349 lines
11 KiB
HTML
349 lines
11 KiB
HTML
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<title>src/pixi/primitives/Graphics.js - Pixi.JS</title>
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<h1 class="file-heading">File: src/pixi/primitives/Graphics.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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* @author Mat Groves http://matgroves.com/ @Doormat23
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*/
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/**
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* The Graphics class contains a set of methods that you can use to create primitive shapes and lines.
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* It is important to know that with the webGL renderer only simple polys can be filled at this stage
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* Complex polys will not be filled. Heres an example of a complex poly: http://www.goodboydigital.com/wp-content/uploads/2013/06/complexPolygon.png
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* @class Graphics
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* @extends DisplayObjectContainer
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* @constructor
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*/
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PIXI.Graphics = function()
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{
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PIXI.DisplayObjectContainer.call( this );
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this.renderable = true;
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this.fillAlpha = 1;
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this.lineWidth = 2;
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this.lineColor = "#FF0000";
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this.graphicsData = [];
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this.currentPath = {points:[]};
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}
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// constructor
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PIXI.Graphics.constructor = PIXI.Graphics;
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PIXI.Graphics.prototype = Object.create( PIXI.DisplayObjectContainer.prototype );
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/**
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* Specifies a line style used for subsequent calls to Graphics methods such as the lineTo() method or the drawCircle() method.
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* @method lineStyle
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* @param lineWidth {Number}
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* @param color {Number}
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* @param alpha {Number}
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*/
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PIXI.Graphics.prototype.lineStyle = function(lineWidth, color, alpha)
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{
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if(this.currentPath.points.length == 0)this.graphicsData.pop();
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this.lineWidth = lineWidth || 0;
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this.lineColor = color || 0;
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this.lineAlpha = (alpha == undefined) ? 1 : alpha;
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this.currentPath = {lineWidth:this.lineWidth, lineColor:this.lineColor, lineAlpha:this.lineAlpha,
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fillColor:this.fillColor, fillAlpha:this.fillAlpha, fill:this.filling, points:[], type:PIXI.Graphics.POLY};
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this.graphicsData.push(this.currentPath);
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}
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/**
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* Moves the current drawing position to (x, y).
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* @method moveTo
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* @param x {Number}
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* @param y {Number}
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*/
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PIXI.Graphics.prototype.moveTo = function(x, y)
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{
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if(this.currentPath.points.length == 0)this.graphicsData.pop();
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this.currentPath = this.currentPath = {lineWidth:this.lineWidth, lineColor:this.lineColor, lineAlpha:this.lineAlpha,
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fillColor:this.fillColor, fillAlpha:this.fillAlpha, fill:this.filling, points:[], type:PIXI.Graphics.POLY};
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this.currentPath.points.push(x, y);
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this.graphicsData.push(this.currentPath);
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}
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/**
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* Draws a line using the current line style from the current drawing position to (x, y); the current drawing position is then set to (x, y).
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* @method lineTo
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* @param x {Number}
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* @param y {Number}
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*/
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PIXI.Graphics.prototype.lineTo = function(x, y)
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{
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this.currentPath.points.push(x, y);
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this.dirty = true;
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}
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/**
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* Specifies a simple one-color fill that subsequent calls to other Graphics methods (such as lineTo() or drawCircle()) use when drawing.
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* @method beginFill
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* @param color {uint} the color of the fill
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* @param alpha {Number} the alpha
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*/
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PIXI.Graphics.prototype.beginFill = function(color, alpha)
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{
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this.filling = true;
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this.fillColor = color || 0;
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this.fillAlpha = alpha || 1;
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}
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/**
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* Applies a fill to the lines and shapes that were added since the last call to the beginFill() method.
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* @method endFill
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*/
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PIXI.Graphics.prototype.endFill = function()
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{
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this.filling = false;
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this.fillColor = null;
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this.fillAlpha = 1;
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}
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/**
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* @method drawRect
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* @param x {Number}
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* @param y {Number}
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* @param width {Number}
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* @param height {Number}
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*/
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PIXI.Graphics.prototype.drawRect = function( x, y, width, height )
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{
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if(this.currentPath.points.length == 0)this.graphicsData.pop();
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this.currentPath = {lineWidth:this.lineWidth, lineColor:this.lineColor, lineAlpha:this.lineAlpha,
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fillColor:this.fillColor, fillAlpha:this.fillAlpha, fill:this.filling,
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points:[x, y, width, height], type:PIXI.Graphics.RECT};
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this.graphicsData.push(this.currentPath);
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this.dirty = true;
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}
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/**
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* Draws a circle.
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* @method drawCircle
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* @param x {Number}
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* @param y {Number}
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* @param radius {Number}
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*/
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PIXI.Graphics.prototype.drawCircle = function( x, y, radius)
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{
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if(this.currentPath.points.length == 0)this.graphicsData.pop();
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this.currentPath = {lineWidth:this.lineWidth, lineColor:this.lineColor, lineAlpha:this.lineAlpha,
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fillColor:this.fillColor, fillAlpha:this.fillAlpha, fill:this.filling,
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points:[x, y, radius, radius], type:PIXI.Graphics.CIRC};
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this.graphicsData.push(this.currentPath);
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this.dirty = true;
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}
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/**
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* Draws an elipse.
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* @method drawElipse
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* @param x {Number}
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* @param y {Number}
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* @param width {Number}
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* @param height {Number}
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*/
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PIXI.Graphics.prototype.drawElipse = function( x, y, width, height)
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{
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if(this.currentPath.points.length == 0)this.graphicsData.pop();
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this.currentPath = {lineWidth:this.lineWidth, lineColor:this.lineColor, lineAlpha:this.lineAlpha,
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fillColor:this.fillColor, fillAlpha:this.fillAlpha, fill:this.filling,
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points:[x, y, width, height], type:PIXI.Graphics.ELIP};
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this.graphicsData.push(this.currentPath);
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this.dirty = true;
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}
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/**
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* Clears the graphics that were drawn to this Graphics object, and resets fill and line style settings.
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* @method clear
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*/
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PIXI.Graphics.prototype.clear = function()
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{
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this.lineWidth = 0;
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this.filling = false;
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this.dirty = true;
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this.clearDirty = true;
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this.graphicsData = [];
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}
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// SOME TYPES:
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PIXI.Graphics.POLY = 0;
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PIXI.Graphics.RECT = 1;
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PIXI.Graphics.CIRC = 2;
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PIXI.Graphics.ELIP = 3;
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</pre>
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