123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287 |
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - scenes transition</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="info">
- <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgl scene transitions<br/>
- by <a href="https://twitter.com/fernandojsg">fernandojsg</a> - <a href="https://github.com/kile/three.js-demos">github</a>
- </div>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.module.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import Stats from 'three/addons/libs/stats.module.js';
- import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
- import TWEEN from 'three/addons/libs/tween.module.js';
- import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
- import { RenderTransitionPass } from 'three/addons/postprocessing/RenderTransitionPass.js';
- import { OutputPass } from 'three/addons/postprocessing/OutputPass.js';
- let stats;
- let renderer, composer, renderTransitionPass;
- const textures = [];
- const clock = new THREE.Clock();
- const params = {
- sceneAnimate: true,
- transitionAnimate: true,
- transition: 0,
- useTexture: true,
- texture: 5,
- cycle: true,
- threshold: 0.1,
- };
- const fxSceneA = new FXScene( new THREE.BoxGeometry( 2, 2, 2 ), new THREE.Vector3( 0, - 0.4, 0 ), 0xffffff );
- const fxSceneB = new FXScene( new THREE.IcosahedronGeometry( 1, 1 ), new THREE.Vector3( 0, 0.2, 0.1 ), 0x000000 );
- init();
- function init() {
- initGUI();
- initTextures();
- renderer = new THREE.WebGLRenderer( { antialias: true } );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- document.body.appendChild( renderer.domElement );
- composer = new EffectComposer( renderer );
- stats = new Stats();
- document.body.appendChild( stats.dom );
- renderTransitionPass = new RenderTransitionPass( fxSceneA.scene, fxSceneA.camera, fxSceneB.scene, fxSceneB.camera );
- renderTransitionPass.setTexture( textures[ 0 ] );
- composer.addPass( renderTransitionPass );
- const outputPass = new OutputPass();
- composer.addPass( outputPass );
- }
- window.addEventListener( 'resize', onWindowResize );
- function onWindowResize() {
- fxSceneA.resize();
- fxSceneB.resize();
- renderer.setSize( window.innerWidth, window.innerHeight );
- composer.setSize( window.innerWidth, window.innerHeight );
- }
- new TWEEN.Tween( params )
- .to( { transition: 1 }, 1500 )
- .onUpdate( function () {
- renderTransitionPass.setTransition( params.transition );
- // Change the current alpha texture after each transition
- if ( params.cycle ) {
- if ( params.transition == 0 || params.transition == 1 ) {
- params.texture = ( params.texture + 1 ) % textures.length;
- renderTransitionPass.setTexture( textures[ params.texture ] );
- }
- }
- } )
- .repeat( Infinity )
- .delay( 2000 )
- .yoyo( true )
- .start();
- function animate() {
- // Transition animation
- if ( params.transitionAnimate ) TWEEN.update();
- const delta = clock.getDelta();
- fxSceneA.update( delta );
- fxSceneB.update( delta );
- render();
- stats.update();
- }
- function initTextures() {
- const loader = new THREE.TextureLoader();
- for ( let i = 0; i < 6; i ++ ) {
- textures[ i ] = loader.load( 'textures/transition/transition' + ( i + 1 ) + '.png' );
- }
- }
- function initGUI() {
- const gui = new GUI();
- gui.add( params, 'sceneAnimate' ).name( 'Animate scene' );
- gui.add( params, 'transitionAnimate' ).name( 'Animate transition' );
- gui.add( params, 'transition', 0, 1, 0.01 ).onChange( function ( value ) {
- renderTransitionPass.setTransition( value );
- } ).listen();
- gui.add( params, 'useTexture' ).onChange( function ( value ) {
- renderTransitionPass.useTexture( value );
- } );
- gui.add( params, 'texture', { Perlin: 0, Squares: 1, Cells: 2, Distort: 3, Gradient: 4, Radial: 5 } ).onChange( function ( value ) {
- renderTransitionPass.setTexture( textures[ value ] );
- } ).listen();
- gui.add( params, 'cycle' );
- gui.add( params, 'threshold', 0, 1, 0.01 ).onChange( function ( value ) {
- renderTransitionPass.setTextureThreshold( value );
- } );
- }
- function render() {
- // Prevent render both scenes when it's not necessary
- if ( params.transition === 0 ) {
- renderer.render( fxSceneB.scene, fxSceneB.camera );
- } else if ( params.transition === 1 ) {
- renderer.render( fxSceneA.scene, fxSceneA.camera );
- } else {
- // When 0 < transition < 1 render transition between two scenes
- composer.render();
- }
- }
- function FXScene( geometry, rotationSpeed, backgroundColor ) {
- const camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.1, 100 );
- camera.position.z = 20;
- // Setup scene
- const scene = new THREE.Scene();
- scene.background = new THREE.Color( backgroundColor );
- scene.add( new THREE.AmbientLight( 0xaaaaaa, 3 ) );
- const light = new THREE.DirectionalLight( 0xffffff, 3 );
- light.position.set( 0, 1, 4 );
- scene.add( light );
- this.rotationSpeed = rotationSpeed;
- const color = geometry.type === 'BoxGeometry' ? 0x0000ff : 0xff0000;
- const material = new THREE.MeshPhongMaterial( { color: color, flatShading: true } );
- const mesh = generateInstancedMesh( geometry, material, 500 );
- scene.add( mesh );
- this.scene = scene;
- this.camera = camera;
- this.mesh = mesh;
- this.update = function ( delta ) {
- if ( params.sceneAnimate ) {
- mesh.rotation.x += this.rotationSpeed.x * delta;
- mesh.rotation.y += this.rotationSpeed.y * delta;
- mesh.rotation.z += this.rotationSpeed.z * delta;
- }
- };
- this.resize = function () {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- };
- }
- function generateInstancedMesh( geometry, material, count ) {
- const mesh = new THREE.InstancedMesh( geometry, material, count );
- const dummy = new THREE.Object3D();
- const color = new THREE.Color();
- for ( let i = 0; i < count; i ++ ) {
- dummy.position.x = Math.random() * 100 - 50;
- dummy.position.y = Math.random() * 60 - 30;
- dummy.position.z = Math.random() * 80 - 40;
- dummy.rotation.x = Math.random() * 2 * Math.PI;
- dummy.rotation.y = Math.random() * 2 * Math.PI;
- dummy.rotation.z = Math.random() * 2 * Math.PI;
- dummy.scale.x = Math.random() * 2 + 1;
- if ( geometry.type === 'BoxGeometry' ) {
- dummy.scale.y = Math.random() * 2 + 1;
- dummy.scale.z = Math.random() * 2 + 1;
- } else {
- dummy.scale.y = dummy.scale.x;
- dummy.scale.z = dummy.scale.x;
- }
- dummy.updateMatrix();
- mesh.setMatrixAt( i, dummy.matrix );
- mesh.setColorAt( i, color.setScalar( 0.1 + 0.9 * Math.random() ) );
- }
- return mesh;
- }
- </script>
- </body>
- </html>
|