aboutsummaryrefslogtreecommitdiff
path: root/js/lib/rdge/texture.js
blob: dc0da2473aae975b8d79263affaa314067f17be3 (plain)
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
/* <copyright>
Copyright (c) 2012, Motorola Mobility, Inc
All Rights Reserved.
BSD License.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

  - Redistributions of source code must retain the above copyright notice,
    this list of conditions and the following disclaimer.
  - Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.
  - Neither the name of Motorola Mobility nor the names of its contributors
    may be used to endorse or promote products derived from this software
    without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
</copyright> */

var Material = require("js/lib/rdge/materials/material").Material;

var __textureCounter = 0;

///////////////////////////////////////////////////////////////////////
// Class GLTexture
//      GL representation of a texture.
///////////////////////////////////////////////////////////////////////
function Texture( dstWorld, texMapName,  wrap, mips )
{
    ///////////////////////////////////////////////////////////////////////
    // Instance variables
    ///////////////////////////////////////////////////////////////////////
    this._texture;

   // the canvas generating the texture map (if there is one)
    this._srcCanvas;    
    this._srcWorld;

    // texture attributes
    if (typeof texMapName === "string")
        this._texMapName = texMapName.slice();
    else
        this._srcCanvas = texMapName;
        

    // set default values for wrap and mips
    if (wrap === undefined)
        wrap = "REPEAT";
    if (mips === undefined)
        mips = true;
    this._wrap = wrap;
    this._mips = mips;

    // cache whether or not the source is animated
    this._isAnimated = false;
    
    // the destination world that will use the texture map
    this._dstWorld = dstWorld;

    this._texCount = __textureCounter;
    __textureCounter++;

    ///////////////////////////////////////////////////////////////////////
    // Property Accessors
    ///////////////////////////////////////////////////////////////////////
    this.getTexture     = function()    {  return this._texture;    }

    this.setSrcWorld    = function(w)   {  this._srcWorld = w;      }
    this.getSrcWorld    = function()    {  return this._srcWorld;   }

    this.setDstWorld    = function(w)   {  this._dstWorld = w;      }
    this.getDstWorld    = function()    {  return this._dstWorld;   }

    this.isAnimated     = function()    {  return this._isAnimated; }

    ///////////////////////////////////////////////////////////////////////
    // Methods
    ///////////////////////////////////////////////////////////////////////

    this.init = function()
    {
        // determine if the source is a canvas or an image file
        var viewUtils = require("js/helper-classes/3D/view-utils").ViewUtils;
        //var root = viewUtils.application.ninja.currentDocument.documentRoot;
        var root;
        if (viewUtils.application.ninja.currentDocument)
            root = viewUtils.application.ninja.currentDocument.model.documentRoot;
        var srcCanvas = this._srcCanvas;
        if (!srcCanvas && root)
            srcCanvas = this.findCanvas( this._texMapName, root );
        if (srcCanvas)
        {
            this._srcCanvas = srcCanvas;
            var srcWorld
            if (srcCanvas.elementModel && srcCanvas.elementModel.shapeModel  && srcCanvas.elementModel.shapeModel.GLWorld)
             srcWorld = srcCanvas.elementModel.shapeModel.GLWorld;
            if (!srcWorld)  srcWorld = srcCanvas.__GLWorld;
            if (srcWorld)
            {
                this._srcWorld = srcWorld;

                // add a notifier to the world
                srcWorld.addListener( this,  this.worldCallback,  { srcWorld: this._srcWorld } );

                // check if the source is animated
                this._isAnimated = srcWorld._hasAnimatedMaterials;
            }

            this.loadFromCanvas();
        }
        else
        {
            this.loadFromFile();  
        }
    }

    this.worldCallback = function( type, callbackObj,  calleeData,  callerData )
    {
        console.log( "texture callback, type: " + type );
        if (calleeData.srcWorld)
        {
            var srcWorld = callbackObj.getSrcWorld();
            var dstWorld = callbackObj.getDstWorld();
            var notifier = srcWorld._notifier;
            var texture = this.callbackObj;
            if (texture)
            {
                switch (type)
                {
                    case notifier.OBJECT_DELETE:
                        texture.rebuildSrcLocally();
                        break;

                    case notifier.OBJECT_REINSTANTIATE:
                        break;

                    case notifier.OBJECT_CHANGE:
                        break;

                    case notifier.FIRST_RENDER:
                        texture._isAnimated = srcWorld.hasAnimatedMaterials();
                        break;

                    default:
                        throw new Exception( "unrecognized texture callback type: " + type );
                        break;
                }
           }
        }
    }

    this.rebuildSrcLocally = function()
    {
        var srcWorld = this._srcWorld;
        if (srcWorld)
        {
            // get the data from the old world
            var jStr = srcWorld.exportJSON();
            var index = jStr.indexOf( ';' );
            if ((jStr[0] === 'v') && (index < 24))
                jStr = jStr.substr( index+1 );
            var jObj = JSON.parse( jStr );
            var oldCanvas = srcWorld.getCanvas();

