forked from pixijs/pixijs
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathsrc_pixi_textures_Texture.js.html
571 lines (433 loc) · 17.1 KB
/
src_pixi_textures_Texture.js.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>src/pixi/textures/Texture.js - pixi.js</title>
<link rel="stylesheet" href="http://yui.yahooapis.com/3.9.1/build/cssgrids/cssgrids-min.css">
<link rel="stylesheet" href="../assets/vendor/prettify/prettify-min.css">
<link rel="stylesheet" href="../assets/css/main.css" id="site_styles">
<link rel="shortcut icon" type="image/png" href="../assets/favicon.png">
<script src="http://yui.yahooapis.com/combo?3.9.1/build/yui/yui-min.js"></script>
</head>
<body class="yui3-skin-sam">
<div id="doc">
<div id="hd" class="yui3-g header">
<div class="yui3-u-3-4">
<h1><img src="http://www.goodboydigital.com/pixijs/logo_small.png" title="pixi.js"></h1>
</div>
<div class="yui3-u-1-4 version">
<em>API Docs for: 1.6.0</em>
</div>
</div>
<div id="bd" class="yui3-g">
<div class="yui3-u-1-4">
<div id="docs-sidebar" class="sidebar apidocs">
<div id="api-list">
<h2 class="off-left">APIs</h2>
<div id="api-tabview" class="tabview">
<ul class="tabs">
<li><a href="#api-classes">Classes</a></li>
<li><a href="#api-modules">Modules</a></li>
</ul>
<div id="api-tabview-filter">
<input type="search" id="api-filter" placeholder="Type to filter APIs">
</div>
<div id="api-tabview-panel">
<ul id="api-classes" class="apis classes">
<li><a href="../classes/AbstractFilter.html">AbstractFilter</a></li>
<li><a href="../classes/AjaxRequest.html">AjaxRequest</a></li>
<li><a href="../classes/AlphaMaskFilter.html">AlphaMaskFilter</a></li>
<li><a href="../classes/AssetLoader.html">AssetLoader</a></li>
<li><a href="../classes/AtlasLoader.html">AtlasLoader</a></li>
<li><a href="../classes/autoDetectRenderer.html">autoDetectRenderer</a></li>
<li><a href="../classes/BaseTexture.html">BaseTexture</a></li>
<li><a href="../classes/BitmapFontLoader.html">BitmapFontLoader</a></li>
<li><a href="../classes/BitmapText.html">BitmapText</a></li>
<li><a href="../classes/BlurFilter.html">BlurFilter</a></li>
<li><a href="../classes/CanvasGraphics.html">CanvasGraphics</a></li>
<li><a href="../classes/CanvasMaskManager.html">CanvasMaskManager</a></li>
<li><a href="../classes/CanvasRenderer.html">CanvasRenderer</a></li>
<li><a href="../classes/CanvasTinter.html">CanvasTinter</a></li>
<li><a href="../classes/Circle.html">Circle</a></li>
<li><a href="../classes/ColorMatrixFilter.html">ColorMatrixFilter</a></li>
<li><a href="../classes/ColorStepFilter.html">ColorStepFilter</a></li>
<li><a href="../classes/ComplexPrimitiveShader.html">ComplexPrimitiveShader</a></li>
<li><a href="../classes/DisplacementFilter.html">DisplacementFilter</a></li>
<li><a href="../classes/DisplayObject.html">DisplayObject</a></li>
<li><a href="../classes/DisplayObjectContainer.html">DisplayObjectContainer</a></li>
<li><a href="../classes/DotScreenFilter.html">DotScreenFilter</a></li>
<li><a href="../classes/Ellipse.html">Ellipse</a></li>
<li><a href="../classes/EventTarget.html">EventTarget</a></li>
<li><a href="../classes/FilterTexture.html">FilterTexture</a></li>
<li><a href="../classes/getRecommendedRenderer.html">getRecommendedRenderer</a></li>
<li><a href="../classes/Graphics.html">Graphics</a></li>
<li><a href="../classes/GrayFilter.html">GrayFilter</a></li>
<li><a href="../classes/ImageLoader.html">ImageLoader</a></li>
<li><a href="../classes/InteractionData.html">InteractionData</a></li>
<li><a href="../classes/InteractionManager.html">InteractionManager</a></li>
