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/* <copyright>
This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
(c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved.
</copyright> */
var Material = require("js/lib/rdge/materials/material").Material;
///////////////////////////////////////////////////////////////////////
// Class GLTexture
// GL representation of a texture.
///////////////////////////////////////////////////////////////////////
function Texture( dstWorld )
{
///////////////////////////////////////////////////////////////////////
// Instance variables
///////////////////////////////////////////////////////////////////////
this._texture;
// texture attributes
this._texMapName;
this._wrap;
this._mips;
this._srcCanvas; // the canvas generating the texture map.
this._dstWorld; // the world that will use the texture map
this._dstWorld = dstWorld;
///////////////////////////////////////////////////////////////////////
// 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; }
///////////////////////////////////////////////////////////////////////
// Methods
///////////////////////////////////////////////////////////////////////
this.loadFromFile = function( texMapName, wrap, mips )
{
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?
{
this._texMapName = texMapName.slice();
this._wrap = wrap;
this._mips = 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;
}
this.loadFromCanvas = function( srcCanvas, wrap, mips )
{
this._texMapName = "GLTexture_" + this.texCounter;
this.texCounter++;
//if (elt.elementModel && elt.elementModel.shapeModel && elt.elementModel.shapeModel.GLWorld)
var world = this.getDstWorld();
var renderer = world.getRenderer();
var imageData;
var width = srcCanvas.width, height = srcCanvas.height;
width = 128; height = 64; // some even power of 2 for now...
// create a canvas to be used as the image for the texture map
var doc = srcCanvas.ownerDocument;
var dstCanvas = doc.createElement("canvas");
dstCanvas.width = width;
dstCanvas.height = height;
var dstCtx = dstCanvas.getContext("2d");
var tex;
var srcCtx = srcCanvas.getContext("2d");
if (srcCtx)
{
tex = renderer.getTextureByName(this._texMapName, wrap, mips );
imageData = srcCtx.getImageData( 0, 0, width, height );
dstCtx.putImageData( imageData, 0, 0 );
}
else
{
tex = renderer.getTextureByName(this._texMapName, wrap, mips );
//tex = world.getGLContext().createTexture();
tex.image = new Image;
tex.wrap = wrap;
tex.mips = mips;
srcCtx = srcCanvas.getContext("experimental-webgl");
if (srcCtx)
{
// var data = new Uint8Array(width * height * 4);
// srcCtx.readPixels(0, 0, width, height, srcCtx.RGBA, srcCtx.UNSIGNED_BYTE, data);
// console.log( "pixel 0: " + data[width+0] + ", " + data[width+1] + ", " + data[width+2] + ", " + data[width+3] );
//
// //imageData.data = data;
// imageData = dstCtx.createImageData(width, height);
// var nBytes = width*height*4;
// for (var i=0; i<nBytes; i++)
// imageData.data[i] = data[i];
// dstCtx.putImageData( imageData, 0, 0 );
dstCtx.drawImage(srcCanvas, 0, 0);
}
}
/////////////////
tex.image = dstCanvas;
this._texture = tex;
return tex;
}
this.findPreviousWorld = function()
{
var prevWorld;
for ( var w in _worldStack )
{
world = _worldStack[w];
if (world == this.getWorld()) return prevWorld;
prevWorld = world;
}
}
var texCounter = 0;
}
if (typeof exports === "object") {
exports.Texture = Texture;
}
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