLambda, deltaPhi, deltaGamma); + projectTransform = compose(project, transform); + projectRotateTransform = compose(rotate, projectTransform); + projectResample = resample(projectTransform, delta2); + return reset(); + } + + function reset() { + cache = cacheStream = null; + return projection; + } + + return function() { + project = projectAt.apply(this, arguments); + projection.invert = project.invert && invert; + return recenter(); + }; +} + +function conicProjection(projectAt) { + var phi0 = 0, + phi1 = pi$1 / 3, + m = projectionMutator(projectAt), + p = m(phi0, phi1); + + p.parallels = function(_) { + return arguments.length ? m(phi0 = _[0] * radians, phi1 = _[1] * radians) : [phi0 * degrees, phi1 * degrees]; + }; + + return p; +} + +function cylindricalEqualAreaRaw(phi0) { + var cosPhi0 = cos$1(phi0); + + function forward(lambda, phi) { + return [lambda * cosPhi0, sin$1(phi) / cosPhi0]; + } + + forward.invert = function(x, y) { + return [x / cosPhi0, asin$1(y * cosPhi0)]; + }; + + return forward; +} + +function conicEqualAreaRaw(y0, y1) { + var sy0 = sin$1(y0), n = (sy0 + sin$1(y1)) / 2; + + // Are the parallels symmetrical around the Equator? + if (abs$1(n) < epsilon$1) return cylindricalEqualAreaRaw(y0); + + var c = 1 + sy0 * (2 * n - sy0), r0 = sqrt$2(c) / n; + + function project(x, y) { + var r = sqrt$2(c - 2 * n * sin$1(y)) / n; + return [r * sin$1(x *= n), r0 - r * cos$1(x)]; + } + + project.invert = function(x, y) { + var r0y = r0 - y, + l = atan2$1(x, abs$1(r0y)) * sign$1(r0y); + if (r0y * n < 0) + l -= pi$1 * sign$1(x) * sign$1(r0y); + return [l / n, asin$1((c - (x * x + r0y * r0y) * n * n) / (2 * n))]; + }; + + return project; +} + +function conicEqualArea() { + return conicProjection(conicEqualAreaRaw) + .scale(155.424) + .center([0, 33.6442]); +} function albers() { return conicEqualArea() @@ -10244,12 +11846,12 @@ function albersUsa() { alaskaPoint = alaska .translate([x - 0.307 * k, y + 0.201 * k]) - .clipExtent([[x - 0.425 * k + epsilon$2, y + 0.120 * k + epsilon$2], [x - 0.214 * k - epsilon$2, y + 0.234 * k - epsilon$2]]) + .clipExtent([[x - 0.425 * k + epsilon$1, y + 0.120 * k + epsilon$1], [x - 0.214 * k - epsilon$1, y + 0.234 * k - epsilon$1]]) .stream(pointStream); hawaiiPoint = hawaii .translate([x - 0.205 * k, y + 0.212 * k]) - .clipExtent([[x - 0.214 * k + epsilon$2, y + 0.166 * k + epsilon$2], [x - 0.115 * k - epsilon$2, y + 0.234 * k - epsilon$2]]) + .clipExtent([[x - 0.214 * k + epsilon$1, y + 0.166 * k + epsilon$1], [x - 0.115 * k - epsilon$1, y + 0.234 * k - epsilon$1]]) .stream(pointStream); return reset(); @@ -10284,6 +11886,7 @@ function azimuthalRaw(scale) { var cx = cos$1(x), cy = cos$1(y), k = scale(cx * cy); + if (k === Infinity) return [2, 0]; return [ k * cy * sin$1(x), k * sin$1(y) @@ -10293,23 +11896,23 @@ function azimuthalRaw(scale) { function azimuthalInvert(angle) { return function(x, y) { - var z = sqrt(x * x + y * y), + var z = sqrt$2(x * x + y * y), c = angle(z), sc = sin$1(c), cc = cos$1(c); return [ - atan2(x * sc, z * cc), - asin(z && y * sc / z) + atan2$1(x * sc, z * cc), + asin$1(z && y * sc / z) ]; } } var azimuthalEqualAreaRaw = azimuthalRaw(function(cxcy) { - return sqrt(2 / (1 + cxcy)); + return sqrt$2(2 / (1 + cxcy)); }); azimuthalEqualAreaRaw.invert = azimuthalInvert(function(z) { - return 2 * asin(z / 2); + return 2 * asin$1(z / 2); }); function azimuthalEqualArea() { @@ -10319,7 +11922,7 @@ function azimuthalEqualArea() { } var azimuthalEquidistantRaw = azimuthalRaw(function(c) { - return (c = acos(c)) && c / sin$1(c); + return (c = acos$1(c)) && c / sin$1(c); }); azimuthalEquidistantRaw.invert = azimuthalInvert(function(z) { @@ -10333,16 +11936,16 @@ function azimuthalEquidistant() { } function mercatorRaw(lambda, phi) { - return [lambda, log(tan((halfPi$2 + phi) / 2))]; + return [lambda, log$1(tan((halfPi$1 + phi) / 2))]; } mercatorRaw.invert = function(x, y) { - return [x, 2 * atan(exp(y)) - halfPi$2]; + return [x, 2 * atan(exp(y)) - halfPi$1]; }; function mercator() { return mercatorProjection(mercatorRaw) - .scale(961 / tau$3); + .scale(961 / tau$1); } function mercatorProjection(project) { @@ -10370,7 +11973,7 @@ function mercatorProjection(project) { }; function reclip() { - var k = pi$3 * scale(), + var k = pi$1 * scale(), t = m(rotation(m.rotate()).invert([0, 0])); return clipExtent(x0 == null ? [[t[0] - k, t[1] - k], [t[0] + k, t[1] + k]] : project === mercatorRaw @@ -10382,29 +11985,29 @@ function mercatorProjection(project) { } function tany(y) { - return tan((halfPi$2 + y) / 2); + return tan((halfPi$1 + y) / 2); } function conicConformalRaw(y0, y1) { var cy0 = cos$1(y0), - n = y0 === y1 ? sin$1(y0) : log(cy0 / cos$1(y1)) / log(tany(y1) / tany(y0)), - f = cy0 * pow(tany(y0), n) / n; + n = y0 === y1 ? sin$1(y0) : log$1(cy0 / cos$1(y1)) / log$1(tany(y1) / tany(y0)), + f = cy0 * pow$1(tany(y0), n) / n; if (!n) return mercatorRaw; function project(x, y) { - if (f > 0) { if (y < -halfPi$2 + epsilon$2) y = -halfPi$2 + epsilon$2; } - else { if (y > halfPi$2 - epsilon$2) y = halfPi$2 - epsilon$2; } - var r = f / pow(tany(y), n); + if (f > 0) { if (y < -halfPi$1 + epsilon$1) y = -halfPi$1 + epsilon$1; } + else { if (y > halfPi$1 - epsilon$1) y = halfPi$1 - epsilon$1; } + var r = f / pow$1(tany(y), n); return [r * sin$1(n * x), f - r * cos$1(n * x)]; } project.invert = function(x, y) { - var fy = f - y, r = sign(n) * sqrt(x * x + fy * fy), - l = atan2(x, abs(fy)) * sign(fy); + var fy = f - y, r = sign$1(n) * sqrt$2(x * x + fy * fy), + l = atan2$1(x, abs$1(fy)) * sign$1(fy); if (fy * n < 0) - l -= pi$3 * sign(x) * sign(fy); - return [l / n, 2 * atan(pow(f / r, 1 / n)) - halfPi$2]; + l -= pi$1 * sign$1(x) * sign$1(fy); + return [l / n, 2 * atan(pow$1(f / r, 1 / n)) - halfPi$1]; }; return project; @@ -10432,7 +12035,7 @@ function conicEquidistantRaw(y0, y1) { n = y0 === y1 ? sin$1(y0) : (cy0 - cos$1(y1)) / (y1 - y0), g = cy0 / n + y0; - if (abs(n) < epsilon$2) return equirectangularRaw; + if (abs$1(n) < epsilon$1) return equirectangularRaw; function project(x, y) { var gy = g - y, nx = n * x; @@ -10441,10 +12044,10 @@ function conicEquidistantRaw(y0, y1) { project.invert = function(x, y) { var gy = g - y, - l = atan2(x, abs(gy)) * sign(gy); + l = atan2$1(x, abs$1(gy)) * sign$1(gy); if (gy * n < 0) - l -= pi$3 * sign(x) * sign(gy); - return [l / n, g - sign(n) * sqrt(x * x + gy * gy)]; + l -= pi$1 * sign$1(x) * sign$1(gy); + return [l / n, g - sign$1(n) * sqrt$2(x * x + gy * gy)]; }; return project; @@ -10460,11 +12063,11 @@ var A1 = 1.340264, A2 = -0.081106, A3 = 0.000893, A4 = 0.003796, - M = sqrt(3) / 2, + M = sqrt$2(3) / 2, iterations = 12; function equalEarthRaw(lambda, phi) { - var l = asin(M * sin$1(phi)), l2 = l * l, l6 = l2 * l2 * l2; + var l = asin$1(M * sin$1(phi)), l2 = l * l, l6 = l2 * l2 * l2; return [ lambda * cos$1(l) / (M * (A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2))), l * (A1 + A2 * l2 + l6 * (A3 + A4 * l2)) @@ -10477,11 +12080,11 @@ equalEarthRaw.invert = function(x, y) { fy = l * (A1 + A2 * l2 + l6 * (A3 + A4 * l2)) - y; fpy = A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2); l -= delta = fy / fpy, l2 = l * l, l6 = l2 * l2 * l2; - if (abs(delta) < epsilon2$1) break; + if (abs$1(delta) < epsilon2) break; } return [ M * x * (A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2)) / cos$1(l), - asin(sin$1(l) / M) + asin$1(sin$1(l) / M) ]; }; @@ -10503,18 +12106,18 @@ function gnomonic() { .clipAngle(60); } -function identity$5() { +function identity$4() { var k = 1, tx = 0, ty = 0, sx = 1, sy = 1, // scale, translate and reflect alpha = 0, ca, sa, // angle x0 = null, y0, x1, y1, // clip extent kx = 1, ky = 1, - transform = transformer({ + transform = transformer$3({ point: function(x, y) { var p = projection([x, y]); this.stream.point(p[0], p[1]); } }), - postclip = identity$4, + postclip = identity$5, cache, cacheStream; @@ -10550,7 +12153,7 @@ function identity$5() { return arguments.length ? (postclip = _, x0 = y0 = x1 = y1 = null, reset()) : postclip; }; projection.clipExtent = function(_) { - return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$4) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]]; + return arguments.length ? (postclip = _ == null ? (x0 = y0 = x1 = y1 = null, identity$5) : clipRectangle(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]), reset()) : x0 == null ? null : [[x0, y0], [x1, y1]]; }; projection.scale = function(_) { return arguments.length ? (k = +_, reset()) : k; @@ -10559,7 +12162,7 @@ function identity$5() { return arguments.length ? (tx = +_[0], ty = +_[1], reset()) : [tx, ty]; }; projection.angle = function(_) { - return arguments.length ? (alpha = _ % 360 * radians, sa = sin$1(alpha), ca = cos$1(alpha), reset()) : alpha * degrees$1; + return arguments.length ? (alpha = _ % 360 * radians, sa = sin$1(alpha), ca = cos$1(alpha), reset()) : alpha * degrees; }; projection.reflectX = function(_) { return arguments.length ? (sx = _ ? -1 : 1, reset()) : sx < 0; @@ -10597,7 +12200,7 @@ naturalEarth1Raw.invert = function(x, y) { var phi2 = phi * phi, phi4 = phi2 * phi2; phi -= delta = (phi * (1.007226 + phi2 * (0.015085 + phi4 * (-0.044475 + 0.028874 * phi2 - 0.005916 * phi4))) - y) / (1.007226 + phi2 * (0.015085 * 3 + phi4 * (-0.044475 * 7 + 0.028874 * 9 * phi2 - 0.005916 * 11 * phi4))); - } while (abs(delta) > epsilon$2 && --i > 0); + } while (abs$1(delta) > epsilon$1 && --i > 0); return [ x / (0.8707 + (phi2 = phi * phi) * (-0.131979 + phi2 * (-0.013791 + phi2 * phi2 * phi2 * (0.003971 - 0.001529 * phi2)))), phi @@ -10613,12 +12216,12 @@ function orthographicRaw(x, y) { return [cos$1(y) * sin$1(x), sin$1(y)]; } -orthographicRaw.invert = azimuthalInvert(asin); +orthographicRaw.invert = azimuthalInvert(asin$1); function orthographic() { return projection(orthographicRaw) .scale(249.5) - .clipAngle(90 + epsilon$2); + .clipAngle(90 + epsilon$1); } function stereographicRaw(x, y) { @@ -10637,11 +12240,11 @@ function stereographic() { } function transverseMercatorRaw(lambda, phi) { - return [log(tan((halfPi$2 + phi) / 2)), -lambda]; + return [log$1(tan((halfPi$1 + phi) / 2)), -lambda]; } transverseMercatorRaw.invert = function(x, y) { - return [-y, 2 * atan(exp(x)) - halfPi$2]; + return [-y, 2 * atan(exp(x)) - halfPi$1]; }; function transverseMercator() { @@ -10661,7 +12264,7 @@ function transverseMercator() { .scale(159.155); } -function defaultSeparation(a, b) { +function defaultSeparation$1(a, b) { return a.parent === b.parent ? 1 : 2; } @@ -10694,7 +12297,7 @@ function leafRight(node) { } function cluster() { - var separation = defaultSeparation, + var separation = defaultSeparation$1, dx = 1, dy = 1, nodeSize = false; @@ -10759,45 +12362,52 @@ function node_count() { return this.eachAfter(count); } -function node_each(callback) { - var node = this, current, next = [node], children, i, n; - do { - current = next.reverse(), next = []; - while (node = current.pop()) { - callback(node), children = node.children; - if (children) for (i = 0, n = children.length; i < n; ++i) { - next.push(children[i]); - } - } - } while (next.length); +function node_each(callback, that) { + let index = -1; + for (const node of this) { + callback.call(that, node, ++index, this); + } return this; } -function node_eachBefore(callback) { - var node = this, nodes = [node], children, i; +function node_eachBefore(callback, that) { + var node = this, nodes = [node], children, i, index = -1; while (node = nodes.pop()) { - callback(node), children = node.children; - if (children) for (i = children.length - 1; i >= 0; --i) { - nodes.push(children[i]); + callback.call(that, node, ++index, this); + if (children = node.children) { + for (i = children.length - 1; i >= 0; --i) { + nodes.push(children[i]); + } } } return this; } -function node_eachAfter(callback) { - var node = this, nodes = [node], next = [], children, i, n; +function node_eachAfter(callback, that) { + var node = this, nodes = [node], next = [], children, i, n, index = -1; while (node = nodes.pop()) { - next.push(node), children = node.children; - if (children) for (i = 0, n = children.length; i < n; ++i) { - nodes.push(children[i]); + next.push(node); + if (children = node.children) { + for (i = 0, n = children.length; i < n; ++i) { + nodes.push(children[i]); + } } } while (node = next.pop()) { - callback(node); + callback.call(that, node, ++index, this); } return this; } +function node_find(callback, that) { + let index = -1; + for (const node of this) { + if (callback.call(that, node, ++index, this)) { + return node; + } + } +} + function node_sum(value) { return this.eachAfter(function(node) { var sum = +value(node.data) || 0, @@ -10856,11 +12466,7 @@ function node_ancestors() { } function node_descendants() { - var nodes = []; - this.each(function(node) { - nodes.push(node); - }); - return nodes; + return Array.from(this); } function node_leaves() { @@ -10883,9 +12489,30 @@ function node_links() { return links; } +function* node_iterator() { + var node = this, current, next = [node], children, i, n; + do { + current = next.reverse(), next = []; + while (node = current.pop()) { + yield node; + if (children = node.children) { + for (i = 0, n = children.length; i < n; ++i) { + next.push(children[i]); + } + } + } + } while (next.length); +} + function hierarchy(data, children) { - var root = new Node(data), - valued = +data.value && (root.value = data.value), + if (data instanceof Map) { + data = [undefined, data]; + if (children === undefined) children = mapChildren; + } else if (children === undefined) { + children = objectChildren; + } + + var root = new Node$1(data), node, nodes = [root], child, @@ -10893,14 +12520,11 @@ function hierarchy(data, children) { i, n; - if (children == null) children = defaultChildren; - while (node = nodes.pop()) { - if (valued) node.value = +node.data.value; - if ((childs = children(node.data)) && (n = childs.length)) { - node.children = new Array(n); + if ((childs = children(node.data)) && (n = (childs = Array.from(childs)).length)) { + node.children = childs; for (i = n - 1; i >= 0; --i) { - nodes.push(child = node.children[i] = new Node(childs[i])); + nodes.push(child = childs[i] = new Node$1(childs[i])); child.parent = node; child.depth = node.depth + 1; } @@ -10914,11 +12538,16 @@ function node_copy() { return hierarchy(this).eachBefore(copyData); } -function defaultChildren(d) { +function objectChildren(d) { return d.children; } +function mapChildren(d) { + return Array.isArray(d) ? d[1] : null; +} + function copyData(node) { + if (node.data.value !== undefined) node.value = node.data.value; node.data = node.data.data; } @@ -10928,19 +12557,20 @@ function computeHeight(node) { while ((node = node.parent) && (node.height < ++height)); } -function Node(data) { +function Node$1(data) { this.data = data; this.depth = this.height = 0; this.parent = null; } -Node.prototype = hierarchy.prototype = { - constructor: Node, +Node$1.prototype = hierarchy.prototype = { + constructor: Node$1, count: node_count, each: node_each, eachAfter: node_eachAfter, eachBefore: node_eachBefore, + find: node_find, sum: node_sum, sort: node_sort, path: node_path, @@ -10948,12 +12578,17 @@ Node.prototype = hierarchy.prototype = { descendants: node_descendants, leaves: node_leaves, links: node_links, - copy: node_copy + copy: node_copy, + [Symbol.iterator]: node_iterator }; -var slice$4 = Array.prototype.slice; +function array$1(x) { + return typeof x === "object" && "length" in x + ? x // Array, TypedArray, NodeList, array-like + : Array.from(x); // Map, Set, iterable, string, or anything else +} -function shuffle$1(array) { +function shuffle(array) { var m = array.length, t, i; @@ -10969,7 +12604,7 @@ function shuffle$1(array) { } function enclose(circles) { - var i = 0, n = (circles = shuffle$1(slice$4.call(circles))).length, B = [], p, e; + var i = 0, n = (circles = shuffle(Array.from(circles))).length, B = [], p, e; while (i < n) { p = circles[i]; @@ -11015,7 +12650,7 @@ function enclosesNot(a, b) { } function enclosesWeak(a, b) { - var dr = a.r - b.r + 1e-6, dx = b.x - a.x, dy = b.y - a.y; + var dr = a.r - b.r + Math.max(a.r, b.r, 1) * 1e-9, dx = b.x - a.x, dy = b.y - a.y; return dr > 0 && dr * dr > dx * dx + dy * dy; } @@ -11123,14 +12758,14 @@ function score(node) { return dx * dx + dy * dy; } -function Node$1(circle) { +function Node(circle) { this._ = circle; this.next = null; this.previous = null; } function packEnclose(circles) { - if (!(n = circles.length)) return 0; + if (!(n = (circles = array$1(circles)).length)) return 0; var a, b, c, n, aa, ca, i, j, k, sj, sk; @@ -11146,14 +12781,14 @@ function packEnclose(circles) { place(b, a, c = circles[2]); // Initialize the front-chain using the first three circles a, b and c. - a = new Node$1(a), b = new Node$1(b), c = new Node$1(c); + a = new Node(a), b = new Node(b), c = new Node(c); a.next = c.previous = b; b.next = a.previous = c; c.next = b.previous = a; // Attempt to place each remaining circle… pack: for (i = 3; i < n; ++i) { - place(a._, b._, c = circles[i]), c = new Node$1(c); + place(a._, b._, c = circles[i]), c = new Node(c); // Find the closest intersecting circle on the front-chain, if any. // “Closeness” is determined by linear distance along the front-chain. @@ -11215,17 +12850,17 @@ function constantZero() { return 0; } -function constant$9(x) { +function constant$2(x) { return function() { return x; }; } -function defaultRadius$1(d) { +function defaultRadius(d) { return Math.sqrt(d.value); } -function index$2() { +function index$1() { var radius = null, dx = 1, dy = 1, @@ -11238,7 +12873,7 @@ function index$2() { .eachAfter(packChildren(padding, 0.5)) .eachBefore(translateChild(1)); } else { - root.eachBefore(radiusLeaf(defaultRadius$1)) + root.eachBefore(radiusLeaf(defaultRadius)) .eachAfter(packChildren(constantZero, 1)) .eachAfter(packChildren(padding, root.r / Math.min(dx, dy))) .eachBefore(translateChild(Math.min(dx, dy) / (2 * root.r))); @@ -11255,7 +12890,7 @@ function index$2() { }; pack.padding = function(x) { - return arguments.length ? (padding = typeof x === "function" ? x : constant$9(+x), pack) : padding; + return arguments.length ? (padding = typeof x === "function" ? x : constant$2(+x), pack) : padding; }; return pack; @@ -11367,8 +13002,7 @@ function partition() { return partition; } -var keyPrefix$1 = "$", // Protect against keys like “__proto__”. - preroot = {depth: -1}, +var preroot = {depth: -1}, ambiguous = {}; function defaultId(d) { @@ -11384,37 +13018,40 @@ function stratify() { parentId = defaultParentId; function stratify(data) { - var d, + var nodes = Array.from(data), + n = nodes.length, + d, i, - n = data.length, root, parent, node, - nodes = new Array(n), nodeId, nodeKey, - nodeByKey = {}; + nodeByKey = new Map; for (i = 0; i < n; ++i) { - d = data[i], node = nodes[i] = new Node(d); + d = nodes[i], node = nodes[i] = new Node$1(d); if ((nodeId = id(d, i, data)) != null && (nodeId += "")) { - nodeKey = keyPrefix$1 + (node.id = nodeId); - nodeByKey[nodeKey] = nodeKey in nodeByKey ? ambiguous : node; + nodeKey = node.id = nodeId; + nodeByKey.set(nodeKey, nodeByKey.has(nodeKey) ? ambiguous : node); + } + if ((nodeId = parentId(d, i, data)) != null && (nodeId += "")) { + node.parent = nodeId; } } for (i = 0; i < n; ++i) { - node = nodes[i], nodeId = parentId(data[i], i, data); - if (nodeId == null || !(nodeId += "")) { - if (root) throw new Error("multiple roots"); - root = node; - } else { - parent = nodeByKey[keyPrefix$1 + nodeId]; + node = nodes[i]; + if (nodeId = node.parent) { + parent = nodeByKey.get(nodeId); if (!parent) throw new Error("missing: " + nodeId); if (parent === ambiguous) throw new Error("ambiguous: " + nodeId); if (parent.children) parent.children.push(node); else parent.children = [node]; node.parent = parent; + } else { + if (root) throw new Error("multiple roots"); + root = node; } } @@ -11438,7 +13075,7 @@ function stratify() { return stratify; } -function defaultSeparation$1(a, b) { +function defaultSeparation(a, b) { return a.parent === b.parent ? 1 : 2; } @@ -11509,7 +13146,7 @@ function TreeNode(node, i) { this.i = i; // number } -TreeNode.prototype = Object.create(Node.prototype); +TreeNode.prototype = Object.create(Node$1.prototype); function treeRoot(root) { var tree = new TreeNode(root, 0), @@ -11536,7 +13173,7 @@ function treeRoot(root) { // Node-link tree diagram using the Reingold-Tilford "tidy" algorithm function tree() { - var separation = defaultSeparation$1, + var separation = defaultSeparation, dx = 1, dy = 1, nodeSize = null; @@ -11751,7 +13388,7 @@ var squarify = (function custom(ratio) { return squarify; })(phi); -function index$3() { +function index() { var tile = squarify, round = false, dx = 1, @@ -11815,7 +13452,7 @@ function index$3() { }; treemap.paddingInner = function(x) { - return arguments.length ? (paddingInner = typeof x === "function" ? x : constant$9(+x), treemap) : paddingInner; + return arguments.length ? (paddingInner = typeof x === "function" ? x : constant$2(+x), treemap) : paddingInner; }; treemap.paddingOuter = function(x) { @@ -11823,19 +13460,19 @@ function index$3() { }; treemap.paddingTop = function(x) { - return arguments.length ? (paddingTop = typeof x === "function" ? x : constant$9(+x), treemap) : paddingTop; + return arguments.length ? (paddingTop = typeof x === "function" ? x : constant$2(+x), treemap) : paddingTop; }; treemap.paddingRight = function(x) { - return arguments.length ? (paddingRight = typeof x === "function" ? x : constant$9(+x), treemap) : paddingRight; + return arguments.length ? (paddingRight = typeof x === "function" ? x : constant$2(+x), treemap) : paddingRight; }; treemap.paddingBottom = function(x) { - return arguments.length ? (paddingBottom = typeof x === "function" ? x : constant$9(+x), treemap) : paddingBottom; + return arguments.length ? (paddingBottom = typeof x === "function" ? x : constant$2(+x), treemap) : paddingBottom; }; treemap.paddingLeft = function(x) { - return arguments.length ? (paddingLeft = typeof x === "function" ? x : constant$9(+x), treemap) : paddingLeft; + return arguments.length ? (paddingLeft = typeof x === "function" ? x : constant$2(+x), treemap) : paddingLeft; }; return treemap; @@ -11877,11 +13514,11 @@ function binary(parent, x0, y0, x1, y1) { valueRight = value - valueLeft; if ((x1 - x0) > (y1 - y0)) { - var xk = (x0 * valueRight + x1 * valueLeft) / value; + var xk = value ? (x0 * valueRight + x1 * valueLeft) / value : x1; partition(i, k, valueLeft, x0, y0, xk, y1); partition(k, j, valueRight, xk, y0, x1, y1); } else { - var yk = (y0 * valueRight + y1 * valueLeft) / value; + var yk = value ? (y0 * valueRight + y1 * valueLeft) / value : y1; partition(i, k, valueLeft, x0, y0, x1, yk); partition(k, j, valueRight, x0, yk, x1, y1); } @@ -11908,8 +13545,8 @@ var resquarify = (function custom(ratio) { while (++j < m) { row = rows[j], nodes = row.children; for (i = row.value = 0, n = nodes.length; i < n; ++i) row.value += nodes[i].value; - if (row.dice) treemapDice(row, x0, y0, x1, y0 += (y1 - y0) * row.value / value); - else treemapSlice(row, x0, y0, x0 += (x1 - x0) * row.value / value, y1); + if (row.dice) treemapDice(row, x0, y0, x1, value ? y0 += (y1 - y0) * row.value / value : y1); + else treemapSlice(row, x0, y0, value ? x0 += (x1 - x0) * row.value / value : x1, y1); value -= row.value; } } else { @@ -11925,7 +13562,7 @@ var resquarify = (function custom(ratio) { return resquarify; })(phi); -function area$2(polygon) { +function area$1(polygon) { var i = -1, n = polygon.length, a, @@ -11941,7 +13578,7 @@ function area$2(polygon) { return area / 2; } -function centroid$1(polygon) { +function centroid(polygon) { var i = -1, n = polygon.length, x = 0, @@ -11978,11 +13615,11 @@ function lexicographicOrder(a, b) { // Assumes points.length >= 3, is sorted by x, unique in y. // Returns an array of indices into points in left-to-right order. function computeUpperHullIndexes(points) { - var n = points.length, - indexes = [0, 1], - size = 2; + const n = points.length, + indexes = [0, 1]; + let size = 2, i; - for (var i = 2; i < n; ++i) { + for (i = 2; i < n; ++i) { while (size > 1 && cross$1(points[indexes[size - 2]], points[indexes[size - 1]], points[i]) <= 0) --size; indexes[size++] = i; } @@ -12018,7 +13655,7 @@ function hull(points) { return hull; } -function contains$2(polygon, point) { +function contains(polygon, point) { var n = polygon.length, p = polygon[n - 1], x = point[0], y = point[1], @@ -12035,7 +13672,7 @@ function contains$2(polygon, point) { return inside; } -function length$2(polygon) { +function length(polygon) { var i = -1, n = polygon.length, b = polygon[n - 1], @@ -12053,15 +13690,13 @@ function length$2(polygon) { yb = b[1]; xa -= xb; ya -= yb; - perimeter += Math.sqrt(xa * xa + ya * ya); + perimeter += Math.hypot(xa, ya); } return perimeter; } -function defaultSource$1() { - return Math.random(); -} +var defaultSource = Math.random; var uniform = (function sourceRandomUniform(source) { function randomUniform(min, max) { @@ -12077,7 +13712,22 @@ var uniform = (function sourceRandomUniform(source) { randomUniform.source = sourceRandomUniform; return randomUniform; -})(defaultSource$1); +})(defaultSource); + +var int = (function sourceRandomInt(source) { + function randomInt(min, max) { + if (arguments.length < 2) max = min, min = 0; + min = Math.floor(min); + max = Math.floor(max) - min; + return function() { + return Math.floor(source() * max + min); + }; + } + + randomInt.source = sourceRandomInt; + + return randomInt; +})(defaultSource); var normal = (function sourceRandomNormal(source) { function randomNormal(mu, sigma) { @@ -12104,11 +13754,13 @@ var normal = (function sourceRandomNormal(source) { randomNormal.source = sourceRandomNormal; return randomNormal; -})(defaultSource$1); +})(defaultSource); var logNormal = (function sourceRandomLogNormal(source) { + var N = normal.source(source); + function randomLogNormal() { - var randomNormal = normal.source(source).apply(this, arguments); + var randomNormal = N.apply(this, arguments); return function() { return Math.exp(randomNormal()); }; @@ -12117,24 +13769,29 @@ var logNormal = (function sourceRandomLogNormal(source) { randomLogNormal.source = sourceRandomLogNormal; return randomLogNormal; -})(defaultSource$1); +})(defaultSource); var irwinHall = (function sourceRandomIrwinHall(source) { function randomIrwinHall(n) { + if ((n = +n) <= 0) return () => 0; return function() { - for (var sum = 0, i = 0; i < n; ++i) sum += source(); - return sum; + for (var sum = 0, i = n; i > 1; --i) sum += source(); + return sum + i * source(); }; } randomIrwinHall.source = sourceRandomIrwinHall; return randomIrwinHall; -})(defaultSource$1); +})(defaultSource); var bates = (function sourceRandomBates(source) { + var I = irwinHall.source(source); + function randomBates(n) { - var randomIrwinHall = irwinHall.source(source)(n); + // use limiting distribution at n === 0 + if ((n = +n) === 0) return source; + var randomIrwinHall = I(n); return function() { return randomIrwinHall() / n; }; @@ -12143,19 +13800,230 @@ var bates = (function sourceRandomBates(source) { randomBates.source = sourceRandomBates; return randomBates; -})(defaultSource$1); +})(defaultSource); -var exponential$1 = (function sourceRandomExponential(source) { +var exponential = (function sourceRandomExponential(source) { function randomExponential(lambda) { return function() { - return -Math.log(1 - source()) / lambda; + return -Math.log1p(-source()) / lambda; }; } randomExponential.source = sourceRandomExponential; return randomExponential; -})(defaultSource$1); +})(defaultSource); + +var pareto = (function sourceRandomPareto(source) { + function randomPareto(alpha) { + if ((alpha = +alpha) < 0) throw new RangeError("invalid alpha"); + alpha = 1 / -alpha; + return function() { + return Math.pow(1 - source(), alpha); + }; + } + + randomPareto.source = sourceRandomPareto; + + return randomPareto; +})(defaultSource); + +var bernoulli = (function sourceRandomBernoulli(source) { + function randomBernoulli(p) { + if ((p = +p) < 0 || p > 1) throw new RangeError("invalid p"); + return function() { + return Math.floor(source() + p); + }; + } + + randomBernoulli.source = sourceRandomBernoulli; + + return randomBernoulli; +})(defaultSource); + +var geometric = (function sourceRandomGeometric(source) { + function randomGeometric(p) { + if ((p = +p) < 0 || p > 1) throw new RangeError("invalid p"); + if (p === 0) return () => Infinity; + if (p === 1) return () => 1; + p = Math.log1p(-p); + return function() { + return 1 + Math.floor(Math.log1p(-source()) / p); + }; + } + + randomGeometric.source = sourceRandomGeometric; + + return randomGeometric; +})(defaultSource); + +var gamma = (function sourceRandomGamma(source) { + var randomNormal = normal.source(source)(); + + function randomGamma(k, theta) { + if ((k = +k) < 0) throw new RangeError("invalid k"); + // degenerate distribution if k === 0 + if (k === 0) return () => 0; + theta = theta == null ? 1 : +theta; + // exponential distribution if k === 1 + if (k === 1) return () => -Math.log1p(-source()) * theta; + + var d = (k < 1 ? k + 1 : k) - 1 / 3, + c = 1 / (3 * Math.sqrt(d)), + multiplier = k < 1 ? () => Math.pow(source(), 1 / k) : () => 1; + return function() { + do { + do { + var x = randomNormal(), + v = 1 + c * x; + } while (v <= 0); + v *= v * v; + var u = 1 - source(); + } while (u >= 1 - 0.0331 * x * x * x * x && Math.log(u) >= 0.5 * x * x + d * (1 - v + Math.log(v))); + return d * v * multiplier() * theta; + }; + } + + randomGamma.source = sourceRandomGamma; + + return randomGamma; +})(defaultSource); + +var beta = (function sourceRandomBeta(source) { + var G = gamma.source(source); + + function randomBeta(alpha, beta) { + var X = G(alpha), + Y = G(beta); + return function() { + var x = X(); + return x === 0 ? 0 : x / (x + Y()); + }; + } + + randomBeta.source = sourceRandomBeta; + + return randomBeta; +})(defaultSource); + +var binomial = (function sourceRandomBinomial(source) { + var G = geometric.source(source), + B = beta.source(source); + + function randomBinomial(n, p) { + n = +n; + if ((p = +p) >= 1) return () => n; + if (p <= 0) return () => 0; + return function() { + var acc = 0, nn = n, pp = p; + while (nn * pp > 16 && nn * (1 - pp) > 16) { + var i = Math.floor((nn + 1) * pp), + y = B(i, nn - i + 1)(); + if (y <= pp) { + acc += i; + nn -= i; + pp = (pp - y) / (1 - y); + } else { + nn = i - 1; + pp /= y; + } + } + var sign = pp < 0.5, + pFinal = sign ? pp : 1 - pp, + g = G(pFinal); + for (var s = g(), k = 0; s <= nn; ++k) s += g(); + return acc + (sign ? k : nn - k); + }; + } + + randomBinomial.source = sourceRandomBinomial; + + return randomBinomial; +})(defaultSource); + +var weibull = (function sourceRandomWeibull(source) { + function randomWeibull(k, a, b) { + var outerFunc; + if ((k = +k) === 0) { + outerFunc = x => -Math.log(x); + } else { + k = 1 / k; + outerFunc = x => Math.pow(x, k); + } + a = a == null ? 0 : +a; + b = b == null ? 1 : +b; + return function() { + return a + b * outerFunc(-Math.log1p(-source())); + }; + } + + randomWeibull.source = sourceRandomWeibull; + + return randomWeibull; +})(defaultSource); + +var cauchy = (function sourceRandomCauchy(source) { + function randomCauchy(a, b) { + a = a == null ? 0 : +a; + b = b == null ? 1 : +b; + return function() { + return a + b * Math.tan(Math.PI * source()); + }; + } + + randomCauchy.source = sourceRandomCauchy; + + return randomCauchy; +})(defaultSource); + +var logistic = (function sourceRandomLogistic(source) { + function randomLogistic(a, b) { + a = a == null ? 0 : +a; + b = b == null ? 1 : +b; + return function() { + var u = source(); + return a + b * Math.log(u / (1 - u)); + }; + } + + randomLogistic.source = sourceRandomLogistic; + + return randomLogistic; +})(defaultSource); + +var poisson = (function sourceRandomPoisson(source) { + var G = gamma.source(source), + B = binomial.source(source); + + function randomPoisson(lambda) { + return function() { + var acc = 0, l = lambda; + while (l > 16) { + var n = Math.floor(0.875 * l), + t = G(n)(); + if (t > l) return acc + B(n - 1, l / t)(); + acc += n; + l -= t; + } + for (var s = -Math.log1p(-source()), k = 0; s <= l; ++k) s -= Math.log1p(-source()); + return acc + k; + }; + } + + randomPoisson.source = sourceRandomPoisson; + + return randomPoisson; +})(defaultSource); + +// https://en.wikipedia.org/wiki/Linear_congruential_generator#Parameters_in_common_use +const mul = 0x19660D; +const inc = 0x3C6EF35F; +const eps = 1 / 0x100000000; + +function lcg(seed = Math.random()) { + let state = (0 <= seed && seed < 1 ? seed / eps : Math.abs(seed)) | 0; + return () => (state = mul * state + inc | 0, eps * (state >>> 0)); +} function initRange(domain, range) { switch (arguments.length) { @@ -12169,21 +14037,25 @@ function initRange(domain, range) { function initInterpolator(domain, interpolator) { switch (arguments.length) { case 0: break; - case 1: this.interpolator(domain); break; - default: this.interpolator(interpolator).domain(domain); break; + case 1: { + if (typeof domain === "function") this.interpolator(domain); + else this.range(domain); + break; + } + default: { + this.domain(domain); + if (typeof interpolator === "function") this.interpolator(interpolator); + else this.range(interpolator); + break; + } } return this; } -var array$3 = Array.prototype; - -var map$3 = array$3.map; -var slice$5 = array$3.slice; - -var implicit = {name: "implicit"}; +const implicit = Symbol("implicit"); function ordinal() { - var index = map$1(), + var index = new Map(), domain = [], range = [], unknown = implicit; @@ -12199,14 +14071,17 @@ function ordinal() { scale.domain = function(_) { if (!arguments.length) return domain.slice(); - domain = [], index = map$1(); - var i = -1, n = _.length, d, key; - while (++i < n) if (!index.has(key = (d = _[i]) + "")) index.set(key, domain.push(d)); + domain = [], index = new Map(); + for (const value of _) { + const key = value + ""; + if (index.has(key)) continue; + index.set(key, domain.push(value)); + } return scale; }; scale.range = function(_) { - return arguments.length ? (range = slice$5.call(_), scale) : range.slice(); + return arguments.length ? (range = Array.from(_), scale) : range.slice(); }; scale.unknown = function(_) { @@ -12226,7 +14101,8 @@ function band() { var scale = ordinal().unknown(undefined), domain = scale.domain, ordinalRange = scale.range, - range = [0, 1], + r0 = 0, + r1 = 1, step, bandwidth, round = false, @@ -12238,9 +14114,9 @@ function band() { function rescale() { var n = domain().length, - reverse = range[1] < range[0], - start = range[reverse - 0], - stop = range[1 - reverse]; + reverse = r1 < r0, + start = reverse ? r1 : r0, + stop = reverse ? r0 : r1; step = (stop - start) / Math.max(1, n - paddingInner + paddingOuter * 2); if (round) step = Math.floor(step); start += (stop - start - step * (n - paddingInner)) * align; @@ -12255,11 +14131,11 @@ function band() { }; scale.range = function(_) { - return arguments.length ? (range = [+_[0], +_[1]], rescale()) : range.slice(); + return arguments.length ? ([r0, r1] = _, r0 = +r0, r1 = +r1, rescale()) : [r0, r1]; }; scale.rangeRound = function(_) { - return range = [+_[0], +_[1]], round = true, rescale(); + return [r0, r1] = _, r0 = +r0, r1 = +r1, round = true, rescale(); }; scale.bandwidth = function() { @@ -12291,7 +14167,7 @@ function band() { }; scale.copy = function() { - return band(domain(), range) + return band(domain(), [r0, r1]) .round(round) .paddingInner(paddingInner) .paddingOuter(paddingOuter) @@ -12315,34 +14191,34 @@ function pointish(scale) { return scale; } -function point$1() { +function point$4() { return pointish(band.apply(null, arguments).paddingInner(1)); } -function constant$a(x) { +function constants(x) { return function() { return x; }; } -function number$2(x) { +function number$1(x) { return +x; } var unit = [0, 1]; -function identity$6(x) { +function identity$3(x) { return x; } function normalize(a, b) { return (b -= (a = +a)) ? function(x) { return (x - a) / b; } - : constant$a(isNaN(b) ? NaN : 0.5); + : constants(isNaN(b) ? NaN : 0.5); } -function clamper(domain) { - var a = domain[0], b = domain[domain.length - 1], t; +function clamper(a, b) { + var t; if (a > b) t = a, a = b, b = t; return function(x) { return Math.max(a, Math.min(b, x)); }; } @@ -12379,7 +14255,7 @@ function polymap(domain, range, interpolate) { }; } -function copy(source, target) { +function copy$1(source, target) { return target .domain(source.domain()) .range(source.range()) @@ -12388,26 +14264,28 @@ function copy(source, target) { .unknown(source.unknown()); } -function transformer$1() { +function transformer$2() { var domain = unit, range = unit, - interpolate = interpolateValue, + interpolate = interpolate$2, transform, untransform, unknown, - clamp = identity$6, + clamp = identity$3, piecewise, output, input; function rescale() { - piecewise = Math.min(domain.length, range.length) > 2 ? polymap : bimap; + var n = Math.min(domain.length, range.length); + if (clamp !== identity$3) clamp = clamper(domain[0], domain[n - 1]); + piecewise = n > 2 ? polymap : bimap; output = input = null; return scale; } function scale(x) { - return isNaN(x = +x) ? unknown : (output || (output = piecewise(domain.map(transform), range, interpolate)))(transform(clamp(x))); + return x == null || isNaN(x = +x) ? unknown : (output || (output = piecewise(domain.map(transform), range, interpolate)))(transform(clamp(x))); } scale.invert = function(y) { @@ -12415,19 +14293,19 @@ function transformer$1() { }; scale.domain = function(_) { - return arguments.length ? (domain = map$3.call(_, number$2), clamp === identity$6 || (clamp = clamper(domain)), rescale()) : domain.slice(); + return arguments.length ? (domain = Array.from(_, number$1), rescale()) : domain.slice(); }; scale.range = function(_) { - return arguments.length ? (range = slice$5.call(_), rescale()) : range.slice(); + return arguments.length ? (range = Array.from(_), rescale()) : range.slice(); }; scale.rangeRound = function(_) { - return range = slice$5.call(_), interpolate = interpolateRound, rescale(); + return range = Array.from(_), interpolate = interpolateRound, rescale(); }; scale.clamp = function(_) { - return arguments.length ? (clamp = _ ? clamper(domain) : identity$6, scale) : clamp !== identity$6; + return arguments.length ? (clamp = _ ? true : identity$3, rescale()) : clamp !