<li><a href="../classes/InvertFilter.html">InvertFilter</a></li>
<li><a href="../classes/JsonLoader.html">JsonLoader</a></li>
<li><a href="../classes/Matrix.html">Matrix</a></li>
<li><a href="../classes/Matrix2.html">Matrix2</a></li>
<li><a href="../classes/MovieClip.html">MovieClip</a></li>
<li><a href="../classes/NormalMapFilter.html">NormalMapFilter</a></li>
<li><a href="../classes/PixelateFilter.html">PixelateFilter</a></li>
<li><a href="../classes/PixiFastShader.html">PixiFastShader</a></li>
<li><a href="../classes/PixiShader.html">PixiShader</a></li>
<li><a href="../classes/Point.html">Point</a></li>
<li><a href="../classes/Polygon.html">Polygon</a></li>
<li><a href="../classes/PolyK.html">PolyK</a></li>
<li><a href="../classes/PrimitiveShader.html">PrimitiveShader</a></li>
<li><a href="../classes/Rectangle.html">Rectangle</a></li>
<li><a href="../classes/Rope.html">Rope</a></li>
<li><a href="../classes/SepiaFilter.html">SepiaFilter</a></li>
<li><a href="../classes/Spine.html">Spine</a></li>
<li><a href="../classes/Sprite.html">Sprite</a></li>
<li><a href="../classes/SpriteBatch.html">SpriteBatch</a></li>
<li><a href="../classes/SpriteSheetLoader.html">SpriteSheetLoader</a></li>
<li><a href="../classes/Stage.html">Stage</a></li>
<li><a href="../classes/Strip.html">Strip</a></li>
<li><a href="../classes/Text.html">Text</a></li>
<li><a href="../classes/Texture.html">Texture</a></li>
<li><a href="../classes/TilingSprite.html">TilingSprite</a></li>
<li><a href="../classes/TwistFilter.html">TwistFilter</a></li>
<li><a href="../classes/WebGLFilterManager.html">WebGLFilterManager</a></li>
<li><a href="../classes/WebGLGraphics.html">WebGLGraphics</a></li>
<li><a href="../classes/WebGLMaskManager.html">WebGLMaskManager</a></li>
<li><a href="../classes/WebGLRenderer.html">WebGLRenderer</a></li>
<li><a href="../classes/WebGLShaderManager.html">WebGLShaderManager</a></li>
<li><a href="../classes/WebGLSpriteBatch.html">WebGLSpriteBatch</a></li>
<li><a href="../classes/WebGLStencilManager.html">WebGLStencilManager</a></li>
</ul>
<ul id="api-modules" class="apis modules">
<li><a href="../modules/PIXI.html">PIXI</a></li>
</ul>
</div>
</div>
</div>
</div>
</div>
<div class="yui3-u-3-4">
<div id="api-options">
Show:
<label for="api-show-inherited">
<input type="checkbox" id="api-show-inherited" checked>
Inherited
</label>
<label for="api-show-protected">
<input type="checkbox" id="api-show-protected">
Protected
</label>
<label for="api-show-private">
<input type="checkbox" id="api-show-private">
Private
</label>
<label for="api-show-deprecated">
<input type="checkbox" id="api-show-deprecated">
Deprecated
</label>
</div>
<div class="apidocs">
<div id="docs-main">
<div class="content">
<h1 class="file-heading">File: src/pixi/textures/Texture.js</h1>
<div class="file">
<pre class="code prettyprint linenums">
/**
* @author Mat Groves http://matgroves.com/ @Doormat23
*/
PIXI.TextureCache = {};
PIXI.FrameCache = {};
PIXI.TextureCacheIdGenerator = 0;
/**
* A texture stores the information that represents an image or part of an image. It cannot be added
* to the display list directly. To do this use PIXI.Sprite. If no frame is provided then the whole image is used
*
* @class Texture
* @uses EventTarget
* @constructor
* @param baseTexture {BaseTexture} The base texture source to create the texture from
* @param frame {Rectangle} The rectangle frame of the texture to show
*/
PIXI.Texture = function(baseTexture, frame)
{
PIXI.EventTarget.call( this );
/**
* Does this Texture have any frame data assigned to it?
