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2 years ago
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - postprocessing - digital glitch</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link type="text/css" rel="stylesheet" href="main.css">
</head>
<body>
<div id="overlay">
<h2>WARNING</h2>
<p style="text-align: center; max-width:450px; margin-bottom:40px;">
This example may potentially trigger seizures for people with <strong>photosensitive epilepsy</strong>.
</p>
<button id="startButton">Okay</button>
</div>
<div id="info">
<label for="dotScreen">Glitch me wild:</label><input id="wildGlitch" type="checkbox"/><br />
</div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
import { RenderPass } from 'three/addons/postprocessing/RenderPass.js';
import { GlitchPass } from 'three/addons/postprocessing/GlitchPass.js';
let camera, scene, renderer, composer;
let object, light;
let glitchPass;
const button = document.querySelector( '#startButton' );
button.addEventListener( 'click', function () {
const overlay = document.getElementById( 'overlay' );
overlay.remove();
init();
animate();
} );
function updateOptions() {
const wildGlitch = document.getElementById( 'wildGlitch' );
glitchPass.goWild = wildGlitch.checked;
}
function init() {
renderer = new THREE.WebGLRenderer();
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
//
camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 1000 );
camera.position.z = 400;
scene = new THREE.Scene();
scene.fog = new THREE.Fog( 0x000000, 1, 1000 );
object = new THREE.Object3D();
scene.add( object );
const geometry = new THREE.SphereGeometry( 1, 4, 4 );
for ( let i = 0; i < 100; i ++ ) {
const material = new THREE.MeshPhongMaterial( { color: 0xffffff * Math.random(), flatShading: true } );
const mesh = new THREE.Mesh( geometry, material );
mesh.position.set( Math.random() - 0.5, Math.random() - 0.5, Math.random() - 0.5 ).normalize();
mesh.position.multiplyScalar( Math.random() * 400 );
mesh.rotation.set( Math.random() * 2, Math.random() * 2, Math.random() * 2 );
mesh.scale.x = mesh.scale.y = mesh.scale.z = Math.random() * 50;
object.add( mesh );
}
scene.add( new THREE.AmbientLight( 0x222222 ) );
light = new THREE.DirectionalLight( 0xffffff );
light.position.set( 1, 1, 1 );
scene.add( light );
// postprocessing
composer = new EffectComposer( renderer );
composer.addPass( new RenderPass( scene, camera ) );
glitchPass = new GlitchPass();
composer.addPass( glitchPass );
//
window.addEventListener( 'resize', onWindowResize );
const wildGlitchOption = document.getElementById( 'wildGlitch' );
wildGlitchOption.addEventListener( 'change', updateOptions );
updateOptions();
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
composer.setSize( window.innerWidth, window.innerHeight );
}
function animate() {
requestAnimationFrame( animate );
object.rotation.x += 0.005;
object.rotation.y += 0.01;
composer.render();
}
</script>
</body>
</html>