mirror of
https://github.com/photonstorm/phaser
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40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
/**
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* A sample demonstrating how to create new Phaser Filters.
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*/
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Phaser.Filter.LazerBeam = function (game) {
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Phaser.Filter.call(this, game);
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this.uniforms.divisor = { type: '1f', value: 0.5 };
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this.fragmentSrc = [
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"precision mediump float;",
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"uniform vec2 resolution;",
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"uniform float time;",
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"uniform float divisor;",
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"void main(void) {",
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"vec2 p = (gl_FragCoord.yx / resolution.yx) - .5;",
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"float sx = 0.3 * (p.x+ 0.8) * sin(900.0 * p.x - 1. * pow(time, 0.55)*5.);",
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"float dy = 4. / ( 500.0 * abs(p.y - sx));",
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"dy += 1./ (25. * length(p - vec2(p.x, 0)));",
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"gl_FragColor = vec4((p.x + 0.1) * dy, 0.3 * dy, dy, 1.1);",
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"}"
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];
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};
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Phaser.Filter.LazerBeam.prototype = Object.create(Phaser.Filter.prototype);
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Phaser.Filter.LazerBeam.prototype.constructor = Phaser.Filter.LazerBeam;
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Phaser.Filter.LazerBeam.prototype.init = function (width, height, divisor) {
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if (typeof divisor == 'undefined') { divisor = 0.5; }
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this.setResolution(width, height);
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this.uniforms.divisor.value = divisor;
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};
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