Docs updated
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Mat Groves
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@ -142,23 +166,30 @@
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<div class="apidocs">
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<div id="docs-main">
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<div class="content">
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<h1 class="file-heading">File: src/pixi/core/Polygon.js</h1>
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<h1 class="file-heading">File: src/pixi/core/Polygon.js</h1>
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<div class="file">
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<pre class="code prettyprint linenums">
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/**
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/**
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* @author Adrien Brault <adrien.brault@gmail.com>
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*/
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*/
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/**
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/**
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* @class Polygon
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* @constructor
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* @param points {Array<Point>|Array<Number>} This cna be an array of Points or a flat array of numbers
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* that will be interpreted as [x,y, x,y, ...]
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*/
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* @param points* {Array<Point>|Array<Number>|Point...|Number...} This can be an array of Points that form the polygon,
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* a flat array of numbers that will be interpreted as [x,y, x,y, ...], or the arguments passed can be
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* all the points of the polygon e.g. `new PIXI.Polygon(new PIXI.Point(), new PIXI.Point(), ...)`, or the
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* arguments passed can be flat x,y values e.g. `new PIXI.Polygon(x,y, x,y, x,y, ...)` where `x` and `y` are
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* Numbers.
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*/
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PIXI.Polygon = function(points)
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{
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//if this is a flat array of numbers, convert it to points
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//if points isn't an array, use arguments as the array
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if(!(points instanceof Array))
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points = Array.prototype.slice.call(arguments);
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//if this is a flat array of numbers, convert it to points
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if(typeof points[0] === 'number') {
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var p = [];
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for(var i = 0, il = points.length; i < il; i+=2) {
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this.points = points;
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}
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/**
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/**
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* Creates a clone of this polygon
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*
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* @method clone
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* @return a copy of the polygon
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*/
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* @return {Polygon} a copy of the polygon
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*/
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PIXI.Polygon.prototype.clone = function()
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{
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var points = [];
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return new PIXI.Polygon(points);
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}
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/**
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/**
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* Checks if the x, and y coords passed to this function are contained within this polygon
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*
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* @method contains
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* @param x {Number} The X coord of the point to test
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* @param y {Number} The Y coord of the point to test
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* @return if the x/y coords are within this polygon
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*/
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* @return {Boolean} if the x/y coords are within this polygon
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*/
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PIXI.Polygon.prototype.contains = function(x, y)
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{
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var inside = false;
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// use some raycasting to test hits
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// https://github.com/substack/point-in-polygon/blob/master/index.js
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// use some raycasting to test hits
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// https://github.com/substack/point-in-polygon/blob/master/index.js
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for(var i = 0, j = this.points.length - 1; i < this.points.length; j = i++) {
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var xi = this.points[i].x, yi = this.points[i].y,
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xj = this.points[j].x, yj = this.points[j].y,
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intersect = ((yi > y) != (yj > y)) && (x < (xj - xi) * (y - yi) / (yj - yi) + xi);
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intersect = ((yi > y) != (yj > y)) && (x < (xj - xi) * (y - yi) / (yj - yi) + xi);
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if(intersect) inside = !inside;
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}
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@ -210,8 +245,8 @@ PIXI.Polygon.prototype.contains = function(x, y)
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return inside;
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}
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PIXI.Polygon.constructor = PIXI.Polygon;
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// constructor
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PIXI.Polygon.prototype.constructor = PIXI.Polygon;
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</pre>
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</div>
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@ -222,13 +257,13 @@ PIXI.Polygon.constructor = PIXI.Polygon;
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</div>
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</div>
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</div>
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