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https://github.com/wassname/phaser.git
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photonstorm
113 lines
3.0 KiB
JavaScript
113 lines
3.0 KiB
JavaScript
PIXI.PlasmaFlowerFilter = function(width, height)
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{
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PIXI.AbstractFilter.call( this );
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this.passes = [this];
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var d = new Date();
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var dates = [
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d.getFullYear(), // the year (four digits)
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d.getMonth(), // the month (from 0-11)
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d.getDate(), // the day of the month (from 1-31)
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d.getHours()*60.0*60 + d.getMinutes()*60 + d.getSeconds()
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];
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this.uniforms = {
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iResolution: { type: 'f3', value: { x: width, y: height, z: 0 }},
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iGlobalTime: { type: 'f', value: 1 },
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iDate: { type: 'f4', value: dates }
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};
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// Shader by epsilum (https://www.shadertoy.com/view/Xdf3zH)
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this.fragmentSrc = [
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"precision mediump float;",
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"uniform vec3 iResolution;",
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"uniform float iGlobalTime;",
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"uniform float iChannelTime[4];",
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"uniform vec4 iMouse;",
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"uniform vec4 iDate;",
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"uniform vec3 iChannelResolution[4];",
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"// add any extra uniforms here",
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"float addFlower(float x, float y, float ax, float ay, float fx, float fy)",
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"{",
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"float xx=(x+sin(iGlobalTime*fx)*ax)*8.0;",
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"float yy=(y+cos(iGlobalTime*fy)*ay)*8.0;",
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"float angle = atan(yy,xx);",
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"float zz = 1.5*(cos(18.0*angle)*0.5+0.5) / (0.7 * 3.141592) + 1.2*(sin(15.0*angle)*0.5+0.5)/ (0.7 * 3.141592);",
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"return zz;",
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"}",
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"void main(void)",
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"{",
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"vec2 xy=(gl_FragCoord.xy/iResolution.x)*2.0-vec2(1.0,iResolution.y/iResolution.x);",
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"float x=xy.x;",
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"float y=xy.y;",
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"float p1 = addFlower(x, y, 0.8, 0.9, 0.95, 0.85);",
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"float p2 = addFlower(x, y, 0.7, 0.9, 0.42, 0.71);",
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"float p3 = addFlower(x, y, 0.5, 1.0, 0.23, 0.97);",
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"float p4 = addFlower(x, y, 0.8, 0.5, 0.81, 1.91);",
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"float p=clamp((p1+p2+p3+p4)*0.25, 0.0, 1.0);",
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"vec4 col;",
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"if (p < 0.5)",
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"col=vec4(mix(0.0,1.0,p*2.0), mix(0.0,0.63,p*2.0), 0.0, 1.0);",
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"else if (p >= 0.5 && p <= 0.75)",
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"col=vec4(mix(1.0, 1.0-0.32, (p-0.5)*4.0), mix(0.63, 0.0, (p-0.5)*4.0), mix(0.0,0.24,(p-0.5)*4.0), 1.0);",
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"else",
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"col=vec4(mix(0.68, 0.0, (p-0.75)*4.0), 0.0, mix(0.24, 0.0, (p-0.75)*4.0), 1.0);",
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"gl_FragColor = col;",
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"}"];
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}
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PIXI.PlasmaFlowerFilter.prototype = Object.create( PIXI.AbstractFilter.prototype );
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PIXI.PlasmaFlowerFilter.prototype.constructor = PIXI.PlasmaFlowerFilter;
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Object.defineProperty(PIXI.PlasmaFlowerFilter.prototype, 'iGlobalTime', {
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get: function() {
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return this.uniforms.iGlobalTime.value;
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},
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set: function(value) {
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this.uniforms.iGlobalTime.value = value;
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}
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});
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var game = new Phaser.Game(800, 600, Phaser.AUTO, 'phaser-example', { preload: preload, create: create, update: update, render: render });
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function preload() {
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game.load.image('texture', 'wip/64x64.png');
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}
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var filter;
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var sprite;
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function create() {
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sprite = game.add.sprite(0, 0, 'texture');
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sprite.width = 800;
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sprite.height = 600;
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filter = new PIXI.PlasmaFlowerFilter(sprite.width, sprite.height);
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sprite.filters = [filter];
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}
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function update() {
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filter.iGlobalTime = game.time.totalElapsedSeconds();
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}
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function render() {
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}
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