262 lines
9.2 KiB
HTML
262 lines
9.2 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<title>src/pixi/loaders/SpriteSheetLoader.js - Pixi.JS</title>
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<em>API Docs for: 1.3.0</em>
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<li><a href="../classes/AssetLoader.html">AssetLoader</a></li>
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<li><a href="../classes/BaseTexture.html">BaseTexture</a></li>
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<li><a href="../classes/BitmapFontLoader.html">BitmapFontLoader</a></li>
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<li><a href="../classes/BitmapText.html">BitmapText</a></li>
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<li><a href="../classes/CanvasGraphics.html">CanvasGraphics</a></li>
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<li><a href="../classes/CanvasRenderer.html">CanvasRenderer</a></li>
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<li><a href="../classes/Circle.html">Circle</a></li>
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<li><a href="../classes/Graphics.html">Graphics</a></li>
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<li><a href="../classes/ImageLoader.html">ImageLoader</a></li>
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<li><a href="../classes/InteractionData.html">InteractionData</a></li>
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<li><a href="../classes/InteractionManager.html">InteractionManager</a></li>
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<li><a href="../classes/JsonLoader.html">JsonLoader</a></li>
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<li><a href="../classes/MovieClip.html">MovieClip</a></li>
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<li><a href="../classes/Sprite.html">Sprite</a></li>
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<li><a href="../classes/SpriteSheetLoader.html">SpriteSheetLoader</a></li>
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<li><a href="../classes/Texture.html">Texture</a></li>
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<li><a href="../classes/TilingSprite.html">TilingSprite</a></li>
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<div class="content">
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<h1 class="file-heading">File: src/pixi/loaders/SpriteSheetLoader.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 sprite sheet loader is used to load in JSON sprite sheet data
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* To generate the data you can use http://www.codeandweb.com/texturepacker and publish the "JSON" format
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* There is a free version so thats nice, although the paid version is great value for money.
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* It is highly recommended to use Sprite sheets (also know as texture atlas") as it means sprite"s can be batched and drawn together for highly increased rendering speed.
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* Once the data has been loaded the frames are stored in the PIXI texture cache and can be accessed though PIXI.Texture.fromFrameId() and PIXI.Sprite.fromFromeId()
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* This loader will also load the image file that the Spritesheet points to as well as the data.
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* When loaded this class will dispatch a "loaded" event
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* @class SpriteSheetLoader
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* @extends EventTarget
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* @constructor
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* @param {String} url the url of the sprite sheet JSON file
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* @param {Boolean} crossorigin
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*/
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PIXI.SpriteSheetLoader = function (url, crossorigin) {
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/*
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* i use texture packer to load the assets..
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* http://www.codeandweb.com/texturepacker
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* make sure to set the format as "JSON"
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*/
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PIXI.EventTarget.call(this);
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this.url = url;
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this.baseUrl = url.replace(/[^\/]*$/, "");
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this.texture = null;
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this.frames = {};
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this.crossorigin = crossorigin;
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};
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// constructor
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PIXI.SpriteSheetLoader.constructor = PIXI.SpriteSheetLoader;
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/**
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* This will begin loading the JSON file
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*/
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PIXI.SpriteSheetLoader.prototype.load = function () {
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var scope = this;
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var jsonLoader = new PIXI.JsonLoader(this.url, this.crossorigin);
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jsonLoader.addEventListener("loaded", function (event) {
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scope.json = event.content.json;
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scope.onJSONLoaded();
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});
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jsonLoader.load();
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};
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/**
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* Invoke when JSON file is loaded
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* @private
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*/
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PIXI.SpriteSheetLoader.prototype.onJSONLoaded = function () {
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var scope = this;
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var textureUrl = this.baseUrl + this.json.meta.image;
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var image = new PIXI.ImageLoader(textureUrl, this.crossorigin);
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var frameData = this.json.frames;
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this.texture = image.texture.baseTexture;
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image.addEventListener("loaded", function (event) {
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scope.onLoaded();
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});
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for (var i in frameData) {
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var rect = frameData[i].frame;
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if (rect) {
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PIXI.TextureCache[i] = new PIXI.Texture(this.texture, {
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x: rect.x,
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y: rect.y,
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width: rect.w,
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height: rect.h
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});
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if (frameData[i].trimmed) {
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//var realSize = frameData[i].spriteSourceSize;
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PIXI.TextureCache[i].realSize = frameData[i].spriteSourceSize;
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PIXI.TextureCache[i].trim.x = 0; // (realSize.x / rect.w)
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// calculate the offset!
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}
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}
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}
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image.load();
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};
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/**
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* Invoke when all files are loaded (json and texture)
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* @private
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*/
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PIXI.SpriteSheetLoader.prototype.onLoaded = function () {
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this.dispatchEvent({
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type: "loaded",
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content: this
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});
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};
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</pre>
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</div>
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