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294 lines
6.5 KiB
294 lines
6.5 KiB
3 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - materials - video</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<link type="text/css" rel="stylesheet" href="main.css">
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</head>
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<body>
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<div id="overlay">
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<button id="startButton">Play</button>
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</div>
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<div id="container"></div>
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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl video demo<br/>
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playing <a href="http://durian.blender.org/" target="_blank" rel="noopener">sintel</a> trailer
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</div>
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<video id="video" loop crossOrigin="anonymous" playsinline style="display:none">
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<source src="textures/sintel.ogv" type='video/ogg; codecs="theora, vorbis"'>
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<source src="textures/sintel.mp4" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'>
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</video>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.module.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
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import { RenderPass } from 'three/addons/postprocessing/RenderPass.js';
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import { ShaderPass } from 'three/addons/postprocessing/ShaderPass.js';
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import { BloomPass } from 'three/addons/postprocessing/BloomPass.js';
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import { CopyShader } from 'three/addons/shaders/CopyShader.js';
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let container;
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let camera, scene, renderer;
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let video, texture, material, mesh;
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let composer;
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let mouseX = 0;
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let mouseY = 0;
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let windowHalfX = window.innerWidth / 2;
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let windowHalfY = window.innerHeight / 2;
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let cube_count;
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const meshes = [],
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materials = [],
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xgrid = 20,
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ygrid = 10;
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const startButton = document.getElementById( 'startButton' );
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startButton.addEventListener( 'click', function () {
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init();
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animate();
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} );
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function init() {
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const overlay = document.getElementById( 'overlay' );
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overlay.remove();
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container = document.createElement( 'div' );
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document.body.appendChild( container );
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camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
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camera.position.z = 500;
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scene = new THREE.Scene();
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const light = new THREE.DirectionalLight( 0xffffff );
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light.position.set( 0.5, 1, 1 ).normalize();
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scene.add( light );
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renderer = new THREE.WebGLRenderer();
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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video = document.getElementById( 'video' );
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video.play();
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video.addEventListener( 'play', function () {
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this.currentTime = 3;
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} );
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texture = new THREE.VideoTexture( video );
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//
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let i, j, ox, oy, geometry;
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const ux = 1 / xgrid;
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const uy = 1 / ygrid;
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const xsize = 480 / xgrid;
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const ysize = 204 / ygrid;
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const parameters = { color: 0xffffff, map: texture };
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cube_count = 0;
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for ( i = 0; i < xgrid; i ++ ) {
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for ( j = 0; j < ygrid; j ++ ) {
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ox = i;
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oy = j;
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geometry = new THREE.BoxGeometry( xsize, ysize, xsize );
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change_uvs( geometry, ux, uy, ox, oy );
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materials[ cube_count ] = new THREE.MeshLambertMaterial( parameters );
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material = materials[ cube_count ];
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material.hue = i / xgrid;
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material.saturation = 1 - j / ygrid;
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material.color.setHSL( material.hue, material.saturation, 0.5 );
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mesh = new THREE.Mesh( geometry, material );
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mesh.position.x = ( i - xgrid / 2 ) * xsize;
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mesh.position.y = ( j - ygrid / 2 ) * ysize;
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mesh.position.z = 0;
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mesh.scale.x = mesh.scale.y = mesh.scale.z = 1;
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scene.add( mesh );
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mesh.dx = 0.001 * ( 0.5 - Math.random() );
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mesh.dy = 0.001 * ( 0.5 - Math.random() );
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meshes[ cube_count ] = mesh;
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cube_count += 1;
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}
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}
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renderer.autoClear = false;
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document.addEventListener( 'mousemove', onDocumentMouseMove );
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// postprocessing
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const renderModel = new RenderPass( scene, camera );
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const effectBloom = new BloomPass( 1.3 );
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const effectCopy = new ShaderPass( CopyShader );
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composer = new EffectComposer( renderer );
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composer.addPass( renderModel );
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composer.addPass( effectBloom );
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composer.addPass( effectCopy );
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//
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window.addEventListener( 'resize', onWindowResize );
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}
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function onWindowResize() {
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windowHalfX = window.innerWidth / 2;
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windowHalfY = window.innerHeight / 2;
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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composer.setSize( window.innerWidth, window.innerHeight );
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}
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function change_uvs( geometry, unitx, unity, offsetx, offsety ) {
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const uvs = geometry.attributes.uv.array;
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for ( let i = 0; i < uvs.length; i += 2 ) {
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uvs[ i ] = ( uvs[ i ] + offsetx ) * unitx;
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uvs[ i + 1 ] = ( uvs[ i + 1 ] + offsety ) * unity;
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}
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}
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function onDocumentMouseMove( event ) {
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mouseX = ( event.clientX - windowHalfX );
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mouseY = ( event.clientY - windowHalfY ) * 0.3;
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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render();
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}
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let h, counter = 1;
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function render() {
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const time = Date.now() * 0.00005;
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camera.position.x += ( mouseX - camera.position.x ) * 0.05;
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camera.position.y += ( - mouseY - camera.position.y ) * 0.05;
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camera.lookAt( scene.position );
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for ( let i = 0; i < cube_count; i ++ ) {
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material = materials[ i ];
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h = ( 360 * ( material.hue + time ) % 360 ) / 360;
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material.color.setHSL( h, material.saturation, 0.5 );
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}
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if ( counter % 1000 > 200 ) {
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for ( let i = 0; i < cube_count; i ++ ) {
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mesh = meshes[ i ];
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mesh.rotation.x += 10 * mesh.dx;
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mesh.rotation.y += 10 * mesh.dy;
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mesh.position.x -= 150 * mesh.dx;
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mesh.position.y += 150 * mesh.dy;
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mesh.position.z += 300 * mesh.dx;
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}
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}
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if ( counter % 1000 === 0 ) {
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for ( let i = 0; i < cube_count; i ++ ) {
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mesh = meshes[ i ];
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mesh.dx *= - 1;
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mesh.dy *= - 1;
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}
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}
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counter ++;
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renderer.clear();
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composer.render();
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}
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</script>
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</body>
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</html>
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