🎉 Initial commit

.gitignore

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+
+*.json

LICENSE.MD

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+MIT License
+
+Copyright (c) 2017 Ezekiel
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# PointerGeometry3000
+A simple little utility that makes it easy to work with values calculated from the pointer's location relative to one or multiple defined points. 🙋🏼
+
+[🍒 VISIT THE PROJECT (MINI DEMO) WEBSITE](http://ezekielaquino.com/PointerGeometry3000)
+
+# Why?
+I experiment a lot with interactive graphics and interaction in general, and have found that I often have to calculate `this` and `that`, particularly the distance and angle from (a) specific point(s). I decided to make this little utility so I can just plop it in and start trying things out.
+
+While the output is very 'basic', I found that what can be done with them when used to manipulate `things` are endless. I hope you find this stirring your creativity and imagination. Lots of possibilities!
+
+[💅🏾 THE PROJECT SITE IS A MINI DEMO](http://ezekielaquino.com/PointerGeometry3000)
+
+*More demos coming soon (mocking 3d, AppleTV rotating cards, etc)*
+
+
+# How?
+Simply call PointerGeometry3000. This will create a global variable `PointerGeometry` which contains `points`. Values are updated onMouseMove by default (see available settings below).
+
+```js
+  // Initialize
+  PointerGeometry();
+```
+
+If initialised without arguments it will simply register the center of the viewport as its one and only reference point. The default name of this auto-created point is `pointA`. If you do a `console.log(PointerGeometry('pointA')` after initialisation, you will find that a point object contains the following data:
+
+```js
+  // Sample data
+  pointA: {
+    cx: 640, // (centerX, reference)
+    cy: 333, // (centerY, reference)
+    deg: 43.42633594589745, // (degrees),
+    hyp: 426.8480408763756 // (distance from reference)
+    rad: 0.7579325443330766, // (radians)
+    x: 187 // (positionX),
+    y: 177 // (positionY)
+  }
+```
+
+But you probably want to define specific points of reference, have multiple and even name them for convenience, so you'd want to initialize it like so:
+
+```js
+  // We initialize with multiple points
+  PointerGeometry({
+    points: {
+      aNicelyNamedPoint: {
+        cx: 200, // coordinate in pixels relative to viewport
+        cy: 200
+      },
+      anotherPoint: {
+        cx: 'center', // you can just pass 'center' for center of viewport
+        cy: 'center' // you can just pass 'center' for center of viewport
+      },
+      goCrazy: {
+        cx: 450
+        cy: 620
+      }
+    },
+    initialPos: { pageX: 200, pageY: 200 }, // (optional) registered 'mouse position' immediately on init. defaults to center
+    listener: 'mousemove', // (optional, default: mousemove) event to listen to when updating values
+    console: true // (optional) set to true if you want a console with values to be shown
+  });
+```
+
+So how do you get a specific point's particular value? You just do: `PointerGeometry(pointName).propertyKey`
+
+```js
+  // Get a specific point's value
+  var distanceFromReference = PointerGeometry('aNicelyNamedPoint').hyp;
+  var angleInDegrees = PointerGeometry('aNicelyNamedPoint').deg;
+  // ... so on
+```
+
+You can also access `all` points via `PointerGeometry.points`.
+
+
+# Notes
+
+- If manipulating DOM elements, it is still best to use transforms as they are way more performant than manipulating e.g. width and height.
+- Having `console: true` or having inspector open (as you already know) will reduce performance as it will be updating values, recording timelines, highlighting updated DOM elements what have you.
+
+
+# Plans
+
+- More values e.g. adjacent, opposite and corresponding angles
+- point relative to a parent element
+- any suggestions?
+
+# Say Hi!
+
+Please do. If you have any comments or suggestions, i'd love to hear them. This utility is completely free but if you have used it for something cool please do let me know, let me see what you've made! Drop me a line at [email protected] or via @the_ezekiel on Twitter!
+
+P.S. Follow me on twitter!
+
+# License
+
+This project is licensed under the MIT License - see the LICENSE.md file for details