== identity$3; }; scale.interpolate = function(_) { @@ -12444,8 +14322,8 @@ function transformer$1() { }; } -function continuous(transform, untransform) { - return transformer$1()(transform, untransform); +function continuous() { + return transformer$2()(identity$3, identity$3); } function tickFormat(start, stop, count, specifier) { @@ -12491,38 +14369,36 @@ function linearish(scale) { scale.nice = function(count) { if (count == null) count = 10; - var d = domain(), - i0 = 0, - i1 = d.length - 1, - start = d[i0], - stop = d[i1], - step; + var d = domain(); + var i0 = 0; + var i1 = d.length - 1; + var start = d[i0]; + var stop = d[i1]; + var prestep; + var step; + var maxIter = 10; if (stop < start) { step = start, start = stop, stop = step; step = i0, i0 = i1, i1 = step; } - - step = tickIncrement(start, stop, count); - - if (step > 0) { - start = Math.floor(start / step) * step; - stop = Math.ceil(stop / step) * step; + + while (maxIter-- > 0) { step = tickIncrement(start, stop, count); - } else if (step < 0) { - start = Math.ceil(start * step) / step; - stop = Math.floor(stop * step) / step; - step = tickIncrement(start, stop, count); - } - - if (step > 0) { - d[i0] = Math.floor(start / step) * step; - d[i1] = Math.ceil(stop / step) * step; - domain(d); - } else if (step < 0) { - d[i0] = Math.ceil(start * step) / step; - d[i1] = Math.floor(stop * step) / step; - domain(d); + if (step === prestep) { + d[i0] = start; + d[i1] = stop; + return domain(d); + } else if (step > 0) { + start = Math.floor(start / step) * step; + stop = Math.ceil(stop / step) * step; + } else if (step < 0) { + start = Math.ceil(start * step) / step; + stop = Math.floor(stop * step) / step; + } else { + break; + } + prestep = step; } return scale; @@ -12531,11 +14407,11 @@ function linearish(scale) { return scale; } -function linear$2() { - var scale = continuous(identity$6, identity$6); +function linear() { + var scale = continuous(); scale.copy = function() { - return copy(scale, linear$2()); + return copy$1(scale, linear()); }; initRange.apply(scale, arguments); @@ -12543,17 +14419,17 @@ function linear$2() { return linearish(scale); } -function identity$7(domain) { +function identity$2(domain) { var unknown; function scale(x) { - return isNaN(x = +x) ? unknown : x; + return x == null || isNaN(x = +x) ? unknown : x; } scale.invert = scale; scale.domain = scale.range = function(_) { - return arguments.length ? (domain = map$3.call(_, number$2), scale) : domain.slice(); + return arguments.length ? (domain = Array.from(_, number$1), scale) : domain.slice(); }; scale.unknown = function(_) { @@ -12561,10 +14437,10 @@ function identity$7(domain) { }; scale.copy = function() { - return identity$7(domain).unknown(unknown); + return identity$2(domain).unknown(unknown); }; - domain = arguments.length ? map$3.call(domain, number$2) : [0, 1]; + domain = arguments.length ? Array.from(domain, number$1) : [0, 1]; return linearish(scale); } @@ -12670,15 +14546,15 @@ function loggish(transform) { z = []; if (!(base % 1) && j - i < n) { - i = Math.round(i) - 1, j = Math.round(j) + 1; - if (u > 0) for (; i < j; ++i) { + i = Math.floor(i), j = Math.ceil(j); + if (u > 0) for (; i <= j; ++i) { for (k = 1, p = pows(i); k < base; ++k) { t = p * k; if (t < u) continue; if (t > v) break; z.push(t); } - } else for (; i < j; ++i) { + } else for (; i <= j; ++i) { for (k = base - 1, p = pows(i); k >= 1; --k) { t = p * k; if (t < u) continue; @@ -12686,6 +14562,7 @@ function loggish(transform) { z.push(t); } } + if (z.length * 2 < n) z = ticks(u, v, n); } else { z = ticks(i, j, Math.min(j - i, n)).map(pows); } @@ -12716,11 +14593,11 @@ function loggish(transform) { return scale; } -function log$1() { - var scale = loggish(transformer$1()).domain([1, 10]); +function log() { + var scale = loggish(transformer$2()).domain([1, 10]); scale.copy = function() { - return copy(scale, log$1()).base(scale.base()); + return copy$1(scale, log()).base(scale.base()); }; initRange.apply(scale, arguments); @@ -12741,2870 +14618,2400 @@ function transformSymexp(c) { } function symlogish(transform) { - var c = 1, scale = transform(transformSymlog(c), transformSymexp(c)); - - scale.constant = function(_) { - return arguments.length ? transform(transformSymlog(c = +_), transformSymexp(c)) : c; - }; - - return linearish(scale); -} - -function symlog() { - var scale = symlogish(transformer$1()); - - scale.copy = function() { - return copy(scale, symlog()).constant(scale.constant()); - }; - - return initRange.apply(scale, arguments); -} - -function transformPow(exponent) { - return function(x) { - return x < 0 ? -Math.pow(-x, exponent) : Math.pow(x, exponent); - }; -} - -function transformSqrt(x) { - return x < 0 ? -Math.sqrt(-x) : Math.sqrt(x); -} - -function transformSquare(x) { - return x < 0 ? -x * x : x * x; -} - -function powish(transform) { - var scale = transform(identity$6, identity$6), - exponent = 1; - - function rescale() { - return exponent === 1 ? transform(identity$6, identity$6) - : exponent === 0.5 ? transform(transformSqrt, transformSquare) - : transform(transformPow(exponent), transformPow(1 / exponent)); - } - - scale.exponent = function(_) { - return arguments.length ? (exponent = +_, rescale()) : exponent; - }; - - return linearish(scale); -} - -function pow$1() { - var scale = powish(transformer$1()); - - scale.copy = function() { - return copy(scale, pow$1()).exponent(scale.exponent()); - }; - - initRange.apply(scale, arguments); - - return scale; -} - -function sqrt$1() { - return pow$1.apply(null, arguments).exponent(0.5); -} - -function quantile() { - var domain = [], - range = [], - thresholds = [], - unknown; - - function rescale() { - var i = 0, n = Math.max(1, range.length); - thresholds = new Array(n - 1); - while (++i < n) thresholds[i - 1] = threshold(domain, i / n); - return scale; - } - - function scale(x) { - return isNaN(x = +x) ? unknown : range[bisectRight(thresholds, x)]; - } - - scale.invertExtent = function(y) { - var i = range.indexOf(y); - return i < 0 ? [NaN, NaN] : [ - i > 0 ? thresholds[i - 1] : domain[0], - i < thresholds.length ? thresholds[i] : domain[domain.length - 1] - ]; - }; - - scale.domain = function(_) { - if (!arguments.length) return domain.slice(); - domain = []; - for (var i = 0, n = _.length, d; i < n; ++i) if (d = _[i], d != null && !isNaN(d = +d)) domain.push(d); - domain.sort(ascending); - return rescale(); - }; - - scale.range = function(_) { - return arguments.length ? (range = slice$5.call(_), rescale()) : range.slice(); - }; - - scale.unknown = function(_) { - return arguments.length ? (unknown = _, scale) : unknown; - }; - - scale.quantiles = function() { - return thresholds.slice(); - }; - - scale.copy = function() { - return quantile() - .domain(domain) - .range(range) - .unknown(unknown); - }; - - return initRange.apply(scale, arguments); -} - -function quantize$1() { - var x0 = 0, - x1 = 1, - n = 1, - domain = [0.5], - range = [0, 1], - unknown; - - function scale(x) { - return x <= x ? range[bisectRight(domain, x, 0, n)] : unknown; - } - - function rescale() { - var i = -1; - domain = new Array(n); - while (++i < n) domain[i] = ((i + 1) * x1 - (i - n) * x0) / (n + 1); - return scale; - } - - scale.domain = function(_) { - return arguments.length ? (x0 = +_[0], x1 = +_[1], rescale()) : [x0, x1]; - }; - - scale.range = function(_) { - return arguments.length ? (n = (range = slice$5.call(_)).length - 1, rescale()) : range.slice(); - }; - - scale.invertExtent = function(y) { - var i = range.indexOf(y); - return i < 0 ? [NaN, NaN] - : i < 1 ? [x0, domain[0]] - : i >= n ? [domain[n - 1], x1] - : [domain[i - 1], domain[i]]; - }; - - scale.unknown = function(_) { - return arguments.length ? (unknown = _, scale) : scale; - }; - - scale.thresholds = function() { - return domain.slice(); - }; - - scale.copy = function() { - return quantize$1() - .domain([x0, x1]) - .range(range) - .unknown(unknown); - }; - - return initRange.apply(linearish(scale), arguments); -} - -function threshold$1() { - var domain = [0.5], - range = [0, 1], - unknown, - n = 1; - - function scale(x) { - return x <= x ? range[bisectRight(domain, x, 0, n)] : unknown; - } - - scale.domain = function(_) { - return arguments.length ? (domain = slice$5.call(_), n = Math.min(domain.length, range.length - 1), scale) : domain.slice(); - }; - - scale.range = function(_) { - return arguments.length ? (range = slice$5.call(_), n = Math.min(domain.length, range.length - 1), scale) : range.slice(); - }; - - scale.invertExtent = function(y) { - var i = range.indexOf(y); - return [domain[i - 1], domain[i]]; - }; - - scale.unknown = function(_) { - return arguments.length ? (unknown = _, scale) : unknown; - }; - - scale.copy = function() { - return threshold$1() - .domain(domain) - .range(range) - .unknown(unknown); - }; - - return initRange.apply(scale, arguments); -} - -var t0$1 = new Date, - t1$1 = new Date; - -function newInterval(floori, offseti, count, field) { - - function interval(date) { - return floori(date = arguments.length === 0 ? new Date : new Date(+date)), date; - } - - interval.floor = function(date) { - return floori(date = new Date(+date)), date; - }; - - interval.ceil = function(date) { - return floori(date = new Date(date - 1)), offseti(date, 1), floori(date), date; - }; - - interval.round = function(date) { - var d0 = interval(date), - d1 = interval.ceil(date); - return date - d0 < d1 - date ? d0 : d1; - }; - - interval.offset = function(date, step) { - return offseti(date = new Date(+date), step == null ? 1 : Math.floor(step)), date; - }; - - interval.range = function(start, stop, step) { - var range = [], previous; - start = interval.ceil(start); - step = step == null ? 1 : Math.floor(step); - if (!(start < stop) || !(step > 0)) return range; // also handles Invalid Date - do range.push(previous = new Date(+start)), offseti(start, step), floori(start); - while (previous < start && start < stop); - return range; - }; - - interval.filter = function(test) { - return newInterval(function(date) { - if (date >= date) while (floori(date), !test(date)) date.setTime(date - 1); - }, function(date, step) { - if (date >= date) { - if (step < 0) while (++step <= 0) { - while (offseti(date, -1), !test(date)) {} // eslint-disable-line no-empty - } else while (--step >= 0) { - while (offseti(date, +1), !test(date)) {} // eslint-disable-line no-empty - } - } - }); - }; - - if (count) { - interval.count = function(start, end) { - t0$1.setTime(+start), t1$1.setTime(+end); - floori(t0$1), floori(t1$1); - return Math.floor(count(t0$1, t1$1)); - }; - - interval.every = function(step) { - step = Math.floor(step); - return !isFinite(step) || !(step > 0) ? null - : !(step > 1) ? interval - : interval.filter(field - ? function(d) { return field(d) % step === 0; } - : function(d) { return interval.count(0, d) % step === 0; }); - }; - } - - return interval; -} - -var millisecond = newInterval(function() { - // noop -}, function(date, step) { - date.setTime(+date + step); -}, function(start, end) { - return end - start; -}); - -// An optimized implementation for this simple case. -millisecond.every = function(k) { - k = Math.floor(k); - if (!isFinite(k) || !(k > 0)) return null; - if (!(k > 1)) return millisecond; - return newInterval(function(date) { - date.setTime(Math.floor(date / k) * k); - }, function(date, step) { - date.setTime(+date + step * k); - }, function(start, end) { - return (end - start) / k; - }); -}; -var milliseconds = millisecond.range; - -var durationSecond = 1e3; -var durationMinute = 6e4; -var durationHour = 36e5; -var durationDay = 864e5; -var durationWeek = 6048e5; - -var second = newInterval(function(date) { - date.setTime(date - date.getMilliseconds()); -}, function(date, step) { - date.setTime(+date + step * durationSecond); -}, function(start, end) { - return (end - start) / durationSecond; -}, function(date) { - return date.getUTCSeconds(); -}); -var seconds = second.range; - -var minute = newInterval(function(date) { - date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond); -}, function(date, step) { - date.setTime(+date + step * durationMinute); -}, function(start, end) { - return (end - start) / durationMinute; -}, function(date) { - return date.getMinutes(); -}); -var minutes = minute.range; - -var hour = newInterval(function(date) { - date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond - date.getMinutes() * durationMinute); -}, function(date, step) { - date.setTime(+date + step * durationHour); -}, function(start, end) { - return (end - start) / durationHour; -}, function(date) { - return date.getHours(); -}); -var hours = hour.range; - -var day = newInterval(function(date) { - date.setHours(0, 0, 0, 0); -}, function(date, step) { - date.setDate(date.getDate() + step); -}, function(start, end) { - return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationDay; -}, function(date) { - return date.getDate() - 1; -}); -var days = day.range; - -function weekday(i) { - return newInterval(function(date) { - date.setDate(date.getDate() - (date.getDay() + 7 - i) % 7); - date.setHours(0, 0, 0, 0); - }, function(date, step) { - date.setDate(date.getDate() + step * 7); - }, function(start, end) { - return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationWeek; - }); -} - -var sunday = weekday(0); -var monday = weekday(1); -var tuesday = weekday(2); -var wednesday = weekday(3); -var thursday = weekday(4); -var friday = weekday(5); -var saturday = weekday(6); - -var sundays = sunday.range; -var mondays = monday.range; -var tuesdays = tuesday.range; -var wednesdays = wednesday.range; -var thursdays = thursday.range; -var fridays = friday.range; -var saturdays = saturday.range; - -var month = newInterval(function(date) { - date.setDate(1); - date.setHours(0, 0, 0, 0); -}, function(date, step) { - date.setMonth(date.getMonth() + step); -}, function(start, end) { - return end.getMonth() - start.getMonth() + (end.getFullYear() - start.getFullYear()) * 12; -}, function(date) { - return date.getMonth(); -}); -var months = month.range; - -var year = newInterval(function(date) { - date.setMonth(0, 1); - date.setHours(0, 0, 0, 0); -}, function(date, step) { - date.setFullYear(date.getFullYear() + step); -}, function(start, end) { - return end.getFullYear() - start.getFullYear(); -}, function(date) { - return date.getFullYear(); -}); - -// An optimized implementation for this simple case. -year.every = function(k) { - return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : newInterval(function(date) { - date.setFullYear(Math.floor(date.getFullYear() / k) * k); - date.setMonth(0, 1); - date.setHours(0, 0, 0, 0); - }, function(date, step) { - date.setFullYear(date.getFullYear() + step * k); - }); -}; -var years = year.range; - -var utcMinute = newInterval(function(date) { - date.setUTCSeconds(0, 0); -}, function(date, step) { - date.setTime(+date + step * durationMinute); -}, function(start, end) { - return (end - start) / durationMinute; -}, function(date) { - return date.getUTCMinutes(); -}); -var utcMinutes = utcMinute.range; - -var utcHour = newInterval(function(date) { - date.setUTCMinutes(0, 0, 0); -}, function(date, step) { - date.setTime(+date + step * durationHour); -}, function(start, end) { - return (end - start) / durationHour; -}, function(date) { - return date.getUTCHours(); -}); -var utcHours = utcHour.range; - -var utcDay = newInterval(function(date) { - date.setUTCHours(0, 0, 0, 0); -}, function(date, step) { - date.setUTCDate(date.getUTCDate() + step); -}, function(start, end) { - return (end - start) / durationDay; -}, function(date) { - return date.getUTCDate() - 1; -}); -var utcDays = utcDay.range; - -function utcWeekday(i) { - return newInterval(function(date) { - date.setUTCDate(date.getUTCDate() - (date.getUTCDay() + 7 - i) % 7); - date.setUTCHours(0, 0, 0, 0); - }, function(date, step) { - date.setUTCDate(date.getUTCDate() + step * 7); - }, function(start, end) { - return (end - start) / durationWeek; - }); -} - -var utcSunday = utcWeekday(0); -var utcMonday = utcWeekday(1); -var utcTuesday = utcWeekday(2); -var utcWednesday = utcWeekday(3); -var utcThursday = utcWeekday(4); -var utcFriday = utcWeekday(5); -var utcSaturday = utcWeekday(6); - -var utcSundays = utcSunday.range; -var utcMondays = utcMonday.range; -var utcTuesdays = utcTuesday.range; -var utcWednesdays = utcWednesday.range; -var utcThursdays = utcThursday.range; -var utcFridays = utcFriday.range; -var utcSaturdays = utcSaturday.range; - -var utcMonth = newInterval(function(date) { - date.setUTCDate(1); - date.setUTCHours(0, 0, 0, 0); -}, function(date, step) { - date.setUTCMonth(date.getUTCMonth() + step); -}, function(start, end) { - return end.getUTCMonth() - start.getUTCMonth() + (end.getUTCFullYear() - start.getUTCFullYear()) * 12; -}, function(date) { - return date.getUTCMonth(); -}); -var utcMonths = utcMonth.range; - -var utcYear = newInterval(function(date) { - date.setUTCMonth(0, 1); - date.setUTCHours(0, 0, 0, 0); -}, function(date, step) { - date.setUTCFullYear(date.getUTCFullYear() + step); -}, function(start, end) { - return end.getUTCFullYear() - start.getUTCFullYear(); -}, function(date) { - return date.getUTCFullYear(); -}); - -// An optimized implementation for this simple case. -utcYear.every = function(k) { - return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : newInterval(function(date) { - date.setUTCFullYear(Math.floor(date.getUTCFullYear() / k) * k); - date.setUTCMonth(0, 1); - date.setUTCHours(0, 0, 0, 0); - }, function(date, step) { - date.setUTCFullYear(date.getUTCFullYear() + step * k); - }); -}; -var utcYears = utcYear.range; - -function localDate(d) { - if (0 <= d.y && d.y < 100) { - var date = new Date(-1, d.m, d.d, d.H, d.M, d.S, d.L); - date.setFullYear(d.y); - return date; - } - return new Date(d.y, d.m, d.d, d.H, d.M, d.S, d.L); -} - -function utcDate(d) { - if (0 <= d.y && d.y < 100) { - var date = new Date(Date.UTC(-1, d.m, d.d, d.H, d.M, d.S, d.L)); - date.setUTCFullYear(d.y); - return date; - } - return new Date(Date.UTC(d.y, d.m, d.d, d.H, d.M, d.S, d.L)); -} - -function newDate(y, m, d) { - return {y: y, m: m, d: d, H: 0, M: 0, S: 0, L: 0}; -} - -function formatLocale$1(locale) { - var locale_dateTime = locale.dateTime, - locale_date = locale.date, - locale_time = locale.time, - locale_periods = locale.periods, - locale_weekdays = locale.days, - locale_shortWeekdays = locale.shortDays, - locale_months = locale.months, - locale_shortMonths = locale.shortMonths; - - var periodRe = formatRe(locale_periods), - periodLookup = formatLookup(locale_periods), - weekdayRe = formatRe(locale_weekdays), - weekdayLookup = formatLookup(locale_weekdays), - shortWeekdayRe = formatRe(locale_shortWeekdays), - shortWeekdayLookup = formatLookup(locale_shortWeekdays), - monthRe = formatRe(locale_months), - monthLookup = formatLookup(locale_months), - shortMonthRe = formatRe(locale_shortMonths), - shortMonthLookup = formatLookup(locale_shortMonths); - - var formats = { - "a": formatShortWeekday, - "A": formatWeekday, - "b": formatShortMonth, - "B": formatMonth, - "c": null, - "d": formatDayOfMonth, - "e": formatDayOfMonth, - "f": formatMicroseconds, - "H": formatHour24, - "I": formatHour12, - "j": formatDayOfYear, - "L": formatMilliseconds, - "m": formatMonthNumber, - "M": formatMinutes, - "p": formatPeriod, - "q": formatQuarter, - "Q": formatUnixTimestamp, - "s": formatUnixTimestampSeconds, - "S": formatSeconds, - "u": formatWeekdayNumberMonday, - "U": formatWeekNumberSunday, - "V": formatWeekNumberISO, - "w": formatWeekdayNumberSunday, - "W": formatWeekNumberMonday, - "x": null, - "X": null, - "y": formatYear$1, - "Y": formatFullYear, - "Z": formatZone, - "%": formatLiteralPercent - }; - - var utcFormats = { - "a": formatUTCShortWeekday, - "A": formatUTCWeekday, - "b": formatUTCShortMonth, - "B": formatUTCMonth, - "c": null, - "d": formatUTCDayOfMonth, - "e": formatUTCDayOfMonth, - "f": formatUTCMicroseconds, - "H": formatUTCHour24, - "I": formatUTCHour12, - "j": formatUTCDayOfYear, - "L": formatUTCMilliseconds, - "m": formatUTCMonthNumber, - "M": formatUTCMinutes, - "p": formatUTCPeriod, - "q": formatUTCQuarter, - "Q": formatUnixTimestamp, - "s": formatUnixTimestampSeconds, - "S": formatUTCSeconds, - "u": formatUTCWeekdayNumberMonday, - "U": formatUTCWeekNumberSunday, - "V": formatUTCWeekNumberISO, - "w": formatUTCWeekdayNumberSunday, - "W": formatUTCWeekNumberMonday, - "x": null, - "X": null, - "y": formatUTCYear, - "Y": formatUTCFullYear, - "Z": formatUTCZone, - "%": formatLiteralPercent + var c = 1, scale = transform(transformSymlog(c), transformSymexp(c)); + + scale.constant = function(_) { + return arguments.length ? transform(transformSymlog(c = +_), transformSymexp(c)) : c; }; - var parses = { - "a": parseShortWeekday, - "A": parseWeekday, - "b": parseShortMonth, - "B": parseMonth, - "c": parseLocaleDateTime, - "d": parseDayOfMonth, - "e": parseDayOfMonth, - "f": parseMicroseconds, - "H": parseHour24, - "I": parseHour24, - "j": parseDayOfYear, - "L": parseMilliseconds, - "m": parseMonthNumber, - "M": parseMinutes, - "p": parsePeriod, - "q": parseQuarter, - "Q": parseUnixTimestamp, - "s": parseUnixTimestampSeconds, - "S": parseSeconds, - "u": parseWeekdayNumberMonday, - "U": parseWeekNumberSunday, - "V": parseWeekNumberISO, - "w": parseWeekdayNumberSunday, - "W": parseWeekNumberMonday, - "x": parseLocaleDate, - "X": parseLocaleTime, - "y": parseYear, - "Y": parseFullYear, - "Z": parseZone, - "%": parseLiteralPercent + return linearish(scale); +} + +function symlog() { + var scale = symlogish(transformer$2()); + + scale.copy = function() { + return copy$1(scale, symlog()).constant(scale.constant()); }; - // These recursive directive definitions must be deferred. - formats.x = newFormat(locale_date, formats); - formats.X = newFormat(locale_time, formats); - formats.c = newFormat(locale_dateTime, formats); - utcFormats.x = newFormat(locale_date, utcFormats); - utcFormats.X = newFormat(locale_time, utcFormats); - utcFormats.c = newFormat(locale_dateTime, utcFormats); + return initRange.apply(scale, arguments); +} - function newFormat(specifier, formats) { - return function(date) { - var string = [], - i = -1, - j = 0, - n = specifier.length, - c, - pad, - format; +function transformPow(exponent) { + return function(x) { + return x < 0 ? -Math.pow(-x, exponent) : Math.pow(x, exponent); + }; +} - if (!(date instanceof Date)) date = new Date(+date); +function transformSqrt(x) { + return x < 0 ? -Math.sqrt(-x) : Math.sqrt(x); +} - while (++i < n) { - if (specifier.charCodeAt(i) === 37) { - string.push(specifier.slice(j, i)); - if ((pad = pads[c = specifier.charAt(++i)]) != null) c = specifier.charAt(++i); - else pad = c === "e" ? " " : "0"; - if (format = formats[c]) c = format(date, pad); - string.push(c); - j = i + 1; - } - } +function transformSquare(x) { + return x < 0 ? -x * x : x * x; +} - string.push(specifier.slice(j, i)); - return string.join(""); - }; +function powish(transform) { + var scale = transform(identity$3, identity$3), + exponent = 1; + + function rescale() { + return exponent === 1 ? transform(identity$3, identity$3) + : exponent === 0.5 ? transform(transformSqrt, transformSquare) + : transform(transformPow(exponent), transformPow(1 / exponent)); } - function newParse(specifier, Z) { - return function(string) { - var d = newDate(1900, undefined, 1), - i = parseSpecifier(d, specifier, string += "", 0), - week, day$1; - if (i != string.length) return null; + scale.exponent = function(_) { + return arguments.length ? (exponent = +_, rescale()) : exponent; + }; - // If a UNIX timestamp is specified, return it. - if ("Q" in d) return new Date(d.Q); - if ("s" in d) return new Date(d.s * 1000 + ("L" in d ? d.L : 0)); + return linearish(scale); +} - // If this is utcParse, never use the local timezone. - if (Z && !("Z" in d)) d.Z = 0; +function pow() { + var scale = powish(transformer$2()); - // The am-pm flag is 0 for AM, and 1 for PM. - if ("p" in d) d.H = d.H % 12 + d.p * 12; + scale.copy = function() { + return copy$1(scale, pow()).exponent(scale.exponent()); + }; - // If the month was not specified, inherit from the quarter. - if (d.m === undefined) d.m = "q" in d ? d.q : 0; + initRange.apply(scale, arguments); - // Convert day-of-week and week-of-year to day-of-year. - if ("V" in d) { - if (d.V < 1 || d.V > 53) return null; - if (!("w" in d)) d.w = 1; - if ("Z" in d) { - week = utcDate(newDate(d.y, 0, 1)), day$1 = week.getUTCDay(); - week = day$1 > 4 || day$1 === 0 ? utcMonday.ceil(week) : utcMonday(week); - week = utcDay.offset(week, (d.V - 1) * 7); - d.y = week.getUTCFullYear(); - d.m = week.getUTCMonth(); - d.d = week.getUTCDate() + (d.w + 6) % 7; - } else { - week = localDate(newDate(d.y, 0, 1)), day$1 = week.getDay(); - week = day$1 > 4 || day$1 === 0 ? monday.ceil(week) : monday(week); - week = day.offset(week, (d.V - 1) * 7); - d.y = week.getFullYear(); - d.m = week.getMonth(); - d.d = week.getDate() + (d.w + 6) % 7; - } - } else if ("W" in d || "U" in d) { - if (!("w" in d)) d.w = "u" in d ? d.u % 7 : "W" in d ? 1 : 0; - day$1 = "Z" in d ? utcDate(newDate(d.y, 0, 1)).getUTCDay() : localDate(newDate(d.y, 0, 1)).getDay(); - d.m = 0; - d.d = "W" in d ? (d.w + 6) % 7 + d.W * 7 - (day$1 + 5) % 7 : d.w + d.U * 7 - (day$1 + 6) % 7; - } + return scale; +} - // If a time zone is specified, all fields are interpreted as UTC and then - // offset according to the specified time zone. - if ("Z" in d) { - d.H += d.Z / 100 | 0; - d.M += d.Z % 100; - return utcDate(d); - } +function sqrt$1() { + return pow.apply(null, arguments).exponent(0.5); +} - // Otherwise, all fields are in local time. - return localDate(d); - }; - } +function square$1(x) { + return Math.sign(x) * x * x; +} - function parseSpecifier(d, specifier, string, j) { - var i = 0, - n = specifier.length, - m = string.length, - c, - parse; +function unsquare(x) { + return Math.sign(x) * Math.sqrt(Math.abs(x)); +} - while (i < n) { - if (j >= m) return -1; - c = specifier.charCodeAt(i++); - if (c === 37) { - c = specifier.charAt(i++); - parse = parses[c in pads ? specifier.charAt(i++) : c]; - if (!parse || ((j = parse(d, string, j)) < 0)) return -1; - } else if (c != string.charCodeAt(j++)) { - return -1; - } - } +function radial() { + var squared = continuous(), + range = [0, 1], + round = false, + unknown; - return j; + function scale(x) { + var y = unsquare(squared(x)); + return isNaN(y) ? unknown : round ? Math.round(y) : y; } - function parsePeriod(d, string, i) { - var n = periodRe.exec(string.slice(i)); - return n ? (d.p = periodLookup[n[0].toLowerCase()], i + n[0].length) : -1; - } + scale.invert = function(y) { + return squared.invert(square$1(y)); + }; - function parseShortWeekday(d, string, i) { - var n = shortWeekdayRe.exec(string.slice(i)); - return n ? (d.w = shortWeekdayLookup[n[0].toLowerCase()], i + n[0].length) : -1; - } + scale.domain = function(_) { + return arguments.length ? (squared.domain(_), scale) : squared.domain(); + }; - function parseWeekday(d, string, i) { - var n = weekdayRe.exec(string.slice(i)); - return n ? (d.w = weekdayLookup[n[0].toLowerCase()], i + n[0].length) : -1; - } + scale.range = function(_) { + return arguments.length ? (squared.range((range = Array.from(_, number$1)).map(square$1)), scale) : range.slice(); + }; - function parseShortMonth(d, string, i) { - var n = shortMonthRe.exec(string.slice(i)); - return n ? (d.m = shortMonthLookup[n[0].toLowerCase()], i + n[0].length) : -1; - } + scale.rangeRound = function(_) { + return scale.range(_).round(true); + }; - function parseMonth(d, string, i) { - var n = monthRe.exec(string.slice(i)); - return n ? (d.m = monthLookup[n[0].toLowerCase()], i + n[0].length) : -1; - } + scale.round = function(_) { + return arguments.length ? (round = !!_, scale) : round; + }; - function parseLocaleDateTime(d, string, i) { - return parseSpecifier(d, locale_dateTime, string, i); - } + scale.clamp = function(_) { + return arguments.length ? (squared.clamp(_), scale) : squared.clamp(); + }; - function parseLocaleDate(d, string, i) { - return parseSpecifier(d, locale_date, string, i); - } + scale.unknown = function(_) { + return arguments.length ? (unknown = _, scale) : unknown; + }; - function parseLocaleTime(d, string, i) { - return parseSpecifier(d, locale_time, string, i); - } + scale.copy = function() { + return radial(squared.domain(), range) + .round(round) + .clamp(squared.clamp()) + .unknown(unknown); + }; - function formatShortWeekday(d) { - return locale_shortWeekdays[d.getDay()]; - } + initRange.apply(scale, arguments); - function formatWeekday(d) { - return locale_weekdays[d.getDay()]; - } + return linearish(scale); +} - function formatShortMonth(d) { - return locale_shortMonths[d.getMonth()]; +function quantile() { + var domain = [], + range = [], + thresholds = [], + unknown; + + function rescale() { + var i = 0, n = Math.max(1, range.length); + thresholds = new Array(n - 1); + while (++i < n) thresholds[i - 1] = quantileSorted(domain, i / n); + return scale; } - function formatMonth(d) { - return locale_months[d.getMonth()]; + function scale(x) { + return x == null || isNaN(x = +x) ? unknown : range[bisectRight(thresholds, x)]; } - function formatPeriod(d) { - return locale_periods[+(d.getHours() >= 12)]; - } + scale.invertExtent = function(y) { + var i = range.indexOf(y); + return i < 0 ? [NaN, NaN] : [ + i > 0 ? thresholds[i - 1] : domain[0], + i < thresholds.length ? thresholds[i] : domain[domain.length - 1] + ]; + }; + + scale.domain = function(_) { + if (!arguments.length) return domain.slice(); + domain = []; + for (let d of _) if (d != null && !isNaN(d = +d)) domain.push(d); + domain.sort(ascending$3); + return rescale(); + }; + + scale.range = function(_) { + return arguments.length ? (range = Array.from(_), rescale()) : range.slice(); + }; - function formatQuarter(d) { - return 1 + ~~(d.getMonth() / 3); - } + scale.unknown = function(_) { + return arguments.length ? (unknown = _, scale) : unknown; + }; - function formatUTCShortWeekday(d) { - return locale_shortWeekdays[d.getUTCDay()]; - } + scale.quantiles = function() { + return thresholds.slice(); + }; - function formatUTCWeekday(d) { - return locale_weekdays[d.getUTCDay()]; - } + scale.copy = function() { + return quantile() + .domain(domain) + .range(range) + .unknown(unknown); + }; - function formatUTCShortMonth(d) { - return locale_shortMonths[d.getUTCMonth()]; - } + return initRange.apply(scale, arguments); +} - function formatUTCMonth(d) { - return locale_months[d.getUTCMonth()]; - } +function quantize() { + var x0 = 0, + x1 = 1, + n = 1, + domain = [0.5], + range = [0, 1], + unknown; - function formatUTCPeriod(d) { - return locale_periods[+(d.getUTCHours() >= 12)]; + function scale(x) { + return x != null && x <= x ? range[bisectRight(domain, x, 0, n)] : unknown; } - function formatUTCQuarter(d) { - return 1 + ~~(d.getUTCMonth() / 3); + function rescale() { + var i = -1; + domain = new Array(n); + while (++i < n) domain[i] = ((i + 1) * x1 - (i - n) * x0) / (n + 1); + return scale; } - return { - format: function(specifier) { - var f = newFormat(specifier += "", formats); - f.toString = function() { return specifier; }; - return f; - }, - parse: function(specifier) { - var p = newParse(specifier += "", false); - p.toString = function() { return specifier; }; - return p; - }, - utcFormat: function(specifier) { - var f = newFormat(specifier += "", utcFormats); - f.toString = function() { return specifier; }; - return f; - }, - utcParse: function(specifier) { - var p = newParse(specifier += "", true); - p.toString = function() { return specifier; }; - return p; - } + scale.domain = function(_) { + return arguments.length ? ([x0, x1] = _, x0 = +x0, x1 = +x1, rescale()) : [x0, x1]; }; -} - -var pads = {"-": "", "_": " ", "0": "0"}, - numberRe = /^\s*\d+/, // note: ignores next directive - percentRe = /^%/, - requoteRe = /[\\^$*+?|[\]().{}]/g; - -function pad$1(value, fill, width) { - var sign = value < 0 ? "-" : "", - string = (sign ? -value : value) + "", - length = string.length; - return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string); -} -function requote(s) { - return s.replace(requoteRe, "\\$&"); -} + scale.range = function(_) { + return arguments.length ? (n = (range = Array.from(_)).length - 1, rescale()) : range.slice(); + }; -function formatRe(names) { - return new RegExp("^(?:" + names.map(requote).join("|") + ")", "i"); -} + scale.invertExtent = function(y) { + var i = range.indexOf(y); + return i < 0 ? [NaN, NaN] + : i < 1 ? [x0, domain[0]] + : i >= n ? [domain[n - 1], x1] + : [domain[i - 1], domain[i]]; + }; -function formatLookup(names) { - var map = {}, i = -1, n = names.length; - while (++i < n) map[names[i].toLowerCase()] = i; - return map; -} + scale.unknown = function(_) { + return arguments.length ? (unknown = _, scale) : scale; + }; -function parseWeekdayNumberSunday(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 1)); - return n ? (d.w = +n[0], i + n[0].length) : -1; -} + scale.thresholds = function() { + return domain.slice(); + }; -function parseWeekdayNumberMonday(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 1)); - return n ? (d.u = +n[0], i + n[0].length) : -1; -} + scale.copy = function() { + return quantize() + .domain([x0, x1]) + .range(range) + .unknown(unknown); + }; -function parseWeekNumberSunday(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.U = +n[0], i + n[0].length) : -1; + return initRange.apply(linearish(scale), arguments); } -function parseWeekNumberISO(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.V = +n[0], i + n[0].length) : -1; -} +function threshold() { + var domain = [0.5], + range = [0, 1], + unknown, + n = 1; -function parseWeekNumberMonday(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.W = +n[0], i + n[0].length) : -1; -} + function scale(x) { + return x != null && x <= x ? range[bisectRight(domain, x, 0, n)] : unknown; + } -function parseFullYear(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 4)); - return n ? (d.y = +n[0], i + n[0].length) : -1; -} + scale.domain = function(_) { + return arguments.length ? (domain = Array.from(_), n = Math.min(domain.length, range.length - 1), scale) : domain.slice(); + }; -function parseYear(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.y = +n[0] + (+n[0] > 68 ? 1900 : 2000), i + n[0].length) : -1; -} + scale.range = function(_) { + return arguments.length ? (range = Array.from(_), n = Math.min(domain.length, range.length - 1), scale) : range.slice(); + }; -function parseZone(d, string, i) { - var n = /^(Z)|([+-]\d\d)(?::?(\d\d))?/.exec(string.slice(i, i + 6)); - return n ? (d.Z = n[1] ? 0 : -(n[2] + (n[3] || "00")), i + n[0].length) : -1; -} + scale.invertExtent = function(y) { + var i = range.indexOf(y); + return [domain[i - 1], domain[i]]; + }; -function parseQuarter(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 1)); - return n ? (d.q = n[0] * 3 - 3, i + n[0].length) : -1; -} + scale.unknown = function(_) { + return arguments.length ? (unknown = _, scale) : unknown; + }; -function parseMonthNumber(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.m = n[0] - 1, i + n[0].length) : -1; -} + scale.copy = function() { + return threshold() + .domain(domain) + .range(range) + .unknown(unknown); + }; -function parseDayOfMonth(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.d = +n[0], i + n[0].length) : -1; + return initRange.apply(scale, arguments); } -function parseDayOfYear(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 3)); - return n ? (d.m = 0, d.d = +n[0], i + n[0].length) : -1; -} +var t0 = new Date, + t1 = new Date; -function parseHour24(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.H = +n[0], i + n[0].length) : -1; -} +function newInterval(floori, offseti, count, field) { -function parseMinutes(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.M = +n[0], i + n[0].length) : -1; -} + function interval(date) { + return floori(date = arguments.length === 0 ? new Date : new Date(+date)), date; + } -function parseSeconds(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 2)); - return n ? (d.S = +n[0], i + n[0].length) : -1; -} + interval.floor = function(date) { + return floori(date = new Date(+date)), date; + }; -function parseMilliseconds(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 3)); - return n ? (d.L = +n[0], i + n[0].length) : -1; -} + interval.ceil = function(date) { + return floori(date = new Date(date - 1)), offseti(date, 1), floori(date), date; + }; -function parseMicroseconds(d, string, i) { - var n = numberRe.exec(string.slice(i, i + 6)); - return n ? (d.L = Math.floor(n[0] / 1000), i + n[0].length) : -1; -} + interval.round = function(date) { + var d0 = interval(date), + d1 = interval.ceil(date); + return date - d0 < d1 - date ? d0 : d1; + }; -function parseLiteralPercent(d, string, i) { - var n = percentRe.exec(string.slice(i, i + 1)); - return n ? i + n[0].length : -1; -} + interval.offset = function(date, step) { + return offseti(date = new Date(+date), step == null ? 1 : Math.floor(step)), date; + }; -function parseUnixTimestamp(d, string, i) { - var n = numberRe.exec(string.slice(i)); - return n ? (d.Q = +n[0], i + n[0].length) : -1; -} + interval.range = function(start, stop, step) { + var range = [], previous; + start = interval.ceil(start); + step = step == null ? 1 : Math.floor(step); + if (!(start < stop) || !(step > 0)) return range; // also handles Invalid Date + do range.push(previous = new Date(+start)), offseti(start, step), floori(start); + while (previous < start && start < stop); + return range; + }; -function parseUnixTimestampSeconds(d, string, i) { - var n = numberRe.exec(string.slice(i)); - return n ? (d.s = +n[0], i + n[0].length) : -1; -} + interval.filter = function(test) { + return newInterval(function(date) { + if (date >= date) while (floori(date), !test(date)) date.setTime(date - 1); + }, function(date, step) { + if (date >= date) { + if (step < 0) while (++step <= 0) { + while (offseti(date, -1), !test(date)) {} // eslint-disable-line no-empty + } else while (--step >= 0) { + while (offseti(date, +1), !test(date)) {} // eslint-disable-line no-empty + } + } + }); + }; -function formatDayOfMonth(d, p) { - return pad$1(d.getDate(), p, 2); -} + if (count) { + interval.count = function(start, end) { + t0.setTime(+start), t1.setTime(+end); + floori(t0), floori(t1); + return Math.floor(count(t0, t1)); + }; -function formatHour24(d, p) { - return pad$1(d.getHours(), p, 2); -} + interval.every = function(step) { + step = Math.floor(step); + return !isFinite(step) || !