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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - postprocessing - afterimage</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>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.module.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
- import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
- import { RenderPass } from 'three/addons/postprocessing/RenderPass.js';
- import { AfterimagePass } from 'three/addons/postprocessing/AfterimagePass.js';
- import { OutputPass } from 'three/addons/postprocessing/OutputPass.js';
- let camera, scene, renderer, composer;
- let mesh;
- let afterimagePass;
- const params = {
- enable: true
- };
- init();
- function init() {
- renderer = new THREE.WebGLRenderer();
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- 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 );
- const geometry = new THREE.BoxGeometry( 150, 150, 150, 2, 2, 2 );
- const material = new THREE.MeshNormalMaterial();
- mesh = new THREE.Mesh( geometry, material );
- scene.add( mesh );
- // postprocessing
- composer = new EffectComposer( renderer );
- composer.addPass( new RenderPass( scene, camera ) );
- afterimagePass = new AfterimagePass();
- composer.addPass( afterimagePass );
- const outputPass = new OutputPass();
- composer.addPass( outputPass );
- window.addEventListener( 'resize', onWindowResize );
- const gui = new GUI( { title: 'Damp setting' } );
- gui.add( afterimagePass.uniforms[ 'damp' ], 'value', 0, 1 ).step( 0.001 );
- gui.add( params, 'enable' );
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- composer.setSize( window.innerWidth, window.innerHeight );
- }
- function animate() {
- mesh.rotation.x += 0.005;
- mesh.rotation.y += 0.01;
- afterimagePass.enabled = params.enable;
- composer.render();
- }
- </script>
- </body>
- </html>
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