*
* @property noFrame
* @type Boolean
*/
this.noFrame = false;
if (!frame)
{
this.noFrame = true;
frame = new PIXI.Rectangle(0,0,1,1);
}
if (baseTexture instanceof PIXI.Texture)
{
baseTexture = baseTexture.baseTexture;
}
/**
* The base texture that this texture uses.
*
* @property baseTexture
* @type BaseTexture
*/
this.baseTexture = baseTexture;
/**
* The frame specifies the region of the base texture that this texture uses
*
* @property frame
* @type Rectangle
*/
this.frame = frame;
/**
* The trim point
*
* @property trim
* @type Rectangle
*/
this.trim = null;
/**
* This will let the renderer know if the texture is valid. If its not then it cannot be rendered.
*
* @property valid
* @type Boolean
*/
this.valid = false;
/**
* The context scope under which events are run.
*
* @property scope
* @type Object
*/
this.scope = this;
/**
* The WebGL UV data cache.
*
* @private
* @property _uvs
* @type Object
*/
this._uvs = null;
/**
* The width of the Texture in pixels.
*
* @property width
* @type Number
*/
this.width = 0;
/**
* The height of the Texture in pixels.
*
* @property height
* @type Number
*/
this.height = 0;
/**
* This is the area of the BaseTexture image to actually copy to the Canvas / WebGL when rendering,
* irrespective of the actual frame size or placement (which can be influenced by trimmed texture atlases)
*
* @property crop
* @type Rectangle
*/
this.crop = new PIXI.Rectangle(0, 0, 1, 1);
if (baseTexture.hasLoaded)
{
if (this.noFrame) frame = new PIXI.Rectangle(0, 0, baseTexture.width, baseTexture.height);
this.setFrame(frame);
}
else
{
var scope = this;
baseTexture.addEventListener('loaded', function(){ scope.onBaseTextureLoaded(); });
}
};
PIXI.Texture.prototype.constructor = PIXI.Texture;
/**
* Called when the base texture is loaded
*
* @method onBaseTextureLoaded
* @param event
* @private
*/
PIXI.Texture.prototype.onBaseTextureLoaded = function()
{
var baseTexture = this.baseTexture;
baseTexture.removeEventListener('loaded', this.onLoaded);
if (this.noFrame) this.frame = new PIXI.Rectangle(0, 0, baseTexture.width, baseTexture.height);
this.setFrame(this.frame);
this.scope.dispatchEvent( { type: 'update', content: this } );
};
/**
* Destroys this texture
*
* @method destroy
* @param destroyBase {Boolean} Whether to destroy the base texture as well
*/
PIXI.Texture.prototype.destroy = function(destroyBase)
{
if (destroyBase) this.baseTexture.destroy();
this.valid = false;
};
/**
* Specifies the region of the baseTexture that this texture will use.
*
* @method setFrame
* @param frame {Rectangle} The frame of the texture to set it to
*/
PIXI.Texture.prototype.setFrame = function(frame)
{
this.noFrame = false;
this.frame = frame;
this.width = frame.width;
this.height = frame.height;
this.crop.x = frame.x;
this.crop.y = frame.y;
this.crop.width = frame.width;
this.crop.height = frame.height;
if (!this.trim && (frame.x + frame.width > this.baseTexture.width || frame.y + frame.height > this.baseTexture.height))
{
throw new Error('Texture Error: frame does not fit inside the base Texture dimensions ' + this);
}
this.valid = frame && frame.width && frame.height && this.baseTexture.source && this.baseTexture.hasLoaded;
if (this.trim)
{
this.width = this.trim.width;
this.height = this.trim.height;
this.frame.width = this.trim.width;
this.frame.height = this.trim.height;
}
if (this.valid) PIXI.Texture.frameUpdates.push(this);
};
/**
* Updates the internal WebGL UV cache.