(step > 0) ? null + : !(step > 1) ? interval + : interval.filter(field + ? function(d) { return field(d) % step === 0; } + : function(d) { return interval.count(0, d) % step === 0; }); + }; + } -function formatHour12(d, p) { - return pad$1(d.getHours() % 12 || 12, p, 2); + return interval; } -function formatDayOfYear(d, p) { - return pad$1(1 + day.count(year(d), d), p, 3); -} +var millisecond = newInterval(function() { + // noop +}, function(date, step) { + date.setTime(+date + step); +}, function(start, end) { + return end - start; +}); -function formatMilliseconds(d, p) { - return pad$1(d.getMilliseconds(), p, 3); -} +// An optimized implementation for this simple case. +millisecond.every = function(k) { + k = Math.floor(k); + if (!isFinite(k) || !(k > 0)) return null; + if (!(k > 1)) return millisecond; + return newInterval(function(date) { + date.setTime(Math.floor(date / k) * k); + }, function(date, step) { + date.setTime(+date + step * k); + }, function(start, end) { + return (end - start) / k; + }); +}; +var milliseconds = millisecond.range; -function formatMicroseconds(d, p) { - return formatMilliseconds(d, p) + "000"; -} +var durationSecond$1 = 1e3; +var durationMinute$1 = 6e4; +var durationHour$1 = 36e5; +var durationDay$1 = 864e5; +var durationWeek$1 = 6048e5; -function formatMonthNumber(d, p) { - return pad$1(d.getMonth() + 1, p, 2); -} +var second = newInterval(function(date) { + date.setTime(date - date.getMilliseconds()); +}, function(date, step) { + date.setTime(+date + step * durationSecond$1); +}, function(start, end) { + return (end - start) / durationSecond$1; +}, function(date) { + return date.getUTCSeconds(); +}); +var seconds = second.range; -function formatMinutes(d, p) { - return pad$1(d.getMinutes(), p, 2); -} +var minute = newInterval(function(date) { + date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond$1); +}, function(date, step) { + date.setTime(+date + step * durationMinute$1); +}, function(start, end) { + return (end - start) / durationMinute$1; +}, function(date) { + return date.getMinutes(); +}); +var minutes = minute.range; -function formatSeconds(d, p) { - return pad$1(d.getSeconds(), p, 2); -} +var hour = newInterval(function(date) { + date.setTime(date - date.getMilliseconds() - date.getSeconds() * durationSecond$1 - date.getMinutes() * durationMinute$1); +}, function(date, step) { + date.setTime(+date + step * durationHour$1); +}, function(start, end) { + return (end - start) / durationHour$1; +}, function(date) { + return date.getHours(); +}); +var hours = hour.range; -function formatWeekdayNumberMonday(d) { - var day = d.getDay(); - return day === 0 ? 7 : day; -} +var day = newInterval( + date => date.setHours(0, 0, 0, 0), + (date, step) => date.setDate(date.getDate() + step), + (start, end) => (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute$1) / durationDay$1, + date => date.getDate() - 1 +); +var days = day.range; -function formatWeekNumberSunday(d, p) { - return pad$1(sunday.count(year(d) - 1, d), p, 2); +function weekday(i) { + return newInterval(function(date) { + date.setDate(date.getDate() - (date.getDay() + 7 - i) % 7); + date.setHours(0, 0, 0, 0); + }, function(date, step) { + date.setDate(date.getDate() + step * 7); + }, function(start, end) { + return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute$1) / durationWeek$1; + }); } -function formatWeekNumberISO(d, p) { - var day = d.getDay(); - d = (day >= 4 || day === 0) ? thursday(d) : thursday.ceil(d); - return pad$1(thursday.count(year(d), d) + (year(d).getDay() === 4), p, 2); -} +var sunday = weekday(0); +var monday = weekday(1); +var tuesday = weekday(2); +var wednesday = weekday(3); +var thursday = weekday(4); +var friday = weekday(5); +var saturday = weekday(6); -function formatWeekdayNumberSunday(d) { - return d.getDay(); -} +var sundays = sunday.range; +var mondays = monday.range; +var tuesdays = tuesday.range; +var wednesdays = wednesday.range; +var thursdays = thursday.range; +var fridays = friday.range; +var saturdays = saturday.range; -function formatWeekNumberMonday(d, p) { - return pad$1(monday.count(year(d) - 1, d), p, 2); -} +var month = newInterval(function(date) { + date.setDate(1); + date.setHours(0, 0, 0, 0); +}, function(date, step) { + date.setMonth(date.getMonth() + step); +}, function(start, end) { + return end.getMonth() - start.getMonth() + (end.getFullYear() - start.getFullYear()) * 12; +}, function(date) { + return date.getMonth(); +}); +var months = month.range; -function formatYear$1(d, p) { - return pad$1(d.getFullYear() % 100, p, 2); -} +var year = newInterval(function(date) { + date.setMonth(0, 1); + date.setHours(0, 0, 0, 0); +}, function(date, step) { + date.setFullYear(date.getFullYear() + step); +}, function(start, end) { + return end.getFullYear() - start.getFullYear(); +}, function(date) { + return date.getFullYear(); +}); -function formatFullYear(d, p) { - return pad$1(d.getFullYear() % 10000, p, 4); -} +// An optimized implementation for this simple case. +year.every = function(k) { + return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : newInterval(function(date) { + date.setFullYear(Math.floor(date.getFullYear() / k) * k); + date.setMonth(0, 1); + date.setHours(0, 0, 0, 0); + }, function(date, step) { + date.setFullYear(date.getFullYear() + step * k); + }); +}; +var years = year.range; -function formatZone(d) { - var z = d.getTimezoneOffset(); - return (z > 0 ? "-" : (z *= -1, "+")) - + pad$1(z / 60 | 0, "0", 2) - + pad$1(z % 60, "0", 2); -} +var utcMinute = newInterval(function(date) { + date.setUTCSeconds(0, 0); +}, function(date, step) { + date.setTime(+date + step * durationMinute$1); +}, function(start, end) { + return (end - start) / durationMinute$1; +}, function(date) { + return date.getUTCMinutes(); +}); +var utcMinutes = utcMinute.range; -function formatUTCDayOfMonth(d, p) { - return pad$1(d.getUTCDate(), p, 2); -} +var utcHour = newInterval(function(date) { + date.setUTCMinutes(0, 0, 0); +}, function(date, step) { + date.setTime(+date + step * durationHour$1); +}, function(start, end) { + return (end - start) / durationHour$1; +}, function(date) { + return date.getUTCHours(); +}); +var utcHours = utcHour.range; -function formatUTCHour24(d, p) { - return pad$1(d.getUTCHours(), p, 2); -} +var utcDay = newInterval(function(date) { + date.setUTCHours(0, 0, 0, 0); +}, function(date, step) { + date.setUTCDate(date.getUTCDate() + step); +}, function(start, end) { + return (end - start) / durationDay$1; +}, function(date) { + return date.getUTCDate() - 1; +}); +var utcDays = utcDay.range; -function formatUTCHour12(d, p) { - return pad$1(d.getUTCHours() % 12 || 12, p, 2); +function utcWeekday(i) { + return newInterval(function(date) { + date.setUTCDate(date.getUTCDate() - (date.getUTCDay() + 7 - i) % 7); + date.setUTCHours(0, 0, 0, 0); + }, function(date, step) { + date.setUTCDate(date.getUTCDate() + step * 7); + }, function(start, end) { + return (end - start) / durationWeek$1; + }); } -function formatUTCDayOfYear(d, p) { - return pad$1(1 + utcDay.count(utcYear(d), d), p, 3); -} +var utcSunday = utcWeekday(0); +var utcMonday = utcWeekday(1); +var utcTuesday = utcWeekday(2); +var utcWednesday = utcWeekday(3); +var utcThursday = utcWeekday(4); +var utcFriday = utcWeekday(5); +var utcSaturday = utcWeekday(6); -function formatUTCMilliseconds(d, p) { - return pad$1(d.getUTCMilliseconds(), p, 3); -} +var utcSundays = utcSunday.range; +var utcMondays = utcMonday.range; +var utcTuesdays = utcTuesday.range; +var utcWednesdays = utcWednesday.range; +var utcThursdays = utcThursday.range; +var utcFridays = utcFriday.range; +var utcSaturdays = utcSaturday.range; -function formatUTCMicroseconds(d, p) { - return formatUTCMilliseconds(d, p) + "000"; -} +var utcMonth = newInterval(function(date) { + date.setUTCDate(1); + date.setUTCHours(0, 0, 0, 0); +}, function(date, step) { + date.setUTCMonth(date.getUTCMonth() + step); +}, function(start, end) { + return end.getUTCMonth() - start.getUTCMonth() + (end.getUTCFullYear() - start.getUTCFullYear()) * 12; +}, function(date) { + return date.getUTCMonth(); +}); +var utcMonths = utcMonth.range; -function formatUTCMonthNumber(d, p) { - return pad$1(d.getUTCMonth() + 1, p, 2); -} +var utcYear = newInterval(function(date) { + date.setUTCMonth(0, 1); + date.setUTCHours(0, 0, 0, 0); +}, function(date, step) { + date.setUTCFullYear(date.getUTCFullYear() + step); +}, function(start, end) { + return end.getUTCFullYear() - start.getUTCFullYear(); +}, function(date) { + return date.getUTCFullYear(); +}); -function formatUTCMinutes(d, p) { - return pad$1(d.getUTCMinutes(), p, 2); -} +// An optimized implementation for this simple case. +utcYear.every = function(k) { + return !isFinite(k = Math.floor(k)) || !(k > 0) ? null : newInterval(function(date) { + date.setUTCFullYear(Math.floor(date.getUTCFullYear() / k) * k); + date.setUTCMonth(0, 1); + date.setUTCHours(0, 0, 0, 0); + }, function(date, step) { + date.setUTCFullYear(date.getUTCFullYear() + step * k); + }); +}; +var utcYears = utcYear.range; -function formatUTCSeconds(d, p) { - return pad$1(d.getUTCSeconds(), p, 2); +function localDate(d) { + if (0 <= d.y && d.y < 100) { + var date = new Date(-1, d.m, d.d, d.H, d.M, d.S, d.L); + date.setFullYear(d.y); + return date; + } + return new Date(d.y, d.m, d.d, d.H, d.M, d.S, d.L); } -function formatUTCWeekdayNumberMonday(d) { - var dow = d.getUTCDay(); - return dow === 0 ? 7 : dow; +function utcDate(d) { + if (0 <= d.y && d.y < 100) { + var date = new Date(Date.UTC(-1, d.m, d.d, d.H, d.M, d.S, d.L)); + date.setUTCFullYear(d.y); + return date; + } + return new Date(Date.UTC(d.y, d.m, d.d, d.H, d.M, d.S, d.L)); } -function formatUTCWeekNumberSunday(d, p) { - return pad$1(utcSunday.count(utcYear(d) - 1, d), p, 2); +function newDate(y, m, d) { + return {y: y, m: m, d: d, H: 0, M: 0, S: 0, L: 0}; } -function formatUTCWeekNumberISO(d, p) { - var day = d.getUTCDay(); - d = (day >= 4 || day === 0) ? utcThursday(d) : utcThursday.ceil(d); - return pad$1(utcThursday.count(utcYear(d), d) + (utcYear(d).getUTCDay() === 4), p, 2); -} +function formatLocale(locale) { + var locale_dateTime = locale.dateTime, + locale_date = locale.date, + locale_time = locale.time, + locale_periods = locale.periods, + locale_weekdays = locale.days, + locale_shortWeekdays = locale.shortDays, + locale_months = locale.months, + locale_shortMonths = locale.shortMonths; -function formatUTCWeekdayNumberSunday(d) { - return d.getUTCDay(); -} + var periodRe = formatRe(locale_periods), + periodLookup = formatLookup(locale_periods), + weekdayRe = formatRe(locale_weekdays), + weekdayLookup = formatLookup(locale_weekdays), + shortWeekdayRe = formatRe(locale_shortWeekdays), + shortWeekdayLookup = formatLookup(locale_shortWeekdays), + monthRe = formatRe(locale_months), + monthLookup = formatLookup(locale_months), + shortMonthRe = formatRe(locale_shortMonths), + shortMonthLookup = formatLookup(locale_shortMonths); -function formatUTCWeekNumberMonday(d, p) { - return pad$1(utcMonday.count(utcYear(d) - 1, d), p, 2); -} + var formats = { + "a": formatShortWeekday, + "A": formatWeekday, + "b": formatShortMonth, + "B": formatMonth, + "c": null, + "d": formatDayOfMonth, + "e": formatDayOfMonth, + "f": formatMicroseconds, + "g": formatYearISO, + "G": formatFullYearISO, + "H": formatHour24, + "I": formatHour12, + "j": formatDayOfYear, + "L": formatMilliseconds, + "m": formatMonthNumber, + "M": formatMinutes, + "p": formatPeriod, + "q": formatQuarter, + "Q": formatUnixTimestamp, + "s": formatUnixTimestampSeconds, + "S": formatSeconds, + "u": formatWeekdayNumberMonday, + "U": formatWeekNumberSunday, + "V": formatWeekNumberISO, + "w": formatWeekdayNumberSunday, + "W": formatWeekNumberMonday, + "x": null, + "X": null, + "y": formatYear, + "Y": formatFullYear, + "Z": formatZone, + "%": formatLiteralPercent + }; -function formatUTCYear(d, p) { - return pad$1(d.getUTCFullYear() % 100, p, 2); -} + var utcFormats = { + "a": formatUTCShortWeekday, + "A": formatUTCWeekday, + "b": formatUTCShortMonth, + "B": formatUTCMonth, + "c": null, + "d": formatUTCDayOfMonth, + "e": formatUTCDayOfMonth, + "f": formatUTCMicroseconds, + "g": formatUTCYearISO, + "G": formatUTCFullYearISO, + "H": formatUTCHour24, + "I": formatUTCHour12, + "j": formatUTCDayOfYear, + "L": formatUTCMilliseconds, + "m": formatUTCMonthNumber, + "M": formatUTCMinutes, + "p": formatUTCPeriod, + "q": formatUTCQuarter, + "Q": formatUnixTimestamp, + "s": formatUnixTimestampSeconds, + "S": formatUTCSeconds, + "u": formatUTCWeekdayNumberMonday, + "U": formatUTCWeekNumberSunday, + "V": formatUTCWeekNumberISO, + "w": formatUTCWeekdayNumberSunday, + "W": formatUTCWeekNumberMonday, + "x": null, + "X": null, + "y": formatUTCYear, + "Y": formatUTCFullYear, + "Z": formatUTCZone, + "%": formatLiteralPercent + }; -function formatUTCFullYear(d, p) { - return pad$1(d.getUTCFullYear() % 10000, p, 4); -} + var parses = { + "a": parseShortWeekday, + "A": parseWeekday, + "b": parseShortMonth, + "B": parseMonth, + "c": parseLocaleDateTime, + "d": parseDayOfMonth, + "e": parseDayOfMonth, + "f": parseMicroseconds, + "g": parseYear, + "G": parseFullYear, + "H": parseHour24, + "I": parseHour24, + "j": parseDayOfYear, + "L": parseMilliseconds, + "m": parseMonthNumber, + "M": parseMinutes, + "p": parsePeriod, + "q": parseQuarter, + "Q": parseUnixTimestamp, + "s": parseUnixTimestampSeconds, + "S": parseSeconds, + "u": parseWeekdayNumberMonday, + "U": parseWeekNumberSunday, + "V": parseWeekNumberISO, + "w": parseWeekdayNumberSunday, + "W": parseWeekNumberMonday, + "x": parseLocaleDate, + "X": parseLocaleTime, + "y": parseYear, + "Y": parseFullYear, + "Z": parseZone, + "%": parseLiteralPercent + }; -function formatUTCZone() { - return "+0000"; -} + // These recursive directive definitions must be deferred. + formats.x = newFormat(locale_date, formats); + formats.X = newFormat(locale_time, formats); + formats.c = newFormat(locale_dateTime, formats); + utcFormats.x = newFormat(locale_date, utcFormats); + utcFormats.X = newFormat(locale_time, utcFormats); + utcFormats.c = newFormat(locale_dateTime, utcFormats); -function formatLiteralPercent() { - return "%"; -} + function newFormat(specifier, formats) { + return function(date) { + var string = [], + i = -1, + j = 0, + n = specifier.length, + c, + pad, + format; -function formatUnixTimestamp(d) { - return +d; -} + if (!(date instanceof Date)) date = new Date(+date); -function formatUnixTimestampSeconds(d) { - return Math.floor(+d / 1000); -} + while (++i < n) { + if (specifier.charCodeAt(i) === 37) { + string.push(specifier.slice(j, i)); + if ((pad = pads[c = specifier.charAt(++i)]) != null) c = specifier.charAt(++i); + else pad = c === "e" ? " " : "0"; + if (format = formats[c]) c = format(date, pad); + string.push(c); + j = i + 1; + } + } -var locale$1; + string.push(specifier.slice(j, i)); + return string.join(""); + }; + } -defaultLocale$1({ - dateTime: "%x, %X", - date: "%-m/%-d/%Y", - time: "%-I:%M:%S %p", - periods: ["AM", "PM"], - days: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"], - shortDays: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"], - months: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"], - shortMonths: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"] -}); + function newParse(specifier, Z) { + return function(string) { + var d = newDate(1900, undefined, 1), + i = parseSpecifier(d, specifier, string += "", 0), + week, day$1; + if (i != string.length) return null; -function defaultLocale$1(definition) { - locale$1 = formatLocale$1(definition); - exports.timeFormat = locale$1.format; - exports.timeParse = locale$1.parse; - exports.utcFormat = locale$1.utcFormat; - exports.utcParse = locale$1.utcParse; - return locale$1; -} + // If a UNIX timestamp is specified, return it. + if ("Q" in d) return new Date(d.Q); + if ("s" in d) return new Date(d.s * 1000 + ("L" in d ? d.L : 0)); -var isoSpecifier = "%Y-%m-%dT%H:%M:%S.%LZ"; + // If this is utcParse, never use the local timezone. + if (Z && !("Z" in d)) d.Z = 0; -function formatIsoNative(date) { - return date.toISOString(); -} + // The am-pm flag is 0 for AM, and 1 for PM. + if ("p" in d) d.H = d.H % 12 + d.p * 12; -var formatIso = Date.prototype.toISOString - ? formatIsoNative - : exports.utcFormat(isoSpecifier); + // If the month was not specified, inherit from the quarter. + if (d.m === undefined) d.m = "q" in d ? d.q : 0; -function parseIsoNative(string) { - var date = new Date(string); - return isNaN(date) ? null : date; -} + // Convert day-of-week and week-of-year to day-of-year. + if ("V" in d) { + if (d.V < 1 || d.V > 53) return null; + if (!("w" in d)) d.w = 1; + if ("Z" in d) { + week = utcDate(newDate(d.y, 0, 1)), day$1 = week.getUTCDay(); + week = day$1 > 4 || day$1 === 0 ? utcMonday.ceil(week) : utcMonday(week); + week = utcDay.offset(week, (d.V - 1) * 7); + d.y = week.getUTCFullYear(); + d.m = week.getUTCMonth(); + d.d = week.getUTCDate() + (d.w + 6) % 7; + } else { + week = localDate(newDate(d.y, 0, 1)), day$1 = week.getDay(); + week = day$1 > 4 || day$1 === 0 ? monday.ceil(week) : monday(week); + week = day.offset(week, (d.V - 1) * 7); + d.y = week.getFullYear(); + d.m = week.getMonth(); + d.d = week.getDate() + (d.w + 6) % 7; + } + } else if ("W" in d || "U" in d) { + if (!("w" in d)) d.w = "u" in d ? d.u % 7 : "W" in d ? 1 : 0; + day$1 = "Z" in d ? utcDate(newDate(d.y, 0, 1)).getUTCDay() : localDate(newDate(d.y, 0, 1)).getDay(); + d.m = 0; + d.d = "W" in d ? (d.w + 6) % 7 + d.W * 7 - (day$1 + 5) % 7 : d.w + d.U * 7 - (day$1 + 6) % 7; + } + + // If a time zone is specified, all fields are interpreted as UTC and then + // offset according to the specified time zone. + if ("Z" in d) { + d.H += d.Z / 100 | 0; + d.M += d.Z % 100; + return utcDate(d); + } -var parseIso = +new Date("2000-01-01T00:00:00.000Z") - ? parseIsoNative - : exports.utcParse(isoSpecifier); + // Otherwise, all fields are in local time. + return localDate(d); + }; + } -var durationSecond$1 = 1000, - durationMinute$1 = durationSecond$1 * 60, - durationHour$1 = durationMinute$1 * 60, - durationDay$1 = durationHour$1 * 24, - durationWeek$1 = durationDay$1 * 7, - durationMonth = durationDay$1 * 30, - durationYear = durationDay$1 * 365; + function parseSpecifier(d, specifier, string, j) { + var i = 0, + n = specifier.length, + m = string.length, + c, + parse; -function date$1(t) { - return new Date(t); -} + while (i < n) { + if (j >= m) return -1; + c = specifier.charCodeAt(i++); + if (c === 37) { + c = specifier.charAt(i++); + parse = parses[c in pads ? specifier.charAt(i++) : c]; + if (!parse || ((j = parse(d, string, j)) < 0)) return -1; + } else if (c != string.charCodeAt(j++)) { + return -1; + } + } -function number$3(t) { - return t instanceof Date ? +t : +new Date(+t); -} + return j; + } -function calendar(year, month, week, day, hour, minute, second, millisecond, format) { - var scale = continuous(identity$6, identity$6), - invert = scale.invert, - domain = scale.domain; + function parsePeriod(d, string, i) { + var n = periodRe.exec(string.slice(i)); + return n ? (d.p = periodLookup.get(n[0].toLowerCase()), i + n[0].length) : -1; + } - var formatMillisecond = format(".%L"), - formatSecond = format(":%S"), - formatMinute = format("%I:%M"), - formatHour = format("%I %p"), - formatDay = format("%a %d"), - formatWeek = format("%b %d"), - formatMonth = format("%B"), - formatYear = format("%Y"); + function parseShortWeekday(d, string, i) { + var n = shortWeekdayRe.exec(string.slice(i)); + return n ? (d.w = shortWeekdayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1; + } - var tickIntervals = [ - [second, 1, durationSecond$1], - [second, 5, 5 * durationSecond$1], - [second, 15, 15 * durationSecond$1], - [second, 30, 30 * durationSecond$1], - [minute, 1, durationMinute$1], - [minute, 5, 5 * durationMinute$1], - [minute, 15, 15 * durationMinute$1], - [minute, 30, 30 * durationMinute$1], - [ hour, 1, durationHour$1 ], - [ hour, 3, 3 * durationHour$1 ], - [ hour, 6, 6 * durationHour$1 ], - [ hour, 12, 12 * durationHour$1 ], - [ day, 1, durationDay$1 ], - [ day, 2, 2 * durationDay$1 ], - [ week, 1, durationWeek$1 ], - [ month, 1, durationMonth ], - [ month, 3, 3 * durationMonth ], - [ year, 1, durationYear ] - ]; + function parseWeekday(d, string, i) { + var n = weekdayRe.exec(string.slice(i)); + return n ? (d.w = weekdayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1; + } - function tickFormat(date) { - return (second(date) < date ? formatMillisecond - : minute(date) < date ? formatSecond - : hour(date) < date ? formatMinute - : day(date) < date ? formatHour - : month(date) < date ? (week(date) < date ? formatDay : formatWeek) - : year(date) < date ? formatMonth - : formatYear)(date); + function parseShortMonth(d, string, i) { + var n = shortMonthRe.exec(string.slice(i)); + return n ? (d.m = shortMonthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1; } - function tickInterval(interval, start, stop, step) { - if (interval == null) interval = 10; + function parseMonth(d, string, i) { + var n = monthRe.exec(string.slice(i)); + return n ? (d.m = monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1; + } - // If a desired tick count is specified, pick a reasonable tick interval - // based on the extent of the domain and a rough estimate of tick size. - // Otherwise, assume interval is already a time interval and use it. - if (typeof interval === "number") { - var target = Math.abs(stop - start) / interval, - i = bisector(function(i) { return i[2]; }).right(tickIntervals, target); - if (i === tickIntervals.length) { - step = tickStep(start / durationYear, stop / durationYear, interval); - interval = year; - } else if (i) { - i = tickIntervals[target / tickIntervals[i - 1][2] < tickIntervals[i][2] / target ? i - 1 : i]; - step = i[1]; - interval = i[0]; - } else { - step = Math.max(tickStep(start, stop, interval), 1); - interval = millisecond; - } - } + function parseLocaleDateTime(d, string, i) { + return parseSpecifier(d, locale_dateTime, string, i); + } - return step == null ? interval : interval.every(step); + function parseLocaleDate(d, string, i) { + return parseSpecifier(d, locale_date, string, i); } - scale.invert = function(y) { - return new Date(invert(y)); - }; + function parseLocaleTime(d, string, i) { + return parseSpecifier(d, locale_time, string, i); + } - scale.domain = function(_) { - return arguments.length ? domain(map$3.call(_, number$3)) : domain().map(date$1); - }; + function formatShortWeekday(d) { + return locale_shortWeekdays[d.getDay()]; + } - scale.ticks = function(interval, step) { - var d = domain(), - t0 = d[0], - t1 = d[d.length - 1], - r = t1 < t0, - t; - if (r) t = t0, t0 = t1, t1 = t; - t = tickInterval(interval, t0, t1, step); - t = t ? t.range(t0, t1 + 1) : []; // inclusive stop - return r ? t.reverse() : t; - }; + function formatWeekday(d) { + return locale_weekdays[d.getDay()]; + } - scale.tickFormat = function(count, specifier) { - return specifier == null ? tickFormat : format(specifier); - }; + function formatShortMonth(d) { + return locale_shortMonths[d.getMonth()]; + } - scale.nice = function(interval, step) { - var d = domain(); - return (interval = tickInterval(interval, d[0], d[d.length - 1], step)) - ? domain(nice(d, interval)) - : scale; - }; + function formatMonth(d) { + return locale_months[d.getMonth()]; + } - scale.copy = function() { - return copy(scale, calendar(year, month, week, day, hour, minute, second, millisecond, format)); - }; + function formatPeriod(d) { + return locale_periods[+(d.getHours() >= 12)]; + } - return scale; -} + function formatQuarter(d) { + return 1 + ~~(d.getMonth() / 3); + } -function time() { - return initRange.apply(calendar(year, month, sunday, day, hour, minute, second, millisecond, exports.timeFormat).domain([new Date(2000, 0, 1), new Date(2000, 0, 2)]), arguments); -} + function formatUTCShortWeekday(d) { + return locale_shortWeekdays[d.getUTCDay()]; + } -function utcTime() { - return initRange.apply(calendar(utcYear, utcMonth, utcSunday, utcDay, utcHour, utcMinute, second, millisecond, exports.utcFormat).domain([Date.UTC(2000, 0, 1), Date.UTC(2000, 0, 2)]), arguments); -} + function formatUTCWeekday(d) { + return locale_weekdays[d.getUTCDay()]; + } -function transformer$2() { - var x0 = 0, - x1 = 1, - t0, - t1, - k10, - transform, - interpolator = identity$6, - clamp = false, - unknown; + function formatUTCShortMonth(d) { + return locale_shortMonths[d.getUTCMonth()]; + } - function scale(x) { - return isNaN(x = +x) ? unknown : interpolator(k10 === 0 ? 0.5 : (x = (transform(x) - t0) * k10, clamp ? Math.max(0, Math.min(1, x)) : x)); + function formatUTCMonth(d) { + return locale_months[d.getUTCMonth()]; } - scale.domain = function(_) { - return arguments.length ? (t0 = transform(x0 = +_[0]), t1 = transform(x1 = +_[1]), k10 = t0 === t1 ? 0 : 1 / (t1 - t0), scale) : [x0, x1]; - }; + function formatUTCPeriod(d) { + return locale_periods[+(d.getUTCHours() >= 12)]; + } - scale.clamp = function(_) { - return arguments.length ? (clamp = !!_, scale) : clamp; - }; + function formatUTCQuarter(d) { + return 1 + ~~(d.getUTCMonth() / 3); + } - scale.interpolator = function(_) { - return arguments.length ? (interpolator = _, scale) : interpolator; + return { + format: function(specifier) { + var f = newFormat(specifier += "", formats); + f.toString = function() { return specifier; }; + return f; + }, + parse: function(specifier) { + var p = newParse(specifier += "", false); + p.toString = function() { return specifier; }; + return p; + }, + utcFormat: function(specifier) { + var f = newFormat(specifier += "", utcFormats); + f.toString = function() { return specifier; }; + return f; + }, + utcParse: function(specifier) { + var p = newParse(specifier += "", true); + p.toString = function() { return specifier; }; + return p; + } }; +} - scale.unknown = function(_) { - return arguments.length ? (unknown = _, scale) : unknown; - }; +var pads = {"-": "", "_": " ", "0": "0"}, + numberRe = /^\s*\d+/, // note: ignores next directive + percentRe = /^%/, + requoteRe = /[\\^$*+?|[\]().{}]/g; - return function(t) { - transform = t, t0 = t(x0), t1 = t(x1), k10 = t0 === t1 ? 0 : 1 / (t1 - t0); - return scale; - }; +function pad(value, fill, width) { + var sign = value < 0 ? "-" : "", + string = (sign ? -value : value) + "", + length = string.length; + return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string); } -function copy$1(source, target) { - return target - .domain(source.domain()) - .interpolator(source.interpolator()) - .clamp(source.clamp()) - .unknown(source.unknown()); +function requote(s) { + return s.replace(requoteRe, "\\$&"); } -function sequential() { - var scale = linearish(transformer$2()(identity$6)); - - scale.copy = function() { - return copy$1(scale, sequential()); - }; - - return initInterpolator.apply(scale, arguments); +function formatRe(names) { + return new RegExp("^(?:" + names.map(requote).join("|") + ")", "i"); } -function sequentialLog() { - var scale = loggish(transformer$2()).domain([1, 10]); - - scale.copy = function() { - return copy$1(scale, sequentialLog()).base(scale.base()); - }; +function formatLookup(names) { + return new Map(names.map((name, i) => [name.toLowerCase(), i])); +} - return initInterpolator.apply(scale, arguments); +function parseWeekdayNumberSunday(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 1)); + return n ? (d.w = +n[0], i + n[0].length) : -1; } -function sequentialSymlog() { - var scale = symlogish(transformer$2()); +function parseWeekdayNumberMonday(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 1)); + return n ? (d.u = +n[0], i + n[0].length) : -1; +} - scale.copy = function() { - return copy$1(scale, sequentialSymlog()).constant(scale.constant()); - }; +function parseWeekNumberSunday(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.U = +n[0], i + n[0].length) : -1; +} - return initInterpolator.apply(scale, arguments); +function parseWeekNumberISO(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.V = +n[0], i + n[0].length) : -1; } -function sequentialPow() { - var scale = powish(transformer$2()); +function parseWeekNumberMonday(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.W = +n[0], i + n[0].length) : -1; +} - scale.copy = function() { - return copy$1(scale, sequentialPow()).exponent(scale.exponent()); - }; +function parseFullYear(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 4)); + return n ? (d.y = +n[0], i + n[0].length) : -1; +} - return initInterpolator.apply(scale, arguments); +function parseYear(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.y = +n[0] + (+n[0] > 68 ? 1900 : 2000), i + n[0].length) : -1; } -function sequentialSqrt() { - return sequentialPow.apply(null, arguments).exponent(0.5); +function parseZone(d, string, i) { + var n = /^(Z)|([+-]\d\d)(?::?(\d\d))?/.exec(string.slice(i, i + 6)); + return n ? (d.Z = n[1] ? 0 : -(n[2] + (n[3] || "00")), i + n[0].length) : -1; } -function sequentialQuantile() { - var domain = [], - interpolator = identity$6; +function parseQuarter(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 1)); + return n ? (d.q = n[0] * 3 - 3, i + n[0].length) : -1; +} - function scale(x) { - if (!isNaN(x = +x)) return interpolator((bisectRight(domain, x) - 1) / (domain.length - 1)); - } +function parseMonthNumber(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.m = n[0] - 1, i + n[0].length) : -1; +} - scale.domain = function(_) { - if (!arguments.length) return domain.slice(); - domain = []; - for (var i = 0, n = _.length, d; i < n; ++i) if (d = _[i], d != null && !isNaN(d = +d)) domain.push(d); - domain.sort(ascending); - return scale; - }; +function parseDayOfMonth(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.d = +n[0], i + n[0].length) : -1; +} - scale.interpolator = function(_) { - return arguments.length ? (interpolator = _, scale) : interpolator; - }; +function parseDayOfYear(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 3)); + return n ? (d.m = 0, d.d = +n[0], i + n[0].length) : -1; +} - scale.copy = function() { - return sequentialQuantile(interpolator).domain(domain); - }; +function parseHour24(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.H = +n[0], i + n[0].length) : -1; +} - return initInterpolator.apply(scale, arguments); +function parseMinutes(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.M = +n[0], i + n[0].length) : -1; } -function transformer$3() { - var x0 = 0, - x1 = 0.5, - x2 = 1, - t0, - t1, - t2, - k10, - k21, - interpolator = identity$6, - transform, - clamp = false, - unknown; +function parseSeconds(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 2)); + return n ? (d.S = +n[0], i + n[0].length) : -1; +} - function scale(x) { - return isNaN(x = +x) ? unknown : (x = 0.5 + ((x = +transform(x)) - t1) * (x < t1 ? k10 : k21), interpolator(clamp ? Math.max(0, Math.min(1, x)) : x)); - } +function parseMilliseconds(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 3)); + return n ? (d.L = +n[0], i + n[0].length) : -1; +} - scale.domain = function(_) { - return arguments.length ? (t0 = transform(x0 = +_[0]), t1 = transform(x1 = +_[1]), t2 = transform(x2 = +_[2]), k10 = t0 === t1 ? 0 : 0.5 / (t1 - t0), k21 = t1 === t2 ? 0 : 0.5 / (t2 - t1), scale) : [x0, x1, x2]; - }; +function parseMicroseconds(d, string, i) { + var n = numberRe.exec(string.slice(i, i + 6)); + return n ? (d.L = Math.floor(n[0] / 1000), i + n[0].length) : -1; +} - scale.clamp = function(_) { - return arguments.length ? (clamp = !!_, scale) : clamp; - }; +function parseLiteralPercent(d, string, i) { + var n = percentRe.exec(string.slice(i, i + 1)); + return n ? i + n[0].length : -1; +} - scale.interpolator = function(_) { - return arguments.length ? (interpolator = _, scale) : interpolator; - }; +function parseUnixTimestamp(d, string, i) { + var n = numberRe.exec(string.slice(i)); + return n ? (d.Q = +n[0], i + n[0].length) : -1; +} - scale.unknown = function(_) { - return arguments.length ? (unknown = _, scale) : unknown; - }; +function parseUnixTimestampSeconds(d, string, i) { + var n = numberRe.exec(string.slice(i)); + return n ? (d.s = +n[0], i + n[0].length) : -1; +} - return function(t) { - transform = t, t0 = t(x0), t1 = t(x1), t2 = t(x2), k10 = t0 === t1 ? 0 : 0.5 / (t1 - t0), k21 = t1 === t2 ? 0 : 0.5 / (t2 - t1); - return scale; - }; +function formatDayOfMonth(d, p) { + return pad(d.getDate(), p, 2); } -function diverging() { - var scale = linearish(transformer$3()(identity$6)); +function formatHour24(d, p) { + return pad(d.getHours(), p, 2); +} - scale.copy = function() { - return copy$1(scale, diverging()); - }; +function formatHour12(d, p) { + return pad(d.getHours() % 12 || 12, p, 2); +} - return initInterpolator.apply(scale, arguments); +function formatDayOfYear(d, p) { + return pad(1 + day.count(year(d), d), p, 3); } -function divergingLog() { - var scale = loggish(transformer$3()).domain([0.1, 1, 10]); +function formatMilliseconds(d, p) { + return pad(d.getMilliseconds(), p, 3); +} - scale.copy = function() { - return copy$1(scale, divergingLog()).base(scale.base()); - }; +function formatMicroseconds(d, p) { + return formatMilliseconds(d, p) + "000"; +} - return initInterpolator.apply(scale, arguments); +function formatMonthNumber(d, p) { + return pad(d.getMonth() + 1, p, 2); } -function divergingSymlog() { - var scale = symlogish(transformer$3()); +function formatMinutes(d, p) { + return pad(d.getMinutes(), p, 2); +} - scale.copy = function() { - return copy$1(scale, divergingSymlog()).constant(scale.constant()); - }; +function formatSeconds(d, p) { + return pad(d.getSeconds(), p, 2); +} - return initInterpolator.apply(scale, arguments); +function formatWeekdayNumberMonday(d) { + var day = d.getDay(); + return day === 0 ? 7 : day; } -function divergingPow() { - var scale = powish(transformer$3()); +function formatWeekNumberSunday(d, p) { + return pad(sunday.count(year(d) - 1, d), p, 2); +} - scale.copy = function() { - return copy$1(scale, divergingPow()).exponent(scale.exponent()); - }; +function dISO(d) { + var day = d.getDay(); + return (day >= 4 || day === 0) ? thursday(d) : thursday.ceil(d); +} - return initInterpolator.apply(scale, arguments); +function formatWeekNumberISO(d, p) { + d = dISO(d); + return pad(thursday.count(year(d), d) + (year(d).getDay() === 4), p, 2); } -function divergingSqrt() { - return divergingPow.apply(null, arguments).exponent(0.5); +function formatWeekdayNumberSunday(d) { + return d.getDay(); } -function colors(specifier) { - var n = specifier.length / 6 | 0, colors = new Array(n), i = 0; - while (i < n) colors[i] = "#" + specifier.slice(i * 6, ++i * 6); - return colors; +function formatWeekNumberMonday(d, p) { + return pad(monday.count(year(d) - 1, d), p, 2); } -var category10 = colors("1f77b4ff7f0e2ca02cd627289467bd8c564be377c27f7f7fbcbd2217becf"); +function formatYear(d, p) { + return pad(d.getFullYear() % 100, p, 2); +} -var Accent = colors("7fc97fbeaed4fdc086ffff99386cb0f0027fbf5b17666666"); +function formatYearISO(d, p) { + d = dISO(d); + return pad(d.getFullYear() % 100, p, 2); +} -var Dark2 = colors("1b9e77d95f027570b3e7298a66a61ee6ab02a6761d666666"); +function formatFullYear(d, p) { + return pad(d.getFullYear() % 10000, p, 4); +} -var Paired = colors("a6cee31f78b4b2df8a33a02cfb9a99e31a1cfdbf6fff7f00cab2d66a3d9affff99b15928"); +function formatFullYearISO(d, p) { + var day = d.getDay(); + d = (day >= 4 || day === 0) ? thursday(d) : thursday.ceil(d); + return pad(d.getFullYear() % 10000, p, 4); +} -var Pastel1 = colors("fbb4aeb3cde3ccebc5decbe4fed9a6ffffcce5d8bdfddaecf2f2f2"); +function formatZone(d) { + var z = d.getTimezoneOffset(); + return (z > 0 ? "-" : (z *= -1, "+")) + + pad(z / 60 | 0, "0", 2) + + pad(z % 60, "0", 2); +} -var Pastel2 = colors("b3e2cdfdcdaccbd5e8f4cae4e6f5c9fff2aef1e2cccccccc"); +function formatUTCDayOfMonth(d, p) { + return pad(d.getUTCDate(), p, 2); +} -var Set1 = colors("e41a1c377eb84daf4a984ea3ff7f00ffff33a65628f781bf999999"); +function formatUTCHour24(d, p) { + return pad(d.getUTCHours(), p, 2); +} -var Set2 = colors("66c2a5fc8d628da0cbe78ac3a6d854ffd92fe5c494b3b3b3"); +function formatUTCHour12(d, p) { + return pad(d.getUTCHours() % 12 || 12, p, 2); +} -var Set3 = colors("8dd3c7ffffb3bebadafb807280b1d3fdb462b3de69fccde5d9d9d9bc80bdccebc5ffed6f"); +function formatUTCDayOfYear(d, p) { + return pad(1 + utcDay.count(utcYear(d), d), p, 3); +} -var Tableau10 = colors("4e79a7f28e2ce1575976b7b259a14fedc949af7aa1ff9da79c755fbab0ab"); +function formatUTCMilliseconds(d, p) { + return pad(d.getUTCMilliseconds(), p, 3); +} -function ramp(scheme) { - return rgbBasis(scheme[scheme.length - 1]); +function formatUTCMicroseconds(d, p) { + return formatUTCMilliseconds(d, p) + "000"; } -var scheme = new Array(3).concat( - "d8b365f5f5f55ab4ac", - "a6611adfc27d80cdc1018571", - "a6611adfc27df5f5f580cdc1018571", - "8c510ad8b365f6e8c3c7eae55ab4ac01665e", - "8c510ad8b365f6e8c3f5f5f5c7eae55ab4ac01665e", - "8c510abf812ddfc27df6e8c3c7eae580cdc135978f01665e", - "8c510abf812ddfc27df6e8c3f5f5f5c7eae580cdc135978f01665e", - "5430058c510abf812ddfc27df6e8c3c7eae580cdc135978f01665e003c30", - "5430058c510abf812ddfc27df6e8c3f5f5f5c7eae580cdc135978f01665e003c30" -).map(colors); +function formatUTCMonthNumber(d, p) { + return pad(d.getUTCMonth() + 1, p, 2); +} -var BrBG = ramp(scheme); +function formatUTCMinutes(d, p) { + return pad(d.getUTCMinutes(), p, 2); +} -var scheme$1 = new Array(3).concat( - "af8dc3f7f7f77fbf7b", - "7b3294c2a5cfa6dba0008837", - "7b3294c2a5cff7f7f7a6dba0008837", - "762a83af8dc3e7d4e8d9f0d37fbf7b1b7837", - "762a83af8dc3e7d4e8f7f7f7d9f0d37fbf7b1b7837", - "762a839970abc2a5cfe7d4e8d9f0d3a6dba05aae611b7837", - "762a839970abc2a5cfe7d4e8f7f7f7d9f0d3a6dba05aae611b7837", - "40004b762a839970abc2a5cfe7d4e8d9f0d3a6dba05aae611b783700441b", - "40004b762a839970abc2a5cfe7d4e8f7f7f7d9f0d3a6dba05aae611b783700441b" -).map(colors); +function formatUTCSeconds(d, p) { + return pad(d.getUTCSeconds(), p, 2); +} -var PRGn = ramp(scheme$1); +function formatUTCWeekdayNumberMonday(d) { + var dow = d.getUTCDay(); + return dow === 0 ? 