pointergeometry.js

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+/**
+ * POINTERGEOMETRY3000
+ * http://github.com/ezekielaquino/pointergeometry3000
+ * JS Utility to get all sorts of pointer properties
+ * MIT License
+ */
+
+'use strict';
+
+(function() {
+  let keys, propsKeys, points, isConsole, propElems, initialPos, listener;
+
+  const defaults = {
+    points: {
+      pointA: {
+        cx: window.innerWidth / 2,
+        cy: window.innerHeight / 2
+      }
+    }
+  };
+
+
+
+  window.PointerGeometry = function(arg) {
+    // If passed a string, we return the
+    // object containing the named point
+    if (typeof arg === 'string' || Number.isInteger(arg)) {
+      return window.PointerGeometry.points[arg];
+    } else {
+      // If passed an object, then we initialise
+      // the plugin and register the points
+      arg = arg || defaults;
+      keys = Object.keys(arg.points);
+      points = arg.points || {};
+      isConsole = arg.console;
+      initialPos = arg.initialPos || { pageX: window.innerWidth / 2, pageY: window.innerHeight / 2 };
+      listener = arg.listener || 'mousemove';
+
+      // initial register, before initial mousemove
+      // so we populate the values for the console
+      if (isConsole) {
+        register();
+        initializeConsole(keys);
+      }
+
+      // register with initial position
+      register(initialPos);
+
+      // Listen to mousemove within the viewport
+      window.addEventListener(listener, function(event) {
+        register(event);
+      });
+    }
+  };
+
+
+
+  function register(event) {
+    event = event || {};
+
+    for (let i = 0; i < keys.length; i++) {
+      const key = keys[i];
+      let point;
+
+      let cx = (points[key].cx == 'center' || !points[key].cx) ? defaults.points['pointA'].cx : points[key].cx;
+      let cy = (points[key].cy == 'center' || !points[key].cy) ? defaults.points['pointA'].cy : points[key].cy;
+      let x = (event.pageX || 0) - cx;
+      let y = (event.pageY || 0) - cy;
+      let rad = Math.atan2(y, x);
+      let deg = rad * (180 / Math.PI);
+      let hyp = Math.hypot(x, y);
+
+      point = {
+        cx: cx,
+        cy: cy,
+        x: x,
+        y: y,
+        rad: rad,
+        deg: deg,
+        hyp: hyp
+      };
+
+      propsKeys = Object.keys(point);
+      points[key] = point;
+
+      updateConsole(point, i);
+    }
+
+    window.PointerGeometry.points = points;
+  }
+
+
+
+  function initializeConsole(keys) {
+    if (isConsole) {
+      const container = document.createElement('div');
+
+      // Create the parent container
+      if (!document.querySelector('.js-pgProps')) {
+        container.classList.add('js-pgProps');
+        container.style.position = 'fixed';
+        container.style.background = 'rgba(0, 0, 0, 0.7)';
+        container.style.color = 'white';
+        container.style.fontSize = '9px';
+        container.style.fontFamily = 'Arial';
+        container.style.width = 140 + 'px';
+        container.style.top = 0;
+        container.style.right = 0;
+
+        document.body.appendChild(container);
+      }
+
+      // Create each point's container
+      if (document.querySelectorAll('.js-pgPoint').length < keys.length) {
+        for (var i = 0; i < keys.length; i++) {
+          // Initialize console
+          const key = keys[i];
+          const propKeys = Object.keys(window.PointerGeometry.points[key]);
+          const pointInfo = document.createElement('div');
+          const pointLabel = document.createElement('label');
+
+          pointInfo.classList.add('js-pgPoint');
+
+          pointLabel.innerHTML = key;
+          pointLabel.style.padding = '2px 5px';
+
+          pointInfo.appendChild(pointLabel);
+
+          for (let n = 0; n < propKeys.length; n++) {
+            const prop = document.createElement('div');
+            const propKey = propKeys[n];
+
+            prop.classList.add('js-pgProp');
+            prop.style.padding = '2px 5px 2px 15px';
+
+            prop.innerHTML = propKey + ':' + window.PointerGeometry.points[propKey];
+            pointInfo.appendChild(prop);
+          }
+
+          container.appendChild(pointInfo);
+        }
+      }
+
+      propElems = document.querySelectorAll('.js-pgProp');
+    }
+  }
+
+
+
+  function updateConsole(point, index) {
+    if (propElems) {
+      for (var j = 0; j < propsKeys.length; j++) {
+        const i = (index * propsKeys.length) + j;
+        const elem = propElems[i];
+        const key = propsKeys[j];
+        const value = point[key];
+
+        elem.innerHTML = key + ':' + value;
+      }
+    }
+  }
+
+
+
+
+
+})();