            // create a new canvas
            var NJUtils = require("js/lib/NJUtils").NJUtils;
            this._srcCanvas = NJUtils.makeNJElement("canvas", "texture_internal_canvas", "shape", {"data-RDGE-id": NJUtils.generateRandom()}, true);
            srcCanvas = this._srcCanvas;
            srcCanvas.width  = oldCanvas.width;
            srcCanvas.height = oldCanvas.height;

            // rebuild the world
            var GLWorld = require("js/lib/drawing/world").World;
            this._srcWorld = new GLWorld( this._srcCanvas, true, true );
            this._srcWorld.importJSON( jObj );

            this._isLocal = true;
        }
    }

    this.loadFromFile = function()
    {
        var tex = this._texture;
        this._srcCanvas = null;

        // only load if something has changed
        //if (this._texMapName !== texMapName)  // does RDGE allow us to change wrap or mips?
        {
            var texMapName = this._texMapName;
            var wrap = this._wrap;
            var mips = this._mips;

            var dstWorld = this.getDstWorld();
            if (dstWorld)
            {
                var renderer = dstWorld.getRenderer();
                tex = renderer.getTextureByName(texMapName, wrap, mips );
                this._texture = tex;
                dstWorld.textureToLoad( tex );
            }
        }

        return tex;
    }

    var __texCounter = 0;
    this.loadFromCanvas = function()
    {
        var NJUtils = require("js/lib/NJUtils").NJUtils;
        
        var srcCanvas = this._srcCanvas;
        var wrap = this._wrap;
        var mips = this._mips;

        this._texMapName = "GLTexture_" + __texCounter;
        __texCounter++;

        // create the texture
        var world = this.getDstWorld();
        tex = world.getGLContext().createTexture();
        this._texture = tex;
        tex.texparams = new _texparams(wrap, mips); // defined in renderer.js
        tex.image = new Image;

        // create the canvas and context to render into
        var doc = srcCanvas.ownerDocument;
        //this._renderCanvas = doc.createElement("texture_canvas");
        this._renderCanvas = NJUtils.makeNJElement("canvas", "texture_canvas", "shape", {"data-RDGE-id": NJUtils.generateRandom()}, true);

        this.render();

        return tex;
    }

    this.render = function()
    {
        if (!this._srcCanvas)
            return;
        var srcCanvas = this._srcCanvas;

        if (this._isLocal)
        {
            this._srcWorld.update();
            this._srcWorld.draw();
        }

        var world = this.getDstWorld();
        if (!world)
        {
            console.log( "no world in GLTexture.render" );
            return;
        }
        var renderer = world.getRenderer();

        var width = srcCanvas.width,  height = srcCanvas.height;
        if (!this.isPowerOfTwo(width) || !this.isPowerOfTwo(height))
        {
            width = this.nextLowerPowerOfTwo( width );
            height = this.nextLowerPowerOfTwo( height );
        }

        // create a canvas to be used as the image for the texture map
        var renderCanvas = this._renderCanvas;
        if (!renderCanvas)
        {
            console.log( "no render canvas in GLTexture.render" );
            return;
        }
        renderCanvas.width = width;
        renderCanvas.height = height;
        var renderCtx = renderCanvas.getContext("2d");

        // create the texture
        var tex = this._texture;
        if (!tex)
        {
            console.log( "no texture in GLTexture.render" );
            return;
        }

        // copy the source canvas to the context to be used in the texture
        renderCtx.drawImage(srcCanvas, 0, 0, width, height);
        /*
        renderCtx.fillStyle = "#00000a";
        renderCtx.fillRect(0, 0, width, height );
        var imageData = renderCtx.getImageData(0,0,width, height);
        for (var i=3;  i<imageData.data.length;  i+=4)
        {
            imageData.data[i] = 128;
        }
        */

        /////////////////
        tex.image = renderCanvas;

        renderer.commitTexture( tex );

        return tex;
    }
 
    this.isPowerOfTwo = function(x)
    {
        return (x & (x - 1)) == 0;
    }
 
    this.nextHighestPowerOfTwo = function(x)
    {
        --x;
        for (var i = 1; i < 32; i <<= 1) {
            x = x | x >> i;
        }
        return x + 1;
    }
 
    this.nextLowerPowerOfTwo = function(x)
    {
        return this.nextHighestPowerOfTwo(x) >> 1;
    }

    this.findCanvas = function( id,  elt )
    {
        if (elt.id && elt.id === id)
            return elt;
 
        if (elt.children)
        {
            var nKids = elt.children.length;
            for (var i=0;  i<nKids;  i++)
            {
                var child = elt.children[i];
                var canvas = this.findCanvas( id, child );
                if (canvas)  return canvas;
            }
        }
   }

   // initialize the object
   this.init();
}

if (typeof exports === "object") {
    exports.Texture = Texture;
}