7 : dow; +} -var scheme$2 = new Array(3).concat( - "e9a3c9f7f7f7a1d76a", - "d01c8bf1b6dab8e1864dac26", - "d01c8bf1b6daf7f7f7b8e1864dac26", - "c51b7de9a3c9fde0efe6f5d0a1d76a4d9221", - "c51b7de9a3c9fde0eff7f7f7e6f5d0a1d76a4d9221", - "c51b7dde77aef1b6dafde0efe6f5d0b8e1867fbc414d9221", - "c51b7dde77aef1b6dafde0eff7f7f7e6f5d0b8e1867fbc414d9221", - "8e0152c51b7dde77aef1b6dafde0efe6f5d0b8e1867fbc414d9221276419", - "8e0152c51b7dde77aef1b6dafde0eff7f7f7e6f5d0b8e1867fbc414d9221276419" -).map(colors); +function formatUTCWeekNumberSunday(d, p) { + return pad(utcSunday.count(utcYear(d) - 1, d), p, 2); +} -var PiYG = ramp(scheme$2); +function UTCdISO(d) { + var day = d.getUTCDay(); + return (day >= 4 || day === 0) ? utcThursday(d) : utcThursday.ceil(d); +} -var scheme$3 = new Array(3).concat( - "998ec3f7f7f7f1a340", - "5e3c99b2abd2fdb863e66101", - "5e3c99b2abd2f7f7f7fdb863e66101", - "542788998ec3d8daebfee0b6f1a340b35806", - "542788998ec3d8daebf7f7f7fee0b6f1a340b35806", - "5427888073acb2abd2d8daebfee0b6fdb863e08214b35806", - "5427888073acb2abd2d8daebf7f7f7fee0b6fdb863e08214b35806", - "2d004b5427888073acb2abd2d8daebfee0b6fdb863e08214b358067f3b08", - "2d004b5427888073acb2abd2d8daebf7f7f7fee0b6fdb863e08214b358067f3b08" -).map(colors); +function formatUTCWeekNumberISO(d, p) { + d = UTCdISO(d); + return pad(utcThursday.count(utcYear(d), d) + (utcYear(d).getUTCDay() === 4), p, 2); +} -var PuOr = ramp(scheme$3); +function formatUTCWeekdayNumberSunday(d) { + return d.getUTCDay(); +} -var scheme$4 = new Array(3).concat( - "ef8a62f7f7f767a9cf", - "ca0020f4a58292c5de0571b0", - "ca0020f4a582f7f7f792c5de0571b0", - "b2182bef8a62fddbc7d1e5f067a9cf2166ac", - "b2182bef8a62fddbc7f7f7f7d1e5f067a9cf2166ac", - "b2182bd6604df4a582fddbc7d1e5f092c5de4393c32166ac", - "b2182bd6604df4a582fddbc7f7f7f7d1e5f092c5de4393c32166ac", - "67001fb2182bd6604df4a582fddbc7d1e5f092c5de4393c32166ac053061", - "67001fb2182bd6604df4a582fddbc7f7f7f7d1e5f092c5de4393c32166ac053061" -).map(colors); +function formatUTCWeekNumberMonday(d, p) { + return pad(utcMonday.count(utcYear(d) - 1, d), p, 2); +} -var RdBu = ramp(scheme$4); +function formatUTCYear(d, p) { + return pad(d.getUTCFullYear() % 100, p, 2); +} -var scheme$5 = new Array(3).concat( - "ef8a62ffffff999999", - "ca0020f4a582bababa404040", - "ca0020f4a582ffffffbababa404040", - "b2182bef8a62fddbc7e0e0e09999994d4d4d", - "b2182bef8a62fddbc7ffffffe0e0e09999994d4d4d", - "b2182bd6604df4a582fddbc7e0e0e0bababa8787874d4d4d", - "b2182bd6604df4a582fddbc7ffffffe0e0e0bababa8787874d4d4d", - "67001fb2182bd6604df4a582fddbc7e0e0e0bababa8787874d4d4d1a1a1a", - "67001fb2182bd6604df4a582fddbc7ffffffe0e0e0bababa8787874d4d4d1a1a1a" -).map(colors); +function formatUTCYearISO(d, p) { + d = UTCdISO(d); + return pad(d.getUTCFullYear() % 100, p, 2); +} -var RdGy = ramp(scheme$5); +function formatUTCFullYear(d, p) { + return pad(d.getUTCFullYear() % 10000, p, 4); +} -var scheme$6 = new Array(3).concat( - "fc8d59ffffbf91bfdb", - "d7191cfdae61abd9e92c7bb6", - "d7191cfdae61ffffbfabd9e92c7bb6", - "d73027fc8d59fee090e0f3f891bfdb4575b4", - "d73027fc8d59fee090ffffbfe0f3f891bfdb4575b4", - "d73027f46d43fdae61fee090e0f3f8abd9e974add14575b4", - "d73027f46d43fdae61fee090ffffbfe0f3f8abd9e974add14575b4", - "a50026d73027f46d43fdae61fee090e0f3f8abd9e974add14575b4313695", - "a50026d73027f46d43fdae61fee090ffffbfe0f3f8abd9e974add14575b4313695" -).map(colors); +function formatUTCFullYearISO(d, p) { + var day = d.getUTCDay(); + d = (day >= 4 || day === 0) ? utcThursday(d) : utcThursday.ceil(d); + return pad(d.getUTCFullYear() % 10000, p, 4); +} -var RdYlBu = ramp(scheme$6); +function formatUTCZone() { + return "+0000"; +} -var scheme$7 = new Array(3).concat( - "fc8d59ffffbf91cf60", - "d7191cfdae61a6d96a1a9641", - "d7191cfdae61ffffbfa6d96a1a9641", - "d73027fc8d59fee08bd9ef8b91cf601a9850", - "d73027fc8d59fee08bffffbfd9ef8b91cf601a9850", - "d73027f46d43fdae61fee08bd9ef8ba6d96a66bd631a9850", - "d73027f46d43fdae61fee08bffffbfd9ef8ba6d96a66bd631a9850", - "a50026d73027f46d43fdae61fee08bd9ef8ba6d96a66bd631a9850006837", - "a50026d73027f46d43fdae61fee08bffffbfd9ef8ba6d96a66bd631a9850006837" -).map(colors); +function formatLiteralPercent() { + return "%"; +} -var RdYlGn = ramp(scheme$7); +function formatUnixTimestamp(d) { + return +d; +} -var scheme$8 = new Array(3).concat( - "fc8d59ffffbf99d594", - "d7191cfdae61abdda42b83ba", - "d7191cfdae61ffffbfabdda42b83ba", - "d53e4ffc8d59fee08be6f59899d5943288bd", - "d53e4ffc8d59fee08bffffbfe6f59899d5943288bd", - "d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd", - "d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd", - "9e0142d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd5e4fa2", - "9e0142d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd5e4fa2" -).map(colors); +function formatUnixTimestampSeconds(d) { + return Math.floor(+d / 1000); +} -var Spectral = ramp(scheme$8); +var locale; +exports.timeFormat = void 0; +exports.timeParse = void 0; +exports.utcFormat = void 0; +exports.utcParse = void 0; -var scheme$9 = new Array(3).concat( - "e5f5f999d8c92ca25f", - "edf8fbb2e2e266c2a4238b45", - "edf8fbb2e2e266c2a42ca25f006d2c", - "edf8fbccece699d8c966c2a42ca25f006d2c", - "edf8fbccece699d8c966c2a441ae76238b45005824", - "f7fcfde5f5f9ccece699d8c966c2a441ae76238b45005824", - "f7fcfde5f5f9ccece699d8c966c2a441ae76238b45006d2c00441b" -).map(colors); +defaultLocale({ + dateTime: "%x, %X", + date: "%-m/%-d/%Y", + time: "%-I:%M:%S %p", + periods: ["AM", "PM"], + days: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"], + shortDays: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"], + months: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"], + shortMonths: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"] +}); -var BuGn = ramp(scheme$9); +function defaultLocale(definition) { + locale = formatLocale(definition); + exports.timeFormat = locale.format; + exports.timeParse = locale.parse; + exports.utcFormat = locale.utcFormat; + exports.utcParse = locale.utcParse; + return locale; +} -var scheme$a = new Array(3).concat( - "e0ecf49ebcda8856a7", - "edf8fbb3cde38c96c688419d", - "edf8fbb3cde38c96c68856a7810f7c", - "edf8fbbfd3e69ebcda8c96c68856a7810f7c", - "edf8fbbfd3e69ebcda8c96c68c6bb188419d6e016b", - "f7fcfde0ecf4bfd3e69ebcda8c96c68c6bb188419d6e016b", - "f7fcfde0ecf4bfd3e69ebcda8c96c68c6bb188419d810f7c4d004b" -).map(colors); +var isoSpecifier = "%Y-%m-%dT%H:%M:%S.%LZ"; -var BuPu = ramp(scheme$a); +function formatIsoNative(date) { + return date.toISOString(); +} -var scheme$b = new Array(3).concat( - "e0f3dba8ddb543a2ca", - "f0f9e8bae4bc7bccc42b8cbe", - "f0f9e8bae4bc7bccc443a2ca0868ac", - "f0f9e8ccebc5a8ddb57bccc443a2ca0868ac", - "f0f9e8ccebc5a8ddb57bccc44eb3d32b8cbe08589e", - "f7fcf0e0f3dbccebc5a8ddb57bccc44eb3d32b8cbe08589e", - "f7fcf0e0f3dbccebc5a8ddb57bccc44eb3d32b8cbe0868ac084081" -).map(colors); +var formatIso = Date.prototype.toISOString + ? formatIsoNative + : exports.utcFormat(isoSpecifier); -var GnBu = ramp(scheme$b); +function parseIsoNative(string) { + var date = new Date(string); + return isNaN(date) ? null : date; +} -var scheme$c = new Array(3).concat( - "fee8c8fdbb84e34a33", - "fef0d9fdcc8afc8d59d7301f", - "fef0d9fdcc8afc8d59e34a33b30000", - "fef0d9fdd49efdbb84fc8d59e34a33b30000", - "fef0d9fdd49efdbb84fc8d59ef6548d7301f990000", - "fff7ecfee8c8fdd49efdbb84fc8d59ef6548d7301f990000", - "fff7ecfee8c8fdd49efdbb84fc8d59ef6548d7301fb300007f0000" -).map(colors); +var parseIso = +new Date("2000-01-01T00:00:00.000Z") + ? parseIsoNative + : exports.utcParse(isoSpecifier); -var OrRd = ramp(scheme$c); +var durationSecond = 1000, + durationMinute = durationSecond * 60, + durationHour = durationMinute * 60, + durationDay = durationHour * 24, + durationWeek = durationDay * 7, + durationMonth = durationDay * 30, + durationYear = durationDay * 365; -var scheme$d = new Array(3).concat( - "ece2f0a6bddb1c9099", - "f6eff7bdc9e167a9cf02818a", - "f6eff7bdc9e167a9cf1c9099016c59", - "f6eff7d0d1e6a6bddb67a9cf1c9099016c59", - "f6eff7d0d1e6a6bddb67a9cf3690c002818a016450", - "fff7fbece2f0d0d1e6a6bddb67a9cf3690c002818a016450", - "fff7fbece2f0d0d1e6a6bddb67a9cf3690c002818a016c59014636" -).map(colors); +function date(t) { + return new Date(t); +} -var PuBuGn = ramp(scheme$d); +function number(t) { + return t instanceof Date ? +t : +new Date(+t); +} -var scheme$e = new Array(3).concat( - "ece7f2a6bddb2b8cbe", - "f1eef6bdc9e174a9cf0570b0", - "f1eef6bdc9e174a9cf2b8cbe045a8d", - "f1eef6d0d1e6a6bddb74a9cf2b8cbe045a8d", - "f1eef6d0d1e6a6bddb74a9cf3690c00570b0034e7b", - "fff7fbece7f2d0d1e6a6bddb74a9cf3690c00570b0034e7b", - "fff7fbece7f2d0d1e6a6bddb74a9cf3690c00570b0045a8d023858" -).map(colors); +function calendar(year, month, week, day, hour, minute, second, millisecond, format) { + var scale = continuous(), + invert = scale.invert, + domain = scale.domain; -var PuBu = ramp(scheme$e); + var formatMillisecond = format(".%L"), + formatSecond = format(":%S"), + formatMinute = format("%I:%M"), + formatHour = format("%I %p"), + formatDay = format("%a %d"), + formatWeek = format("%b %d"), + formatMonth = format("%B"), + formatYear = format("%Y"); -var scheme$f = new Array(3).concat( - "e7e1efc994c7dd1c77", - "f1eef6d7b5d8df65b0ce1256", - "f1eef6d7b5d8df65b0dd1c77980043", - "f1eef6d4b9dac994c7df65b0dd1c77980043", - "f1eef6d4b9dac994c7df65b0e7298ace125691003f", - "f7f4f9e7e1efd4b9dac994c7df65b0e7298ace125691003f", - "f7f4f9e7e1efd4b9dac994c7df65b0e7298ace125698004367001f" -).map(colors); + var tickIntervals = [ + [second, 1, durationSecond], + [second, 5, 5 * durationSecond], + [second, 15, 15 * durationSecond], + [second, 30, 30 * durationSecond], + [minute, 1, durationMinute], + [minute, 5, 5 * durationMinute], + [minute, 15, 15 * durationMinute], + [minute, 30, 30 * durationMinute], + [ hour, 1, durationHour ], + [ hour, 3, 3 * durationHour ], + [ hour, 6, 6 * durationHour ], + [ hour, 12, 12 * durationHour ], + [ day, 1, durationDay ], + [ day, 2, 2 * durationDay ], + [ week, 1, durationWeek ], + [ month, 1, durationMonth ], + [ month, 3, 3 * durationMonth ], + [ year, 1, durationYear ] + ]; -var PuRd = ramp(scheme$f); + function tickFormat(date) { + return (second(date) < date ? formatMillisecond + : minute(date) < date ? formatSecond + : hour(date) < date ? formatMinute + : day(date) < date ? formatHour + : month(date) < date ? (week(date) < date ? formatDay : formatWeek) + : year(date) < date ? formatMonth + : formatYear)(date); + } -var scheme$g = new Array(3).concat( - "fde0ddfa9fb5c51b8a", - "feebe2fbb4b9f768a1ae017e", - "feebe2fbb4b9f768a1c51b8a7a0177", - "feebe2fcc5c0fa9fb5f768a1c51b8a7a0177", - "feebe2fcc5c0fa9fb5f768a1dd3497ae017e7a0177", - "fff7f3fde0ddfcc5c0fa9fb5f768a1dd3497ae017e7a0177", - "fff7f3fde0ddfcc5c0fa9fb5f768a1dd3497ae017e7a017749006a" -).map(colors); + function tickInterval(interval, start, stop) { + if (interval == null) interval = 10; -var RdPu = ramp(scheme$g); + // If a desired tick count is specified, pick a reasonable tick interval + // based on the extent of the domain and a rough estimate of tick size. + // Otherwise, assume interval is already a time interval and use it. + if (typeof interval === "number") { + var target = Math.abs(stop - start) / interval, + i = bisector(function(i) { return i[2]; }).right(tickIntervals, target), + step; + if (i === tickIntervals.length) { + step = tickStep(start / durationYear, stop / durationYear, interval); + interval = year; + } else if (i) { + i = tickIntervals[target / tickIntervals[i - 1][2] < tickIntervals[i][2] / target ? i - 1 : i]; + step = i[1]; + interval = i[0]; + } else { + step = Math.max(tickStep(start, stop, interval), 1); + interval = millisecond; + } + return interval.every(step); + } -var scheme$h = new Array(3).concat( - "edf8b17fcdbb2c7fb8", - "ffffcca1dab441b6c4225ea8", - "ffffcca1dab441b6c42c7fb8253494", - "ffffccc7e9b47fcdbb41b6c42c7fb8253494", - "ffffccc7e9b47fcdbb41b6c41d91c0225ea80c2c84", - "ffffd9edf8b1c7e9b47fcdbb41b6c41d91c0225ea80c2c84", - "ffffd9edf8b1c7e9b47fcdbb41b6c41d91c0225ea8253494081d58" -).map(colors); + return interval; + } -var YlGnBu = ramp(scheme$h); + scale.invert = function(y) { + return new Date(invert(y)); + }; -var scheme$i = new Array(3).concat( - "f7fcb9addd8e31a354", - "ffffccc2e69978c679238443", - "ffffccc2e69978c67931a354006837", - "ffffccd9f0a3addd8e78c67931a354006837", - "ffffccd9f0a3addd8e78c67941ab5d238443005a32", - "ffffe5f7fcb9d9f0a3addd8e78c67941ab5d238443005a32", - "ffffe5f7fcb9d9f0a3addd8e78c67941ab5d238443006837004529" -).map(colors); + scale.domain = function(_) { + return arguments.length ? domain(Array.from(_, number)) : domain().map(date); + }; -var YlGn = ramp(scheme$i); + scale.ticks = function(interval) { + var d = domain(), + t0 = d[0], + t1 = d[d.length - 1], + r = t1 < t0, + t; + if (r) t = t0, t0 = t1, t1 = t; + t = tickInterval(interval, t0, t1); + t = t ? t.range(t0, t1 + 1) : []; // inclusive stop + return r ? t.reverse() : t; + }; -var scheme$j = new Array(3).concat( - "fff7bcfec44fd95f0e", - "ffffd4fed98efe9929cc4c02", - "ffffd4fed98efe9929d95f0e993404", - "ffffd4fee391fec44ffe9929d95f0e993404", - "ffffd4fee391fec44ffe9929ec7014cc4c028c2d04", - "ffffe5fff7bcfee391fec44ffe9929ec7014cc4c028c2d04", - "ffffe5fff7bcfee391fec44ffe9929ec7014cc4c02993404662506" -).map(colors); + scale.tickFormat = function(count, specifier) { + return specifier == null ? tickFormat : format(specifier); + }; -var YlOrBr = ramp(scheme$j); + scale.nice = function(interval) { + var d = domain(); + return (interval = tickInterval(interval, d[0], d[d.length - 1])) + ? domain(nice(d, interval)) + : scale; + }; -var scheme$k = new Array(3).concat( - "ffeda0feb24cf03b20", - "ffffb2fecc5cfd8d3ce31a1c", - "ffffb2fecc5cfd8d3cf03b20bd0026", - "ffffb2fed976feb24cfd8d3cf03b20bd0026", - "ffffb2fed976feb24cfd8d3cfc4e2ae31a1cb10026", - "ffffccffeda0fed976feb24cfd8d3cfc4e2ae31a1cb10026", - "ffffccffeda0fed976feb24cfd8d3cfc4e2ae31a1cbd0026800026" -).map(colors); + scale.copy = function() { + return copy$1(scale, calendar(year, month, week, day, hour, minute, second, millisecond, format)); + }; -var YlOrRd = ramp(scheme$k); + return scale; +} -var scheme$l = new Array(3).concat( - "deebf79ecae13182bd", - "eff3ffbdd7e76baed62171b5", - "eff3ffbdd7e76baed63182bd08519c", - "eff3ffc6dbef9ecae16baed63182bd08519c", - "eff3ffc6dbef9ecae16baed64292c62171b5084594", - "f7fbffdeebf7c6dbef9ecae16baed64292c62171b5084594", - "f7fbffdeebf7c6dbef9ecae16baed64292c62171b508519c08306b" -).map(colors); +function time() { + return initRange.apply(calendar(year, month, sunday, day, hour, minute, second, millisecond, exports.timeFormat).domain([new Date(2000, 0, 1), new Date(2000, 0, 2)]), arguments); +} -var Blues = ramp(scheme$l); +function utcTime() { + return initRange.apply(calendar(utcYear, utcMonth, utcSunday, utcDay, utcHour, utcMinute, second, millisecond, exports.utcFormat).domain([Date.UTC(2000, 0, 1), Date.UTC(2000, 0, 2)]), arguments); +} -var scheme$m = new Array(3).concat( - "e5f5e0a1d99b31a354", - "edf8e9bae4b374c476238b45", - "edf8e9bae4b374c47631a354006d2c", - "edf8e9c7e9c0a1d99b74c47631a354006d2c", - "edf8e9c7e9c0a1d99b74c47641ab5d238b45005a32", - "f7fcf5e5f5e0c7e9c0a1d99b74c47641ab5d238b45005a32", - "f7fcf5e5f5e0c7e9c0a1d99b74c47641ab5d238b45006d2c00441b" -).map(colors); +function transformer$1() { + var x0 = 0, + x1 = 1, + t0, + t1, + k10, + transform, + interpolator = identity$3, + clamp = false, + unknown; -var Greens = ramp(scheme$m); + function scale(x) { + return x == null || isNaN(x = +x) ? unknown : interpolator(k10 === 0 ? 0.5 : (x = (transform(x) - t0) * k10, clamp ? Math.max(0, Math.min(1, x)) : x)); + } -var scheme$n = new Array(3).concat( - "f0f0f0bdbdbd636363", - "f7f7f7cccccc969696525252", - "f7f7f7cccccc969696636363252525", - "f7f7f7d9d9d9bdbdbd969696636363252525", - "f7f7f7d9d9d9bdbdbd969696737373525252252525", - "fffffff0f0f0d9d9d9bdbdbd969696737373525252252525", - "fffffff0f0f0d9d9d9bdbdbd969696737373525252252525000000" -).map(colors); + scale.domain = function(_) { + return arguments.length ? ([x0, x1] = _, t0 = transform(x0 = +x0), t1 = transform(x1 = +x1), k10 = t0 === t1 ? 0 : 1 / (t1 - t0), scale) : [x0, x1]; + }; -var Greys = ramp(scheme$n); + scale.clamp = function(_) { + return arguments.length ? (clamp = !!_, scale) : clamp; + }; -var scheme$o = new Array(3).concat( - "efedf5bcbddc756bb1", - "f2f0f7cbc9e29e9ac86a51a3", - "f2f0f7cbc9e29e9ac8756bb154278f", - "f2f0f7dadaebbcbddc9e9ac8756bb154278f", - "f2f0f7dadaebbcbddc9e9ac8807dba6a51a34a1486", - "fcfbfdefedf5dadaebbcbddc9e9ac8807dba6a51a34a1486", - "fcfbfdefedf5dadaebbcbddc9e9ac8807dba6a51a354278f3f007d" -).map(colors); + scale.interpolator = function(_) { + return arguments.length ? (interpolator = _, scale) : interpolator; + }; -var Purples = ramp(scheme$o); + function range(interpolate) { + return function(_) { + var r0, r1; + return arguments.length ? ([r0, r1] = _, interpolator = interpolate(r0, r1), scale) : [interpolator(0), interpolator(1)]; + }; + } -var scheme$p = new Array(3).concat( - "fee0d2fc9272de2d26", - "fee5d9fcae91fb6a4acb181d", - "fee5d9fcae91fb6a4ade2d26a50f15", - "fee5d9fcbba1fc9272fb6a4ade2d26a50f15", - "fee5d9fcbba1fc9272fb6a4aef3b2ccb181d99000d", - "fff5f0fee0d2fcbba1fc9272fb6a4aef3b2ccb181d99000d", - "fff5f0fee0d2fcbba1fc9272fb6a4aef3b2ccb181da50f1567000d" -).map(colors); + scale.range = range(interpolate$2); -var Reds = ramp(scheme$p); + scale.rangeRound = range(interpolateRound); -var scheme$q = new Array(3).concat( - "fee6cefdae6be6550d", - "feeddefdbe85fd8d3cd94701", - "feeddefdbe85fd8d3ce6550da63603", - "feeddefdd0a2fdae6bfd8d3ce6550da63603", - "feeddefdd0a2fdae6bfd8d3cf16913d948018c2d04", - "fff5ebfee6cefdd0a2fdae6bfd8d3cf16913d948018c2d04", - "fff5ebfee6cefdd0a2fdae6bfd8d3cf16913d94801a636037f2704" -).map(colors); + scale.unknown = function(_) { + return arguments.length ? (unknown = _, scale) : unknown; + }; -var Oranges = ramp(scheme$q); + return function(t) { + transform = t, t0 = t(x0), t1 = t(x1), k10 = t0 === t1 ? 0 : 1 / (t1 - t0); + return scale; + }; +} -function cividis(t) { - t = Math.max(0, Math.min(1, t)); - return "rgb(" - + Math.max(0, Math.min(255, Math.round(-4.54 - t * (35.34 - t * (2381.73 - t * (6402.7 - t * (7024.72 - t * 2710.57))))))) + ", " - + Math.max(0, Math.min(255, Math.round(32.49 + t * (170.73 + t * (52.82 - t * (131.46 - t * (176.58 - t * 67.37))))))) + ", " - + Math.max(0, Math.min(255, Math.round(81.24 + t * (442.36 - t * (2482.43 - t * (6167.24 - t * (6614.94 - t * 2475.67))))))) - + ")"; +function copy(source, target) { + return target + .domain(source.domain()) + .interpolator(source.interpolator()) + .clamp(source.clamp()) + .unknown(source.unknown()); } -var cubehelix$3 = cubehelixLong(cubehelix(300, 0.5, 0.0), cubehelix(-240, 0.5, 1.0)); +function sequential() { + var scale = linearish(transformer$1()(identity$3)); -var warm = cubehelixLong(cubehelix(-100, 0.75, 0.35), cubehelix(80, 1.50, 0.8)); + scale.copy = function() { + return copy(scale, sequential()); + }; -var cool = cubehelixLong(cubehelix(260, 0.75, 0.35), cubehelix(80, 1.50, 0.8)); + return initInterpolator.apply(scale, arguments); +} -var c = cubehelix(); +function sequentialLog() { + var scale = loggish(transformer$1()).domain([1, 10]); -function rainbow(t) { - if (t < 0 || t > 1) t -= Math.floor(t); - var ts = Math.abs(t - 0.5); - c.h = 360 * t - 100; - c.s = 1.5 - 1.5 * ts; - c.l = 0.8 - 0.9 * ts; - return c + ""; + scale.copy = function() { + return copy(scale, sequentialLog()).base(scale.base()); + }; + + return initInterpolator.apply(scale, arguments); } -var c$1 = rgb(), - pi_1_3 = Math.PI / 3, - pi_2_3 = Math.PI * 2 / 3; +function sequentialSymlog() { + var scale = symlogish(transformer$1()); -function sinebow(t) { - var x; - t = (0.5 - t) * Math.PI; - c$1.r = 255 * (x = Math.sin(t)) * x; - c$1.g = 255 * (x = Math.sin(t + pi_1_3)) * x; - c$1.b = 255 * (x = Math.sin(t + pi_2_3)) * x; - return c$1 + ""; -} + scale.copy = function() { + return copy(scale, sequentialSymlog()).constant(scale.constant()); + }; -function turbo(t) { - t = Math.max(0, Math.min(1, t)); - return "rgb(" - + Math.max(0, Math.min(255, Math.round(34.61 + t * (1172.33 - t * (10793.56 - t * (33300.12 - t * (38394.49 - t * 14825.05))))))) + ", " - + Math.max(0, Math.min(255, Math.round(23.31 + t * (557.33 + t * (1225.33 - t * (3574.96 - t * (1073.77 + t * 707.56))))))) + ", " - + Math.max(0, Math.min(255, Math.round(27.2 + t * (3211.1 - t * (15327.97 - t * (27814 - t * (22569.18 - t * 6838.66))))))) - + ")"; + return initInterpolator.apply(scale, arguments); } -function ramp$1(range) { - var n = range.length; - return function(t) { - return range[Math.max(0, Math.min(n - 1, Math.floor(t * n)))]; +function sequentialPow() { + var scale = powish(transformer$1()); + + scale.copy = function() { + return copy(scale, sequentialPow()).exponent(scale.exponent()); }; + + return initInterpolator.apply(scale, arguments); +} + +function sequentialSqrt() { + return sequentialPow.apply(null, arguments).exponent(0.5); } -var viridis = ramp$1(colors("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")); +function sequentialQuantile() { + var domain = [], + interpolator = identity$3; + + function scale(x) { + if (x != null && !isNaN(x = +x)) return interpolator((bisectRight(domain, x, 1) - 1) / (domain.length - 1)); + } + + scale.domain = function(_) { + if (!arguments.length) return domain.slice(); + domain = []; + for (let d of _) if (d != null && !isNaN(d = +d)) domain.push(d); + domain.sort(ascending$3); + return scale; + }; -var magma = ramp$1(colors("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")); + scale.interpolator = function(_) { + return arguments.length ? (interpolator = _, scale) : interpolator; + }; -var inferno = ramp$1(colors("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")); + scale.range = function() { + return domain.map((d, i) => interpolator(i / (domain.length - 1))); + }; -var plasma = ramp$1(colors("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")); + scale.quantiles = function(n) { + return Array.from({length: n + 1}, (_, i) => quantile$1(domain, i / n)); + }; -function constant$b(x) { - return function constant() { - return x; + scale.copy = function() { + return sequentialQuantile(interpolator).domain(domain); }; + + return initInterpolator.apply(scale, arguments); } -var abs$1 = Math.abs; -var atan2$1 = Math.atan2; -var cos$2 = Math.cos; -var max$2 = Math.max; -var min$1 = Math.min; -var sin$2 = Math.sin; -var sqrt$2 = Math.sqrt; +function transformer() { + var x0 = 0, + x1 = 0.5, + x2 = 1, + s = 1, + t0, + t1, + t2, + k10, + k21, + interpolator = identity$3, + transform, + clamp = false, + unknown; + + function scale(x) { + return isNaN(x = +x) ? unknown : (x = 0.5 + ((x = +transform(x)) - t1) * (s * x < s * t1 ? k10 : k21), interpolator(clamp ? Math.max(0, Math.min(1, x)) : x)); + } -var epsilon$3 = 1e-12; -var pi$4 = Math.PI; -var halfPi$3 = pi$4 / 2; -var tau$4 = 2 * pi$4; + scale.domain = function(_) { + return arguments.length ? ([x0, x1, x2] = _, t0 = transform(x0 = +x0), t1 = transform(x1 = +x1), t2 = transform(x2 = +x2), k10 = t0 === t1 ? 0 : 0.5 / (t1 - t0), k21 = t1 === t2 ? 0 : 0.5 / (t2 - t1), s = t1 < t0 ? -1 : 1, scale) : [x0, x1, x2]; + }; -function acos$1(x) { - return x > 1 ? 0 : x < -1 ? pi$4 : Math.acos(x); -} + scale.clamp = function(_) { + return arguments.length ? (clamp = !!_, scale) : clamp; + }; -function asin$1(x) { - return x >= 1 ? halfPi$3 : x <= -1 ? -halfPi$3 : Math.asin(x); -} + scale.interpolator = function(_) { + return arguments.length ? (interpolator = _, scale) : interpolator; + }; -function arcInnerRadius(d) { - return d.innerRadius; -} + function range(interpolate) { + return function(_) { + var r0, r1, r2; + return arguments.length ? ([r0, r1, r2] = _, interpolator = piecewise(interpolate, [r0, r1, r2]), scale) : [interpolator(0), interpolator(0.5), interpolator(1)]; + }; + } -function arcOuterRadius(d) { - return d.outerRadius; -} + scale.range = range(interpolate$2); -function arcStartAngle(d) { - return d.startAngle; + scale.rangeRound = range(interpolateRound); + + scale.unknown = function(_) { + return arguments.length ? (unknown = _, scale) : unknown; + }; + + return function(t) { + transform = t, t0 = t(x0), t1 = t(x1), t2 = t(x2), k10 = t0 === t1 ? 0 : 0.5 / (t1 - t0), k21 = t1 === t2 ? 0 : 0.5 / (t2 - t1), s = t1 < t0 ? -1 : 1; + return scale; + }; } -function arcEndAngle(d) { - return d.endAngle; -} +function diverging$1() { + var scale = linearish(transformer()(identity$3)); -function arcPadAngle(d) { - return d && d.padAngle; // Note: optional! -} + scale.copy = function() { + return copy(scale, diverging$1()); + }; -function intersect(x0, y0, x1, y1, x2, y2, x3, y3) { - var x10 = x1 - x0, y10 = y1 - y0, - x32 = x3 - x2, y32 = y3 - y2, - t = y32 * x10 - x32 * y10; - if (t * t < epsilon$3) return; - t = (x32 * (y0 - y2) - y32 * (x0 - x2)) / t; - return [x0 + t * x10, y0 + t * y10]; + return initInterpolator.apply(scale, arguments); } -// Compute perpendicular offset line of length rc. -// http://mathworld.wolfram.com/Circle-LineIntersection.html -function cornerTangents(x0, y0, x1, y1, r1, rc, cw) { - var x01 = x0 - x1, - y01 = y0 - y1, - lo = (cw ? rc : -rc) / sqrt$2(x01 * x01 + y01 * y01), - ox = lo * y01, - oy = -lo * x01, - x11 = x0 + ox, - y11 = y0 + oy, - x10 = x1 + ox, - y10 = y1 + oy, - x00 = (x11 + x10) / 2, - y00 = (y11 + y10) / 2, - dx = x10 - x11, - dy = y10 - y11, - d2 = dx * dx + dy * dy, - r = r1 - rc, - D = x11 * y10 - x10 * y11, - d = (dy < 0 ? -1 : 1) * sqrt$2(max$2(0, r * r * d2 - D * D)), - cx0 = (D * dy - dx * d) / d2, - cy0 = (-D * dx - dy * d) / d2, - cx1 = (D * dy + dx * d) / d2, - cy1 = (-D * dx + dy * d) / d2, - dx0 = cx0 - x00, - dy0 = cy0 - y00, - dx1 = cx1 - x00, - dy1 = cy1 - y00; - - // Pick the closer of the two intersection points. - // TODO Is there a faster way to determine which intersection to use? - if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1; +function divergingLog() { + var scale = loggish(transformer()).domain([0.1, 1, 10]); - return { - cx: cx0, - cy: cy0, - x01: -ox, - y01: -oy, - x11: cx0 * (r1 / r - 1), - y11: cy0 * (r1 / r - 1) + scale.copy = function() { + return copy(scale, divergingLog()).base(scale.base()); }; + + return initInterpolator.apply(scale, arguments); } -function arc() { - var innerRadius = arcInnerRadius, - outerRadius = arcOuterRadius, - cornerRadius = constant$b(0), - padRadius = null, - startAngle = arcStartAngle, - endAngle = arcEndAngle, - padAngle = arcPadAngle, - context = null; +function divergingSymlog() { + var scale = symlogish(transformer()); - function arc() { - var buffer, - r, - r0 = +innerRadius.apply(this, arguments), - r1 = +outerRadius.apply(this, arguments), - a0 = startAngle.apply(this, arguments) - halfPi$3, - a1 = endAngle.apply(this, arguments) - halfPi$3, - da = abs$1(a1 - a0), - cw = a1 > a0; + scale.copy = function() { + return copy(scale, divergingSymlog()).constant(scale.constant()); + }; - if (!context) context = buffer = path(); + return initInterpolator.apply(scale, arguments); +} - // Ensure that the outer radius is always larger than the inner radius. - if (r1 < r0) r = r1, r1 = r0, r0 = r; +function divergingPow() { + var scale = powish(transformer()); - // Is it a point? - if (!(r1 > epsilon$3)) context.moveTo(0, 0); + scale.copy = function() { + return copy(scale, divergingPow()).exponent(scale.exponent()); + }; - // Or is it a circle or annulus? - else if (da > tau$4 - epsilon$3) { - context.moveTo(r1 * cos$2(a0), r1 * sin$2(a0)); - context.arc(0, 0, r1, a0, a1, !cw); - if (r0 > epsilon$3) { - context.moveTo(r0 * cos$2(a1), r0 * sin$2(a1)); - context.arc(0, 0, r0, a1, a0, cw); - } - } + return initInterpolator.apply(scale, arguments); +} - // Or is it a circular or annular sector? - else { - var a01 = a0, - a11 = a1, - a00 = a0, - a10 = a1, - da0 = da, - da1 = da, - ap = padAngle.apply(this, arguments) / 2, - rp = (ap > epsilon$3) && (padRadius ? +padRadius.apply(this, arguments) : sqrt$2(r0 * r0 + r1 * r1)), - rc = min$1(abs$1(r1 - r0) / 2, +cornerRadius.apply(this, arguments)), - rc0 = rc, - rc1 = rc, - t0, - t1; +function divergingSqrt() { + return divergingPow.apply(null, arguments).exponent(0.5); +} - // Apply padding? Note that since r1 ≥ r0, da1 ≥ da0. - if (rp > epsilon$3) { - var p0 = asin$1(rp / r0 * sin$2(ap)), - p1 = asin$1(rp / r1 * sin$2(ap)); - if ((da0 -= p0 * 2) > epsilon$3) p0 *= (cw ? 1 : -1), a00 += p0, a10 -= p0; - else da0 = 0, a00 = a10 = (a0 + a1) / 2; - if ((da1 -= p1 * 2) > epsilon$3) p1 *= (cw ? 1 : -1), a01 += p1, a11 -= p1; - else da1 = 0, a01 = a11 = (a0 + a1) / 2; - } +function colors(specifier) { + var n = specifier.length / 6 | 0, colors = new Array(n), i = 0; + while (i < n) colors[i] = "#" + specifier.slice(i * 6, ++i * 6); + return colors; +} - var x01 = r1 * cos$2(a01), - y01 = r1 * sin$2(a01), - x10 = r0 * cos$2(a10), - y10 = r0 * sin$2(a10); +var category10 = colors("1f77b4ff7f0e2ca02cd627289467bd8c564be377c27f7f7fbcbd2217becf"); - // Apply rounded corners? - if (rc > epsilon$3) { - var x11 = r1 * cos$2(a11), - y11 = r1 * sin$2(a11), - x00 = r0 * cos$2(a00), - y00 = r0 * sin$2(a00), - oc; +var Accent = colors("7fc97fbeaed4fdc086ffff99386cb0f0027fbf5b17666666"); - // Restrict the corner radius according to the sector angle. - if (da < pi$4 && (oc = intersect(x01, y01, x00, y00, x11, y11, x10, y10))) { - var ax = x01 - oc[0], - ay = y01 - oc[1], - bx = x11 - oc[0], - by = y11 - oc[1], - kc = 1 / sin$2(acos$1((ax * bx + ay * by) / (sqrt$2(ax * ax + ay * ay) * sqrt$2(bx * bx + by * by))) / 2), - lc = sqrt$2(oc[0] * oc[0] + oc[1] * oc[1]); - rc0 = min$1(rc, (r0 - lc) / (kc - 1)); - rc1 = min$1(rc, (r1 - lc) / (kc + 1)); - } - } +var Dark2 = colors("1b9e77d95f027570b3e7298a66a61ee6ab02a6761d666666"); - // Is the sector collapsed to a line? - if (!(da1 > epsilon$3)) context.moveTo(x01, y01); +var Paired = colors("a6cee31f78b4b2df8a33a02cfb9a99e31a1cfdbf6fff7f00cab2d66a3d9affff99b15928"); - // Does the sector’s outer ring have rounded corners? - else if (rc1 > epsilon$3) { - t0 = cornerTangents(x00, y00, x01, y01, r1, rc1, cw); - t1 = cornerTangents(x11, y11, x10, y10, r1, rc1, cw); +var Pastel1 = colors("fbb4aeb3cde3ccebc5decbe4fed9a6ffffcce5d8bdfddaecf2f2f2"); - context.moveTo(t0.cx + t0.x01, t0.cy + t0.y01); +var Pastel2 = colors("b3e2cdfdcdaccbd5e8f4cae4e6f5c9fff2aef1e2cccccccc"); - // Have the corners merged? - if (rc1 < rc) context.arc(t0.cx, t0.cy, rc1, atan2$1(t0.y01, t0.x01), atan2$1(t1.y01, t1.x01), !cw); +var Set1 = colors("e41a1c377eb84daf4a984ea3ff7f00ffff33a65628f781bf999999"); - // Otherwise, draw the two corners and the ring. - else { - context.arc(t0.cx, t0.cy, rc1, atan2$1(t0.y01, t0.x01), atan2$1(t0.y11, t0.x11), !cw); - context.arc(0, 0, r1, atan2$1(t0.cy + t0.y11, t0.cx + t0.x11), atan2$1(t1.cy + t1.y11, t1.cx + t1.x11), !cw); - context.arc(t1.cx, t1.cy, rc1, atan2$1(t1.y11, t1.x11), atan2$1(t1.y01, t1.x01), !cw); - } - } +var Set2 = colors("66c2a5fc8d628da0cbe78ac3a6d854ffd92fe5c494b3b3b3"); - // Or is the outer ring just a circular arc? - else context.moveTo(x01, y01), context.arc(0, 0, r1, a01, a11, !cw); +var Set3 = colors("8dd3c7ffffb3bebadafb807280b1d3fdb462b3de69fccde5d9d9d9bc80bdccebc5ffed6f"); - // Is there no inner ring, and it’s a circular sector? - // Or perhaps it’s an annular sector collapsed due to padding? - if (!(r0 > epsilon$3) || !(da0 > epsilon$3)) context.lineTo(x10, y10); +var Tableau10 = colors("4e79a7f28e2ce1575976b7b259a14fedc949af7aa1ff9da79c755fbab0ab"); - // Does the sector’s inner ring (or point) have rounded corners? - else if (rc0 > epsilon$3) { - t0 = cornerTangents(x10, y10, x11, y11, r0, -rc0, cw); - t1 = cornerTangents(x01, y01, x00, y00, r0, -rc0, cw); +var ramp$1 = scheme => rgbBasis(scheme[scheme.length - 1]); - context.lineTo(t0.cx + t0.x01, t0.cy + t0.y01); +var scheme$q = new Array(3).concat( + "d8b365f5f5f55ab4ac", + "a6611adfc27d80cdc1018571", + "a6611adfc27df5f5f580cdc1018571", + "8c510ad8b365f6e8c3c7eae55ab4ac01665e", + "8c510ad8b365f6e8c3f5f5f5c7eae55ab4ac01665e", + "8c510abf812ddfc27df6e8c3c7eae580cdc135978f01665e", + "8c510abf812ddfc27df6e8c3f5f5f5c7eae580cdc135978f01665e", + "5430058c510abf812ddfc27df6e8c3c7eae580cdc135978f01665e003c30", + "5430058c510abf812ddfc27df6e8c3f5f5f5c7eae580cdc135978f01665e003c30" +).map(colors); - // Have the corners merged? - if (rc0 < rc) context.arc(t0.cx, t0.cy, rc0, atan2$1(t0.y01, t0.x01), atan2$1(t1.y01, t1.x01), !cw); +var BrBG = ramp$1(scheme$q); - // Otherwise, draw the two corners and the ring. - else { - context.arc(t0.cx, t0.cy, rc0, atan2$1(t0.y01, t0.x01), atan2$1(t0.y11, t0.x11), !cw); - context.arc(0, 0, r0, atan2$1(t0.cy + t0.y11, t0.cx + t0.x11), atan2$1(t1.cy + t1.y11, t1.cx + t1.x11), cw); - context.arc(t1.cx, t1.cy, rc0, atan2$1(t1.y11, t1.x11), atan2$1(t1.y01, t1.x01), !cw); - } - } +var scheme$p = new Array(3).concat( + "af8dc3f7f7f77fbf7b", + "7b3294c2a5cfa6dba0008837", + "7b3294c2a5cff7f7f7a6dba0008837", + "762a83af8dc3e7d4e8d9f0d37fbf7b1b7837", + "762a83af8dc3e7d4e8f7f7f7d9f0d37fbf7b1b7837", + "762a839970abc2a5cfe7d4e8d9f0d3a6dba05aae611b7837", + "762a839970abc2a5cfe7d4e8f7f7f7d9f0d3a6dba05aae611b7837", + "40004b762a839970abc2a5cfe7d4e8d9f0d3a6dba05aae611b783700441b", + "40004b762a839970abc2a5cfe7d4e8f7f7f7d9f0d3a6dba05aae611b783700441b" +).map(colors); - // Or is the inner ring just a circular arc? - else context.arc(0, 0, r0, a10, a00, cw); - } +var PRGn = ramp$1(scheme$p); - context.closePath(); +var scheme$o = new Array(3).concat( + "e9a3c9f7f7f7a1d76a", + "d01c8bf1b6dab8e1864dac26", + "d01c8bf1b6daf7f7f7b8e1864dac26", + "c51b7de9a3c9fde0efe6f5d0a1d76a4d9221", + "c51b7de9a3c9fde0eff7f7f7e6f5d0a1d76a4d9221", + "c51b7dde77aef1b6dafde0efe6f5d0b8e1867fbc414d9221", + "c51b7dde77aef1b6dafde0eff7f7f7e6f5d0b8e1867fbc414d9221", + "8e0152c51b7dde77aef1b6dafde0efe6f5d0b8e1867fbc414d9221276419", + "8e0152c51b7dde77aef1b6dafde0eff7f7f7e6f5d0b8e1867fbc414d9221276419" +).map(colors); - if (buffer) return context = null, buffer + "" || null; - } +var PiYG = ramp$1(scheme$o); - arc.centroid = function() { - var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, - a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - pi$4 / 2; - return [cos$2(a) * r, sin$2(a) * r]; - }; +var scheme$n = new Array(3).concat( + "998ec3f7f7f7f1a340", + "5e3c99b2abd2fdb863e66101", + "5e3c99b2abd2f7f7f7fdb863e66101", + "542788998ec3d8daebfee0b6f1a340b35806", + "542788998ec3d8daebf7f7f7fee0b6f1a340b35806", + "5427888073acb2abd2d8daebfee0b6fdb863e08214b35806", + "5427888073acb2abd2d8daebf7f7f7fee0b6fdb863e08214b35806", + "2d004b5427888073acb2abd2d8daebfee0b6fdb863e08214b358067f3b08", + "2d004b5427888073acb2abd2d8daebf7f7f7fee0b6fdb863e08214b358067f3b08" +).map(colors); - arc.innerRadius = function(_) { - return arguments.length ? (innerRadius = typeof _ === "function" ? _ : constant$b(+_), arc) : innerRadius; - }; +var PuOr = ramp$1(scheme$n); - arc.outerRadius = function(_) { - return arguments.length ? (outerRadius = typeof _ === "function" ? _ : constant$b(+_), arc) : outerRadius; - }; +var scheme$m = new Array(3).concat( + "ef8a62f7f7f767a9cf", + "ca0020f4a58292c5de0571b0", + "ca0020f4a582f7f7f792c5de0571b0", + "b2182bef8a62fddbc7d1e5f067a9cf2166ac", + "b2182bef8a62fddbc7f7f7f7d1e5f067a9cf2166ac", + "b2182bd6604df4a582fddbc7d1e5f092c5de4393c32166ac", + "b2182bd6604df4a582fddbc7f7f7f7d1e5f092c5de4393c32166ac", + "67001fb2182bd6604df4a582fddbc7d1e5f092c5de4393c32166ac053061", + "67001fb2182bd6604df4a582fddbc7f7f7f7d1e5f092c5de4393c32166ac053061" +).map(colors); - arc.cornerRadius = function(_) { - return arguments.length ? (cornerRadius = typeof _ === "function" ? _ : constant$b(+_), arc) : cornerRadius; - }; +var RdBu = ramp$1(scheme$m); - arc.padRadius = function(_) { - return arguments.length ? (padRadius = _ == null ? null : typeof _ === "function" ? _ : constant$b(+_), arc) : padRadius; - }; +var scheme$l = new Array(3).concat( + "ef8a62ffffff999999", + "ca0020f4a582bababa404040", + "ca0020f4a582ffffffbababa404040", + "b2182bef8a62fddbc7e0e0e09999994d4d4d", + "b2182bef8a62fddbc7ffffffe0e0e09999994d4d4d", + "b2182bd6604df4a582fddbc7e0e0e0bababa8787874d4d4d", + "b2182bd6604df4a582fddbc7ffffffe0e0e0bababa8787874d4d4d", + "67001fb2182bd6604df4a582fddbc7e0e0e0bababa8787874d4d4d1a1a1a", + "67001fb2182bd6604df4a582fddbc7ffffffe0e0e0bababa8787874d4d4d1a1a1a" +).map(colors); - arc.startAngle = function(_) { - return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$b(+_), arc) : startAngle; - }; +var RdGy = ramp$1(scheme$l); - arc.endAngle = function(_) { - return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$b(+_), arc) : endAngle; - }; +var scheme$k = new Array(3).concat( + "fc8d59ffffbf91bfdb", + "d7191cfdae61abd9e92c7bb6", + "d7191cfdae61ffffbfabd9e92c7bb6", + "d73027fc8d59fee090e0f3f891bfdb4575b4", + "d73027fc8d59fee090ffffbfe0f3f891bfdb4575b4", + "d73027f46d43fdae61fee090e0f3f8abd9e974add14575b4", + "d73027f46d43fdae61fee090ffffbfe0f3f8abd9e974add14575b4", + "a50026d73027f46d43fdae61fee090e0f3f8abd9e974add14575b4313695", + "a50026d73027f46d43fdae61fee090ffffbfe0f3f8abd9e974add14575b4313695" +).map(colors); + +var RdYlBu = ramp$1(scheme$k); + +var scheme$j = new Array(3).concat( + "fc8d59ffffbf91cf60", + "d7191cfdae61a6d96a1a9641", + "d7191cfdae61ffffbfa6d96a1a9641", + "d73027fc8d59fee08bd9ef8b91cf601a9850", + "d73027fc8d59fee08bffffbfd9ef8b91cf601a9850", + "d73027f46d43fdae61fee08bd9ef8ba6d96a66bd631a9850", + "d73027f46d43fdae61fee08bffffbfd9ef8ba6d96a66bd631a9850", + "a50026d73027f46d43fdae61fee08bd9ef8ba6d96a66bd631a9850006837", + "a50026d73027f46d43fdae61fee08bffffbfd9ef8ba6d96a66bd631a9850006837" +).map(colors); - arc.padAngle = function(_) { - return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant$b(+_), arc) : padAngle; - }; +var RdYlGn = ramp$1(scheme$j); - arc.context = function(_) { - return arguments.length ? ((context = _ == null ? null : _), arc) : context; - }; +var scheme$i = new Array(3).concat( + "fc8d59ffffbf99d594", + "d7191cfdae61abdda42b83ba", + "d7191cfdae61ffffbfabdda42b83ba", + "d53e4ffc8d59fee08be6f59899d5943288bd", + "d53e4ffc8d59fee08bffffbfe6f59899d5943288bd", + "d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd", + "d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd", + "9e0142d53e4ff46d43fdae61fee08be6f598abdda466c2a53288bd5e4fa2", + "9e0142d53e4ff46d43fdae61fee08bffffbfe6f598abdda466c2a53288bd5e4fa2" +).map(colors); - return arc; -} +var Spectral = ramp$1(scheme$i); -function Linear(context) { - this._context = context; -} +var scheme$h = new Array(3).concat( + "e5f5f999d8c92ca25f", + "edf8fbb2e2e266c2a4238b45", + "edf8fbb2e2e266c2a42ca25f006d2c", + "edf8fbccece699d8c966c2a42ca25f006d2c", + "edf8fbccece699d8c966c2a441ae76238b45005824", + "f7fcfde5f5f9ccece699d8c966c2a441ae76238b45005824", + "f7fcfde5f5f9ccece699d8c966c2a441ae76238b45006d2c00441b" +).map(colors); -Linear.prototype = { - areaStart: function() { - this._line = 0; - }, - areaEnd: function() { - this._line = NaN; - }, - lineStart: function() { - this._point = 0; - }, - lineEnd: function() { - if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); - this._line = 1 - this._line; - }, - point: function(x, y) { - x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; - case 1: this._point = 2; // proceed - default: this._context.lineTo(x, y); break; - } - } -}; +var BuGn = ramp$1(scheme$h); -function curveLinear(context) { - return new Linear(context); -} +var scheme$g = new Array(3).concat( + "e0ecf49ebcda8856a7", + "edf8fbb3cde38c96c688419d", + "edf8fbb3cde38c96c68856a7810f7c", + "edf8fbbfd3e69ebcda8c96c68856a7810f7c", + "edf8fbbfd3e69ebcda8c96c68c6bb188419d6e016b", + "f7fcfde0ecf4bfd3e69ebcda8c96c68c6bb188419d6e016b", + "f7fcfde0ecf4bfd3e69ebcda8c96c68c6bb188419d810f7c4d004b" +).map(colors); -function x$3(p) { - return p[0]; -} +var BuPu = ramp$1(scheme$g); -function y$3(p) { - return p[1]; -} +var scheme$f = new Array(3).concat( + "e0f3dba8ddb543a2ca", + "f0f9e8bae4bc7bccc42b8cbe", + "f0f9e8bae4bc7bccc443a2ca0868ac", + "f0f9e8ccebc5a8ddb57bccc443a2ca0868ac", + "f0f9e8ccebc5a8ddb57bccc44eb3d32b8cbe08589e", + "f7fcf0e0f3dbccebc5a8ddb57bccc44eb3d32b8cbe08589e", + "f7fcf0e0f3dbccebc5a8ddb57bccc44eb3d32b8cbe0868ac084081" +).map(colors); -function line() { - var x = x$3, - y = y$3, - defined = constant$b(true), - context = null, - curve = curveLinear, - output = null; +var GnBu = ramp$1(scheme$f); - function line(data) { - var i, - n = data.length, - d, - defined0 = false, - buffer; +var scheme$e = new Array(3).concat( + "fee8c8fdbb84e34a33", + "fef0d9fdcc8afc8d59d7301f", + "fef0d9fdcc8afc8d59e34a33b30000", + "fef0d9fdd49efdbb84fc8d59e34a33b30000", + "fef0d9fdd49efdbb84fc8d59ef6548d7301f990000", + "fff7ecfee8c8fdd49efdbb84fc8d59ef6548d7301f990000", + "fff7ecfee8c8fdd49efdbb84fc8d59ef6548d7301fb300007f0000" +).map(colors); - if (context == null) output = curve(buffer = path()); +var OrRd = ramp$1(scheme$e); - for (i = 0; i <= n; ++i) { - if (!