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<h1 class="page-title">Source: d:/wamp/www/phaser/src/pixi/filters/BlurYFilter.js</h1>
<section>
<article>
<pre class="sunlight-highlight-javascript linenums">/**
* @author Mat Groves http://matgroves.com/ @Doormat23
*/
/**
* The BlurYFilter applies a vertical Gaussian blur to an object.
*
* @class BlurYFilter
* @extends AbstractFilter
* @constructor
*/
PIXI.BlurYFilter = function()
{
PIXI.AbstractFilter.call( this );
this.passes = [this];
// set the uniforms
this.uniforms = {
blur: {type: '1f', value: 1/512}
};
this.fragmentSrc = [
'precision mediump float;',
'varying vec2 vTextureCoord;',
'varying vec4 vColor;',
'uniform float blur;',
'uniform sampler2D uSampler;',
'void main(void) {',
' vec4 sum = vec4(0.0);',
' sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y - 4.0*blur)) * 0.05;',
' sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y - 3.0*blur)) * 0.09;',
' sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y - 2.0*blur)) * 0.12;',
' sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y - blur)) * 0.15;',
' sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y)) * 0.16;',
' sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y + blur)) * 0.15;',
' sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y + 2.0*blur)) * 0.12;',
' sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y + 3.0*blur)) * 0.09;',
' sum += texture2D(uSampler, vec2(vTextureCoord.x, vTextureCoord.y + 4.0*blur)) * 0.05;',
' gl_FragColor = sum;',
'}'
];
};
PIXI.BlurYFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
PIXI.BlurYFilter.prototype.constructor = PIXI.BlurYFilter;
/**
* Sets the strength of both the blur.
*
* @property blur
* @type Number
* @default 2
*/
Object.defineProperty(PIXI.BlurYFilter.prototype, 'blur', {
get: function() {
return this.uniforms.blur.value / (1/7000);
},
set: function(value) {
//this.padding = value;
this.uniforms.blur.value = (1/7000) * value;
}
});
</pre>
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