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< h1 class = "page-title" > Source: gameobjects/BitmapData.js< / h1 >
< section >
< article >
< pre class = "sunlight-highlight-javascript linenums" > /**
* @author Richard Davey < rich@photonstorm.com>
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* @copyright 2014 Photon Storm Ltd.
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* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* Creates a new BitmapData object.
*
* @class Phaser.BitmapData
*
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* @classdesc A BitmapData object contains a Canvas element to which you can draw anything you like via normal Canvas context operations.
* A single BitmapData can be used as the texture one or many Images/Sprites. So if you need to dynamically create a Sprite texture then they are a good choice.
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*
* @constructor
* @param {Phaser.Game} game - A reference to the currently running game.
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* @param {string} key - Internal Phaser reference key for the render texture.
* @param {number} [width=100] - The width of the BitmapData in pixels.
* @param {number} [height=100] - The height of the BitmapData in pixels.
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*/
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Phaser.BitmapData = function (game, key, width, height) {
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if (typeof width === 'undefined') { width = 100; }
if (typeof height === 'undefined') { height = 100; }
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/**
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* @property {Phaser.Game} game - A reference to the currently running game.
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*/
this.game = game;
/**
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* @property {string} key - The key of the BitmapData in the Cache, if stored there.
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*/
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this.key = key;
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/**
* @property {number} width - The width of the BitmapData in pixels.
*/
this.width = width;
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/**
* @property {number} height - The height of the BitmapData in pixels.
*/
this.height = height;
/**
* @property {HTMLCanvasElement} canvas - The canvas to which this BitmapData draws.
* @default
*/
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this.canvas = Phaser.Canvas.create(width, height, '', true);
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/**
* @property {CanvasRenderingContext2D} context - The 2d context of the canvas.
* @default
*/
this.context = this.canvas.getContext('2d');
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/**
* @property {CanvasRenderingContext2D} ctx - A reference to BitmapData.context.
*/
this.ctx = this.context;
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/**
* @property {array} imageData - The canvas image data.
*/
this.imageData = this.context.getImageData(0, 0, width, height);
/**
* @property {UInt8Clamped} pixels - A reference to the context imageData buffer.
*/
if (this.imageData.data.buffer)
{
this.pixels = this.imageData.data.buffer;
}
else
{
this.pixels = this.imageData.data;
}
/**
* @property {PIXI.BaseTexture} baseTexture - The PIXI.BaseTexture.
* @default
*/
this.baseTexture = new PIXI.BaseTexture(this.canvas);
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/**
* @property {PIXI.Texture} texture - The PIXI.Texture.
* @default
*/
this.texture = new PIXI.Texture(this.baseTexture);
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/**
* @property {Phaser.Frame} textureFrame - The Frame this BitmapData uses for rendering.
* @default
*/
this.textureFrame = new Phaser.Frame(0, 0, 0, width, height, 'bitmapData', game.rnd.uuid());
/**
* @property {number} type - The const type of this object.
* @default
*/
this.type = Phaser.BITMAPDATA;
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/**
* @property {boolean} dirty - If dirty this BitmapData will be re-rendered.
*/
this.dirty = false;
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};
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Phaser.BitmapData.prototype = {
/**
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* Updates the given objects so that they use this BitmapData as their texture. This will replace any texture they will currently have set.
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*
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* @method Phaser.BitmapData#add
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* @param {Phaser.Sprite|Phaser.Sprite[]|Phaser.Image|Phaser.Image[]} object - Either a single Sprite/Image or an Array of Sprites/Images.
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*/
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add: function (object) {
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if (Array.isArray(object))
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{
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for (var i = 0; i < object.length; i++)
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{
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if (object[i]['loadTexture'])
{
object[i].loadTexture(this);
}
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}
}
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else
{
object.loadTexture(this);
}
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},
/**
* Clears the BitmapData.
* @method Phaser.BitmapData#clear
*/
clear: function () {
this.context.clearRect(0, 0, this.width, this.height);
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this.dirty = true;
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},
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/**
* Resizes the BitmapData.
* @method Phaser.BitmapData#resize
*/
resize: function (width, height) {
if (width !== this.width || height !== this.height)
{
this.width = width;
this.height = height;
this.canvas.width = width;
this.canvas.height = height;
this.textureFrame.width = width;
this.textureFrame.height = height;
this.imageData = this.context.getImageData(0, 0, width, height);
}
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this.dirty = true;
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},
/**
* @method Phaser.BitmapData#refreshBuffer
*/
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refreshBuffer: function () {
this.imageData = this.context.getImageData(0, 0, this.width, this.height);
this.pixels = new Int32Array(this.imageData.data.buffer);
// this.data8 = new Uint8ClampedArray(this.imageData.buffer);
// this.data32 = new Uint32Array(this.imageData.buffer);
},
/**
* Sets the color of the given pixel to the specified red, green, blue and alpha values.
* @method Phaser.BitmapData#setPixel32
* @param {number} x - The X coordinate of the pixel to be set.
* @param {number} y - The Y coordinate of the pixel to be set.
* @param {number} red - The red color value, between 0 and 0xFF (255).
* @param {number} green - The green color value, between 0 and 0xFF (255).
* @param {number} blue - The blue color value, between 0 and 0xFF (255).
* @param {number} alpha - The alpha color value, between 0 and 0xFF (255).