(i < n && defined(d = data[i], i, data)) === defined0) { - if (defined0 = !defined0) output.lineStart(); - else output.lineEnd(); - } - if (defined0) output.point(+x(d, i, data), +y(d, i, data)); - } +var scheme$d = new Array(3).concat( + "ece2f0a6bddb1c9099", + "f6eff7bdc9e167a9cf02818a", + "f6eff7bdc9e167a9cf1c9099016c59", + "f6eff7d0d1e6a6bddb67a9cf1c9099016c59", + "f6eff7d0d1e6a6bddb67a9cf3690c002818a016450", + "fff7fbece2f0d0d1e6a6bddb67a9cf3690c002818a016450", + "fff7fbece2f0d0d1e6a6bddb67a9cf3690c002818a016c59014636" +).map(colors); - if (buffer) return output = null, buffer + "" || null; - } +var PuBuGn = ramp$1(scheme$d); - line.x = function(_) { - return arguments.length ? (x = typeof _ === "function" ? _ : constant$b(+_), line) : x; - }; +var scheme$c = new Array(3).concat( + "ece7f2a6bddb2b8cbe", + "f1eef6bdc9e174a9cf0570b0", + "f1eef6bdc9e174a9cf2b8cbe045a8d", + "f1eef6d0d1e6a6bddb74a9cf2b8cbe045a8d", + "f1eef6d0d1e6a6bddb74a9cf3690c00570b0034e7b", + "fff7fbece7f2d0d1e6a6bddb74a9cf3690c00570b0034e7b", + "fff7fbece7f2d0d1e6a6bddb74a9cf3690c00570b0045a8d023858" +).map(colors); - line.y = function(_) { - return arguments.length ? (y = typeof _ === "function" ? _ : constant$b(+_), line) : y; - }; +var PuBu = ramp$1(scheme$c); - line.defined = function(_) { - return arguments.length ? (defined = typeof _ === "function" ? _ : constant$b(!!_), line) : defined; - }; +var scheme$b = new Array(3).concat( + "e7e1efc994c7dd1c77", + "f1eef6d7b5d8df65b0ce1256", + "f1eef6d7b5d8df65b0dd1c77980043", + "f1eef6d4b9dac994c7df65b0dd1c77980043", + "f1eef6d4b9dac994c7df65b0e7298ace125691003f", + "f7f4f9e7e1efd4b9dac994c7df65b0e7298ace125691003f", + "f7f4f9e7e1efd4b9dac994c7df65b0e7298ace125698004367001f" +).map(colors); - line.curve = function(_) { - return arguments.length ? (curve = _, context != null && (output = curve(context)), line) : curve; - }; +var PuRd = ramp$1(scheme$b); - line.context = function(_) { - return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), line) : context; - }; +var scheme$a = new Array(3).concat( + "fde0ddfa9fb5c51b8a", + "feebe2fbb4b9f768a1ae017e", + "feebe2fbb4b9f768a1c51b8a7a0177", + "feebe2fcc5c0fa9fb5f768a1c51b8a7a0177", + "feebe2fcc5c0fa9fb5f768a1dd3497ae017e7a0177", + "fff7f3fde0ddfcc5c0fa9fb5f768a1dd3497ae017e7a0177", + "fff7f3fde0ddfcc5c0fa9fb5f768a1dd3497ae017e7a017749006a" +).map(colors); - return line; -} +var RdPu = ramp$1(scheme$a); -function area$3() { - var x0 = x$3, - x1 = null, - y0 = constant$b(0), - y1 = y$3, - defined = constant$b(true), - context = null, - curve = curveLinear, - output = null; +var scheme$9 = new Array(3).concat( + "edf8b17fcdbb2c7fb8", + "ffffcca1dab441b6c4225ea8", + "ffffcca1dab441b6c42c7fb8253494", + "ffffccc7e9b47fcdbb41b6c42c7fb8253494", + "ffffccc7e9b47fcdbb41b6c41d91c0225ea80c2c84", + "ffffd9edf8b1c7e9b47fcdbb41b6c41d91c0225ea80c2c84", + "ffffd9edf8b1c7e9b47fcdbb41b6c41d91c0225ea8253494081d58" +).map(colors); - function area(data) { - var i, - j, - k, - n = data.length, - d, - defined0 = false, - buffer, - x0z = new Array(n), - y0z = new Array(n); +var YlGnBu = ramp$1(scheme$9); - if (context == null) output = curve(buffer = path()); +var scheme$8 = new Array(3).concat( + "f7fcb9addd8e31a354", + "ffffccc2e69978c679238443", + "ffffccc2e69978c67931a354006837", + "ffffccd9f0a3addd8e78c67931a354006837", + "ffffccd9f0a3addd8e78c67941ab5d238443005a32", + "ffffe5f7fcb9d9f0a3addd8e78c67941ab5d238443005a32", + "ffffe5f7fcb9d9f0a3addd8e78c67941ab5d238443006837004529" +).map(colors); - for (i = 0; i <= n; ++i) { - if (!(i < n && defined(d = data[i], i, data)) === defined0) { - if (defined0 = !defined0) { - j = i; - output.areaStart(); - output.lineStart(); - } else { - output.lineEnd(); - output.lineStart(); - for (k = i - 1; k >= j; --k) { - output.point(x0z[k], y0z[k]); - } - output.lineEnd(); - output.areaEnd(); - } - } - if (defined0) { - x0z[i] = +x0(d, i, data), y0z[i] = +y0(d, i, data); - output.point(x1 ? +x1(d, i, data) : x0z[i], y1 ? +y1(d, i, data) : y0z[i]); - } - } +var YlGn = ramp$1(scheme$8); - if (buffer) return output = null, buffer + "" || null; - } +var scheme$7 = new Array(3).concat( + "fff7bcfec44fd95f0e", + "ffffd4fed98efe9929cc4c02", + "ffffd4fed98efe9929d95f0e993404", + "ffffd4fee391fec44ffe9929d95f0e993404", + "ffffd4fee391fec44ffe9929ec7014cc4c028c2d04", + "ffffe5fff7bcfee391fec44ffe9929ec7014cc4c028c2d04", + "ffffe5fff7bcfee391fec44ffe9929ec7014cc4c02993404662506" +).map(colors); - function arealine() { - return line().defined(defined).curve(curve).context(context); - } +var YlOrBr = ramp$1(scheme$7); - area.x = function(_) { - return arguments.length ? (x0 = typeof _ === "function" ? _ : constant$b(+_), x1 = null, area) : x0; - }; +var scheme$6 = new Array(3).concat( + "ffeda0feb24cf03b20", + "ffffb2fecc5cfd8d3ce31a1c", + "ffffb2fecc5cfd8d3cf03b20bd0026", + "ffffb2fed976feb24cfd8d3cf03b20bd0026", + "ffffb2fed976feb24cfd8d3cfc4e2ae31a1cb10026", + "ffffccffeda0fed976feb24cfd8d3cfc4e2ae31a1cb10026", + "ffffccffeda0fed976feb24cfd8d3cfc4e2ae31a1cbd0026800026" +).map(colors); - area.x0 = function(_) { - return arguments.length ? (x0 = typeof _ === "function" ? _ : constant$b(+_), area) : x0; - }; +var YlOrRd = ramp$1(scheme$6); - area.x1 = function(_) { - return arguments.length ? (x1 = _ == null ? null : typeof _ === "function" ? _ : constant$b(+_), area) : x1; - }; +var scheme$5 = new Array(3).concat( + "deebf79ecae13182bd", + "eff3ffbdd7e76baed62171b5", + "eff3ffbdd7e76baed63182bd08519c", + "eff3ffc6dbef9ecae16baed63182bd08519c", + "eff3ffc6dbef9ecae16baed64292c62171b5084594", + "f7fbffdeebf7c6dbef9ecae16baed64292c62171b5084594", + "f7fbffdeebf7c6dbef9ecae16baed64292c62171b508519c08306b" +).map(colors); - area.y = function(_) { - return arguments.length ? (y0 = typeof _ === "function" ? _ : constant$b(+_), y1 = null, area) : y0; - }; +var Blues = ramp$1(scheme$5); - area.y0 = function(_) { - return arguments.length ? (y0 = typeof _ === "function" ? _ : constant$b(+_), area) : y0; - }; +var scheme$4 = new Array(3).concat( + "e5f5e0a1d99b31a354", + "edf8e9bae4b374c476238b45", + "edf8e9bae4b374c47631a354006d2c", + "edf8e9c7e9c0a1d99b74c47631a354006d2c", + "edf8e9c7e9c0a1d99b74c47641ab5d238b45005a32", + "f7fcf5e5f5e0c7e9c0a1d99b74c47641ab5d238b45005a32", + "f7fcf5e5f5e0c7e9c0a1d99b74c47641ab5d238b45006d2c00441b" +).map(colors); - area.y1 = function(_) { - return arguments.length ? (y1 = _ == null ? null : typeof _ === "function" ? _ : constant$b(+_), area) : y1; - }; +var Greens = ramp$1(scheme$4); - area.lineX0 = - area.lineY0 = function() { - return arealine().x(x0).y(y0); - }; +var scheme$3 = new Array(3).concat( + "f0f0f0bdbdbd636363", + "f7f7f7cccccc969696525252", + "f7f7f7cccccc969696636363252525", + "f7f7f7d9d9d9bdbdbd969696636363252525", + "f7f7f7d9d9d9bdbdbd969696737373525252252525", + "fffffff0f0f0d9d9d9bdbdbd969696737373525252252525", + "fffffff0f0f0d9d9d9bdbdbd969696737373525252252525000000" +).map(colors); - area.lineY1 = function() { - return arealine().x(x0).y(y1); - }; +var Greys = ramp$1(scheme$3); - area.lineX1 = function() { - return arealine().x(x1).y(y0); - }; +var scheme$2 = new Array(3).concat( + "efedf5bcbddc756bb1", + "f2f0f7cbc9e29e9ac86a51a3", + "f2f0f7cbc9e29e9ac8756bb154278f", + "f2f0f7dadaebbcbddc9e9ac8756bb154278f", + "f2f0f7dadaebbcbddc9e9ac8807dba6a51a34a1486", + "fcfbfdefedf5dadaebbcbddc9e9ac8807dba6a51a34a1486", + "fcfbfdefedf5dadaebbcbddc9e9ac8807dba6a51a354278f3f007d" +).map(colors); - area.defined = function(_) { - return arguments.length ? (defined = typeof _ === "function" ? _ : constant$b(!!_), area) : defined; - }; +var Purples = ramp$1(scheme$2); - area.curve = function(_) { - return arguments.length ? (curve = _, context != null && (output = curve(context)), area) : curve; - }; +var scheme$1 = new Array(3).concat( + "fee0d2fc9272de2d26", + "fee5d9fcae91fb6a4acb181d", + "fee5d9fcae91fb6a4ade2d26a50f15", + "fee5d9fcbba1fc9272fb6a4ade2d26a50f15", + "fee5d9fcbba1fc9272fb6a4aef3b2ccb181d99000d", + "fff5f0fee0d2fcbba1fc9272fb6a4aef3b2ccb181d99000d", + "fff5f0fee0d2fcbba1fc9272fb6a4aef3b2ccb181da50f1567000d" +).map(colors); - area.context = function(_) { - return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), area) : context; - }; +var Reds = ramp$1(scheme$1); - return area; -} +var scheme = new Array(3).concat( + "fee6cefdae6be6550d", + "feeddefdbe85fd8d3cd94701", + "feeddefdbe85fd8d3ce6550da63603", + "feeddefdd0a2fdae6bfd8d3ce6550da63603", + "feeddefdd0a2fdae6bfd8d3cf16913d948018c2d04", + "fff5ebfee6cefdd0a2fdae6bfd8d3cf16913d948018c2d04", + "fff5ebfee6cefdd0a2fdae6bfd8d3cf16913d94801a636037f2704" +).map(colors); -function descending$1(a, b) { - return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN; -} +var Oranges = ramp$1(scheme); -function identity$8(d) { - return d; +function cividis(t) { + t = Math.max(0, Math.min(1, t)); + return "rgb(" + + Math.max(0, Math.min(255, Math.round(-4.54 - t * (35.34 - t * (2381.73 - t * (6402.7 - t * (7024.72 - t * 2710.57))))))) + ", " + + Math.max(0, Math.min(255, Math.round(32.49 + t * (170.73 + t * (52.82 - t * (131.46 - t * (176.58 - t * 67.37))))))) + ", " + + Math.max(0, Math.min(255, Math.round(81.24 + t * (442.36 - t * (2482.43 - t * (6167.24 - t * (6614.94 - t * 2475.67))))))) + + ")"; } -function pie() { - var value = identity$8, - sortValues = descending$1, - sort = null, - startAngle = constant$b(0), - endAngle = constant$b(tau$4), - padAngle = constant$b(0); - - function pie(data) { - var i, - n = data.length, - j, - k, - sum = 0, - index = new Array(n), - arcs = new Array(n), - a0 = +startAngle.apply(this, arguments), - da = Math.min(tau$4, Math.max(-tau$4, endAngle.apply(this, arguments) - a0)), - a1, - p = Math.min(Math.abs(da) / n, padAngle.apply(this, arguments)), - pa = p * (da < 0 ? -1 : 1), - v; +var cubehelix = cubehelixLong(cubehelix$3(300, 0.5, 0.0), cubehelix$3(-240, 0.5, 1.0)); - for (i = 0; i < n; ++i) { - if ((v = arcs[index[i] = i] = +value(data[i], i, data)) > 0) { - sum += v; - } - } +var warm = cubehelixLong(cubehelix$3(-100, 0.75, 0.35), cubehelix$3(80, 1.50, 0.8)); - // Optionally sort the arcs by previously-computed values or by data. - if (sortValues != null) index.sort(function(i, j) { return sortValues(arcs[i], arcs[j]); }); - else if (sort != null) index.sort(function(i, j) { return sort(data[i], data[j]); }); +var cool = cubehelixLong(cubehelix$3(260, 0.75, 0.35), cubehelix$3(80, 1.50, 0.8)); - // Compute the arcs! They are stored in the original data's order. - for (i = 0, k = sum ? (da - n * pa) / sum : 0; i < n; ++i, a0 = a1) { - j = index[i], v = arcs[j], a1 = a0 + (v > 0 ? v * k : 0) + pa, arcs[j] = { - data: data[j], - index: i, - value: v, - startAngle: a0, - endAngle: a1, - padAngle: p - }; - } +var c$2 = cubehelix$3(); - return arcs; - } +function rainbow(t) { + if (t < 0 || t > 1) t -= Math.floor(t); + var ts = Math.abs(t - 0.5); + c$2.h = 360 * t - 100; + c$2.s = 1.5 - 1.5 * ts; + c$2.l = 0.8 - 0.9 * ts; + return c$2 + ""; +} - pie.value = function(_) { - return arguments.length ? (value = typeof _ === "function" ? _ : constant$b(+_), pie) : value; - }; +var c$1 = rgb(), + pi_1_3 = Math.PI / 3, + pi_2_3 = Math.PI * 2 / 3; - pie.sortValues = function(_) { - return arguments.length ? (sortValues = _, sort = null, pie) : sortValues; - }; +function sinebow(t) { + var x; + t = (0.5 - t) * Math.PI; + c$1.r = 255 * (x = Math.sin(t)) * x; + c$1.g = 255 * (x = Math.sin(t + pi_1_3)) * x; + c$1.b = 255 * (x = Math.sin(t + pi_2_3)) * x; + return c$1 + ""; +} - pie.sort = function(_) { - return arguments.length ? (sort = _, sortValues = null, pie) : sort; - }; +function turbo(t) { + t = Math.max(0, Math.min(1, t)); + return "rgb(" + + Math.max(0, Math.min(255, Math.round(34.61 + t * (1172.33 - t * (10793.56 - t * (33300.12 - t * (38394.49 - t * 14825.05))))))) + ", " + + Math.max(0, Math.min(255, Math.round(23.31 + t * (557.33 + t * (1225.33 - t * (3574.96 - t * (1073.77 + t * 707.56))))))) + ", " + + Math.max(0, Math.min(255, Math.round(27.2 + t * (3211.1 - t * (15327.97 - t * (27814 - t * (22569.18 - t * 6838.66))))))) + + ")"; +} - pie.startAngle = function(_) { - return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$b(+_), pie) : startAngle; +function ramp(range) { + var n = range.length; + return function(t) { + return range[Math.max(0, Math.min(n - 1, Math.floor(t * n)))]; }; +} - pie.endAngle = function(_) { - return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$b(+_), pie) : endAngle; - }; +var viridis = ramp(colors("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")); - pie.padAngle = function(_) { - return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant$b(+_), pie) : padAngle; - }; +var magma = ramp(colors("00000401000501010601010802010902020b02020d03030f03031204041405041606051806051a07061c08071e0907200a08220b09240c09260d0a290e0b2b100b2d110c2f120d31130d34140e36150e38160f3b180f3d19103f1a10421c10441d11471e114920114b21114e22115024125325125527125829115a2a115c2c115f2d11612f116331116533106734106936106b38106c390f6e3b0f703d0f713f0f72400f74420f75440f764510774710784910784a10794c117a4e117b4f127b51127c52137c54137d56147d57157e59157e5a167e5c167f5d177f5f187f601880621980641a80651a80671b80681c816a1c816b1d816d1d816e1e81701f81721f817320817521817621817822817922827b23827c23827e24828025828125818326818426818627818827818928818b29818c29818e2a81902a81912b81932b80942c80962c80982d80992d809b2e7f9c2e7f9e2f7fa02f7fa1307ea3307ea5317ea6317da8327daa337dab337cad347cae347bb0357bb2357bb3367ab5367ab73779b83779ba3878bc3978bd3977bf3a77c03a76c23b75c43c75c53c74c73d73c83e73ca3e72cc3f71cd4071cf4070d0416fd2426fd3436ed5446dd6456cd8456cd9466bdb476adc4869de4968df4a68e04c67e24d66e34e65e44f64e55064e75263e85362e95462ea5661eb5760ec5860ed5a5fee5b5eef5d5ef05f5ef1605df2625df2645cf3655cf4675cf4695cf56b5cf66c5cf66e5cf7705cf7725cf8745cf8765cf9785df9795df97b5dfa7d5efa7f5efa815ffb835ffb8560fb8761fc8961fc8a62fc8c63fc8e64fc9065fd9266fd9467fd9668fd9869fd9a6afd9b6bfe9d6cfe9f6dfea16efea36ffea571fea772fea973feaa74feac76feae77feb078feb27afeb47bfeb67cfeb77efeb97ffebb81febd82febf84fec185fec287fec488fec68afec88cfeca8dfecc8ffecd90fecf92fed194fed395fed597fed799fed89afdda9cfddc9efddea0fde0a1fde2a3fde3a5fde5a7fde7a9fde9aafdebacfcecaefceeb0fcf0b2fcf2b4fcf4b6fcf6b8fcf7b9fcf9bbfcfbbdfcfdbf")); - return pie; -} +var inferno = ramp(colors("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")); -var curveRadialLinear = curveRadial(curveLinear); +var plasma = ramp(colors("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")); -function Radial(curve) { - this._curve = curve; +function constant$1(x) { + return function constant() { + return x; + }; } -Radial.prototype = { - areaStart: function() { - this._curve.areaStart(); - }, - areaEnd: function() { - this._curve.areaEnd(); - }, - lineStart: function() { - this._curve.lineStart(); - }, - lineEnd: function() { - this._curve.lineEnd(); - }, - point: function(a, r) { - this._curve.point(r * Math.sin(a), r * -Math.cos(a)); - } -}; +var abs = Math.abs; +var atan2 = Math.atan2; +var cos = Math.cos; +var max = Math.max; +var min = Math.min; +var sin = Math.sin; +var sqrt = Math.sqrt; -function curveRadial(curve) { +var epsilon = 1e-12; +var pi = Math.PI; +var halfPi = pi / 2; +var tau = 2 * pi; - function radial(context) { - return new Radial(curve(context)); - } +function acos(x) { + return x > 1 ? 0 : x < -1 ? pi : Math.acos(x); +} - radial._curve = curve; +function asin(x) { + return x >= 1 ? halfPi : x <= -1 ? -halfPi : Math.asin(x); +} - return radial; +function arcInnerRadius(d) { + return d.innerRadius; } -function lineRadial(l) { - var c = l.curve; +function arcOuterRadius(d) { + return d.outerRadius; +} - l.angle = l.x, delete l.x; - l.radius = l.y, delete l.y; +function arcStartAngle(d) { + return d.startAngle; +} - l.curve = function(_) { - return arguments.length ? c(curveRadial(_)) : c()._curve; - }; +function arcEndAngle(d) { + return d.endAngle; +} - return l; +function arcPadAngle(d) { + return d && d.padAngle; // Note: optional! } -function lineRadial$1() { - return lineRadial(line().curve(curveRadialLinear)); +function intersect(x0, y0, x1, y1, x2, y2, x3, y3) { + var x10 = x1 - x0, y10 = y1 - y0, + x32 = x3 - x2, y32 = y3 - y2, + t = y32 * x10 - x32 * y10; + if (t * t < epsilon) return; + t = (x32 * (y0 - y2) - y32 * (x0 - x2)) / t; + return [x0 + t * x10, y0 + t * y10]; } -function areaRadial() { - var a = area$3().curve(curveRadialLinear), - c = a.curve, - x0 = a.lineX0, - x1 = a.lineX1, - y0 = a.lineY0, - y1 = a.lineY1; +// Compute perpendicular offset line of length rc. +// http://mathworld.wolfram.com/Circle-LineIntersection.html +function cornerTangents(x0, y0, x1, y1, r1, rc, cw) { + var x01 = x0 - x1, + y01 = y0 - y1, + lo = (cw ? rc : -rc) / sqrt(x01 * x01 + y01 * y01), + ox = lo * y01, + oy = -lo * x01, + x11 = x0 + ox, + y11 = y0 + oy, + x10 = x1 + ox, + y10 = y1 + oy, + x00 = (x11 + x10) / 2, + y00 = (y11 + y10) / 2, + dx = x10 - x11, + dy = y10 - y11, + d2 = dx * dx + dy * dy, + r = r1 - rc, + D = x11 * y10 - x10 * y11, + d = (dy < 0 ? -1 : 1) * sqrt(max(0, r * r * d2 - D * D)), + cx0 = (D * dy - dx * d) / d2, + cy0 = (-D * dx - dy * d) / d2, + cx1 = (D * dy + dx * d) / d2, + cy1 = (-D * dx + dy * d) / d2, + dx0 = cx0 - x00, + dy0 = cy0 - y00, + dx1 = cx1 - x00, + dy1 = cy1 - y00; - a.angle = a.x, delete a.x; - a.startAngle = a.x0, delete a.x0; - a.endAngle = a.x1, delete a.x1; - a.radius = a.y, delete a.y; - a.innerRadius = a.y0, delete a.y0; - a.outerRadius = a.y1, delete a.y1; - a.lineStartAngle = function() { return lineRadial(x0()); }, delete a.lineX0; - a.lineEndAngle = function() { return lineRadial(x1()); }, delete a.lineX1; - a.lineInnerRadius = function() { return lineRadial(y0()); }, delete a.lineY0; - a.lineOuterRadius = function() { return lineRadial(y1()); }, delete a.lineY1; + // Pick the closer of the two intersection points. + // TODO Is there a faster way to determine which intersection to use? + if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1; - a.curve = function(_) { - return arguments.length ? c(curveRadial(_)) : c()._curve; + return { + cx: cx0, + cy: cy0, + x01: -ox, + y01: -oy, + x11: cx0 * (r1 / r - 1), + y11: cy0 * (r1 / r - 1) }; - - return a; -} - -function pointRadial(x, y) { - return [(y = +y) * Math.cos(x -= Math.PI / 2), y * Math.sin(x)]; -} - -var slice$6 = Array.prototype.slice; - -function linkSource(d) { - return d.source; -} - -function linkTarget(d) { - return d.target; } -function link$2(curve) { - var source = linkSource, - target = linkTarget, - x = x$3, - y = y$3, +function arc() { + var innerRadius = arcInnerRadius, + outerRadius = arcOuterRadius, + cornerRadius = constant$1(0), + padRadius = null, + startAngle = arcStartAngle, + endAngle = arcEndAngle, + padAngle = arcPadAngle, context = null; - function link() { - var buffer, argv = slice$6.call(arguments), s = source.apply(this, argv), t = target.apply(this, argv); + function arc() { + var buffer, + r, + r0 = +innerRadius.apply(this, arguments), + r1 = +outerRadius.apply(this, arguments), + a0 = startAngle.apply(this, arguments) - halfPi, + a1 = endAngle.apply(this, arguments) - halfPi, + da = abs(a1 - a0), + cw = a1 > a0; + if (!context) context = buffer = path(); - curve(context, +x.apply(this, (argv[0] = s, argv)), +y.apply(this, argv), +x.apply(this, (argv[0] = t, argv)), +y.apply(this, argv)); - if (buffer) return context = null, buffer + "" || null; - } - link.source = function(_) { - return arguments.length ? (source = _, link) : source; - }; + // Ensure that the outer radius is always larger than the inner radius. + if (r1 < r0) r = r1, r1 = r0, r0 = r; - link.target = function(_) { - return arguments.length ? (target = _, link) : target; - }; + // Is it a point? + if (!(r1 > epsilon)) context.moveTo(0, 0); - link.x = function(_) { - return arguments.length ? (x = typeof _ === "function" ? _ : constant$b(+_), link) : x; - }; + // Or is it a circle or annulus? + else if (da > tau - epsilon) { + context.moveTo(r1 * cos(a0), r1 * sin(a0)); + context.arc(0, 0, r1, a0, a1, !cw); + if (r0 > epsilon) { + context.moveTo(r0 * cos(a1), r0 * sin(a1)); + context.arc(0, 0, r0, a1, a0, cw); + } + } - link.y = function(_) { - return arguments.length ? (y = typeof _ === "function" ? _ : constant$b(+_), link) : y; - }; + // Or is it a circular or annular sector? + else { + var a01 = a0, + a11 = a1, + a00 = a0, + a10 = a1, + da0 = da, + da1 = da, + ap = padAngle.apply(this, arguments) / 2, + rp = (ap > epsilon) && (padRadius ? +padRadius.apply(this, arguments) : sqrt(r0 * r0 + r1 * r1)), + rc = min(abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments)), + rc0 = rc, + rc1 = rc, + t0, + t1; - link.context = function(_) { - return arguments.length ? ((context = _ == null ? null : _), link) : context; - }; + // Apply padding? Note that since r1 ≥ r0, da1 ≥ da0. + if (rp > epsilon) { + var p0 = asin(rp / r0 * sin(ap)), + p1 = asin(rp / r1 * sin(ap)); + if ((da0 -= p0 * 2) > epsilon) p0 *= (cw ? 1 : -1), a00 += p0, a10 -= p0; + else da0 = 0, a00 = a10 = (a0 + a1) / 2; + if ((da1 -= p1 * 2) > epsilon) p1 *= (cw ? 1 : -1), a01 += p1, a11 -= p1; + else da1 = 0, a01 = a11 = (a0 + a1) / 2; + } - return link; -} + var x01 = r1 * cos(a01), + y01 = r1 * sin(a01), + x10 = r0 * cos(a10), + y10 = r0 * sin(a10); -function curveHorizontal(context, x0, y0, x1, y1) { - context.moveTo(x0, y0); - context.bezierCurveTo(x0 = (x0 + x1) / 2, y0, x0, y1, x1, y1); -} + // Apply rounded corners? + if (rc > epsilon) { + var x11 = r1 * cos(a11), + y11 = r1 * sin(a11), + x00 = r0 * cos(a00), + y00 = r0 * sin(a00), + oc; -function curveVertical(context, x0, y0, x1, y1) { - context.moveTo(x0, y0); - context.bezierCurveTo(x0, y0 = (y0 + y1) / 2, x1, y0, x1, y1); -} + // Restrict the corner radius according to the sector angle. + if (da < pi && (oc = intersect(x01, y01, x00, y00, x11, y11, x10, y10))) { + var ax = x01 - oc[0], + ay = y01 - oc[1], + bx = x11 - oc[0], + by = y11 - oc[1], + kc = 1 / sin(acos((ax * bx + ay * by) / (sqrt(ax * ax + ay * ay) * sqrt(bx * bx + by * by))) / 2), + lc = sqrt(oc[0] * oc[0] + oc[1] * oc[1]); + rc0 = min(rc, (r0 - lc) / (kc - 1)); + rc1 = min(rc, (r1 - lc) / (kc + 1)); + } + } -function curveRadial$1(context, x0, y0, x1, y1) { - var p0 = pointRadial(x0, y0), - p1 = pointRadial(x0, y0 = (y0 + y1) / 2), - p2 = pointRadial(x1, y0), - p3 = pointRadial(x1, y1); - context.moveTo(p0[0], p0[1]); - context.bezierCurveTo(p1[0], p1[1], p2[0], p2[1], p3[0], p3[1]); -} + // Is the sector collapsed to a line? + if (!(da1 > epsilon)) context.moveTo(x01, y01); -function linkHorizontal() { - return link$2(curveHorizontal); -} + // Does the sector’s outer ring have rounded corners? + else if (rc1 > epsilon) { + t0 = cornerTangents(x00, y00, x01, y01, r1, rc1, cw); + t1 = cornerTangents(x11, y11, x10, y10, r1, rc1, cw); -function linkVertical() { - return link$2(curveVertical); -} + context.moveTo(t0.cx + t0.x01, t0.cy + t0.y01); -function linkRadial() { - var l = link$2(curveRadial$1); - l.angle = l.x, delete l.x; - l.radius = l.y, delete l.y; - return l; -} + // Have the corners merged? + if (rc1 < rc) context.arc(t0.cx, t0.cy, rc1, atan2(t0.y01, t0.x01), atan2(t1.y01, t1.x01), !cw); -var circle$2 = { - draw: function(context, size) { - var r = Math.sqrt(size / pi$4); - context.moveTo(r, 0); - context.arc(0, 0, r, 0, tau$4); - } -}; + // Otherwise, draw the two corners and the ring. + else { + context.arc(t0.cx, t0.cy, rc1, atan2(t0.y01, t0.x01), atan2(t0.y11, t0.x11), !cw); + context.arc(0, 0, r1, atan2(t0.cy + t0.y11, t0.cx + t0.x11), atan2(t1.cy + t1.y11, t1.cx + t1.x11), !cw); + context.arc(t1.cx, t1.cy, rc1, atan2(t1.y11, t1.x11), atan2(t1.y01, t1.x01), !cw); + } + } -var cross$2 = { - draw: function(context, size) { - var r = Math.sqrt(size / 5) / 2; - context.moveTo(-3 * r, -r); - context.lineTo(-r, -r); - context.lineTo(-r, -3 * r); - context.lineTo(r, -3 * r); - context.lineTo(r, -r); - context.lineTo(3 * r, -r); - context.lineTo(3 * r, r); - context.lineTo(r, r); - context.lineTo(r, 3 * r); - context.lineTo(-r, 3 * r); - context.lineTo(-r, r); - context.lineTo(-3 * r, r); - context.closePath(); - } -}; + // Or is the outer ring just a circular arc? + else context.moveTo(x01, y01), context.arc(0, 0, r1, a01, a11, !cw); -var tan30 = Math.sqrt(1 / 3), - tan30_2 = tan30 * 2; + // Is there no inner ring, and it’s a circular sector? + // Or perhaps it’s an annular sector collapsed due to padding? + if (!(r0 > epsilon) || !(da0 > epsilon)) context.lineTo(x10, y10); -var diamond = { - draw: function(context, size) { - var y = Math.sqrt(size / tan30_2), - x = y * tan30; - context.moveTo(0, -y); - context.lineTo(x, 0); - context.lineTo(0, y); - context.lineTo(-x, 0); - context.closePath(); - } -}; + // Does the sector’s inner ring (or point) have rounded corners? + else if (rc0 > epsilon) { + t0 = cornerTangents(x10, y10, x11, y11, r0, -rc0, cw); + t1 = cornerTangents(x01, y01, x00, y00, r0, -rc0, cw); -var ka = 0.89081309152928522810, - kr = Math.sin(pi$4 / 10) / Math.sin(7 * pi$4 / 10), - kx = Math.sin(tau$4 / 10) * kr, - ky = -Math.cos(tau$4 / 10) * kr; + context.lineTo(t0.cx + t0.x01, t0.cy + t0.y01); -var star = { - draw: function(context, size) { - var r = Math.sqrt(size * ka), - x = kx * r, - y = ky * r; - context.moveTo(0, -r); - context.lineTo(x, y); - for (var i = 1; i < 5; ++i) { - var a = tau$4 * i / 5, - c = Math.cos(a), - s = Math.sin(a); - context.lineTo(s * r, -c * r); - context.lineTo(c * x - s * y, s * x + c * y); - } - context.closePath(); - } -}; + // Have the corners merged? + if (rc0 < rc) context.arc(t0.cx, t0.cy, rc0, atan2(t0.y01, t0.x01), atan2(t1.y01, t1.x01), !cw); -var square = { - draw: function(context, size) { - var w = Math.sqrt(size), - x = -w / 2; - context.rect(x, x, w, w); - } -}; + // Otherwise, draw the two corners and the ring. + else { + context.arc(t0.cx, t0.cy, rc0, atan2(t0.y01, t0.x01), atan2(t0.y11, t0.x11), !cw); + context.arc(0, 0, r0, atan2(t0.cy + t0.y11, t0.cx + t0.x11), atan2(t1.cy + t1.y11, t1.cx + t1.x11), cw); + context.arc(t1.cx, t1.cy, rc0, atan2(t1.y11, t1.x11), atan2(t1.y01, t1.x01), !cw); + } + } -var sqrt3 = Math.sqrt(3); + // Or is the inner ring just a circular arc? + else context.arc(0, 0, r0, a10, a00, cw); + } -var triangle = { - draw: function(context, size) { - var y = -Math.sqrt(size / (sqrt3 * 3)); - context.moveTo(0, y * 2); - context.lineTo(-sqrt3 * y, -y); - context.lineTo(sqrt3 * y, -y); context.closePath(); - } -}; - -var c$2 = -0.5, - s = Math.sqrt(3) / 2, - k = 1 / Math.sqrt(12), - a = (k / 2 + 1) * 3; -var wye = { - draw: function(context, size) { - var r = Math.sqrt(size / a), - x0 = r / 2, - y0 = r * k, - x1 = x0, - y1 = r * k + r, - x2 = -x1, - y2 = y1; - context.moveTo(x0, y0); - context.lineTo(x1, y1); - context.lineTo(x2, y2); - context.lineTo(c$2 * x0 - s * y0, s * x0 + c$2 * y0); - context.lineTo(c$2 * x1 - s * y1, s * x1 + c$2 * y1); - context.lineTo(c$2 * x2 - s * y2, s * x2 + c$2 * y2); - context.lineTo(c$2 * x0 + s * y0, c$2 * y0 - s * x0); - context.lineTo(c$2 * x1 + s * y1, c$2 * y1 - s * x1); - context.lineTo(c$2 * x2 + s * y2, c$2 * y2 - s * x2); - context.closePath(); + if (buffer) return context = null, buffer + "" || null; } -}; -var symbols = [ - circle$2, - cross$2, - diamond, - square, - star, - triangle, - wye -]; + arc.centroid = function() { + var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, + a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - pi / 2; + return [cos(a) * r, sin(a) * r]; + }; + + arc.innerRadius = function(_) { + return arguments.length ? (innerRadius = typeof _ === "function" ? _ : constant$1(+_), arc) : innerRadius; + }; -function symbol() { - var type = constant$b(circle$2), - size = constant$b(64), - context = null; + arc.outerRadius = function(_) { + return arguments.length ? (outerRadius = typeof _ === "function" ? _ : constant$1(+_), arc) : outerRadius; + }; - function symbol() { - var buffer; - if (!context) context = buffer = path(); - type.apply(this, arguments).draw(context, +size.apply(this, arguments)); - if (buffer) return context = null, buffer + "" || null; - } + arc.cornerRadius = function(_) { + return arguments.length ? (cornerRadius = typeof _ === "function" ? _ : constant$1(+_), arc) : cornerRadius; + }; - symbol.type = function(_) { - return arguments.length ? (type = typeof _ === "function" ? _ : constant$b(_), symbol) : type; + arc.padRadius = function(_) { + return arguments.length ? (padRadius = _ == null ? null : typeof _ === "function" ? _ : constant$1(+_), arc) : padRadius; }; - symbol.size = function(_) { - return arguments.length ? (size = typeof _ === "function" ? _ : constant$b(+_), symbol) : size; + arc.startAngle = function(_) { + return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$1(+_), arc) : startAngle; }; - symbol.context = function(_) { - return arguments.length ? (context = _ == null ? null : _, symbol) : context; + arc.endAngle = function(_) { + return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$1(+_), arc) : endAngle; }; - return symbol; + arc.padAngle = function(_) { + return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant$1(+_), arc) : padAngle; + }; + + arc.context = function(_) { + return arguments.length ? ((context = _ == null ? null : _), arc) : context; + }; + + return arc; } -function noop$3() {} +var slice = Array.prototype.slice; -function point$2(that, x, y) { - that._context.bezierCurveTo( - (2 * that._x0 + that._x1) / 3, - (2 * that._y0 + that._y1) / 3, - (that._x0 + 2 * that._x1) / 3, - (that._y0 + 2 * that._y1) / 3, - (that._x0 + 4 * that._x1 + x) / 6, - (that._y0 + 4 * that._y1 + y) / 6 - ); +function array(x) { + return typeof x === "object" && "length" in x + ? x // Array, TypedArray, NodeList, array-like + : Array.from(x); // Map, Set, iterable, string, or anything else } -function Basis(context) { +function Linear(context) { this._context = context; } -Basis.prototype = { +Linear.prototype = { areaStart: function() { this._line = 0; }, @@ -15612,15 +17019,9 @@ Basis.prototype = { this._line = NaN; }, lineStart: function() { - this._x0 = this._x1 = - this._y0 = this._y1 = NaN; this._point = 0; }, lineEnd: function() { - switch (this._point) { - case 3: point$2(this, this._x1, this._y1); // proceed - case 2: this._context.lineTo(this._x1, this._y1); break; - } if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); this._line = 1 - this._line; }, @@ -15628,360 +17029,592 @@ Basis.prototype = { x = +x, y = +y; switch (this._point) { case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; - case 1: this._point = 2; break; - case 2: this._point = 3; this._context.lineTo((5 * this._x0 + this._x1) / 6, (5 * this._y0 + this._y1) / 6); // proceed - default: point$2(this, x, y); break; + case 1: this._point = 2; // proceed + default: this._context.lineTo(x, y); break; } - this._x0 = this._x1, this._x1 = x; - this._y0 = this._y1, this._y1 = y; } }; -function basis$2(context) { - return new Basis(context); +function curveLinear(context) { + return new Linear(context); } -function BasisClosed(context) { - this._context = context; +function x(p) { + return p[0]; } -BasisClosed.prototype = { - areaStart: noop$3, - areaEnd: noop$3, - lineStart: function() { - this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = - this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = NaN; - this._point = 0; - }, - lineEnd: function() { - switch (this._point) { - case 1: { - this._context.moveTo(this._x2, this._y2); - this._context.closePath(); - break; +function y(p) { + return p[1]; +} + +function line(x$1, y$1) { + var defined = constant$1(true), + context = null, + curve = curveLinear, + output = null; + + x$1 = typeof x$1 === "function" ? x$1 : (x$1 === undefined) ? x : constant$1(x$1); + y$1 = typeof y$1 === "function" ? y$1 : (y$1 === undefined) ? y : constant$1(y$1); + + function line(data) { + var i, + n = (data = array(data)).length, + d, + defined0 = false, + buffer; + + if (context == null) output = curve(buffer = path()); + + for (i = 0; i <= n; ++i) { + if (!(i < n && defined(d = data[i], i, data)) === defined0) { + if (defined0 = !defined0) output.lineStart(); + else output.lineEnd(); } - case 2: { - this._context.moveTo((this._x2 + 2 * this._x3) / 3, (this._y2 + 2 * this._y3) / 3); - this._context.lineTo((this._x3 + 2 * this._x2) / 3, (this._y3 + 2 * this._y2) / 3); - this._context.closePath(); - break; + if (defined0) output.point(+x$1(d, i, data), +y$1(d, i, data)); + } + + if (buffer) return output = null, buffer + "" || null; + } + + line.x = function(_) { + return arguments.length ? (x$1 = typeof _ === "function" ? _ : constant$1(+_), line) : x$1; + }; + + line.y = function(_) { + return arguments.length ? (y$1 = typeof _ === "function" ? _ : constant$1(+_), line) : y$1; + }; + + line.defined = function(_) { + return arguments.length ? (defined = typeof _ === "function" ? _ : constant$1(!!_), line) : defined; + }; + + line.curve = function(_) { + return arguments.length ? (curve = _, context != null && (output = curve(context)), line) : curve; + }; + + line.context = function(_) { + return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), line) : context; + }; + + return line; +} + +function area(x0, y0, y1) { + var x1 = null, + defined = constant$1(true), + context = null, + curve = curveLinear, + output = null; + + x0 = typeof x0 === "function" ? x0 : (x0 === undefined) ? x : constant$1(+x0); + y0 = typeof y0 === "function" ? y0 : (y0 === undefined) ? constant$1(0) : constant$1(+y0); + y1 = typeof y1 === "function" ? y1 : (y1 === undefined) ? y : constant$1(+y1); + + function area(data) { + var i, + j, + k, + n = (data = array(data)).length, + d, + defined0 = false, + buffer, + x0z = new Array(n), + y0z = new Array(n); + + if (context == null) output = curve(buffer = path()); + + for (i = 0; i <= n; ++i) { + if (!(i < n && defined(d = data[i], i, data)) === defined0) { + if (defined0 = !defined0) { + j = i; + output.areaStart(); + output.lineStart(); + } else { + output.lineEnd(); + output.lineStart(); + for (k = i - 1; k >= j; --k) { + output.point(x0z[k], y0z[k]); + } + output.lineEnd(); + output.areaEnd(); + } } - case 3: { - this.point(this._x2, this._y2); - this.point(this._x3, this._y3); - this.point(this._x4, this._y4); - break; + if (defined0) { + x0z[i] = +x0(d, i, data), y0z[i] = +y0(d, i, data); + output.point(x1 ? +x1(d, i, data) : x0z[i], y1 ? +y1(d, i, data) : y0z[i]); } } - }, - point: function(x, y) { - x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; this._x2 = x, this._y2 = y; break; - case 1: this._point = 2; this._x3 = x, this._y3 = y; break; - case 2: this._point = 3; this._x4 = x, this._y4 = y; this._context.moveTo((this._x0 + 4 * this._x1 + x) / 6, (this._y0 + 4 * this._y1 + y) / 6); break; - default: point$2(this, x, y); break; + + if (buffer) return output = null, buffer + "" || null; + } + + function arealine() { + return line().defined(defined).curve(curve).context(context); + } + + area.x = function(_) { + return arguments.length ? (x0 = typeof _ === "function" ? _ : constant$1(+_), x1 = null, area) : x0; + }; + + area.x0 = function(_) { + return arguments.length ? (x0 = typeof _ === "function" ? _ : constant$1(+_), area) : x0; + }; + + area.x1 = function(_) { + return arguments.length ? (x1 = _ == null ? null : typeof _ === "function" ? _ : constant$1(+_), area) : x1; + }; + + area.y = function(_) { + return arguments.length ? (y0 = typeof _ === "function" ? _ : constant$1(+_), y1 = null, area) : y0; + }; + + area.y0 = function(_) { + return arguments.length ? (y0 = typeof _ === "function" ? _ : constant$1(+_), area) : y0; + }; + + area.y1 = function(_) { + return arguments.length ? (y1 = _ == null ? null : typeof _ === "function" ? _ : constant$1(+_), area) : y1; + }; + + area.lineX0 = + area.lineY0 = function() { + return arealine().x(x0).y(y0); + }; + + area.lineY1 = function() { + return arealine().x(x0).y(y1); + }; + + area.lineX1 = function() { + return arealine().x(x1).y(y0); + }; + + area.defined = function(_) { + return arguments.length ? (defined = typeof _ === "function" ? _ : constant$1(!!