*
* @method _updateWebGLuvs
* @private
*/
PIXI.Texture.prototype._updateWebGLuvs = function()
{
if(!this._uvs)this._uvs = new PIXI.TextureUvs();
var frame = this.crop;
var tw = this.baseTexture.width;
var th = this.baseTexture.height;
this._uvs.x0 = frame.x / tw;
this._uvs.y0 = frame.y / th;
this._uvs.x1 = (frame.x + frame.width) / tw;
this._uvs.y1 = frame.y / th;
this._uvs.x2 = (frame.x + frame.width) / tw;
this._uvs.y2 = (frame.y + frame.height) / th;
this._uvs.x3 = frame.x / tw;
this._uvs.y3 = (frame.y + frame.height) / th;
};
/**
* Helper function that returns a texture based on an image url
* If the image is not in the texture cache it will be created and loaded
*
* @static
* @method fromImage
* @param imageUrl {String} The image url of the texture
* @param crossorigin {Boolean} Whether requests should be treated as crossorigin
* @param scaleMode {Number} Should be one of the PIXI.scaleMode consts
* @return Texture
*/
PIXI.Texture.fromImage = function(imageUrl, crossorigin, scaleMode)
{
var texture = PIXI.TextureCache[imageUrl];
if(!texture)
{
texture = new PIXI.Texture(PIXI.BaseTexture.fromImage(imageUrl, crossorigin, scaleMode));
PIXI.TextureCache[imageUrl] = texture;
}
return texture;
};
/**
* Helper function that returns a texture based on a frame id
* If the frame id is not in the texture cache an error will be thrown
*
* @static
* @method fromFrame
* @param frameId {String} The frame id of the texture
* @return Texture
*/
PIXI.Texture.fromFrame = function(frameId)
{
var texture = PIXI.TextureCache[frameId];
if(!texture) throw new Error('The frameId "' + frameId + '" does not exist in the texture cache ');
return texture;
};
/**
* Helper function that returns a texture based on a canvas element
* If the canvas is not in the texture cache it will be created and loaded
*
* @static
* @method fromCanvas
* @param canvas {Canvas} The canvas element source of the texture
* @param scaleMode {Number} Should be one of the PIXI.scaleMode consts
* @return Texture
*/
PIXI.Texture.fromCanvas = function(canvas, scaleMode)
{
var baseTexture = PIXI.BaseTexture.fromCanvas(canvas, scaleMode);
return new PIXI.Texture( baseTexture );
};
/**
* Adds a texture to the textureCache.
*
* @static
* @method addTextureToCache
* @param texture {Texture}
* @param id {String} the id that the texture will be stored against.
*/
PIXI.Texture.addTextureToCache = function(texture, id)
{
PIXI.TextureCache[id] = texture;
};
/**
* Remove a texture from the textureCache.
*
* @static
* @method removeTextureFromCache
* @param id {String} the id of the texture to be removed
* @return {Texture} the texture that was removed
*/
PIXI.Texture.removeTextureFromCache = function(id)
{
var texture = PIXI.TextureCache[id];
delete PIXI.TextureCache[id];
delete PIXI.BaseTextureCache[id];
return texture;
};
// this is more for webGL.. it contains updated frames..
PIXI.Texture.frameUpdates = [];
PIXI.TextureUvs = function()
{
this.x0 = 0;
this.y0 = 0;
this.x1 = 0;
this.y1 = 0;
this.x2 = 0;
this.y2 = 0;
this.x3 = 0;
this.y3 = 0;
};
</pre>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<script src="../assets/vendor/prettify/prettify-min.js"></script>
<script>prettyPrint();</script>
<script src="../assets/js/yui-prettify.js"></script>
<script src="../assets/../api.js"></script>
<script src="../assets/js/api-filter.js"></script>
<script src="../assets/js/api-list.js"></script>
<script src="../assets/js/api-search.js"></script>
<script src="../assets/js/apidocs.js"></script>
</body>
</html>