From cbadc7859bbc9b82269ce516d09c0952a2f638e9 Mon Sep 17 00:00:00 2001
From: contra <yo@contra.io>
Date: Tue, 16 Apr 2019 13:26:19 -0400
Subject: [PATCH] 3.7.2 - make simplify actually work

---
 dist/util/geo/simplify.js |  2 +-
 package.json              |  2 +-
 src/util/geo/simplify.js  |  6 ++--
 test/geo/simplify.js      | 61 ++++++++++++++++++++-------------------
 4 files changed, 37 insertions(+), 34 deletions(-)

diff --git a/dist/util/geo/simplify.js b/dist/util/geo/simplify.js
index 16b34d5..350dd39 100644
--- a/dist/util/geo/simplify.js
+++ b/dist/util/geo/simplify.js
@@ -24,7 +24,7 @@ exports.default = (geometry, { tolerance = 0.00001 } = {}) => {
   if (type === 'LineString' && coordinates.length === 2 && (0, _lodash.isEqual)(coordinates[0], coordinates[1])) {
     throw new Error('Invalid LineString! Only two coordinates that are identical.');
   }
-  const res = (0, _turf.simplify)(geometry, { tolerance });
+  const res = (0, _turf.simplify)((0, _turf.cleanCoords)((0, _turf.truncate)(geometry, { precision: 6, coordinates: 3 })), { tolerance });
   return Object.assign({
     type
   }, rest, {
diff --git a/package.json b/package.json
index 853a526..fce8573 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vandelay-util",
-  "version": "3.7.1",
+  "version": "3.7.2",
   "description": "Grab bag of utilities for vandelay transform functions",
   "main": "dist/index.js",
   "keywords": [],
diff --git a/src/util/geo/simplify.js b/src/util/geo/simplify.js
index 6824987..0bea237 100644
--- a/src/util/geo/simplify.js
+++ b/src/util/geo/simplify.js
@@ -1,4 +1,4 @@
-import { simplify } from '@turf/turf'
+import { simplify, truncate, cleanCoords } from '@turf/turf'
 import { isEqual } from 'lodash'
 
 // 1 = 69 miles
@@ -16,7 +16,9 @@ export default (geometry, { tolerance=0.00001 }={}) => {
   if (type === 'LineString' && coordinates.length === 2 && isEqual(coordinates[0], coordinates[1])) {
     throw new Error('Invalid LineString! Only two coordinates that are identical.')
   }
-  const res = simplify(geometry, { tolerance })
+  const res = simplify(
+    cleanCoords(truncate(geometry, { precision: 6, coordinates: 3 }))
+    , { tolerance })
   return {
     type,
     ...rest,
diff --git a/test/geo/simplify.js b/test/geo/simplify.js
index 874484c..0fb8922 100644
--- a/test/geo/simplify.js
+++ b/test/geo/simplify.js
@@ -85,38 +85,39 @@ describe('geo#simplify', () => {
     }
     const expected = {
       type: 'LineString',
-      coordinates: [ [ -79.808996, 36.070662 ],
-        [ -79.80891, 36.070629999999994 ],
-        [ -79.809, 36.070499999999996 ],
-        [ -79.80912000000001, 36.07018 ],
-        [ -79.80922000000001, 36.07003 ],
-        [ -79.80940000000001, 36.06989 ],
-        [ -79.81016000000001, 36.07001 ],
-        [ -79.81026000000001, 36.06989 ],
+      coordinates: [
+        [ -79.808996, 36.070662 ],
+        [ -79.80891, 36.07063 ],
+        [ -79.809, 36.0705 ],
+        [ -79.80912, 36.07018 ],
+        [ -79.80922, 36.07003 ],
+        [ -79.8094, 36.06989 ],
+        [ -79.81016, 36.07001 ],
+        [ -79.81026, 36.06989 ],
         [ -79.8104, 36.06962 ],
         [ -79.81048, 36.06933 ],
-        [ -79.81061, 36.069019999999995 ],
-        [ -79.81062, 36.068889999999996 ],
-        [ -79.81076, 36.06858999999999 ],
-        [ -79.81078000000001, 36.06844999999999 ],
-        [ -79.811, 36.068369999999994 ],
-        [ -79.81137000000001, 36.068389999999994 ],
-        [ -79.81151000000001, 36.06842999999999 ],
-        [ -79.81168000000001, 36.06844999999999 ],
-        [ -79.81184, 36.06844999999999 ],
-        [ -79.81201, 36.06841999999999 ],
-        [ -79.8124, 36.068409999999986 ],
-        [ -79.81239, 36.06853999999999 ],
-        [ -79.81258, 36.067519999999995 ],
-        [ -79.81258, 36.067389999999996 ],
-        [ -79.81264000000002, 36.06692999999999 ],
-        [ -79.81267000000003, 36.066419999999994 ],
-        [ -79.81266000000002, 36.06565999999999 ],
-        [ -79.81269000000002, 36.065519999999985 ],
-        [ -79.81307000000002, 36.06543999999999 ],
-        [ -79.81357000000003, 36.065299999999986 ],
-        [ -79.81380000000003, 36.06527999999999 ],
-        [ -79.81423000000002, 36.06533999999999 ] ]
+        [ -79.81061, 36.06902 ],
+        [ -79.81062, 36.06889 ],
+        [ -79.81076, 36.06859 ],
+        [ -79.81078, 36.06845 ],
+        [ -79.811, 36.06837 ],
+        [ -79.81137, 36.06839 ],
+        [ -79.81151, 36.06843 ],
+        [ -79.81168, 36.06845 ],
+        [ -79.81184, 36.06845 ],
+        [ -79.81201, 36.06842 ],
+        [ -79.8124, 36.06841 ],
+        [ -79.81239, 36.06854 ],
+        [ -79.81258, 36.06752 ],
+        [ -79.81258, 36.06739 ],
+        [ -79.81264, 36.06693 ],
+        [ -79.81267, 36.06642 ],
+        [ -79.81266, 36.06566 ],
+        [ -79.81269, 36.06552 ],
+        [ -79.81307, 36.06544 ],
+        [ -79.81357, 36.0653 ],
+        [ -79.8138, 36.06528 ],
+        [ -79.81423, 36.06534 ] ]
     }
     util.geo.simplify(src).should.eql(expected)
     util.geo.simplify(expected).should.eql(expected)