_), area) : defined; + }; + + area.curve = function(_) { + return arguments.length ? (curve = _, context != null && (output = curve(context)), area) : curve; + }; + + area.context = function(_) { + return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), area) : context; + }; + + return area; +} + +function descending$1(a, b) { + return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN; +} + +function identity$1(d) { + return d; +} + +function pie() { + var value = identity$1, + sortValues = descending$1, + sort = null, + startAngle = constant$1(0), + endAngle = constant$1(tau), + padAngle = constant$1(0); + + function pie(data) { + var i, + n = (data = array(data)).length, + j, + k, + sum = 0, + index = new Array(n), + arcs = new Array(n), + a0 = +startAngle.apply(this, arguments), + da = Math.min(tau, Math.max(-tau, endAngle.apply(this, arguments) - a0)), + a1, + p = Math.min(Math.abs(da) / n, padAngle.apply(this, arguments)), + pa = p * (da < 0 ? -1 : 1), + v; + + for (i = 0; i < n; ++i) { + if ((v = arcs[index[i] = i] = +value(data[i], i, data)) > 0) { + sum += v; + } + } + + // Optionally sort the arcs by previously-computed values or by data. + if (sortValues != null) index.sort(function(i, j) { return sortValues(arcs[i], arcs[j]); }); + else if (sort != null) index.sort(function(i, j) { return sort(data[i], data[j]); }); + + // Compute the arcs! They are stored in the original data's order. + for (i = 0, k = sum ? (da - n * pa) / sum : 0; i < n; ++i, a0 = a1) { + j = index[i], v = arcs[j], a1 = a0 + (v > 0 ? v * k : 0) + pa, arcs[j] = { + data: data[j], + index: i, + value: v, + startAngle: a0, + endAngle: a1, + padAngle: p + }; } - this._x0 = this._x1, this._x1 = x; - this._y0 = this._y1, this._y1 = y; + + return arcs; } -}; -function basisClosed$1(context) { - return new BasisClosed(context); + pie.value = function(_) { + return arguments.length ? (value = typeof _ === "function" ? _ : constant$1(+_), pie) : value; + }; + + pie.sortValues = function(_) { + return arguments.length ? (sortValues = _, sort = null, pie) : sortValues; + }; + + pie.sort = function(_) { + return arguments.length ? (sort = _, sortValues = null, pie) : sort; + }; + + pie.startAngle = function(_) { + return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant$1(+_), pie) : startAngle; + }; + + pie.endAngle = function(_) { + return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant$1(+_), pie) : endAngle; + }; + + pie.padAngle = function(_) { + return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant$1(+_), pie) : padAngle; + }; + + return pie; } -function BasisOpen(context) { - this._context = context; +var curveRadialLinear = curveRadial$1(curveLinear); + +function Radial(curve) { + this._curve = curve; } -BasisOpen.prototype = { +Radial.prototype = { areaStart: function() { - this._line = 0; + this._curve.areaStart(); }, areaEnd: function() { - this._line = NaN; + this._curve.areaEnd(); }, lineStart: function() { - this._x0 = this._x1 = - this._y0 = this._y1 = NaN; - this._point = 0; + this._curve.lineStart(); }, lineEnd: function() { - if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath(); - this._line = 1 - this._line; + this._curve.lineEnd(); }, - point: function(x, y) { - x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; break; - case 1: this._point = 2; break; - case 2: this._point = 3; var x0 = (this._x0 + 4 * this._x1 + x) / 6, y0 = (this._y0 + 4 * this._y1 + y) / 6; this._line ? this._context.lineTo(x0, y0) : this._context.moveTo(x0, y0); break; - case 3: this._point = 4; // proceed - default: point$2(this, x, y); break; - } - this._x0 = this._x1, this._x1 = x; - this._y0 = this._y1, this._y1 = y; + point: function(a, r) { + this._curve.point(r * Math.sin(a), r * -Math.cos(a)); } }; -function basisOpen(context) { - return new BasisOpen(context); +function curveRadial$1(curve) { + + function radial(context) { + return new Radial(curve(context)); + } + + radial._curve = curve; + + return radial; } -function Bundle(context, beta) { - this._basis = new Basis(context); - this._beta = beta; +function lineRadial(l) { + var c = l.curve; + + l.angle = l.x, delete l.x; + l.radius = l.y, delete l.y; + + l.curve = function(_) { + return arguments.length ? c(curveRadial$1(_)) : c()._curve; + }; + + return l; } -Bundle.prototype = { - lineStart: function() { - this._x = []; - this._y = []; - this._basis.lineStart(); - }, - lineEnd: function() { - var x = this._x, - y = this._y, - j = x.length - 1; +function lineRadial$1() { + return lineRadial(line().curve(curveRadialLinear)); +} - if (j > 0) { - var x0 = x[0], - y0 = y[0], - dx = x[j] - x0, - dy = y[j] - y0, - i = -1, - t; +function areaRadial() { + var a = area().curve(curveRadialLinear), + c = a.curve, + x0 = a.lineX0, + x1 = a.lineX1, + y0 = a.lineY0, + y1 = a.lineY1; - while (++i <= j) { - t = i / j; - this._basis.point( - this._beta * x[i] + (1 - this._beta) * (x0 + t * dx), - this._beta * y[i] + (1 - this._beta) * (y0 + t * dy) - ); - } - } + a.angle = a.x, delete a.x; + a.startAngle = a.x0, delete a.x0; + a.endAngle = a.x1, delete a.x1; + a.radius = a.y, delete a.y; + a.innerRadius = a.y0, delete a.y0; + a.outerRadius = a.y1, delete a.y1; + a.lineStartAngle = function() { return lineRadial(x0()); }, delete a.lineX0; + a.lineEndAngle = function() { return lineRadial(x1()); }, delete a.lineX1; + a.lineInnerRadius = function() { return lineRadial(y0()); }, delete a.lineY0; + a.lineOuterRadius = function() { return lineRadial(y1()); }, delete a.lineY1; - this._x = this._y = null; - this._basis.lineEnd(); - }, - point: function(x, y) { - this._x.push(+x); - this._y.push(+y); - } -}; + a.curve = function(_) { + return arguments.length ? c(curveRadial$1(_)) : c()._curve; + }; -var bundle = (function custom(beta) { + return a; +} - function bundle(context) { - return beta === 1 ? new Basis(context) : new Bundle(context, beta); +function pointRadial(x, y) { + return [(y = +y) * Math.cos(x -= Math.PI / 2), y * Math.sin(x)]; +} + +function linkSource(d) { + return d.source; +} + +function linkTarget(d) { + return d.target; +} + +function link(curve) { + var source = linkSource, + target = linkTarget, + x$1 = x, + y$1 = y, + context = null; + + function link() { + var buffer, argv = slice.call(arguments), s = source.apply(this, argv), t = target.apply(this, argv); + if (!context) context = buffer = path(); + curve(context, +x$1.apply(this, (argv[0] = s, argv)), +y$1.apply(this, argv), +x$1.apply(this, (argv[0] = t, argv)), +y$1.apply(this, argv)); + if (buffer) return context = null, buffer + "" || null; } - bundle.beta = function(beta) { - return custom(+beta); + link.source = function(_) { + return arguments.length ? (source = _, link) : source; }; - return bundle; -})(0.85); + link.target = function(_) { + return arguments.length ? (target = _, link) : target; + }; -function point$3(that, x, y) { - that._context.bezierCurveTo( - that._x1 + that._k * (that._x2 - that._x0), - that._y1 + that._k * (that._y2 - that._y0), - that._x2 + that._k * (that._x1 - x), - that._y2 + that._k * (that._y1 - y), - that._x2, - that._y2 - ); + link.x = function(_) { + return arguments.length ? (x$1 = typeof _ === "function" ? _ : constant$1(+_), link) : x$1; + }; + + link.y = function(_) { + return arguments.length ? (y$1 = typeof _ === "function" ? _ : constant$1(+_), link) : y$1; + }; + + link.context = function(_) { + return arguments.length ? ((context = _ == null ? null : _), link) : context; + }; + + return link; } -function Cardinal(context, tension) { - this._context = context; - this._k = (1 - tension) / 6; +function curveHorizontal(context, x0, y0, x1, y1) { + context.moveTo(x0, y0); + context.bezierCurveTo(x0 = (x0 + x1) / 2, y0, x0, y1, x1, y1); } -Cardinal.prototype = { - areaStart: function() { - this._line = 0; - }, - areaEnd: function() { - this._line = NaN; - }, - lineStart: function() { - this._x0 = this._x1 = this._x2 = - this._y0 = this._y1 = this._y2 = NaN; - this._point = 0; - }, - lineEnd: function() { - switch (this._point) { - case 2: this._context.lineTo(this._x2, this._y2); break; - case 3: point$3(this, this._x1, this._y1); break; - } - if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); - this._line = 1 - this._line; - }, - point: function(x, y) { - x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; - case 1: this._point = 2; this._x1 = x, this._y1 = y; break; - case 2: this._point = 3; // proceed - default: point$3(this, x, y); break; - } - this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; - this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; +function curveVertical(context, x0, y0, x1, y1) { + context.moveTo(x0, y0); + context.bezierCurveTo(x0, y0 = (y0 + y1) / 2, x1, y0, x1, y1); +} + +function curveRadial(context, x0, y0, x1, y1) { + var p0 = pointRadial(x0, y0), + p1 = pointRadial(x0, y0 = (y0 + y1) / 2), + p2 = pointRadial(x1, y0), + p3 = pointRadial(x1, y1); + context.moveTo(p0[0], p0[1]); + context.bezierCurveTo(p1[0], p1[1], p2[0], p2[1], p3[0], p3[1]); +} + +function linkHorizontal() { + return link(curveHorizontal); +} + +function linkVertical() { + return link(curveVertical); +} + +function linkRadial() { + var l = link(curveRadial); + l.angle = l.x, delete l.x; + l.radius = l.y, delete l.y; + return l; +} + +var circle = { + draw: function(context, size) { + var r = Math.sqrt(size / pi); + context.moveTo(r, 0); + context.arc(0, 0, r, 0, tau); } }; -var cardinal = (function custom(tension) { - - function cardinal(context) { - return new Cardinal(context, tension); +var cross = { + draw: function(context, size) { + var r = Math.sqrt(size / 5) / 2; + context.moveTo(-3 * r, -r); + context.lineTo(-r, -r); + context.lineTo(-r, -3 * r); + context.lineTo(r, -3 * r); + context.lineTo(r, -r); + context.lineTo(3 * r, -r); + context.lineTo(3 * r, r); + context.lineTo(r, r); + context.lineTo(r, 3 * r); + context.lineTo(-r, 3 * r); + context.lineTo(-r, r); + context.lineTo(-3 * r, r); + context.closePath(); } +}; - cardinal.tension = function(tension) { - return custom(+tension); - }; +var tan30 = Math.sqrt(1 / 3), + tan30_2 = tan30 * 2; - return cardinal; -})(0); +var diamond = { + draw: function(context, size) { + var y = Math.sqrt(size / tan30_2), + x = y * tan30; + context.moveTo(0, -y); + context.lineTo(x, 0); + context.lineTo(0, y); + context.lineTo(-x, 0); + context.closePath(); + } +}; -function CardinalClosed(context, tension) { - this._context = context; - this._k = (1 - tension) / 6; -} +var ka = 0.89081309152928522810, + kr = Math.sin(pi / 10) / Math.sin(7 * pi / 10), + kx = Math.sin(tau / 10) * kr, + ky = -Math.cos(tau / 10) * kr; -CardinalClosed.prototype = { - areaStart: noop$3, - areaEnd: noop$3, - lineStart: function() { - this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 = - this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN; - this._point = 0; - }, - lineEnd: function() { - switch (this._point) { - case 1: { - this._context.moveTo(this._x3, this._y3); - this._context.closePath(); - break; - } - case 2: { - this._context.lineTo(this._x3, this._y3); - this._context.closePath(); - break; - } - case 3: { - this.point(this._x3, this._y3); - this.point(this._x4, this._y4); - this.point(this._x5, this._y5); - break; - } - } - }, - point: function(x, y) { - x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; this._x3 = x, this._y3 = y; break; - case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break; - case 2: this._point = 3; this._x5 = x, this._y5 = y; break; - default: point$3(this, x, y); break; +var star = { + draw: function(context, size) { + var r = Math.sqrt(size * ka), + x = kx * r, + y = ky * r; + context.moveTo(0, -r); + context.lineTo(x, y); + for (var i = 1; i < 5; ++i) { + var a = tau * i / 5, + c = Math.cos(a), + s = Math.sin(a); + context.lineTo(s * r, -c * r); + context.lineTo(c * x - s * y, s * x + c * y); } - this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; - this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; + context.closePath(); } }; -var cardinalClosed = (function custom(tension) { - - function cardinal(context) { - return new CardinalClosed(context, tension); +var square = { + draw: function(context, size) { + var w = Math.sqrt(size), + x = -w / 2; + context.rect(x, x, w, w); } +}; - cardinal.tension = function(tension) { - return custom(+tension); - }; +var sqrt3 = Math.sqrt(3); - return cardinal; -})(0); +var triangle = { + draw: function(context, size) { + var y = -Math.sqrt(size / (sqrt3 * 3)); + context.moveTo(0, y * 2); + context.lineTo(-sqrt3 * y, -y); + context.lineTo(sqrt3 * y, -y); + context.closePath(); + } +}; -function CardinalOpen(context, tension) { - this._context = context; - this._k = (1 - tension) / 6; -} +var c = -0.5, + s = Math.sqrt(3) / 2, + k = 1 / Math.sqrt(12), + a = (k / 2 + 1) * 3; -CardinalOpen.prototype = { - areaStart: function() { - this._line = 0; - }, - areaEnd: function() { - this._line = NaN; - }, - lineStart: function() { - this._x0 = this._x1 = this._x2 = - this._y0 = this._y1 = this._y2 = NaN; - this._point = 0; - }, - lineEnd: function() { - if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath(); - this._line = 1 - this._line; - }, - point: function(x, y) { - x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; break; - case 1: this._point = 2; break; - case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break; - case 3: this._point = 4; // proceed - default: point$3(this, x, y); break; - } - this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; - this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; +var wye = { + draw: function(context, size) { + var r = Math.sqrt(size / a), + x0 = r / 2, + y0 = r * k, + x1 = x0, + y1 = r * k + r, + x2 = -x1, + y2 = y1; + context.moveTo(x0, y0); + context.lineTo(x1, y1); + context.lineTo(x2, y2); + context.lineTo(c * x0 - s * y0, s * x0 + c * y0); + context.lineTo(c * x1 - s * y1, s * x1 + c * y1); + context.lineTo(c * x2 - s * y2, s * x2 + c * y2); + context.lineTo(c * x0 + s * y0, c * y0 - s * x0); + context.lineTo(c * x1 + s * y1, c * y1 - s * x1); + context.lineTo(c * x2 + s * y2, c * y2 - s * x2); + context.closePath(); } }; -var cardinalOpen = (function custom(tension) { +var symbols = [ + circle, + cross, + diamond, + square, + star, + triangle, + wye +]; - function cardinal(context) { - return new CardinalOpen(context, tension); +function symbol(type, size) { + var context = null; + type = typeof type === "function" ? type : constant$1(type || circle); + size = typeof size === "function" ? size : constant$1(size === undefined ? 64 : +size); + + function symbol() { + var buffer; + if (!context) context = buffer = path(); + type.apply(this, arguments).draw(context, +size.apply(this, arguments)); + if (buffer) return context = null, buffer + "" || null; } - cardinal.tension = function(tension) { - return custom(+tension); + symbol.type = function(_) { + return arguments.length ? (type = typeof _ === "function" ? _ : constant$1(_), symbol) : type; }; - return cardinal; -})(0); + symbol.size = function(_) { + return arguments.length ? (size = typeof _ === "function" ? _ : constant$1(+_), symbol) : size; + }; -function point$4(that, x, y) { - var x1 = that._x1, - y1 = that._y1, - x2 = that._x2, - y2 = that._y2; + symbol.context = function(_) { + return arguments.length ? (context = _ == null ? null : _, symbol) : context; + }; - if (that._l01_a > epsilon$3) { - var a = 2 * that._l01_2a + 3 * that._l01_a * that._l12_a + that._l12_2a, - n = 3 * that._l01_a * (that._l01_a + that._l12_a); - x1 = (x1 * a - that._x0 * that._l12_2a + that._x2 * that._l01_2a) / n; - y1 = (y1 * a - that._y0 * that._l12_2a + that._y2 * that._l01_2a) / n; - } + return symbol; +} - if (that._l23_a > epsilon$3) { - var b = 2 * that._l23_2a + 3 * that._l23_a * that._l12_a + that._l12_2a, - m = 3 * that._l23_a * (that._l23_a + that._l12_a); - x2 = (x2 * b + that._x1 * that._l23_2a - x * that._l12_2a) / m; - y2 = (y2 * b + that._y1 * that._l23_2a - y * that._l12_2a) / m; - } +function noop() {} - that._context.bezierCurveTo(x1, y1, x2, y2, that._x2, that._y2); +function point$3(that, x, y) { + that._context.bezierCurveTo( + (2 * that._x0 + that._x1) / 3, + (2 * that._y0 + that._y1) / 3, + (that._x0 + 2 * that._x1) / 3, + (that._y0 + 2 * that._y1) / 3, + (that._x0 + 4 * that._x1 + x) / 6, + (that._y0 + 4 * that._y1 + y) / 6 + ); } -function CatmullRom(context, alpha) { +function Basis(context) { this._context = context; - this._alpha = alpha; } -CatmullRom.prototype = { +Basis.prototype = { areaStart: function() { this._line = 0; }, @@ -15989,133 +17622,90 @@ CatmullRom.prototype = { this._line = NaN; }, lineStart: function() { - this._x0 = this._x1 = this._x2 = - this._y0 = this._y1 = this._y2 = NaN; - this._l01_a = this._l12_a = this._l23_a = - this._l01_2a = this._l12_2a = this._l23_2a = + this._x0 = this._x1 = + this._y0 = this._y1 = NaN; this._point = 0; }, lineEnd: function() { switch (this._point) { - case 2: this._context.lineTo(this._x2, this._y2); break; - case 3: this.point(this._x2, this._y2); break; + case 3: point$3(this, this._x1, this._y1); // proceed + case 2: this._context.lineTo(this._x1, this._y1); break; } if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); this._line = 1 - this._line; }, point: function(x, y) { x = +x, y = +y; - - if (this._point) { - var x23 = this._x2 - x, - y23 = this._y2 - y; - this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha)); - } - switch (this._point) { case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; case 1: this._point = 2; break; - case 2: this._point = 3; // proceed - default: point$4(this, x, y); break; + case 2: this._point = 3; this._context.lineTo((5 * this._x0 + this._x1) / 6, (5 * this._y0 + this._y1) / 6); // proceed + default: point$3(this, x, y); break; } - - this._l01_a = this._l12_a, this._l12_a = this._l23_a; - this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a; - this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; - this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; - } -}; - -var catmullRom = (function custom(alpha) { - - function catmullRom(context) { - return alpha ? new CatmullRom(context, alpha) : new Cardinal(context, 0); + this._x0 = this._x1, this._x1 = x; + this._y0 = this._y1, this._y1 = y; } +}; - catmullRom.alpha = function(alpha) { - return custom(+alpha); - }; - - return catmullRom; -})(0.5); +function basis(context) { + return new Basis(context); +} -function CatmullRomClosed(context, alpha) { +function BasisClosed(context) { this._context = context; - this._alpha = alpha; } -CatmullRomClosed.prototype = { - areaStart: noop$3, - areaEnd: noop$3, +BasisClosed.prototype = { + areaStart: noop, + areaEnd: noop, lineStart: function() { - this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 = - this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN; - this._l01_a = this._l12_a = this._l23_a = - this._l01_2a = this._l12_2a = this._l23_2a = + this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = + this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = NaN; this._point = 0; }, lineEnd: function() { switch (this._point) { case 1: { - this._context.moveTo(this._x3, this._y3); + this._context.moveTo(this._x2, this._y2); this._context.closePath(); break; } case 2: { - this._context.lineTo(this._x3, this._y3); + this._context.moveTo((this._x2 + 2 * this._x3) / 3, (this._y2 + 2 * this._y3) / 3); + this._context.lineTo((this._x3 + 2 * this._x2) / 3, (this._y3 + 2 * this._y2) / 3); this._context.closePath(); break; } case 3: { + this.point(this._x2, this._y2); this.point(this._x3, this._y3); this.point(this._x4, this._y4); - this.point(this._x5, this._y5); break; } } }, point: function(x, y) { x = +x, y = +y; - - if (this._point) { - var x23 = this._x2 - x, - y23 = this._y2 - y; - this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha)); - } - switch (this._point) { - case 0: this._point = 1; this._x3 = x, this._y3 = y; break; - case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break; - case 2: this._point = 3; this._x5 = x, this._y5 = y; break; - default: point$4(this, x, y); break; + case 0: this._point = 1; this._x2 = x, this._y2 = y; break; + case 1: this._point = 2; this._x3 = x, this._y3 = y; break; + case 2: this._point = 3; this._x4 = x, this._y4 = y; this._context.moveTo((this._x0 + 4 * this._x1 + x) / 6, (this._y0 + 4 * this._y1 + y) / 6); break; + default: point$3(this, x, y); break; } - - this._l01_a = this._l12_a, this._l12_a = this._l23_a; - this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a; - this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; - this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; + this._x0 = this._x1, this._x1 = x; + this._y0 = this._y1, this._y1 = y; } }; -var catmullRomClosed = (function custom(alpha) { - - function catmullRom(context) { - return alpha ? new CatmullRomClosed(context, alpha) : new CardinalClosed(context, 0); - } - - catmullRom.alpha = function(alpha) { - return custom(+alpha); - }; - - return catmullRom; -})(0.5); +function basisClosed(context) { + return new BasisClosed(context); +} -function CatmullRomOpen(context, alpha) { +function BasisOpen(context) { this._context = context; - this._alpha = alpha; } -CatmullRomOpen.prototype = { +BasisOpen.prototype = { areaStart: function() { this._line = 0; }, @@ -16123,10 +17713,8 @@ CatmullRomOpen.prototype = { this._line = NaN; }, lineStart: function() { - this._x0 = this._x1 = this._x2 = - this._y0 = this._y1 = this._y2 = NaN; - this._l01_a = this._l12_a = this._l23_a = - this._l01_2a = this._l12_2a = this._l23_2a = + this._x0 = this._x1 = + this._y0 = this._y1 = NaN; this._point = 0; }, lineEnd: function() { @@ -16135,105 +17723,140 @@ CatmullRomOpen.prototype = { }, point: function(x, y) { x = +x, y = +y; - - if (this._point) { - var x23 = this._x2 - x, - y23 = this._y2 - y; - this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha)); - } - switch (this._point) { case 0: this._point = 1; break; case 1: this._point = 2; break; - case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break; + case 2: this._point = 3; var x0 = (this._x0 + 4 * this._x1 + x) / 6, y0 = (this._y0 + 4 * this._y1 + y) / 6; this._line ? this._context.lineTo(x0, y0) : this._context.moveTo(x0, y0); break; case 3: this._point = 4; // proceed - default: point$4(this, x, y); break; + default: point$3(this, x, y); break; } - - this._l01_a = this._l12_a, this._l12_a = this._l23_a; - this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a; - this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; - this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; + this._x0 = this._x1, this._x1 = x; + this._y0 = this._y1, this._y1 = y; } }; -var catmullRomOpen = (function custom(alpha) { +function basisOpen(context) { + return new BasisOpen(context); +} - function catmullRom(context) { - return alpha ? new CatmullRomOpen(context, alpha) : new CardinalOpen(context, 0); +class Bump { + constructor(context, x) { + this._context = context; + this._x = x; + } + areaStart() { + this._line = 0; + } + areaEnd() { + this._line = NaN; + } + lineStart() { + this._point = 0; + } + lineEnd() { + if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); + this._line = 1 - this._line; + } + point(x, y) { + x = +x, y = +y; + switch (this._point) { + case 0: { + this._point = 1; + if (this._line) this._context.lineTo(x, y); + else this._context.moveTo(x, y); + break; + } + case 1: this._point = 2; // proceed + default: { + if (this._x) this._context.bezierCurveTo(this._x0 = (this._x0 + x) / 2, this._y0, this._x0, y, x, y); + else this._context.bezierCurveTo(this._x0, this._y0 = (this._y0 + y) / 2, x, this._y0, x, y); + break; + } + } + this._x0 = x, this._y0 = y; } +} - catmullRom.alpha = function(alpha) { - return custom(+alpha); - }; +function bumpX(context) { + return new Bump(context, true); +} - return catmullRom; -})(0.5); +function bumpY(context) { + return new Bump(context, false); +} -function LinearClosed(context) { - this._context = context; +function Bundle(context, beta) { + this._basis = new Basis(context); + this._beta = beta; } -LinearClosed.prototype = { - areaStart: noop$3, - areaEnd: noop$3, +Bundle.prototype = { lineStart: function() { - this._point = 0; + this._x = []; + this._y = []; + this._basis.lineStart(); }, lineEnd: function() { - if (this._point) this._context.closePath(); + var x = this._x, + y = this._y, + j = x.length - 1; + + if (j > 0) { + var x0 = x[0], + y0 = y[0], + dx = x[j] - x0, + dy = y[j] - y0, + i = -1, + t; + + while (++i <= j) { + t = i / j; + this._basis.point( + this._beta * x[i] + (1 - this._beta) * (x0 + t * dx), + this._beta * y[i] + (1 - this._beta) * (y0 + t * dy) + ); + } + } + + this._x = this._y = null; + this._basis.lineEnd(); }, point: function(x, y) { - x = +x, y = +y; - if (this._point) this._context.lineTo(x, y); - else this._point = 1, this._context.moveTo(x, y); + this._x.push(+x); + this._y.push(+y); } }; -function linearClosed(context) { - return new LinearClosed(context); -} +var bundle = (function custom(beta) { -function sign$1(x) { - return x < 0 ? -1 : 1; -} + function bundle(context) { + return beta === 1 ? new Basis(context) : new Bundle(context, beta); + } -// Calculate the slopes of the tangents (Hermite-type interpolation) based on -// the following paper: Steffen, M. 1990. A Simple Method for Monotonic -// Interpolation in One Dimension. Astronomy and Astrophysics, Vol. 239, NO. -// NOV(II), P. 443, 1990. -function slope3(that, x2, y2) { - var h0 = that._x1 - that._x0, - h1 = x2 - that._x1, - s0 = (that._y1 - that._y0) / (h0 || h1 < 0 && -0), - s1 = (y2 - that._y1) / (h1 || h0 < 0 && -0), - p = (s0 * h1 + s1 * h0) / (h0 + h1); - return (sign$1(s0) + sign$1(s1)) * Math.min(Math.abs(s0), Math.abs(s1), 0.5 * Math.abs(p)) || 0; -} + bundle.beta = function(beta) { + return custom(+beta); + }; -// Calculate a one-sided slope. -function slope2(that, t) { - var h = that._x1 - that._x0; - return h ? (3 * (that._y1 - that._y0) / h - t) / 2 : t; -} + return bundle; +})(0.85); -// According to https://en.wikipedia.org/wiki/Cubic_Hermite_spline#Representations -// "you can express cubic Hermite interpolation in terms of cubic Bézier curves -// with respect to the four values p0, p0 + m0 / 3, p1 - m1 / 3, p1". -function point$5(that, t0, t1) { - var x0 = that._x0, - y0 = that._y0, - x1 = that._x1, - y1 = that._y1, - dx = (x1 - x0) / 3; - that._context.bezierCurveTo(x0 + dx, y0 + dx * t0, x1 - dx, y1 - dx * t1, x1, y1); +function point$2(that, x, y) { + that._context.bezierCurveTo( + that._x1 + that._k * (that._x2 - that._x0), + that._y1 + that._k * (that._y2 - that._y0), + that._x2 + that._k * (that._x1 - x), + that._y2 + that._k * (that._y1 - y), + that._x2, + that._y2 + ); } -function MonotoneX(context) { +function Cardinal(context, tension) { this._context = context; + this._k = (1 - tension) / 6; } -MonotoneX.prototype = { +Cardinal.prototype = { areaStart: function() { this._line = 0; }, @@ -16241,69 +17864,109 @@ MonotoneX.prototype = { this._line = NaN; }, lineStart: function() { - this._x0 = this._x1 = - this._y0 = this._y1 = - this._t0 = NaN; + this._x0 = this._x1 = this._x2 = + this._y0 = this._y1 = this._y2 = NaN; + this._point = 0; + }, + lineEnd: function() { + switch (this._point) { + case 2: this._context.lineTo(this._x2, this._y2); break; + case 3: point$2(this, this._x1, this._y1); break; + } + if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); + this._line = 1 - this._line; + }, + point: function(x, y) { + x = +x, y = +y; + switch (this._point) { + case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; + case 1: this._point = 2; this._x1 = x, this._y1 = y; break; + case 2: this._point = 3; // proceed + default: point$2(this, x, y); break; + } + this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; + this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; + } +}; + +var cardinal = (function custom(tension) { + + function cardinal(context) { + return new Cardinal(context, tension); + } + + cardinal.tension = function(tension) { + return custom(+tension); + }; + + return cardinal; +})(0); + +function CardinalClosed(context, tension) { + this._context = context; + this._k = (1 - tension) / 6; +} + +CardinalClosed.prototype = { + areaStart: noop, + areaEnd: noop, + lineStart: function() { + this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 = + this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN; this._point = 0; }, lineEnd: function() { switch (this._point) { - case 2: this._context.lineTo(this._x1, this._y1); break; - case 3: point$5(this, this._t0, slope2(this, this._t0)); break; + case 1: { + this._context.moveTo(this._x3, this._y3); + this._context.closePath(); + break; + } + case 2: { + this._context.lineTo(this._x3, this._y3); + this._context.closePath(); + break; + } + case 3: { + this.point(this._x3, this._y3); + this.point(this._x4, this._y4); + this.point(this._x5, this._y5); + break; + } } - if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); - this._line = 1 - this._line; }, point: function(x, y) { - var t1 = NaN; - x = +x, y = +y; - if (x === this._x1 && y === this._y1) return; // Ignore coincident points. switch (this._point) { - case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; - case 1: this._point = 2; break; - case 2: this._point = 3; point$5(this, slope2(this, t1 = slope3(this, x, y)), t1); break; - default: point$5(this, this._t0, t1 = slope3(this, x, y)); break; + case 0: this._point = 1; this._x3 = x, this._y3 = y; break; + case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break; + case 2: this._point = 3; this._x5 = x, this._y5 = y; break; + default: point$2(this, x, y); break; } - - this._x0 = this._x1, this._x1 = x; - this._y0 = this._y1, this._y1 = y; - this._t0 = t1; + this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; + this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; } }; -function MonotoneY(context) { - this._context = new ReflectContext(context); -} - -(MonotoneY.prototype = Object.create(MonotoneX.prototype)).point = function(x, y) { - MonotoneX.prototype.point.call(this, y, x); -}; - -function ReflectContext(context) { - this._context = context; -} +var cardinalClosed = (function custom(tension) { -ReflectContext.prototype = { - moveTo: function(x, y) { this._context.moveTo(y, x); }, - closePath: function() { this._context.closePath(); }, - lineTo: function(x, y) { this._context.lineTo(y, x); }, - bezierCurveTo: function(x1, y1, x2, y2, x, y) { this._context.bezierCurveTo(y1, x1, y2, x2, y, x); } -}; + function cardinal(context) { + return new CardinalClosed(context, tension); + } -function monotoneX(context) { - return new MonotoneX(context); -} + cardinal.tension = function(tension) { + return custom(+tension); + }; -function monotoneY(context) { - return new MonotoneY(context); -} + return cardinal; +})(0); -function Natural(context) { +function CardinalOpen(context, tension) { this._context = context; + this._k = (1 - tension) / 6; } -Natural.prototype = { +CardinalOpen.prototype = { areaStart: function() { this._line = 0; }, @@ -16311,66 +17974,70 @@ Natural.prototype = { this._line = NaN; }, lineStart: function() { - this._x = []; - this._y = []; + this._x0 = this._x1 = this._x2 = + this._y0 = this._y1 = this._y2 = NaN; + this._point = 0; }, lineEnd: function() { - var x = this._x, - y = this._y, - n = x.length; - - if (n) { - this._line ? this._context.lineTo(x[0], y[0]) : this._context.moveTo(x[0], y[0]); - if (n === 2) { - this._context.lineTo(x[1], y[1]); - } else { - var px = controlPoints(x), - py = controlPoints(y); - for (var i0 = 0, i1 = 1; i1 < n; ++i0, ++i1) { - this._context.bezierCurveTo(px[0][i0], py[0][i0], px[1][i0], py[1][i0], x[i1], y[i1]); - } - } - } - - if (this._line || (this._line !== 0 && n === 1)) this._context.closePath(); + if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath(); this._line = 1 - this._line; - this._x = this._y = null; }, point: function(x, y) { - this._x.push(+x); - this._y.push(+y); + x = +x, y = +y; + switch (this._point) { + case 0: this._point = 1; break; + case 1: this._point = 2; break; + case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break; + case 3: this._point = 4; // proceed + default: point$2(this, x, y); break; + } + this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; + this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; } }; -// See https://www.particleincell.com/2012/bezier-splines/ for derivation. -function controlPoints(x) { - var i, - n = x.length - 1, - m, - a = new Array(n), - b = new Array(n), - r = new Array(n); - a[0] = 0, b[0] = 2, r[0] = x[0] + 2 * x[1]; - for (i = 1; i < n - 1; ++i) a[i] = 1, b[i] = 4, r[i] = 4 * x[i] + 2 * x[i + 1]; - a[n - 1] = 2, b[n - 1] = 7, r[n - 1] = 8 * x[n - 1] + x[n]; - for (i = 1; i < n; ++i) m = a[i] / b[i - 1], b[i] -= m, r[i] -= m * r[i - 1]; - a[n - 1] = r[n - 1] / b[n - 1]; - for (i = n - 2; i >= 0; --i) a[i] = (r[i] - a[i + 1]) / b[i]; - b[n - 1] = (x[n] + a[n - 1]) / 2; - for (i = 0; i < n - 1; ++i) b[i] = 2 * x[i + 1] - a[i + 1]; - return [a, b]; -} +var cardinalOpen = (function custom(tension) { -function natural(context) { - return new Natural(context); + function cardinal(context) { + return new CardinalOpen(context, tension); + } + + cardinal.tension = function(tension) { + return custom(+tension); + }; + + return cardinal; +})(0); + +function point$1(that, x, y) { + var x1 = that._x1, + y1 = that._y1, + x2 = that._x2, + y2 = that._y2; + + if (that._l01_a > epsilon) { + var a = 2 * that._l01_2a + 3 * that._l01_a * that._l12_a + that._l12_2a, + n = 3 * that._l01_a * (that._l01_a + that._l12_a); + x1 = (x1 * a - that._x0 * that._l12_2a + that._x2 * that._l01_2a) / n; + y1 = (y1 * a - that._y0 * that._l12_2a + that._y2 * that._l01_2a) / n; + } + + if (that._l23_a > epsilon) { + var b = 2 * that._l23_2a + 3 * that._l23_a * that._l12_a + that._l12_2a, + m = 3 * that._l23_a * (that._l23_a + that._l12_a); + x2 = (x2 * b + that._x1 * that._l23_2a - x * that._l12_2a) / m; + y2 = (y2 * b + that._y1 * that._l23_2a - y * that._l12_2a) / m; + } + + that._context.bezierCurveTo(x1, y1, x2, y2, that._x2, that._y2); } -function Step(context, t) { +function CatmullRom(context, alpha) { this._context = context; - this._t = t; + this._alpha = alpha; } -Step.prototype = { +CatmullRom.prototype = { areaStart: function() { this._line = 0; }, @@ -16378,1224 +18045,632 @@ Step.prototype = { this._line = NaN; }, lineStart: function() { - this._x = this._y = NaN; + this._x0 = this._x1 = this._x2 = + this._y0 = this._y1 = this._y2 = NaN; + this._l01_a = this._l12_a = this._l23_a = + this._l01_2a = this._l12_2a = this._l23_2a = this._point = 0; }, lineEnd: function() { - if (0 < this._t && this._t < 1 && this._point === 2) this._context.lineTo(this._x, this._y); + switch (this._point) { + case 2: this._context.lineTo(this._x2, this._y2); break; + case 3: this.point(this._x2, this._y2); break; + } if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); - if (this._line >= 0) this._t = 1 - this._t, this._line = 1 - this._line; + this._line = 1 - this._line; }, point: function(x, y) { x = +x, y = +y; - switch (this._point) { - case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; - case 1: this._point = 2; // proceed - default: { - if (this._t <= 0) { - this._context.lineTo(this._x, y); - this._context.lineTo(x, y); - } else { - var x1 = this._x * (1 - this._t) + x * this._t; - this._context.lineTo(x1, this._y); - this._context.lineTo(x1, y); - } - break; - } - } - this._x = x, this._y = y; - } -}; - -function step(context) { - return new Step(context, 0.5); -} - -function stepBefore(context) { - return new Step(context, 0); -} - -function stepAfter(context) { - return new Step(context, 1); -} - -function none$1(series, order) { - if (!((n = series.length) > 1)) return; - for (var i = 1, j, s0, s1 = series[order[0]], n, m = s1.length; i < n; ++i) { - s0 = s1, s1 = series[order[i]]; - for (j = 0; j < m; ++j) { - s1[j][1] += s1[j][0] = isNaN(s0[j][1]) ? s0[j][0] : s0[j][1]; - } - } -} - -function none$2(series) { - var n = series.length, o = new Array(n); - while (--n >= 0) o[n] = n; - return o; -} - -function stackValue(d, key) { - return d[key]; -} - -function stack() { - var keys = constant$b([]), - order = none$2, - offset = none$1, - value = stackValue; - - function stack(data) { - var kz = keys.apply(this, arguments), - i, - m = data.length, - n = kz.length, - sz = new Array(n), - oz; - for (i = 0; i < n; ++i) { - for (var ki = kz[i], si = sz[i] = new Array(m), j = 0, sij; j < m; ++j) { - si[j] = sij = [0, +value(data[j], ki, j, data)]; - sij.data = data[j]; - } - si.key = ki; + if (this._point) { + var x23 = this._x2 - x, + y23 = this._y2 - y; + this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha)); } - for (i = 0, oz = order(sz); i < n; ++i) { - sz[oz[i]].index = i; + switch (this._point) { + case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; + case 1: this._point = 2; break; + case 2: this._point = 3; // proceed + default: point$1(this, x, y); break; } - offset(sz, oz); - return sz; + this._l01_a = this._l12_a, this._l12_a = this._l23_a; + this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a; + this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; + this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; } +}; - stack.keys = function(_) { - return arguments.length ? (keys = typeof _ === "function" ? _ : constant$b(slice$6.call(_)), stack) : keys; - }; - - stack.value = function(_) { - return arguments.length ? (value = typeof _ === "function" ? _ : constant$b(+_), stack) : value; - }; +var catmullRom = (function custom(alpha) { - stack.order = function(_) { - return arguments.length ? (order = _ == null ? none$2 : typeof _ === "function" ? _ : constant$b(slice$6.call(_)), stack) : order; - }; + function catmullRom(context) { + return alpha ? new CatmullRom(context, alpha) : new Cardinal(context, 0); + } - stack.offset = function(_) { - return arguments.length ? (offset = _ == null ? none$1 : _, stack) : offset; + catmullRom.alpha = function(alpha) { + return custom(+alpha); }; - return stack; -} + return catmullRom; +})(0.5); -function expand(series, order) { - if (!((n = series.length) > 0)) return; - for (var i, n, j = 0, m = series[0].length, y; j < m; ++j) { - for (y = i = 0; i < n; ++i) y += series[i][j][1] || 0; - if (y) for (i = 0; i < n; ++i) series[i][j][1] /= y; - } - none$1(series, order); +function CatmullRomClosed(context, alpha) { + this._context = context; + this._alpha = alpha; } -function diverging$1(series, order) { - if (!