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230 lines
7.7 KiB
230 lines
7.7 KiB
5 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
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<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=0">
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<title>Leon Sans - Metaball PIXI</title>
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<style>
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html,
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body {
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width: 100%;
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height: 100%;
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overflow: hidden;
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outline: 0;
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margin: 0;
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padding: 0;
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cursor: move;
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}
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</style>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/hammer.js/2.0.8/hammer.min.js"></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/2.1.3/TweenMax.min.js"></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/pixi.js/5.0.4/pixi.min.js"></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.7.6/dat.gui.js"></script>
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</head>
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<body>
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<script src="../dist/leon.js"></script>
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<script src="js/util.js"></script>
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<script>
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let container, texture, particleCon;
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let leon, controll, weightControll;
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const particleTotal = 10000;
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let particles = [];
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function init() {
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generatePixi(0x000000);
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texture = PIXI.Texture.from('data/drop-alpha.png');
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particleCon = new PIXI.ParticleContainer(particleTotal, {
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vertices: false,
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scale: true,
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position: true,
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rotation: false,
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uvs: false,
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alpha: false
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});
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stage.addChild(particleCon);
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let p, i;
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for (i = 0; i < particleTotal; i++) {
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p = new PIXI.Sprite(texture);
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p.x = sw / 2;
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p.y = sh / 2;
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p.anchor.set(0.5);
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p.scale.x = p.scale.y = 0;
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particleCon.addChild(p);
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particles.push(p);
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}
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const blurFilter = new PIXI.filters.BlurFilter();
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blurFilter.blur = 10;
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blurFilter.autoFit = true;
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const fragSource = [
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'precision mediump float;',
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'varying vec2 vTextureCoord;',
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'uniform sampler2D uSampler;',
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'uniform float threshold;',
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'uniform float mr;',
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'uniform float mg;',
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'uniform float mb;',
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'void main(void)',
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'{',
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' vec4 color = texture2D(uSampler, vTextureCoord);',
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' vec3 mcolor = vec3(mr, mg, mb);',
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' if (color.a > threshold) {',
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' gl_FragColor = vec4(mcolor, 1.0);',
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' } else {',
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' gl_FragColor = vec4(vec3(0.0), 0.0);',
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' }',
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'}'
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].join('\n');
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const uniformsData = {
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threshold: 0.5,
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mr: 255.0/255.0,
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mg: 255.0/255.0,
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mb: 255.0/255.0,
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};
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const thresholdFilter = new PIXI.Filter(null, fragSource, uniformsData);
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stage.filters = [blurFilter, thresholdFilter];
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stage.filterArea = renderer.screen;
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controll = {
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weight: 3,
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color: {},
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outline: true,
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drawing: () => {
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let i;
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for (i = 0; i < particleTotal; i++) {
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TweenMax.killTweensOf(particles[i].scale);
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TweenMax.set(particles[i].scale, {
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x: 0,
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y: 0
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});
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TweenMax.to(particles[i].scale, 3, {
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delay: 0.001 * i,
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x: particles[i].saveScale,
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y: particles[i].saveScale,
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ease: Circ.easeOut
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});
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}
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}
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};
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leon = new LeonSans({
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text: 'TOP\n678',
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size: getSize(400),
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weight: 700,
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pathGap: -1,
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isPath: true,
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tracking: 0
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});
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leon.on('update', (model) => {
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update();
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});
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const gui = new dat.GUI();
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gui.add(leon, 'text');
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const sizeControll = gui.add(leon, 'size', 200, 1000);
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gui.add(leon, 'tracking', -6, 10);
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gui.add(leon, 'leading', -8, 10);
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weightControll = gui.add(controll, 'weight', 1, 9);
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gui.add(controll, 'drawing');
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const colorControll = gui.add(controll, 'color', [ 'white', 'black', 'red'] );
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sizeControll.onChange((value) => {
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sizeWeight();
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});
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weightControll.onChange((value) => {
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update();
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});
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colorControll.onChange((value) => {
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if (value == 'white') {
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renderer.backgroundColor = 0x000000;
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uniformsData.mr = 255.0/255.0;
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uniformsData.mg = 255.0/255.0;
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uniformsData.mb = 255.0/255.0;
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} else if (value == 'black') {
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renderer.backgroundColor = 0xffffff;
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uniformsData.mr = 0.0/255.0;
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uniformsData.mg = 0.0/255.0;
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uniformsData.mb = 0.0/255.0;
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} else if (value == 'red') {
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renderer.backgroundColor = 0xe4c143;
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uniformsData.mr = 244.0/255.0;
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uniformsData.mg = 46.0/255.0;
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uniformsData.mb = 33.0/255.0;
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}
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});
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colorControll.setValue('white');
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requestAnimationFrame(animate);
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sizeWeight();
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TweenMax.delayedCall(0.1, () => {
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controll.drawing();
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});
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}
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function sizeWeight() {
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let w;
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if (leon.size > 400) {
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w = (1.5 - 3) / (1000 - 400) * (leon.size - 400) + 3;
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} else {
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w = (3 - 6) / (400 - 200) * (leon.size - 200) + 6;
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}
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weightControll.setValue(w);
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}
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function update() {
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const total = leon.paths.length;
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const sw2 = sw / 2;
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const sh2 = sh / 2;
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let i, p, pos, scale;
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for (i = 0; i < particleTotal; i++) {
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p = particles[i];
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TweenMax.killTweensOf(p.scale);
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if (i < total) {
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pos = leon.paths[i];
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if (pos.type == 'a') {
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scale = controll.weight * 0.025* leon.scale;
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} else {
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scale = controll.weight * 0.01* leon.scale;
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}
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p.saveScale = scale;
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p.x = pos.x;
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p.y = pos.y;
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p.scale.x = p.scale.y = scale;
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} else {
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p.saveScale = 0;
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p.x = -1000;
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p.y = -1000;
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p.scale.x = p.scale.y = 0;
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}
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}
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}
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function animate(t) {
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requestAnimationFrame(animate);
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const x = (sw - leon.rect.w) / 2;
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const y = (sh - leon.rect.h) / 2;
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leon.position(x + moveX, y + moveY);
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renderer.render(stage);
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}
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window.onload = () => {
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init();
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};
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</script>
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</body>
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</html>
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