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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - postprocessing</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 { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
- import { RenderPass } from 'three/addons/postprocessing/RenderPass.js';
- import { ShaderPass } from 'three/addons/postprocessing/ShaderPass.js';
- import { RGBShiftShader } from 'three/addons/shaders/RGBShiftShader.js';
- import { DotScreenShader } from 'three/addons/shaders/DotScreenShader.js';
- import { OutputPass } from 'three/addons/postprocessing/OutputPass.js';
- let camera, renderer, composer;
- let object;
- 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;
- const 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 );
- const material = new THREE.MeshPhongMaterial( { color: 0xffffff, flatShading: true } );
- for ( let i = 0; i < 100; i ++ ) {
- 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( 0xcccccc ) );
- const light = new THREE.DirectionalLight( 0xffffff, 3 );
- light.position.set( 1, 1, 1 );
- scene.add( light );
- // postprocessing
- composer = new EffectComposer( renderer );
- composer.addPass( new RenderPass( scene, camera ) );
- const effect1 = new ShaderPass( DotScreenShader );
- effect1.uniforms[ 'scale' ].value = 4;
- composer.addPass( effect1 );
- const effect2 = new ShaderPass( RGBShiftShader );
- effect2.uniforms[ 'amount' ].value = 0.0015;
- composer.addPass( effect2 );
- const effect3 = new OutputPass();
- composer.addPass( effect3 );
- //
- window.addEventListener( 'resize', onWindowResize );
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- composer.setSize( window.innerWidth, window.innerHeight );
- }
- function animate() {
- object.rotation.x += 0.005;
- object.rotation.y += 0.01;
- composer.render();
- }
- </script>
- </body>
- </html>
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