/**
 * @author Mat Groves http://matgroves.com/ @Doormat23
 */



PIXI.RGBSplitFilter = function()
{
	PIXI.AbstractFilter.call( this );
	
	this.passes = [this];
	
	// set the uniforms
	this.uniforms = {
		red: {type: '2f', value: {x:20, y:20}},
		green: {type: '2f', value: {x:-20, y:20}},
		blue: {type: '2f', value: {x:20, y:-20}},
		dimensions:   {type: '4fv', value:[0,0,0,0]}
	};
	
	this.fragmentSrc = [
	  "precision mediump float;",
	  "varying vec2 vTextureCoord;",
	  "varying float vColor;",
	  "uniform vec2 red;",
	  "uniform vec2 green;",
	  "uniform vec2 blue;",
	  "uniform vec4 dimensions;",
	  "uniform sampler2D uSampler;",
	    "void main(void) {",
	  	  "gl_FragColor.r = texture2D(uSampler, vTextureCoord + red/dimensions.xy).r;",
	  	  "gl_FragColor.g = texture2D(uSampler, vTextureCoord + green/dimensions.xy).g;",
	  	  "gl_FragColor.b = texture2D(uSampler, vTextureCoord + blue/dimensions.xy).b;",
	  	  "gl_FragColor.a = texture2D(uSampler, vTextureCoord).a;",
	  "}"
	];
}

PIXI.RGBSplitFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.RGBSplitFilter.prototype.constructor = PIXI.RGBSplitFilter;

Object.defineProperty(PIXI.RGBSplitFilter.prototype, 'angle', {
    get: function() {
        return this.uniforms.blur.value / (1/7000);
    },
    set: function(value) {
    	//this.padding = value;
    	this.uniforms.blur.value = (1/7000) * value;
    }
});