((n = series.length) > 0)) return; - for (var i, j = 0, d, dy, yp, yn, n, m = series[order[0]].length; j < m; ++j) { - for (yp = yn = 0, i = 0; i < n; ++i) { - if ((dy = (d = series[order[i]][j])[1] - d[0]) > 0) { - d[0] = yp, d[1] = yp += dy; - } else if (dy < 0) { - d[1] = yn, d[0] = yn += dy; - } else { - d[0] = 0, d[1] = dy; +CatmullRomClosed.prototype = { + areaStart: noop, + areaEnd: noop, + lineStart: function() { + this._x0 = this._x1 = this._x2 = this._x3 = this._x4 = this._x5 = + this._y0 = this._y1 = this._y2 = this._y3 = this._y4 = this._y5 = NaN; + this._l01_a = this._l12_a = this._l23_a = + this._l01_2a = this._l12_2a = this._l23_2a = + this._point = 0; + }, + lineEnd: function() { + switch (this._point) { + case 1: { + this._context.moveTo(this._x3, this._y3); + this._context.closePath(); + break; } - } - } -} - -function silhouette(series, order) { - if (!((n = series.length) > 0)) return; - for (var j = 0, s0 = series[order[0]], n, m = s0.length; j < m; ++j) { - for (var i = 0, y = 0; i < n; ++i) y += series[i][j][1] || 0; - s0[j][1] += s0[j][0] = -y / 2; - } - none$1(series, order); -} - -function wiggle(series, order) { - if (!((n = series.length) > 0) || !((m = (s0 = series[order[0]]).length) > 0)) return; - for (var y = 0, j = 1, s0, m, n; j < m; ++j) { - for (var i = 0, s1 = 0, s2 = 0; i < n; ++i) { - var si = series[order[i]], - sij0 = si[j][1] || 0, - sij1 = si[j - 1][1] || 0, - s3 = (sij0 - sij1) / 2; - for (var k = 0; k < i; ++k) { - var sk = series[order[k]], - skj0 = sk[j][1] || 0, - skj1 = sk[j - 1][1] || 0; - s3 += skj0 - skj1; + case 2: { + this._context.lineTo(this._x3, this._y3); + this._context.closePath(); + break; + } + case 3: { + this.point(this._x3, this._y3); + this.point(this._x4, this._y4); + this.point(this._x5, this._y5); + break; } - s1 += sij0, s2 += s3 * sij0; } - s0[j - 1][1] += s0[j - 1][0] = y; - if (s1) y -= s2 / s1; - } - s0[j - 1][1] += s0[j - 1][0] = y; - none$1(series, order); -} - -function appearance(series) { - var peaks = series.map(peak); - return none$2(series).sort(function(a, b) { return peaks[a] - peaks[b]; }); -} - -function peak(series) { - var i = -1, j = 0, n = series.length, vi, vj = -Infinity; - while (++i < n) if ((vi = +series[i][1]) > vj) vj = vi, j = i; - return j; -} - -function ascending$3(series) { - var sums = series.map(sum$2); - return none$2(series).sort(function(a, b) { return sums[a] - sums[b]; }); -} - -function sum$2(series) { - var s = 0, i = -1, n = series.length, v; - while (++i < n) if (v = +series[i][1]) s += v; - return s; -} - -function descending$2(series) { - return ascending$3(series).reverse(); -} + }, + point: function(x, y) { + x = +x, y = +y; -function insideOut(series) { - var n = series.length, - i, - j, - sums = series.map(sum$2), - order = appearance(series), - top = 0, - bottom = 0, - tops = [], - bottoms = []; + if (this._point) { + var x23 = this._x2 - x, + y23 = this._y2 - y; + this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha)); + } - for (i = 0; i < n; ++i) { - j = order[i]; - if (top < bottom) { - top += sums[j]; - tops.push(j); - } else { - bottom += sums[j]; - bottoms.push(j); + switch (this._point) { + case 0: this._point = 1; this._x3 = x, this._y3 = y; break; + case 1: this._point = 2; this._context.moveTo(this._x4 = x, this._y4 = y); break; + case 2: this._point = 3; this._x5 = x, this._y5 = y; break; + default: point$1(this, x, y); break; } + + this._l01_a = this._l12_a, this._l12_a = this._l23_a; + this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a; + this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; + this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; } +}; - return bottoms.reverse().concat(tops); -} +var catmullRomClosed = (function custom(alpha) { -function reverse(series) { - return none$2(series).reverse(); -} + function catmullRom(context) { + return alpha ? new CatmullRomClosed(context, alpha) : new CardinalClosed(context, 0); + } -function constant$c(x) { - return function() { - return x; + catmullRom.alpha = function(alpha) { + return custom(+alpha); }; -} - -function x$4(d) { - return d[0]; -} -function y$4(d) { - return d[1]; -} - -function RedBlackTree() { - this._ = null; // root node -} + return catmullRom; +})(0.5); -function RedBlackNode(node) { - node.U = // parent node - node.C = // color - true for red, false for black - node.L = // left node - node.R = // right node - node.P = // previous node - node.N = null; // next node +function CatmullRomOpen(context, alpha) { + this._context = context; + this._alpha = alpha; } -RedBlackTree.prototype = { - constructor: RedBlackTree, - - insert: function(after, node) { - var parent, grandpa, uncle; - - if (after) { - node.P = after; - node.N = after.N; - if (after.N) after.N.P = node; - after.N = node; - if (after.R) { - after = after.R; - while (after.L) after = after.L; - after.L = node; - } else { - after.R = node; - } - parent = after; - } else if (this._) { - after = RedBlackFirst(this._); - node.P = null; - node.N = after; - after.P = after.L = node; - parent = after; - } else { - node.P = node.N = null; - this._ = node; - parent = null; - } - node.L = node.R = null; - node.U = parent; - node.C = true; - - after = node; - while (parent && parent.C) { - grandpa = parent.U; - if (parent === grandpa.L) { - uncle = grandpa.R; - if (uncle && uncle.C) { - parent.C = uncle.C = false; - grandpa.C = true; - after = grandpa; - } else { - if (after === parent.R) { - RedBlackRotateLeft(this, parent); - after = parent; - parent = after.U; - } - parent.C = false; - grandpa.C = true; - RedBlackRotateRight(this, grandpa); - } - } else { - uncle = grandpa.L; - if (uncle && uncle.C) { - parent.C = uncle.C = false; - grandpa.C = true; - after = grandpa; - } else { - if (after === parent.L) { - RedBlackRotateRight(this, parent); - after = parent; - parent = after.U; - } - parent.C = false; - grandpa.C = true; - RedBlackRotateLeft(this, grandpa); - } - } - parent = after.U; - } - this._.C = false; +CatmullRomOpen.prototype = { + areaStart: function() { + this._line = 0; }, + areaEnd: function() { + this._line = NaN; + }, + lineStart: function() { + this._x0 = this._x1 = this._x2 = + this._y0 = this._y1 = this._y2 = NaN; + this._l01_a = this._l12_a = this._l23_a = + this._l01_2a = this._l12_2a = this._l23_2a = + this._point = 0; + }, + lineEnd: function() { + if (this._line || (this._line !== 0 && this._point === 3)) this._context.closePath(); + this._line = 1 - this._line; + }, + point: function(x, y) { + x = +x, y = +y; - remove: function(node) { - if (node.N) node.N.P = node.P; - if (node.P) node.P.N = node.N; - node.N = node.P = null; - - var parent = node.U, - sibling, - left = node.L, - right = node.R, - next, - red; - - if (!left) next = right; - else if (!right) next = left; - else next = RedBlackFirst(right); + if (this._point) { + var x23 = this._x2 - x, + y23 = this._y2 - y; + this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha)); + } - if (parent) { - if (parent.L === node) parent.L = next; - else parent.R = next; - } else { - this._ = next; - } - - if (left && right) { - red = next.C; - next.C = node.C; - next.L = left; - left.U = next; - if (next !== right) { - parent = next.U; - next.U = node.U; - node = next.R; - parent.L = node; - next.R = right; - right.U = next; - } else { - next.U = parent; - parent = next; - node = next.R; - } - } else { - red = node.C; - node = next; + switch (this._point) { + case 0: this._point = 1; break; + case 1: this._point = 2; break; + case 2: this._point = 3; this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2); break; + case 3: this._point = 4; // proceed + default: point$1(this, x, y); break; } - if (node) node.U = parent; - if (red) return; - if (node && node.C) { node.C = false; return; } + this._l01_a = this._l12_a, this._l12_a = this._l23_a; + this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a; + this._x0 = this._x1, this._x1 = this._x2, this._x2 = x; + this._y0 = this._y1, this._y1 = this._y2, this._y2 = y; + } +}; - do { - if (node === this._) break; - if (node === parent.L) { - sibling = parent.R; - if (sibling.C) { - sibling.C = false; - parent.C = true; - RedBlackRotateLeft(this, parent); - sibling = parent.R; - } - if ((sibling.L && sibling.L.C) - || (sibling.R && sibling.R.C)) { - if (!sibling.R || !sibling.R.C) { - sibling.L.C = false; - sibling.C = true; - RedBlackRotateRight(this, sibling); - sibling = parent.R; - } - sibling.C = parent.C; - parent.C = sibling.R.C = false; - RedBlackRotateLeft(this, parent); - node = this._; - break; - } - } else { - sibling = parent.L; - if (sibling.C) { - sibling.C = false; - parent.C = true; - RedBlackRotateRight(this, parent); - sibling = parent.L; - } - if ((sibling.L && sibling.L.C) - || (sibling.R && sibling.R.C)) { - if (!sibling.L || !sibling.L.C) { - sibling.R.C = false; - sibling.C = true; - RedBlackRotateLeft(this, sibling); - sibling = parent.L; - } - sibling.C = parent.C; - parent.C = sibling.L.C = false; - RedBlackRotateRight(this, parent); - node = this._; - break; - } - } - sibling.C = true; - node = parent; - parent = parent.U; - } while (!node.C); +var catmullRomOpen = (function custom(alpha) { - if (node) node.C = false; + function catmullRom(context) { + return alpha ? new CatmullRomOpen(context, alpha) : new CardinalOpen(context, 0); } -}; -function RedBlackRotateLeft(tree, node) { - var p = node, - q = node.R, - parent = p.U; + catmullRom.alpha = function(alpha) { + return custom(+alpha); + }; - if (parent) { - if (parent.L === p) parent.L = q; - else parent.R = q; - } else { - tree._ = q; - } + return catmullRom; +})(0.5); - q.U = parent; - p.U = q; - p.R = q.L; - if (p.R) p.R.U = p; - q.L = p; +function LinearClosed(context) { + this._context = context; } -function RedBlackRotateRight(tree, node) { - var p = node, - q = node.L, - parent = p.U; - - if (parent) { - if (parent.L === p) parent.L = q; - else parent.R = q; - } else { - tree._ = q; +LinearClosed.prototype = { + areaStart: noop, + areaEnd: noop, + lineStart: function() { + this._point = 0; + }, + lineEnd: function() { + if (this._point) this._context.closePath(); + }, + point: function(x, y) { + x = +x, y = +y; + if (this._point) this._context.lineTo(x, y); + else this._point = 1, this._context.moveTo(x, y); } +}; - q.U = parent; - p.U = q; - p.L = q.R; - if (p.L) p.L.U = p; - q.R = p; +function linearClosed(context) { + return new LinearClosed(context); } -function RedBlackFirst(node) { - while (node.L) node = node.L; - return node; +function sign(x) { + return x < 0 ? -1 : 1; } -function createEdge(left, right, v0, v1) { - var edge = [null, null], - index = edges.push(edge) - 1; - edge.left = left; - edge.right = right; - if (v0) setEdgeEnd(edge, left, right, v0); - if (v1) setEdgeEnd(edge, right, left, v1); - cells[left.index].halfedges.push(index); - cells[right.index].halfedges.push(index); - return edge; +// Calculate the slopes of the tangents (Hermite-type interpolation) based on +// the following paper: Steffen, M. 1990. A Simple Method for Monotonic +// Interpolation in One Dimension. Astronomy and Astrophysics, Vol. 239, NO. +// NOV(II), P. 443, 1990. +function slope3(that, x2, y2) { + var h0 = that._x1 - that._x0, + h1 = x2 - that._x1, + s0 = (that._y1 - that._y0) / (h0 || h1 < 0 && -0), + s1 = (y2 - that._y1) / (h1 || h0 < 0 && -0), + p = (s0 * h1 + s1 * h0) / (h0 + h1); + return (sign(s0) + sign(s1)) * Math.min(Math.abs(s0), Math.abs(s1), 0.5 * Math.abs(p)) || 0; } -function createBorderEdge(left, v0, v1) { - var edge = [v0, v1]; - edge.left = left; - return edge; +// Calculate a one-sided slope. +function slope2(that, t) { + var h = that._x1 - that._x0; + return h ? (3 * (that._y1 - that._y0) / h - t) / 2 : t; } -function setEdgeEnd(edge, left, right, vertex) { - if (!edge[0] && !edge[1]) { - edge[0] = vertex; - edge.left = left; - edge.right = right; - } else if (edge.left === right) { - edge[1] = vertex; - } else { - edge[0] = vertex; - } +// According to https://en.wikipedia.org/wiki/Cubic_Hermite_spline#Representations +// "you can express cubic Hermite interpolation in terms of cubic Bézier curves +// with respect to the four values p0, p0 + m0 / 3, p1 - m1 / 3, p1". +function point(that, t0, t1) { + var x0 = that._x0, + y0 = that._y0, + x1 = that._x1, + y1 = that._y1, + dx = (x1 - x0) / 3; + that._context.bezierCurveTo(x0 + dx, y0 + dx * t0, x1 - dx, y1 - dx * t1, x1, y1); } -// Liang–Barsky line clipping. -function clipEdge(edge, x0, y0, x1, y1) { - var a = edge[0], - b = edge[1], - ax = a[0], - ay = a[1], - bx = b[0], - by = b[1], - t0 = 0, - t1 = 1, - dx = bx - ax, - dy = by - ay, - r; - - r = x0 - ax; - if (!dx && r > 0) return; - r /= dx; - if (dx < 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } else if (dx > 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } - - r = x1 - ax; - if (!dx && r < 0) return; - r /= dx; - if (dx < 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } else if (dx > 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } - - r = y0 - ay; - if (!dy && r > 0) return; - r /= dy; - if (dy < 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } else if (dy > 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } - - r = y1 - ay; - if (!dy && r < 0) return; - r /= dy; - if (dy < 0) { - if (r > t1) return; - if (r > t0) t0 = r; - } else if (dy > 0) { - if (r < t0) return; - if (r < t1) t1 = r; - } - - if (!(t0 > 0) && !(t1 < 1)) return true; // TODO Better check? - - if (t0 > 0) edge[0] = [ax + t0 * dx, ay + t0 * dy]; - if (t1 < 1) edge[1] = [ax + t1 * dx, ay + t1 * dy]; - return true; +function MonotoneX(context) { + this._context = context; } -function connectEdge(edge, x0, y0, x1, y1) { - var v1 = edge[1]; - if (v1) return true; - - var v0 = edge[0], - left = edge.left, - right = edge.right, - lx = left[0], - ly = left[1], - rx = right[0], - ry = right[1], - fx = (lx + rx) / 2, - fy = (ly + ry) / 2, - fm, - fb; - - if (ry === ly) { - if (fx < x0 || fx >= x1) return; - if (lx > rx) { - if (!v0) v0 = [fx, y0]; - else if (v0[1] >= y1) return; - v1 = [fx, y1]; - } else { - if (!v0) v0 = [fx, y1]; - else if (v0[1] < y0) return; - v1 = [fx, y0]; +MonotoneX.prototype = { + areaStart: function() { + this._line = 0; + }, + areaEnd: function() { + this._line = NaN; + }, + lineStart: function() { + this._x0 = this._x1 = + this._y0 = this._y1 = + this._t0 = NaN; + this._point = 0; + }, + lineEnd: function() { + switch (this._point) { + case 2: this._context.lineTo(this._x1, this._y1); break; + case 3: point(this, this._t0, slope2(this, this._t0)); break; } - } else { - fm = (lx - rx) / (ry - ly); - fb = fy - fm * fx; - if (fm < -1 || fm > 1) { - if (lx > rx) { - if (!v0) v0 = [(y0 - fb) / fm, y0]; - else if (v0[1] >= y1) return; - v1 = [(y1 - fb) / fm, y1]; - } else { - if (!v0) v0 = [(y1 - fb) / fm, y1]; - else if (v0[1] < y0) return; - v1 = [(y0 - fb) / fm, y0]; - } - } else { - if (ly < ry) { - if (!v0) v0 = [x0, fm * x0 + fb]; - else if (v0[0] >= x1) return; - v1 = [x1, fm * x1 + fb]; - } else { - if (!v0) v0 = [x1, fm * x1 + fb]; - else if (v0[0] < x0) return; - v1 = [x0, fm * x0 + fb]; - } + if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); + this._line = 1 - this._line; + }, + point: function(x, y) { + var t1 = NaN; + + x = +x, y = +y; + if (x === this._x1 && y === this._y1) return; // Ignore coincident points. + switch (this._point) { + case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; + case 1: this._point = 2; break; + case 2: this._point = 3; point(this, slope2(this, t1 = slope3(this, x, y)), t1); break; + default: point(this, this._t0, t1 = slope3(this, x, y)); break; } + + this._x0 = this._x1, this._x1 = x; + this._y0 = this._y1, this._y1 = y; + this._t0 = t1; } +}; - edge[0] = v0; - edge[1] = v1; - return true; +function MonotoneY(context) { + this._context = new ReflectContext(context); } -function clipEdges(x0, y0, x1, y1) { - var i = edges.length, - edge; +(MonotoneY.prototype = Object.create(MonotoneX.prototype)).point = function(x, y) { + MonotoneX.prototype.point.call(this, y, x); +}; - while (i--) { - if (!connectEdge(edge = edges[i], x0, y0, x1, y1) - || !clipEdge(edge, x0, y0, x1, y1) - || !(Math.abs(edge[0][0] - edge[1][0]) > epsilon$4 - || Math.abs(edge[0][1] - edge[1][1]) > epsilon$4)) { - delete edges[i]; - } - } +function ReflectContext(context) { + this._context = context; } -function createCell(site) { - return cells[site.index] = { - site: site, - halfedges: [] - }; -} +ReflectContext.prototype = { + moveTo: function(x, y) { this._context.moveTo(y, x); }, + closePath: function() { this._context.closePath(); }, + lineTo: function(x, y) { this._context.lineTo(y, x); }, + bezierCurveTo: function(x1, y1, x2, y2, x, y) { this._context.bezierCurveTo(y1, x1, y2, x2, y, x); } +}; -function cellHalfedgeAngle(cell, edge) { - var site = cell.site, - va = edge.left, - vb = edge.right; - if (site === vb) vb = va, va = site; - if (vb) return Math.atan2(vb[1] - va[1], vb[0] - va[0]); - if (site === va) va = edge[1], vb = edge[0]; - else va = edge[0], vb = edge[1]; - return Math.atan2(va[0] - vb[0], vb[1] - va[1]); +function monotoneX(context) { + return new MonotoneX(context); } -function cellHalfedgeStart(cell, edge) { - return edge[+(edge.left !== cell.site)]; +function monotoneY(context) { + return new MonotoneY(context); } -function cellHalfedgeEnd(cell, edge) { - return edge[+(edge.left === cell.site)]; +function Natural(context) { + this._context = context; } -function sortCellHalfedges() { - for (var i = 0, n = cells.length, cell, halfedges, j, m; i < n; ++i) { - if ((cell = cells[i]) && (m = (halfedges = cell.halfedges).length)) { - var index = new Array(m), - array = new Array(m); - for (j = 0; j < m; ++j) index[j] = j, array[j] = cellHalfedgeAngle(cell, edges[halfedges[j]]); - index.sort(function(i, j) { return array[j] - array[i]; }); - for (j = 0; j < m; ++j) array[j] = halfedges[index[j]]; - for (j = 0; j < m; ++j) halfedges[j] = array[j]; +Natural.prototype = { + areaStart: function() { + this._line = 0; + }, + areaEnd: function() { + this._line = NaN; + }, + lineStart: function() { + this._x = []; + this._y = []; + }, + lineEnd: function() { + var x = this._x, + y = this._y, + n = x.length; + + if (n) { + this._line ? this._context.lineTo(x[0], y[0]) : this._context.moveTo(x[0], y[0]); + if (n === 2) { + this._context.lineTo(x[1], y[1]); + } else { + var px = controlPoints(x), + py = controlPoints(y); + for (var i0 = 0, i1 = 1; i1 < n; ++i0, ++i1) { + this._context.bezierCurveTo(px[0][i0], py[0][i0], px[1][i0], py[1][i0], x[i1], y[i1]); + } + } } + + if (this._line || (this._line !== 0 && n === 1)) this._context.closePath(); + this._line = 1 - this._line; + this._x = this._y = null; + }, + point: function(x, y) { + this._x.push(+x); + this._y.push(+y); } -} +}; -function clipCells(x0, y0, x1, y1) { - var nCells = cells.length, - iCell, - cell, - site, - iHalfedge, - halfedges, - nHalfedges, - start, - startX, - startY, - end, - endX, - endY, - cover = true; +// See https://www.particleincell.com/2012/bezier-splines/ for derivation. +function controlPoints(x) { + var i, + n = x.length - 1, + m, + a = new Array(n), + b = new Array(n), + r = new Array(n); + a[0] = 0, b[0] = 2, r[0] = x[0] + 2 * x[1]; + for (i = 1; i < n - 1; ++i) a[i] = 1, b[i] = 4, r[i] = 4 * x[i] + 2 * x[i + 1]; + a[n - 1] = 2, b[n - 1] = 7, r[n - 1] = 8 * x[n - 1] + x[n]; + for (i = 1; i < n; ++i) m = a[i] / b[i - 1], b[i] -= m, r[i] -= m * r[i - 1]; + a[n - 1] = r[n - 1] / b[n - 1]; + for (i = n - 2; i >= 0; --i) a[i] = (r[i] - a[i + 1]) / b[i]; + b[n - 1] = (x[n] + a[n - 1]) / 2; + for (i = 0; i < n - 1; ++i) b[i] = 2 * x[i + 1] - a[i + 1]; + return [a, b]; +} - for (iCell = 0; iCell < nCells; ++iCell) { - if (cell = cells[iCell]) { - site = cell.site; - halfedges = cell.halfedges; - iHalfedge = halfedges.length; +function natural(context) { + return new Natural(context); +} - // Remove any dangling clipped edges. - while (iHalfedge--) { - if (!edges[halfedges[iHalfedge]]) { - halfedges.splice(iHalfedge, 1); - } - } +function Step(context, t) { + this._context = context; + this._t = t; +} - // Insert any border edges as necessary. - iHalfedge = 0, nHalfedges = halfedges.length; - while (iHalfedge < nHalfedges) { - end = cellHalfedgeEnd(cell, edges[halfedges[iHalfedge]]), endX = end[0], endY = end[1]; - start = cellHalfedgeStart(cell, edges[halfedges[++iHalfedge % nHalfedges]]), startX = start[0], startY = start[1]; - if (Math.abs(endX - startX) > epsilon$4 || Math.abs(endY - startY) > epsilon$4) { - halfedges.splice(iHalfedge, 0, edges.push(createBorderEdge(site, end, - Math.abs(endX - x0) < epsilon$4 && y1 - endY > epsilon$4 ? [x0, Math.abs(startX - x0) < epsilon$4 ? startY : y1] - : Math.abs(endY - y1) < epsilon$4 && x1 - endX > epsilon$4 ? [Math.abs(startY - y1) < epsilon$4 ? startX : x1, y1] - : Math.abs(endX - x1) < epsilon$4 && endY - y0 > epsilon$4 ? [x1, Math.abs(startX - x1) < epsilon$4 ? startY : y0] - : Math.abs(endY - y0) < epsilon$4 && endX - x0 > epsilon$4 ? [Math.abs(startY - y0) < epsilon$4 ? startX : x0, y0] - : null)) - 1); - ++nHalfedges; +Step.prototype = { + areaStart: function() { + this._line = 0; + }, + areaEnd: function() { + this._line = NaN; + }, + lineStart: function() { + this._x = this._y = NaN; + this._point = 0; + }, + lineEnd: function() { + if (0 < this._t && this._t < 1 && this._point === 2) this._context.lineTo(this._x, this._y); + if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath(); + if (this._line >= 0) this._t = 1 - this._t, this._line = 1 - this._line; + }, + point: function(x, y) { + x = +x, y = +y; + switch (this._point) { + case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break; + case 1: this._point = 2; // proceed + default: { + if (this._t <= 0) { + this._context.lineTo(this._x, y); + this._context.lineTo(x, y); + } else { + var x1 = this._x * (1 - this._t) + x * this._t; + this._context.lineTo(x1, this._y); + this._context.lineTo(x1, y); } + break; } - - if (nHalfedges) cover = false; - } - } - - // If there weren’t any edges, have the closest site cover the extent. - // It doesn’t matter which corner of the extent we measure! - if (cover) { - var dx, dy, d2, dc = Infinity; - - for (iCell = 0, cover = null; iCell < nCells; ++iCell) { - if (cell = cells[iCell]) { - site = cell.site; - dx = site[0] - x0; - dy = site[1] - y0; - d2 = dx * dx + dy * dy; - if (d2 < dc) dc = d2, cover = cell; - } - } - - if (cover) { - var v00 = [x0, y0], v01 = [x0, y1], v11 = [x1, y1], v10 = [x1, y0]; - cover.halfedges.push( - edges.push(createBorderEdge(site = cover.site, v00, v01)) - 1, - edges.push(createBorderEdge(site, v01, v11)) - 1, - edges.push(createBorderEdge(site, v11, v10)) - 1, - edges.push(createBorderEdge(site, v10, v00)) - 1 - ); } + this._x = x, this._y = y; } +}; - // Lastly delete any cells with no edges; these were entirely clipped. - for (iCell = 0; iCell < nCells; ++iCell) { - if (cell = cells[iCell]) { - if (!cell.halfedges.length) { - delete cells[iCell]; - } - } - } +function step(context) { + return new Step(context, 0.5); } -var circlePool = []; - -var firstCircle; - -function Circle() { - RedBlackNode(this); - this.x = - this.y = - this.arc = - this.site = - this.cy = null; +function stepBefore(context) { + return new Step(context, 0); } -function attachCircle(arc) { - var lArc = arc.P, - rArc = arc.N; - - if (!lArc || !rArc) return; - - var lSite = lArc.site, - cSite = arc.site, - rSite = rArc.site; - - if (lSite === rSite) return; - - var bx = cSite[0], - by = cSite[1], - ax = lSite[0] - bx, - ay = lSite[1] - by, - cx = rSite[0] - bx, - cy = rSite[1] - by; - - var d = 2 * (ax * cy - ay * cx); - if (d >= -epsilon2$2) return; - - var ha = ax * ax + ay * ay, - hc = cx * cx + cy * cy, - x = (cy * ha - ay * hc) / d, - y = (ax * hc - cx * ha) / d; - - var circle = circlePool.pop() || new Circle; - circle.arc = arc; - circle.site = cSite; - circle.x = x + bx; - circle.y = (circle.cy = y + by) + Math.sqrt(x * x + y * y); // y bottom - - arc.circle = circle; - - var before = null, - node = circles._; - - while (node) { - if (circle.y < node.y || (circle.y === node.y && circle.x <= node.x)) { - if (node.L) node = node.L; - else { before = node.P; break; } - } else { - if (node.R) node = node.R; - else { before = node; break; } - } - } - - circles.insert(before, circle); - if (!before) firstCircle = circle; +function stepAfter(context) { + return new Step(context, 1); } -function detachCircle(arc) { - var circle = arc.circle; - if (circle) { - if (!circle.P) firstCircle = circle.N; - circles.remove(circle); - circlePool.push(circle); - RedBlackNode(circle); - arc.circle = null; +function none$1(series, order) { + if (!((n = series.length) > 1)) return; + for (var i = 1, j, s0, s1 = series[order[0]], n, m = s1.length; i < n; ++i) { + s0 = s1, s1 = series[order[i]]; + for (j = 0; j < m; ++j) { + s1[j][1] += s1[j][0] = isNaN(s0[j][1]) ? s0[j][0] : s0[j][1]; + } } } -var beachPool = []; - -function Beach() { - RedBlackNode(this); - this.edge = - this.site = - this.circle = null; +function none(series) { + var n = series.length, o = new Array(n); + while (--n >= 0) o[n] = n; + return o; } -function createBeach(site) { - var beach = beachPool.pop() || new Beach; - beach.site = site; - return beach; +function stackValue(d, key) { + return d[key]; } -function detachBeach(beach) { - detachCircle(beach); - beaches.remove(beach); - beachPool.push(beach); - RedBlackNode(beach); +function stackSeries(key) { + const series = []; + series.key = key; + return series; } -function removeBeach(beach) { - var circle = beach.circle, - x = circle.x, - y = circle.cy, - vertex = [x, y], - previous = beach.P, - next = beach.N, - disappearing = [beach]; +function stack() { + var keys = constant$1([]), + order = none, + offset = none$1, + value = stackValue; - detachBeach(beach); + function stack(data) { + var sz = Array.from(keys.apply(this, arguments), stackSeries), + i, n = sz.length, j = -1, + oz; - var lArc = previous; - while (lArc.circle - && Math.abs(x - lArc.circle.x) < epsilon$4 - && Math.abs(y - lArc.circle.cy) < epsilon$4) { - previous = lArc.P; - disappearing.unshift(lArc); - detachBeach(lArc); - lArc = previous; - } + for (const d of data) { + for (i = 0, ++j; i < n; ++i) { + (sz[i][j] = [0, +value(d, sz[i].key, j, data)]).data = d; + } + } - disappearing.unshift(lArc); - detachCircle(lArc); + for (i = 0, oz = array(order(sz)); i < n; ++i) { + sz[oz[i]].index = i; + } - var rArc = next; - while (rArc.circle - && Math.abs(x - rArc.circle.x) < epsilon$4 - && Math.abs(y - rArc.circle.cy) < epsilon$4) { - next = rArc.N; - disappearing.push(rArc); - detachBeach(rArc); - rArc = next; + offset(sz, oz); + return sz; } - disappearing.push(rArc); - detachCircle(rArc); + stack.keys = function(_) { + return arguments.length ? (keys = typeof _ === "function" ? _ : constant$1(Array.from(_)), stack) : keys; + }; - var nArcs = disappearing.length, - iArc; - for (iArc = 1; iArc < nArcs; ++iArc) { - rArc = disappearing[iArc]; - lArc = disappearing[iArc - 1]; - setEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex); - } + stack.value = function(_) { + return arguments.length ? (value = typeof _ === "function" ? _ : constant$1(+_), stack) : value; + }; + + stack.order = function(_) { + return arguments.length ? (order = _ == null ? none : typeof _ === "function" ? _ : constant$1(Array.from(_)), stack) : order; + }; - lArc = disappearing[0]; - rArc = disappearing[nArcs - 1]; - rArc.edge = createEdge(lArc.site, rArc.site, null, vertex); + stack.offset = function(_) { + return arguments.length ? (offset = _ == null ? none$1 : _, stack) : offset; + }; - attachCircle(lArc); - attachCircle(rArc); + return stack; } -function addBeach(site) { - var x = site[0], - directrix = site[1], - lArc, - rArc, - dxl, - dxr, - node = beaches._; +function expand(series, order) { + if (!((n = series.length) > 0)) return; + for (var i, n, j = 0, m = series[0].length, y; j < m; ++j) { + for (y = i = 0; i < n; ++i) y += series[i][j][1] || 0; + if (y) for (i = 0; i < n; ++i) series[i][j][1] /= y; + } + none$1(series, order); +} - while (node) { - dxl = leftBreakPoint(node, directrix) - x; - if (dxl > epsilon$4) node = node.L; else { - dxr = x - rightBreakPoint(node, directrix); - if (dxr > epsilon$4) { - if (!node.R) { - lArc = node; - break; - } - node = node.R; +function diverging(series, order) { + if (!((n = series.length) > 0)) return; + for (var i, j = 0, d, dy, yp, yn, n, m = series[order[0]].length; j < m; ++j) { + for (yp = yn = 0, i = 0; i < n; ++i) { + if ((dy = (d = series[order[i]][j])[1] - d[0]) > 0) { + d[0] = yp, d[1] = yp += dy; + } else if (dy < 0) { + d[1] = yn, d[0] = yn += dy; } else { - if (dxl > -epsilon$4) { - lArc = node.P; - rArc = node; - } else if (dxr > -epsilon$4) { - lArc = node; - rArc = node.N; - } else { - lArc = rArc = node; - } - break; + d[0] = 0, d[1] = dy; } } } +} - createCell(site); - var newArc = createBeach(site); - beaches.insert(lArc, newArc); - - if (!lArc && !rArc) return; - - if (lArc === rArc) { - detachCircle(lArc); - rArc = createBeach(lArc.site); - beaches.insert(newArc, rArc); - newArc.edge = rArc.edge = createEdge(lArc.site, newArc.site); - attachCircle(lArc); - attachCircle(rArc); - return; +function silhouette(series, order) { + if (!((n = series.length) > 0)) return; + for (var j = 0, s0 = series[order[0]], n, m = s0.length; j < m; ++j) { + for (var i = 0, y = 0; i < n; ++i) y += series[i][j][1] || 0; + s0[j][1] += s0[j][0] = -y / 2; } + none$1(series, order); +} - if (!rArc) { // && lArc - newArc.edge = createEdge(lArc.site, newArc.site); - return; +function wiggle(series, order) { + if (!((n = series.length) > 0) || !((m = (s0 = series[order[0]]).length) > 0)) return; + for (var y = 0, j = 1, s0, m, n; j < m; ++j) { + for (var i = 0, s1 = 0, s2 = 0; i < n; ++i) { + var si = series[order[i]], + sij0 = si[j][1] || 0, + sij1 = si[j - 1][1] || 0, + s3 = (sij0 - sij1) / 2; + for (var k = 0; k < i; ++k) { + var sk = series[order[k]], + skj0 = sk[j][1] || 0, + skj1 = sk[j - 1][1] || 0; + s3 += skj0 - skj1; + } + s1 += sij0, s2 += s3 * sij0; + } + s0[j - 1][1] += s0[j - 1][0] = y; + if (s1) y -= s2 / s1; } - - // else lArc !== rArc - detachCircle(lArc); - detachCircle(rArc); - - var lSite = lArc.site, - ax = lSite[0], - ay = lSite[1], - bx = site[0] - ax, - by = site[1] - ay, - rSite = rArc.site, - cx = rSite[0] - ax, - cy = rSite[1] - ay, - d = 2 * (bx * cy - by * cx), - hb = bx * bx + by * by, - hc = cx * cx + cy * cy, - vertex = [(cy * hb - by * hc) / d + ax, (bx * hc - cx * hb) / d + ay]; - - setEdgeEnd(rArc.edge, lSite, rSite, vertex); - newArc.edge = createEdge(lSite, site, null, vertex); - rArc.edge = createEdge(site, rSite, null, vertex); - attachCircle(lArc); - attachCircle(rArc); + s0[j - 1][1] += s0[j - 1][0] = y; + none$1(series, order); } -function leftBreakPoint(arc, directrix) { - var site = arc.site, - rfocx = site[0], - rfocy = site[1], - pby2 = rfocy - directrix; - - if (!pby2) return rfocx; - - var lArc = arc.P; - if (!lArc) return -Infinity; - - site = lArc.site; - var lfocx = site[0], - lfocy = site[1], - plby2 = lfocy - directrix; - - if (!plby2) return lfocx; - - var hl = lfocx - rfocx, - aby2 = 1 / pby2 - 1 / plby2, - b = hl / plby2; - - if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx; - - return (rfocx + lfocx) / 2; +function appearance(series) { + var peaks = series.map(peak); + return none(series).sort(function(a, b) { return peaks[a] - peaks[b]; }); } -function rightBreakPoint(arc, directrix) { - var rArc = arc.N; - if (rArc) return leftBreakPoint(rArc, directrix); - var site = arc.site; - return site[1] === directrix ? site[0] : Infinity; +function peak(series) { + var i = -1, j = 0, n = series.length, vi, vj = -Infinity; + while (++i < n) if ((vi = +series[i][1]) > vj) vj = vi, j = i; + return j; } -var epsilon$4 = 1e-6; -var epsilon2$2 = 1e-12; -var beaches; -var cells; -var circles; -var edges; - -function triangleArea(a, b, c) { - return (a[0] - c[0]) * (b[1] - a[1]) - (a[0] - b[0]) * (c[1] - a[1]); +function ascending(series) { + var sums = series.map(sum); + return none(series).sort(function(a, b) { return sums[a] - sums[b]; }); } -function lexicographic(a, b) { - return b[1] - a[1] - || b[0] - a[0]; +function sum(series) { + var s = 0, i = -1, n = series.length, v; + while (++i < n) if (v = +series[i][1]) s += v; + return s; } -function Diagram(sites, extent) { - var site = sites.sort(lexicographic).pop(), - x, - y, - circle; +function descending(series) { + return ascending(series).reverse(); +} - edges = []; - cells = new Array(sites.length); - beaches = new RedBlackTree; - circles = new RedBlackTree; +function insideOut(series) { + var n = series.length, + i, + j, + sums = series.map(sum), + order = appearance(series), + top = 0, + bottom = 0, + tops = [], + bottoms = []; - while (true) { - circle = firstCircle; - if (site && (!circle || site[1] < circle.y || (site[1] === circle.y && site[0] < circle.x))) { - if (site[0] !== x || site[1] !== y) { - addBeach(site); - x = site[0], y = site[1]; - } - site = sites.pop(); - } else if (circle) { - removeBeach(circle.arc); + for (i = 0; i < n; ++i) { + j = order[i]; + if (top < bottom) { + top += sums[j]; + tops.push(j); } else { - break; + bottom += sums[j]; + bottoms.push(j); } } - sortCellHalfedges(); - - if (extent) { - var x0 = +extent[0][0], - y0 = +extent[0][1], - x1 = +extent[1][0], - y1 = +extent[1][1]; - clipEdges(x0, y0, x1, y1); - clipCells(x0, y0, x1, y1); - } - - this.edges = edges; - this.cells = cells; - - beaches = - circles = - edges = - cells = null; -} - -Diagram.prototype = { - constructor: Diagram, - - polygons: function() { - var edges = this.edges; - - return this.cells.map(function(cell) { - var polygon = cell.halfedges.map(function(i) { return cellHalfedgeStart(cell, edges[i]); }); - polygon.data = cell.site.data; - return polygon; - }); - }, - - triangles: function() { - var triangles = [], - edges = this.edges; - - this.cells.forEach(function(cell, i) { - if (!(m = (halfedges = cell.halfedges).length)) return; - var site = cell.site, - halfedges, - j = -1, - m, - s0, - e1 = edges[halfedges[m - 1]], - s1 = e1.left === site ? e1.right : e1.left; - - while (++j < m) { - s0 = s1; - e1 = edges[halfedges[j]]; - s1 = e1.left === site ? e1.right : e1.left; - if (s0 && s1 && i < s0.index && i < s1.index && triangleArea(site, s0, s1) < 0) { - triangles.push([site.data, s0.data, s1.data]); - } - } - }); - - return triangles; - }, - - links: function() { - return this.edges.filter(function(edge) { - return edge.right; - }).map(function(edge) { - return { - source: edge.left.data, - target: edge.right.data - }; - }); - }, - - find: function(x, y, radius) { - var that = this, i0, i1 = that._found || 0, n = that.cells.length, cell; - - // Use the previously-found cell, or start with an arbitrary one. - while (!(cell = that.cells[i1])) if (++i1 >= n) return null; - var dx = x - cell.site[0], dy = y - cell.site[1], d2 = dx * dx + dy * dy; - - // Traverse the half-edges to find a closer cell, if any. - do { - cell = that.cells[i0 = i1], i1 = null; - cell.halfedges.forEach(function(e) { - var edge = that.edges[e], v = edge.left; - if ((v === cell.site || !v) && !(v = edge.right)) return; - var vx = x - v[0], vy = y - v[1], v2 = vx * vx + vy * vy; - if (v2 < d2) d2 = v2, i1 = v.index; - }); - } while (i1 !== null); - - that._found = i0; - - return radius == null || d2 <= radius * radius ? cell.site : null; - } -}; - -function voronoi() { - var x = x$4, - y = y$4, - extent = null; - - function voronoi(data) { - return new Diagram(data.map(function(d, i) { - var s = [Math.round(x(d, i, data) / epsilon$4) * epsilon$4, Math.round(y(d, i, data) / epsilon$4) * epsilon$4]; - s.index = i; - s.data = d; - return s; - }), extent); - } - - voronoi.polygons = function(data) { - return voronoi(data).polygons(); - }; - - voronoi.links = function(data) { - return voronoi(data).links(); - }; - - voronoi.triangles = function(data) { - return voronoi(data).triangles(); - }; - - voronoi.x = function(_) { - return arguments.length ? (x = typeof _ === "function" ? _ : constant$c(+_), voronoi) : x; - }; - - voronoi.y = function(_) { - return arguments.length ? (y = typeof _ === "function" ? _ : constant$c(+_), voronoi) : y; - }; - - voronoi.extent = function(_) { - return arguments.length ? (extent = _ == null ? null : [[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]], voronoi) : extent && [[extent[0][0], extent[0][1]], [extent[1][0], extent[1][1]]]; - }; - - voronoi.size = function(_) { - return arguments.length ? (extent = _ == null ? null : [[0, 0], [+_[0], +_[1]]], voronoi) : extent && [extent[1][0] - extent[0][0], extent[1][1] - extent[0][1]]; - }; - - return voronoi; -} - -function constant$d(x) { - return function() { - return x; - }; + return bottoms.reverse().concat(tops); } -function ZoomEvent(target, type, transform) { - this.target = target; - this.type = type; - this.transform = transform; +function reverse(series) { + return none(series).reverse(); +} + +var constant = x => () => x; + +function ZoomEvent(type, { + sourceEvent, + target, + transform, + dispatch +}) { + Object.defineProperties(this, { + type: {value: type, enumerable: true, configurable: true}, + sourceEvent: {value: sourceEvent, enumerable: true, configurable: true}, + target: {value: target, enumerable: true, configurable: true}, + transform: {value: transform, enumerable: true, configurable: true}, + _: {value: dispatch} + }); } function Transform(k, x, y) { @@ -17641,30 +18716,31 @@ Transform.prototype = { } }; -var identity$9 = new Transform(1, 0, 0); +var identity = new Transform(1, 0, 0); -transform$1.prototype = Transform.prototype; +transform.prototype = Transform.prototype; -function transform$1(node) { - while (!node.__zoom) if (!(node = node.parentNode)) return identity$9; +function transform(node) { + while (!node.__zoom) if (!(node = node.parentNode)) return identity; return node.