*/
setPixel32: function (x, y, red, green, blue, alpha) {
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if (x >= 0 & & x < = this.width & & y >= 0 & & y < = this.height)
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{
this.pixels[y * this.width + x] = (alpha < < 24) | (blue < < 16) | (green < < 8) | red;
/*
if (this.isLittleEndian)
{
this.data32[y * this.width + x] = (alpha < < 24) | (blue < < 16) | (green < < 8) | red;
}
else
{
this.data32[y * this.width + x] = (red < < 24) | (green < < 16) | (blue < < 8) | alpha;
}
*/
// this.imageData.data.set(this.data8);
this.context.putImageData(this.imageData, 0, 0);
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this.dirty = true;
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}
},
/**
* Sets the color of the given pixel to the specified red, green and blue values.
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*
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* @method Phaser.BitmapData#setPixel
* @param {number} x - The X coordinate of the pixel to be set.
* @param {number} y - The Y coordinate of the pixel to be set.
* @param {number} red - The red color value (between 0 and 255)
* @param {number} green - The green color value (between 0 and 255)
* @param {number} blue - The blue color value (between 0 and 255)
*/
setPixel: function (x, y, red, green, blue) {
this.setPixel32(x, y, red, green, blue, 255);
},
/**
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* Get the color of a specific pixel.
*
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* @param {number} x - The X coordinate of the pixel to get.
* @param {number} y - The Y coordinate of the pixel to get.
* @return {number} A native color value integer (format: 0xRRGGBB)
*/
getPixel: function (x, y) {
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if (x >= 0 & & x < = this.width & & y >= 0 & & y < = this.height)
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{
return this.data32[y * this.width + x];
}
},
/**
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* Get the color of a specific pixel including its alpha value.
*
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* @param {number} x - The X coordinate of the pixel to get.
* @param {number} y - The Y coordinate of the pixel to get.
* @return {number} A native color value integer (format: 0xAARRGGBB)
*/
getPixel32: function (x, y) {
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if (x >= 0 & & x < = this.width & & y >= 0 & & y < = this.height)
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{
return this.data32[y * this.width + x];
}
},
/**
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* Gets all the pixels from the region specified by the given Rectangle object.
*
* @param {Phaser.Rectangle} rect - The Rectangle region to get.
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* @return {array} CanvasPixelArray.
*/
getPixels: function (rect) {
return this.context.getImageData(rect.x, rect.y, rect.width, rect.height);
},
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/**
* Copies the pixels from the source image to this BitmapData based on the given area and destination.
*
* @param {HTMLImage|string} source - The Image to draw. If you give a key it will try and find the Image in the Game.Cache.
* @param {Phaser.Rectangle} area - The Rectangle region to copy from the source image.
* @param {number} destX - The destination x coordinate to copy the image to.
* @param {number} destY - The destination y coordinate to copy the image to.
*/
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copyPixels: function (source, area, destX, destY) {
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if (typeof source === 'string')
{
source = this.game.cache.getImage(source);
}
if (source)
{
this.context.drawImage(source, area.x, area.y, area.width, area.height, destX, destY, area.width, area.height);
}
},
/**
* Draws the given image to this BitmapData at the coordinates specified. If you need to only draw a part of the image use BitmapData.copyPixels instead.
*
* @param {HTMLImage|string} source - The Image to draw. If you give a key it will try and find the Image in the Game.Cache.
* @param {number} destX - The destination x coordinate to draw the image to.
* @param {number} destY - The destination y coordinate to draw the image to.
*/
draw: function (source, destX, destY) {
if (typeof source === 'string')
{
source = this.game.cache.getImage(source);
}
if (source)
{
this.context.drawImage(source, 0, 0, source.width, source.height, destX, destY, source.width, source.height);
}
},
/**
* Draws the given image onto this BitmapData using an image as an alpha mask.
*
* @param {HTMLImage|string} source - The Image to draw. If you give a key it will try and find the Image in the Game.Cache.
* @param {HTMLImage|string} mask - The Image to use as the alpha mask. If you give a key it will try and find the Image in the Game.Cache.
*/
alphaMask: function (source, mask) {
var temp = this.context.globalCompositeOperation;
if (typeof mask === 'string')
{
mask = this.game.cache.getImage(mask);
}
if (mask)
{
this.context.drawImage(mask, 0, 0);
}
this.context.globalCompositeOperation = 'source-atop';
if (typeof source === 'string')
{
source = this.game.cache.getImage(source);
}
if (source)
{
this.context.drawImage(source, 0, 0);
}
this.context.globalCompositeOperation = temp;
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},
/**
* If the game is running in WebGL this will push the texture up to the GPU if it's dirty.
* This is called automatically if the BitmapData is being used by a Sprite, otherwise you need to remember to call it in your render function.
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*
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* @method Phaser.BitmapData#render
*/
render: function () {
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if (this.game.renderType === Phaser.WEBGL & & this.dirty)
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{
// Only needed if running in WebGL, otherwise this array will never get cleared down
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// should use the rendersession
PIXI.updateWebGLTexture(this.baseTexture, this.game.renderer.gl);
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this.dirty = false;
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}
}
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};
Phaser.BitmapData.prototype.constructor = Phaser.BitmapData;
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< span class = "copyright" >
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Phaser Copyright © 2012-2014 Photon Storm Ltd.
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< br / >
< span class = "jsdoc-message" >
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Documentation generated by < a href = "https://github.com/jsdoc3/jsdoc" > JSDoc 3.3.0-alpha4< / a >
on Fri Apr 11 2014 00:12:13 GMT+0200 (CEST) using the < a href = "https://github.com/terryweiss/docstrap" > DocStrap template< / a > .
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