__zoom; } -function nopropagation$2() { - exports.event.stopImmediatePropagation(); +function nopropagation(event) { + event.stopImmediatePropagation(); } -function noevent$2() { - exports.event.preventDefault(); - exports.event.stopImmediatePropagation(); +function noevent(event) { + event.preventDefault(); + event.stopImmediatePropagation(); } // Ignore right-click, since that should open the context menu. -function defaultFilter$2() { - return !exports.event.ctrlKey && !exports.event.button; +// except for pinch-to-zoom, which is sent as a wheel+ctrlKey event +function defaultFilter(event) { + return (!event.ctrlKey || event.type === 'wheel') && !event.button; } -function defaultExtent$1() { +function defaultExtent() { var e = this; if (e instanceof SVGElement) { e = e.ownerSVGElement || e; @@ -17678,14 +18754,14 @@ function defaultExtent$1() { } function defaultTransform() { - return this.__zoom || identity$9; + return this.__zoom || identity; } -function defaultWheelDelta() { - return -exports.event.deltaY * (exports.event.deltaMode === 1 ? 0.05 : exports.event.deltaMode ? 1 : 0.002); +function defaultWheelDelta(event) { + return -event.deltaY * (event.deltaMode === 1 ? 0.05 : event.deltaMode ? 1 : 0.002) * (event.ctrlKey ? 10 : 1); } -function defaultTouchable$2() { +function defaultTouchable() { return navigator.maxTouchPoints || ("ontouchstart" in this); } @@ -17701,21 +18777,23 @@ function defaultConstrain(transform, extent, translateExtent) { } function zoom() { - var filter = defaultFilter$2, - extent = defaultExtent$1, + var filter = defaultFilter, + extent = defaultExtent, constrain = defaultConstrain, wheelDelta = defaultWheelDelta, - touchable = defaultTouchable$2, + touchable = defaultTouchable, scaleExtent = [0, Infinity], translateExtent = [[-Infinity, -Infinity], [Infinity, Infinity]], duration = 250, interpolate = interpolateZoom, listeners = dispatch("start", "zoom", "end"), touchstarting, + touchfirst, touchending, touchDelay = 500, wheelDelay = 150, - clickDistance2 = 0; + clickDistance2 = 0, + tapDistance = 10; function zoom(selection) { selection @@ -17727,34 +18805,34 @@ function zoom() { .on("touchstart.zoom", touchstarted) .on("touchmove.zoom", touchmoved) .on("touchend.zoom touchcancel.zoom", touchended) - .style("touch-action", "none") .style("-webkit-tap-highlight-color", "rgba(0,0,0,0)"); } - zoom.transform = function(collection, transform, point) { + zoom.transform = function(collection, transform, point, event) { var selection = collection.selection ? collection.selection() : collection; selection.property("__zoom", defaultTransform); if (collection !== selection) { - schedule(collection, transform, point); + schedule(collection, transform, point, event); } else { selection.interrupt().each(function() { gesture(this, arguments) - .start() - .zoom(null, typeof transform === "function" ? transform.apply(this, arguments) : transform) - .end(); + .event(event) + .start() + .zoom(null, typeof transform === "function" ? transform.apply(this, arguments) : transform) + .end(); }); } }; - zoom.scaleBy = function(selection, k, p) { + zoom.scaleBy = function(selection, k, p, event) { zoom.scaleTo(selection, function() { var k0 = this.__zoom.k, k1 = typeof k === "function" ? k.apply(this, arguments) : k; return k0 * k1; - }, p); + }, p, event); }; - zoom.scaleTo = function(selection, k, p) { + zoom.scaleTo = function(selection, k, p, event) { zoom.transform(selection, function() { var e = extent.apply(this, arguments), t0 = this.__zoom, @@ -17762,28 +18840,28 @@ function zoom() { p1 = t0.invert(p0), k1 = typeof k === "function" ? k.apply(this, arguments) : k; return constrain(translate(scale(t0, k1), p0, p1), e, translateExtent); - }, p); + }, p, event); }; - zoom.translateBy = function(selection, x, y) { + zoom.translateBy = function(selection, x, y, event) { zoom.transform(selection, function() { return constrain(this.__zoom.translate( typeof x === "function" ? x.apply(this, arguments) : x, typeof y === "function" ? y.apply(this, arguments) : y ), extent.apply(this, arguments), translateExtent); - }); + }, null, event); }; - zoom.translateTo = function(selection, x, y, p) { + zoom.translateTo = function(selection, x, y, p, event) { zoom.transform(selection, function() { var e = extent.apply(this, arguments), t = this.__zoom, p0 = p == null ? centroid(e) : typeof p === "function" ? p.apply(this, arguments) : p; - return constrain(identity$9.translate(p0[0], p0[1]).scale(t.k).translate( + return constrain(identity.translate(p0[0], p0[1]).scale(t.k).translate( typeof x === "function" ? -x.apply(this, arguments) : -x, typeof y === "function" ? -y.apply(this, arguments) : -y ), e, translateExtent); - }, p); + }, p, event); }; function scale(transform, k) { @@ -17800,14 +18878,14 @@ function zoom() { return [(+extent[0][0] + +extent[1][0]) / 2, (+extent[0][1] + +extent[1][1]) / 2]; } - function schedule(transition, transform, point) { + function schedule(transition, transform, point, event) { transition - .on("start.zoom", function() { gesture(this, arguments).start(); }) - .on("interrupt.zoom end.zoom", function() { gesture(this, arguments).end(); }) + .on("start.zoom", function() { gesture(this, arguments).event(event).start(); }) + .on("interrupt.zoom end.zoom", function() { gesture(this, arguments).event(event).end(); }) .tween("zoom", function() { var that = this, args = arguments, - g = gesture(that, args), + g = gesture(that, args).event(event), e = extent.apply(that, args), p = point == null ? centroid(e) : typeof point === "function" ? point.apply(that, args) : point, w = Math.max(e[1][0] - e[0][0], e[1][1] - e[0][1]), @@ -17830,11 +18908,16 @@ function zoom() { this.that = that; this.args = args; this.active = 0; + this.sourceEvent = null; this.extent = extent.apply(that, args); this.taps = 0; } Gesture.prototype = { + event: function(event) { + if (event) this.sourceEvent = event; + return this; + }, start: function() { if (++this.active === 1) { this.that.__zooming = this; @@ -17858,16 +18941,28 @@ function zoom() { return this; }, emit: function(type) { - customEvent(new ZoomEvent(zoom, type, this.that.__zoom), listeners.apply, listeners, [type, this.that, this.args]); + var d = select(this.that).datum(); + listeners.call( + type, + this.that, + new ZoomEvent(type, { + sourceEvent: this.sourceEvent, + target: zoom, + type, + transform: this.that.__zoom, + dispatch: listeners + }), + d + ); } }; - function wheeled() { + function wheeled(event, ...args) { if (!filter.apply(this, arguments)) return; - var g = gesture(this, arguments), + var g = gesture(this, args).event(event), t = this.__zoom, k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], t.k * Math.pow(2, wheelDelta.apply(this, arguments)))), - p = mouse(this); + p = pointer(event); // If the mouse is in the same location as before, reuse it. // If there were recent wheel events, reset the wheel idle timeout. @@ -17888,7 +18983,7 @@ function zoom() { g.start(); } - noevent$2(); + noevent(event); g.wheel = setTimeout(wheelidled, wheelDelay); g.zoom("mouse", constrain(translate(scale(t, k), g.mouse[0], g.mouse[1]), g.extent, translateExtent)); @@ -17898,60 +18993,62 @@ function zoom() { } } - function mousedowned() { + function mousedowned(event, ...args) { if (touchending || !filter.apply(this, arguments)) return; - var g = gesture(this, arguments, true), - v = select(exports.event.view).on("mousemove.zoom", mousemoved, true).on("mouseup.zoom", mouseupped, true), - p = mouse(this), - x0 = exports.event.clientX, - y0 = exports.event.clientY; - - dragDisable(exports.event.view); - nopropagation$2(); + var g = gesture(this, args, true).event(event), + v = select(event.view).on("mousemove.zoom", mousemoved, true).on("mouseup.zoom", mouseupped, true), + p = pointer(event, currentTarget), + currentTarget = event.currentTarget, + x0 = event.clientX, + y0 = event.clientY; + + dragDisable(event.view); + nopropagation(event); g.mouse = [p, this.__zoom.invert(p)]; interrupt(this); g.start(); - function mousemoved() { - noevent$2(); + function mousemoved(event) { + noevent(event); if (!g.moved) { - var dx = exports.event.clientX - x0, dy = exports.event.clientY - y0; + var dx = event.clientX - x0, dy = event.clientY - y0; g.moved = dx * dx + dy * dy > clickDistance2; } - g.zoom("mouse", constrain(translate(g.that.__zoom, g.mouse[0] = mouse(g.that), g.mouse[1]), g.extent, translateExtent)); + g.event(event) + .zoom("mouse", constrain(translate(g.that.__zoom, g.mouse[0] = pointer(event, currentTarget), g.mouse[1]), g.extent, translateExtent)); } - function mouseupped() { + function mouseupped(event) { v.on("mousemove.zoom mouseup.zoom", null); - yesdrag(exports.event.view, g.moved); - noevent$2(); - g.end(); + yesdrag(event.view, g.moved); + noevent(event); + g.event(event).end(); } } - function dblclicked() { + function dblclicked(event, ...args) { if (!filter.apply(this, arguments)) return; var t0 = this.__zoom, - p0 = mouse(this), + p0 = pointer(event.changedTouches ? event.changedTouches[0] : event, this), p1 = t0.invert(p0), - k1 = t0.k * (exports.event.shiftKey ? 0.5 : 2), - t1 = constrain(translate(scale(t0, k1), p0, p1), extent.apply(this, arguments), translateExtent); + k1 = t0.k * (event.shiftKey ? 0.5 : 2), + t1 = constrain(translate(scale(t0, k1), p0, p1), extent.apply(this, args), translateExtent); - noevent$2(); - if (duration > 0) select(this).transition().duration(duration).call(schedule, t1, p0); - else select(this).call(zoom.transform, t1); + noevent(event); + if (duration > 0) select(this).transition().duration(duration).call(schedule, t1, p0, event); + else select(this).call(zoom.transform, t1, p0, event); } - function touchstarted() { + function touchstarted(event, ...args) { if (!filter.apply(this, arguments)) return; - var touches = exports.event.touches, + var touches = event.touches, n = touches.length, - g = gesture(this, arguments, exports.event.changedTouches.length === n), + g = gesture(this, args, event.changedTouches.length === n).event(event), started, i, t, p; - nopropagation$2(); + nopropagation(event); for (i = 0; i < n; ++i) { - t = touches[i], p = touch(this, touches, t.identifier); + t = touches[i], p = pointer(t, this); p = [p, this.__zoom.invert(p), t.identifier]; if (!g.touch0) g.touch0 = p, started = true, g.taps = 1 + !!touchstarting; else if (!g.touch1 && g.touch0[2] !== p[2]) g.touch1 = p, g.taps = 0; @@ -17960,23 +19057,21 @@ function zoom() { if (touchstarting) touchstarting = clearTimeout(touchstarting); if (started) { - if (g.taps < 2) touchstarting = setTimeout(function() { touchstarting = null; }, touchDelay); + if (g.taps < 2) touchfirst = p[0], touchstarting = setTimeout(function() { touchstarting = null; }, touchDelay); interrupt(this); g.start(); } } - function touchmoved() { + function touchmoved(event, ...args) { if (!this.__zooming) return; - var g = gesture(this, arguments), - touches = exports.event.changedTouches, + var g = gesture(this, args).event(event), + touches = event.changedTouches, n = touches.length, i, t, p, l; - noevent$2(); - if (touchstarting) touchstarting = clearTimeout(touchstarting); - g.taps = 0; + noevent(event); for (i = 0; i < n; ++i) { - t = touches[i], p = touch(this, touches, t.identifier); + t = touches[i], p = pointer(t, this); if (g.touch0 && g.touch0[2] === t.identifier) g.touch0[0] = p; else if (g.touch1 && g.touch1[2] === t.identifier) g.touch1[0] = p; } @@ -17992,16 +19087,17 @@ function zoom() { } else if (g.touch0) p = g.touch0[0], l = g.touch0[1]; else return; + g.zoom("touch", constrain(translate(t, p, l), g.extent, translateExtent)); } - function touchended() { + function touchended(event, ...args) { if (!this.__zooming) return; - var g = gesture(this, arguments), - touches = exports.event.changedTouches, + var g = gesture(this, args).event(event), + touches = event.changedTouches, n = touches.length, i, t; - nopropagation$2(); + nopropagation(event); if (touchending) clearTimeout(touchending); touchending = setTimeout(function() { touchending = null; }, touchDelay); for (i = 0; i < n; ++i) { @@ -18015,26 +19111,29 @@ function zoom() { g.end(); // If this was a dbltap, reroute to the (optional) dblclick.zoom handler. if (g.taps === 2) { - var p = select(this).on("dblclick.zoom"); - if (p) p.apply(this, arguments); + t = pointer(t, this); + if (Math.hypot(touchfirst[0] - t[0], touchfirst[1] - t[1]) < tapDistance) { + var p = select(this).on("dblclick.zoom"); + if (p) p.apply(this, arguments); + } } } } zoom.wheelDelta = function(_) { - return arguments.length ? (wheelDelta = typeof _ === "function" ? _ : constant$d(+_), zoom) : wheelDelta; + return arguments.length ? (wheelDelta = typeof _ === "function" ? _ : constant(+_), zoom) : wheelDelta; }; zoom.filter = function(_) { - return arguments.length ? (filter = typeof _ === "function" ? _ : constant$d(!!_), zoom) : filter; + return arguments.length ? (filter = typeof _ === "function" ? _ : constant(!!_), zoom) : filter; }; zoom.touchable = function(_) { - return arguments.length ? (touchable = typeof _ === "function" ? _ : constant$d(!!_), zoom) : touchable; + return arguments.length ? (touchable = typeof _ === "function" ? _ : constant(!!_), zoom) : touchable; }; zoom.extent = function(_) { - return arguments.length ? (extent = typeof _ === "function" ? _ : constant$d([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), zoom) : extent; + return arguments.length ? (extent = typeof _ === "function" ? _ : constant([[+_[0][0], +_[0][1]], [+_[1][0], +_[1][1]]]), zoom) : extent; }; zoom.scaleExtent = function(_) { @@ -18066,21 +19165,32 @@ function zoom() { return arguments.length ? (clickDistance2 = (_ = +_) * _, zoom) : Math.sqrt(clickDistance2); }; + zoom.tapDistance = function(_) { + return arguments.length ? (tapDistance = +_, zoom) : tapDistance; + }; + return zoom; } +exports.Adder = Adder; +exports.Delaunay = Delaunay; exports.FormatSpecifier = FormatSpecifier; +exports.InternMap = InternMap; +exports.InternSet = InternSet; +exports.Voronoi = Voronoi; exports.active = active; exports.arc = arc; -exports.area = area$3; +exports.area = area; exports.areaRadial = areaRadial; -exports.ascending = ascending; +exports.ascending = ascending$3; exports.autoType = autoType; exports.axisBottom = axisBottom; exports.axisLeft = axisLeft; exports.axisRight = axisRight; exports.axisTop = axisTop; +exports.bin = bin; exports.bisect = bisectRight; +exports.bisectCenter = bisectCenter; exports.bisectLeft = bisectLeft; exports.bisectRight = bisectRight; exports.bisector = bisector; @@ -18091,15 +19201,17 @@ exports.brushX = brushX; exports.brushY = brushY; exports.buffer = buffer; exports.chord = chord; -exports.clientPoint = point; +exports.chordDirected = chordDirected; +exports.chordTranspose = chordTranspose; exports.cluster = cluster; exports.color = color; exports.contourDensity = density; exports.contours = contours; -exports.create = create; +exports.count = count$1; +exports.create = create$1; exports.creator = creator; -exports.cross = cross; -exports.csv = csv$1; +exports.cross = cross$2; +exports.csv = csv; exports.csvFormat = csvFormat; exports.csvFormatBody = csvFormatBody; exports.csvFormatRow = csvFormatRow; @@ -18107,10 +19219,13 @@ exports.csvFormatRows = csvFormatRows; exports.csvFormatValue = csvFormatValue; exports.csvParse = csvParse; exports.csvParseRows = csvParseRows; -exports.cubehelix = cubehelix; -exports.curveBasis = basis$2; -exports.curveBasisClosed = basisClosed$1; +exports.cubehelix = cubehelix$3; +exports.cumsum = cumsum; +exports.curveBasis = basis; +exports.curveBasisClosed = basisClosed; exports.curveBasisOpen = basisOpen; +exports.curveBumpX = bumpX; +exports.curveBumpY = bumpY; exports.curveBundle = bundle; exports.curveCardinal = cardinal; exports.curveCardinalClosed = cardinalClosed; @@ -18126,9 +19241,10 @@ exports.curveNatural = natural; exports.curveStep = step; exports.curveStepAfter = stepAfter; exports.curveStepBefore = stepBefore; -exports.customEvent = customEvent; -exports.descending = descending; +exports.descending = descending$2; exports.deviation = deviation; +exports.difference = difference; +exports.disjoint = disjoint; exports.dispatch = dispatch; exports.drag = drag; exports.dragDisable = dragDisable; @@ -18172,32 +19288,35 @@ exports.easeSin = sinInOut; exports.easeSinIn = sinIn; exports.easeSinInOut = sinInOut; exports.easeSinOut = sinOut; -exports.entries = entries; -exports.extent = extent; -exports.forceCenter = center$1; +exports.every = every; +exports.extent = extent$1; +exports.fcumsum = fcumsum; +exports.filter = filter$1; +exports.forceCenter = center; exports.forceCollide = collide; -exports.forceLink = link; +exports.forceLink = link$2; exports.forceManyBody = manyBody; -exports.forceRadial = radial; +exports.forceRadial = radial$1; exports.forceSimulation = simulation; -exports.forceX = x$2; -exports.forceY = y$2; -exports.formatDefaultLocale = defaultLocale; -exports.formatLocale = formatLocale; +exports.forceX = x$1; +exports.forceY = y$1; +exports.formatDefaultLocale = defaultLocale$1; +exports.formatLocale = formatLocale$1; exports.formatSpecifier = formatSpecifier; +exports.fsum = fsum; exports.geoAlbers = albers; exports.geoAlbersUsa = albersUsa; -exports.geoArea = area$1; +exports.geoArea = area$2; exports.geoAzimuthalEqualArea = azimuthalEqualArea; exports.geoAzimuthalEqualAreaRaw = azimuthalEqualAreaRaw; exports.geoAzimuthalEquidistant = azimuthalEquidistant; exports.geoAzimuthalEquidistantRaw = azimuthalEquidistantRaw; exports.geoBounds = bounds; -exports.geoCentroid = centroid; -exports.geoCircle = circle; +exports.geoCentroid = centroid$1; +exports.geoCircle = circle$2; exports.geoClipAntimeridian = clipAntimeridian; exports.geoClipCircle = clipCircle; -exports.geoClipExtent = extent$1; +exports.geoClipExtent = extent; exports.geoClipRectangle = clipRectangle; exports.geoConicConformal = conicConformal; exports.geoConicConformalRaw = conicConformalRaw; @@ -18215,8 +19334,8 @@ exports.geoGnomonic = gnomonic; exports.geoGnomonicRaw = gnomonicRaw; exports.geoGraticule = graticule; exports.geoGraticule10 = graticule10; -exports.geoIdentity = identity$5; -exports.geoInterpolate = interpolate$1; +exports.geoIdentity = identity$4; +exports.geoInterpolate = interpolate; exports.geoLength = length$1; exports.geoMercator = mercator; exports.geoMercatorRaw = mercatorRaw; @@ -18224,27 +19343,34 @@ exports.geoNaturalEarth1 = naturalEarth1; exports.geoNaturalEarth1Raw = naturalEarth1Raw; exports.geoOrthographic = orthographic; exports.geoOrthographicRaw = orthographicRaw; -exports.geoPath = index$1; +exports.geoPath = index$2; exports.geoProjection = projection; exports.geoProjectionMutator = projectionMutator; exports.geoRotation = rotation; exports.geoStereographic = stereographic; exports.geoStereographicRaw = stereographicRaw; exports.geoStream = geoStream; -exports.geoTransform = transform; +exports.geoTransform = transform$1; exports.geoTransverseMercator = transverseMercator; exports.geoTransverseMercatorRaw = transverseMercatorRaw; exports.gray = gray; -exports.hcl = hcl; +exports.greatest = greatest; +exports.greatestIndex = greatestIndex; +exports.group = group; +exports.groupSort = groupSort; +exports.groups = groups; +exports.hcl = hcl$2; exports.hierarchy = hierarchy; -exports.histogram = histogram; -exports.hsl = hsl; +exports.histogram = bin; +exports.hsl = hsl$2; exports.html = html; exports.image = image; -exports.interpolate = interpolateValue; -exports.interpolateArray = array$1; -exports.interpolateBasis = basis$1; -exports.interpolateBasisClosed = basisClosed; +exports.index = index$4; +exports.indexes = indexes; +exports.interpolate = interpolate$2; +exports.interpolateArray = array$3; +exports.interpolateBasis = basis$2; +exports.interpolateBasisClosed = basisClosed$1; exports.interpolateBlues = Blues; exports.interpolateBrBG = BrBG; exports.interpolateBuGn = BuGn; @@ -18252,24 +19378,24 @@ exports.interpolateBuPu = BuPu; exports.interpolateCividis = cividis; exports.interpolateCool = cool; exports.interpolateCubehelix = cubehelix$2; -exports.interpolateCubehelixDefault = cubehelix$3; +exports.interpolateCubehelixDefault = cubehelix; exports.interpolateCubehelixLong = cubehelixLong; -exports.interpolateDate = date; +exports.interpolateDate = date$1; exports.interpolateDiscrete = discrete; exports.interpolateGnBu = GnBu; exports.interpolateGreens = Greens; exports.interpolateGreys = Greys; -exports.interpolateHcl = hcl$2; +exports.interpolateHcl = hcl$1; exports.interpolateHclLong = hclLong; -exports.interpolateHsl = hsl$2; +exports.interpolateHsl = hsl$1; exports.interpolateHslLong = hslLong; -exports.interpolateHue = hue$1; +exports.interpolateHue = hue; exports.interpolateInferno = inferno; -exports.interpolateLab = lab$1; +exports.interpolateLab = lab; exports.interpolateMagma = magma; exports.interpolateNumber = interpolateNumber; exports.interpolateNumberArray = numberArray; -exports.interpolateObject = object; +exports.interpolateObject = object$1; exports.interpolateOrRd = OrRd; exports.interpolateOranges = Oranges; exports.interpolatePRGn = PRGn; @@ -18305,32 +19431,35 @@ exports.interpolateYlOrBr = YlOrBr; exports.interpolateYlOrRd = YlOrRd; exports.interpolateZoom = interpolateZoom; exports.interrupt = interrupt; -exports.interval = interval$1; +exports.intersection = intersection; +exports.interval = interval; exports.isoFormat = formatIso; exports.isoParse = parseIso; exports.json = json; -exports.keys = keys; -exports.lab = lab; +exports.lab = lab$1; exports.lch = lch; +exports.least = least; +exports.leastIndex = leastIndex; exports.line = line; exports.lineRadial = lineRadial$1; exports.linkHorizontal = linkHorizontal; exports.linkRadial = linkRadial; exports.linkVertical = linkVertical; -exports.local = local; +exports.local = local$1; exports.map = map$1; exports.matcher = matcher; -exports.max = max; +exports.max = max$3; +exports.maxIndex = maxIndex; exports.mean = mean; exports.median = median; exports.merge = merge; -exports.min = min; -exports.mouse = mouse; +exports.min = min$2; +exports.minIndex = minIndex; exports.namespace = namespace; exports.namespaces = namespaces; -exports.nest = nest; +exports.nice = nice$1; exports.now = now; -exports.pack = index$2; +exports.pack = index$1; exports.packEnclose = enclose; exports.packSiblings = siblings; exports.pairs = pairs; @@ -18340,43 +19469,65 @@ exports.permute = permute; exports.pie = pie; exports.piecewise = piecewise; exports.pointRadial = pointRadial; -exports.polygonArea = area$2; -exports.polygonCentroid = centroid$1; -exports.polygonContains = contains$2; +exports.pointer = pointer; +exports.pointers = pointers; +exports.polygonArea = area$1; +exports.polygonCentroid = centroid; +exports.polygonContains = contains; exports.polygonHull = hull; -exports.polygonLength = length$2; +exports.polygonLength = length; exports.precisionFixed = precisionFixed; exports.precisionPrefix = precisionPrefix; exports.precisionRound = precisionRound; exports.quadtree = quadtree; -exports.quantile = threshold; -exports.quantize = quantize; +exports.quantile = quantile$1; +exports.quantileSorted = quantileSorted; +exports.quantize = quantize$1; +exports.quickselect = quickselect; exports.radialArea = areaRadial; exports.radialLine = lineRadial$1; exports.randomBates = bates; -exports.randomExponential = exponential$1; +exports.randomBernoulli = bernoulli; +exports.randomBeta = beta; +exports.randomBinomial = binomial; +exports.randomCauchy = cauchy; +exports.randomExponential = exponential; +exports.randomGamma = gamma; +exports.randomGeometric = geometric; +exports.randomInt = int; exports.randomIrwinHall = irwinHall; +exports.randomLcg = lcg; exports.randomLogNormal = logNormal; +exports.randomLogistic = logistic; exports.randomNormal = normal; +exports.randomPareto = pareto; +exports.randomPoisson = poisson; exports.randomUniform = uniform; +exports.randomWeibull = weibull; exports.range = sequence; +exports.reduce = reduce; +exports.reverse = reverse$1; exports.rgb = rgb; -exports.ribbon = ribbon; +exports.ribbon = ribbon$1; +exports.ribbonArrow = ribbonArrow; +exports.rollup = rollup; +exports.rollups = rollups; exports.scaleBand = band; -exports.scaleDiverging = diverging; +exports.scaleDiverging = diverging$1; exports.scaleDivergingLog = divergingLog; exports.scaleDivergingPow = divergingPow; exports.scaleDivergingSqrt = divergingSqrt; exports.scaleDivergingSymlog = divergingSymlog; -exports.scaleIdentity = identity$7; +exports.scaleIdentity = identity$2; exports.scaleImplicit = implicit; -exports.scaleLinear = linear$2; -exports.scaleLog = log$1; +exports.scaleLinear = linear; +exports.scaleLog = log; exports.scaleOrdinal = ordinal; -exports.scalePoint = point$1; -exports.scalePow = pow$1; +exports.scalePoint = point$4; +exports.scalePow = pow; exports.scaleQuantile = quantile; -exports.scaleQuantize = quantize$1; +exports.scaleQuantize = quantize; +exports.scaleRadial = radial; exports.scaleSequential = sequential; exports.scaleSequentialLog = sequentialLog; exports.scaleSequentialPow = sequentialPow; @@ -18385,73 +19536,77 @@ exports.scaleSequentialSqrt = sequentialSqrt; exports.scaleSequentialSymlog = sequentialSymlog; exports.scaleSqrt = sqrt$1; exports.scaleSymlog = symlog; -exports.scaleThreshold = threshold$1; +exports.scaleThreshold = threshold; exports.scaleTime = time; exports.scaleUtc = utcTime; exports.scan = scan; exports.schemeAccent = Accent; -exports.schemeBlues = scheme$l; -exports.schemeBrBG = scheme; -exports.schemeBuGn = scheme$9; -exports.schemeBuPu = scheme$a; +exports.schemeBlues = scheme$5; +exports.schemeBrBG = scheme$q; +exports.schemeBuGn = scheme$h; +exports.schemeBuPu = scheme$g; exports.schemeCategory10 = category10; exports.schemeDark2 = Dark2; -exports.schemeGnBu = scheme$b; -exports.schemeGreens = scheme$m; -exports.schemeGreys = scheme$n; -exports.schemeOrRd = scheme$c; -exports.schemeOranges = scheme$q; -exports.schemePRGn = scheme$1; +exports.schemeGnBu = scheme$f; +exports.schemeGreens = scheme$4; +exports.schemeGreys = scheme$3; +exports.schemeOrRd = scheme$e; +exports.schemeOranges = scheme; +exports.schemePRGn = scheme$p; exports.schemePaired = Paired; exports.schemePastel1 = Pastel1; exports.schemePastel2 = Pastel2; -exports.schemePiYG = scheme$2; -exports.schemePuBu = scheme$e; +exports.schemePiYG = scheme$o; +exports.schemePuBu = scheme$c; exports.schemePuBuGn = scheme$d; -exports.schemePuOr = scheme$3; -exports.schemePuRd = scheme$f; -exports.schemePurples = scheme$o; -exports.schemeRdBu = scheme$4; -exports.schemeRdGy = scheme$5; -exports.schemeRdPu = scheme$g; -exports.schemeRdYlBu = scheme$6; -exports.schemeRdYlGn = scheme$7; -exports.schemeReds = scheme$p; +exports.schemePuOr = scheme$n; +exports.schemePuRd = scheme$b; +exports.schemePurples = scheme$2; +exports.schemeRdBu = scheme$m; +exports.schemeRdGy = scheme$l; +exports.schemeRdPu = scheme$a; +exports.schemeRdYlBu = scheme$k; +exports.schemeRdYlGn = scheme$j; +exports.schemeReds = scheme$1; exports.schemeSet1 = Set1; exports.schemeSet2 = Set2; exports.schemeSet3 = Set3; -exports.schemeSpectral = scheme$8; +exports.schemeSpectral = scheme$i; exports.schemeTableau10 = Tableau10; -exports.schemeYlGn = scheme$i; -exports.schemeYlGnBu = scheme$h; -exports.schemeYlOrBr = scheme$j; -exports.schemeYlOrRd = scheme$k; +exports.schemeYlGn = scheme$8; +exports.schemeYlGnBu = scheme$9; +exports.schemeYlOrBr = scheme$7; +exports.schemeYlOrRd = scheme$6; exports.select = select; exports.selectAll = selectAll; exports.selection = selection; exports.selector = selector; exports.selectorAll = selectorAll; -exports.set = set$2; -exports.shuffle = shuffle; +exports.shuffle = shuffle$1; +exports.shuffler = shuffler; +exports.some = some; +exports.sort = sort; exports.stack = stack; -exports.stackOffsetDiverging = diverging$1; +exports.stackOffsetDiverging = diverging; exports.stackOffsetExpand = expand; exports.stackOffsetNone = none$1; exports.stackOffsetSilhouette = silhouette; exports.stackOffsetWiggle = wiggle; exports.stackOrderAppearance = appearance; -exports.stackOrderAscending = ascending$3; -exports.stackOrderDescending = descending$2; +exports.stackOrderAscending = ascending; +exports.stackOrderDescending = descending; exports.stackOrderInsideOut = insideOut; -exports.stackOrderNone = none$2; +exports.stackOrderNone = none; exports.stackOrderReverse = reverse; exports.stratify = stratify; exports.style = styleValue; -exports.sum = sum; +exports.subset = subset; +exports.sum = sum$1; +exports.superset = superset; exports.svg = svg; exports.symbol = symbol; -exports.symbolCircle = circle$2; -exports.symbolCross = cross$2; +exports.symbolCircle = circle; +exports.symbolCross = cross; exports.symbolDiamond = diamond; exports.symbolSquare = square; exports.symbolStar = star; @@ -18468,8 +19623,8 @@ exports.tickStep = tickStep; exports.ticks = ticks; exports.timeDay = day; exports.timeDays = days; -exports.timeFormatDefaultLocale = defaultLocale$1; -exports.timeFormatLocale = formatLocale$1; +exports.timeFormatDefaultLocale = defaultLocale; +exports.timeFormatLocale = formatLocale; exports.timeFriday = friday; exports.timeFridays = fridays; exports.timeHour = hour; @@ -18499,22 +19654,20 @@ exports.timeWeek = sunday; exports.timeWeeks = sundays; exports.timeYear = year; exports.timeYears = years; -exports.timeout = timeout$1; +exports.timeout = timeout; exports.timer = timer; exports.timerFlush = timerFlush; -exports.touch = touch; -exports.touches = touches; exports.transition = transition; exports.transpose = transpose; exports.tree = tree; -exports.treemap = index$3; +exports.treemap = index; exports.treemapBinary = binary; exports.treemapDice = treemapDice; exports.treemapResquarify = resquarify; exports.treemapSlice = treemapSlice; exports.treemapSliceDice = sliceDice; exports.treemapSquarify = squarify; -exports.tsv = tsv$1; +exports.tsv = tsv; exports.tsvFormat = tsvFormat; exports.tsvFormatBody = tsvFormatBody; exports.tsvFormatRow = tsvFormatRow; @@ -18522,6 +19675,7 @@ exports.tsvFormatRows = tsvFormatRows; exports.tsvFormatValue = tsvFormatValue; exports.tsvParse = tsvParse; exports.tsvParseRows = tsvParseRows; +exports.union = union; exports.utcDay = utcDay; exports.utcDays = utcDays; exports.utcFriday = utcFriday; @@ -18552,17 +19706,15 @@ exports.utcWeek = utcSunday; exports.utcWeeks = utcSundays; exports.utcYear = utcYear; exports.utcYears = utcYears; -exports.values = values; exports.variance = variance; exports.version = version; -exports.voronoi = voronoi; exports.window = defaultView; exports.xml = xml; exports.zip = zip; 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2:this._point=3,this._context.lineTo((5*this._x0+this._x1)/6,(5*this._y0+this._y1)/6);default:lm(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}},dm.prototype={areaStart:sm,areaEnd:sm,lineStart:function(){this._x0=this._x1=this._x2=this._x3=this._x4=this._y0=this._y1=this._y2=this._y3=this._y4=NaN,this._point=0},lineEnd:function(){switch(this._point){case 1:this._context.moveTo(this._x2,this._y2),this._context.closePath();break;case 2:this._context.moveTo((this._x2+2*this._x3)/3,(this._y2+2*this._y3)/3),this._context.lineTo((this._x3+2*this._x2)/3,(this._y3+2*this._y2)/3),this._context.closePath();break;case 3:this.point(this._x2,this._y2),this.point(this._x3,this._y3),this.point(this._x4,this._y4)}},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._x2=t,this._y2=n;break;case 1:this._point=2,this._x3=t,this._y3=n;break;case 2:this._point=3,this._x4=t,this._y4=n,this._context.moveTo((this._x0+4*this._x1+t)/6,(this._y0+4*this._y1+n)/6);break;default:lm(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}},pm.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._y0=this._y1=NaN,this._point=0},lineEnd:function(){(this._line||0!==this._line&&3===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1;break;case 1:this._point=2;break;case 2:this._point=3;var e=(this._x0+4*this._x1+t)/6,r=(this._y0+4*this._y1+n)/6;this._line?this._context.lineTo(e,r):this._context.moveTo(e,r);break;case 3:this._point=4;default:lm(this,t,n)}this._x0=this._x1,this._x1=t,this._y0=this._y1,this._y1=n}};class gm{constructor(t,n){this._context=t,this._x=n}areaStart(){this._line=0}areaEnd(){this._line=NaN}lineStart(){this._point=0}lineEnd(){(this._line||0!==this._line&&1===this._point)&&this._context.closePath(),this._line=1-this._line}point(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._line?this._context.lineTo(t,n):this._context.moveTo(t,n);break;case 1:this._point=2;default:this._x?this._context.bezierCurveTo(this._x0=(this._x0+t)/2,this._y0,this._x0,n,t,n):this._context.bezierCurveTo(this._x0,this._y0=(this._y0+n)/2,t,this._y0,t,n)}this._x0=t,this._y0=n}}function ym(t,n){this._basis=new hm(t),this._beta=n}ym.prototype={lineStart:function(){this._x=[],this._y=[],this._basis.lineStart()},lineEnd:function(){var t=this._x,n=this._y,e=t.length-1;if(e>0)for(var 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3:_m(this,this._x1,this._y1)}(this._line||0!==this._line&&1===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._line?this._context.lineTo(t,n):this._context.moveTo(t,n);break;case 1:this._point=2,this._x1=t,this._y1=n;break;case 2:this._point=3;default:_m(this,t,n)}this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var mm=function t(n){function e(t){return new bm(t,n)}return e.tension=function(n){return t(+n)},e}(0);function xm(t,n){this._context=t,this._k=(1-n)/6}xm.prototype={areaStart:sm,areaEnd:sm,lineStart:function(){this._x0=this._x1=this._x2=this._x3=this._x4=this._x5=this._y0=this._y1=this._y2=this._y3=this._y4=this._y5=NaN,this._point=0},lineEnd:function(){switch(this._point){case 1:this._context.moveTo(this._x3,this._y3),this._context.closePath();break;case 2:this._context.lineTo(this._x3,this._y3),this._context.closePath();break;case 3:this.point(this._x3,this._y3),this.point(this._x4,this._y4),this.point(this._x5,this._y5)}},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1,this._x3=t,this._y3=n;break;case 1:this._point=2,this._context.moveTo(this._x4=t,this._y4=n);break;case 2:this._point=3,this._x5=t,this._y5=n;break;default:_m(this,t,n)}this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var wm=function t(n){function e(t){return new xm(t,n)}return e.tension=function(n){return t(+n)},e}(0);function Mm(t,n){this._context=t,this._k=(1-n)/6}Mm.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._x2=this._y0=this._y1=this._y2=NaN,this._point=0},lineEnd:function(){(this._line||0!==this._line&&3===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){switch(t=+t,n=+n,this._point){case 0:this._point=1;break;case 1:this._point=2;break;case 2:this._point=3,this._line?this._context.lineTo(this._x2,this._y2):this._context.moveTo(this._x2,this._y2);break;case 3:this._point=4;default:_m(this,t,n)}this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var Am=function t(n){function e(t){return new Mm(t,n)}return e.tension=function(n){return t(+n)},e}(0);function Tm(t,n,e){var r=t._x1,i=t._y1,o=t._x2,a=t._y2;if(t._l01_a>sb){var u=2*t._l01_2a+3*t._l01_a*t._l12_a+t._l12_2a,c=3*t._l01_a*(t._l01_a+t._l12_a);r=(r*u-t._x0*t._l12_2a+t._x2*t._l01_2a)/c,i=(i*u-t._y0*t._l12_2a+t._y2*t._l01_2a)/c}if(t._l23_a>sb){var f=2*t._l23_2a+3*t._l23_a*t._l12_a+t._l12_2a,s=3*t._l23_a*(t._l23_a+t._l12_a);o=(o*f+t._x1*t._l23_2a-n*t._l12_2a)/s,a=(a*f+t._y1*t._l23_2a-e*t._l12_2a)/s}t._context.bezierCurveTo(r,i,o,a,t._x2,t._y2)}function Sm(t,n){this._context=t,this._alpha=n}Sm.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._x2=this._y0=this._y1=this._y2=NaN,this._l01_a=this._l12_a=this._l23_a=this._l01_2a=this._l12_2a=this._l23_2a=this._point=0},lineEnd:function(){switch(this._point){case 2:this._context.lineTo(this._x2,this._y2);break;case 3:this.point(this._x2,this._y2)}(this._line||0!==this._line&&1===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){if(t=+t,n=+n,this._point){var e=this._x2-t,r=this._y2-n;this._l23_a=Math.sqrt(this._l23_2a=Math.pow(e*e+r*r,this._alpha))}switch(this._point){case 0:this._point=1,this._line?this._context.lineTo(t,n):this._context.moveTo(t,n);break;case 1:this._point=2;break;case 2:this._point=3;default:Tm(this,t,n)}this._l01_a=this._l12_a,this._l12_a=this._l23_a,this._l01_2a=this._l12_2a,this._l12_2a=this._l23_2a,this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var Em=function t(n){function e(t){return n?new Sm(t,n):new bm(t,0)}return e.alpha=function(n){return t(+n)},e}(.5);function km(t,n){this._context=t,this._alpha=n}km.prototype={areaStart:sm,areaEnd:sm,lineStart:function(){this._x0=this._x1=this._x2=this._x3=this._x4=this._x5=this._y0=this._y1=this._y2=this._y3=this._y4=this._y5=NaN,this._l01_a=this._l12_a=this._l23_a=this._l01_2a=this._l12_2a=this._l23_2a=this._point=0},lineEnd:function(){switch(this._point){case 1:this._context.moveTo(this._x3,this._y3),this._context.closePath();break;case 2:this._context.lineTo(this._x3,this._y3),this._context.closePath();break;case 3:this.point(this._x3,this._y3),this.point(this._x4,this._y4),this.point(this._x5,this._y5)}},point:function(t,n){if(t=+t,n=+n,this._point){var e=this._x2-t,r=this._y2-n;this._l23_a=Math.sqrt(this._l23_2a=Math.pow(e*e+r*r,this._alpha))}switch(this._point){case 0:this._point=1,this._x3=t,this._y3=n;break;case 1:this._point=2,this._context.moveTo(this._x4=t,this._y4=n);break;case 2:this._point=3,this._x5=t,this._y5=n;break;default:Tm(this,t,n)}this._l01_a=this._l12_a,this._l12_a=this._l23_a,this._l01_2a=this._l12_2a,this._l12_2a=this._l23_2a,this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var Nm=function t(n){function e(t){return n?new km(t,n):new xm(t,0)}return e.alpha=function(n){return t(+n)},e}(.5);function Cm(t,n){this._context=t,this._alpha=n}Cm.prototype={areaStart:function(){this._line=0},areaEnd:function(){this._line=NaN},lineStart:function(){this._x0=this._x1=this._x2=this._y0=this._y1=this._y2=NaN,this._l01_a=this._l12_a=this._l23_a=this._l01_2a=this._l12_2a=this._l23_2a=this._point=0},lineEnd:function(){(this._line||0!==this._line&&3===this._point)&&this._context.closePath(),this._line=1-this._line},point:function(t,n){if(t=+t,n=+n,this._point){var e=this._x2-t,r=this._y2-n;this._l23_a=Math.sqrt(this._l23_2a=Math.pow(e*e+r*r,this._alpha))}switch(this._point){case 0:this._point=1;break;case 1:this._point=2;break;case 2:this._point=3,this._line?this._context.lineTo(this._x2,this._y2):this._context.moveTo(this._x2,this._y2);break;case 3:this._point=4;default:Tm(this,t,n)}this._l01_a=this._l12_a,this._l12_a=this._l23_a,this._l01_2a=this._l12_2a,this._l12_2a=this._l23_2a,this._x0=this._x1,this._x1=this._x2,this._x2=t,this._y0=this._y1,this._y1=this._y2,this._y2=n}};var Pm=function 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