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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - postprocessing backgrounds</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> - Backgrounds: ClearPass, TexturePass and CubeTexturePass<br/>
- by <a href="https://clara.io" target="_blank" rel="noopener">Ben Houston</a>
- </div>
- <div id="container"></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 { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
- import { RenderPass } from 'three/addons/postprocessing/RenderPass.js';
- import { TexturePass } from 'three/addons/postprocessing/TexturePass.js';
- import { CubeTexturePass } from 'three/addons/postprocessing/CubeTexturePass.js';
- import { ClearPass } from 'three/addons/postprocessing/ClearPass.js';
- import { OutputPass } from 'three/addons/postprocessing/OutputPass.js';
- import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
- let scene, renderer, composer;
- let clearPass, texturePass, renderPass;
- let cameraP, cubeTexturePassP;
- let gui, stats;
- const params = {
- clearPass: true,
- clearColor: 'white',
- clearAlpha: 1.0,
- texturePass: true,
- texturePassOpacity: 1.0,
- cubeTexturePass: true,
- cubeTexturePassOpacity: 1.0,
- renderPass: true
- };
- init();
- clearGui();
- function clearGui() {
- if ( gui ) gui.destroy();
- gui = new GUI();
- gui.add( params, 'clearPass' );
- gui.add( params, 'clearColor', [ 'black', 'white', 'blue', 'green', 'red' ] );
- gui.add( params, 'clearAlpha', 0, 1 );
- gui.add( params, 'texturePass' );
- gui.add( params, 'texturePassOpacity', 0, 1 );
- gui.add( params, 'cubeTexturePass' );
- gui.add( params, 'cubeTexturePassOpacity', 0, 1 );
- gui.add( params, 'renderPass' );
- gui.open();
- }
- function init() {
- const container = document.getElementById( 'container' );
- const width = window.innerWidth || 1;
- const height = window.innerHeight || 1;
- const aspect = width / height;
- const devicePixelRatio = window.devicePixelRatio || 1;
- renderer = new THREE.WebGLRenderer();
- renderer.setPixelRatio( devicePixelRatio );
- renderer.setSize( width, height );
- renderer.setAnimationLoop( animate );
- document.body.appendChild( renderer.domElement );
- stats = new Stats();
- container.appendChild( stats.dom );
- //
- cameraP = new THREE.PerspectiveCamera( 65, aspect, 1, 10 );
- cameraP.position.z = 7;
- scene = new THREE.Scene();
- const group = new THREE.Group();
- scene.add( group );
- const light = new THREE.PointLight( 0xefffef, 500 );
- light.position.z = 10;
- light.position.y = - 10;
- light.position.x = - 10;
- scene.add( light );
- const light2 = new THREE.PointLight( 0xffefef, 500 );
- light2.position.z = 10;
- light2.position.x = - 10;
- light2.position.y = 10;
- scene.add( light2 );
- const light3 = new THREE.PointLight( 0xefefff, 500 );
- light3.position.z = 10;
- light3.position.x = 10;
- light3.position.y = - 10;
- scene.add( light3 );
- const geometry = new THREE.SphereGeometry( 1, 48, 24 );
- const material = new THREE.MeshStandardMaterial();
- material.roughness = 0.5 * Math.random() + 0.25;
- material.metalness = 0;
- material.color.setHSL( Math.random(), 1.0, 0.3 );
- const mesh = new THREE.Mesh( geometry, material );
- group.add( mesh );
- // postprocessing
- const genCubeUrls = function ( prefix, postfix ) {
- return [
- prefix + 'px' + postfix, prefix + 'nx' + postfix,
- prefix + 'py' + postfix, prefix + 'ny' + postfix,
- prefix + 'pz' + postfix, prefix + 'nz' + postfix
- ];
- };
- composer = new EffectComposer( renderer );
- clearPass = new ClearPass( params.clearColor, params.clearAlpha );
- composer.addPass( clearPass );
- texturePass = new TexturePass();
- composer.addPass( texturePass );
- const textureLoader = new THREE.TextureLoader();
- textureLoader.load( 'textures/hardwood2_diffuse.jpg', function ( map ) {
- map.colorSpace = THREE.SRGBColorSpace;
- texturePass.map = map;
- } );
- cubeTexturePassP = null;
- const ldrUrls = genCubeUrls( 'textures/cube/pisa/', '.png' );
- new THREE.CubeTextureLoader().load( ldrUrls, function ( ldrCubeMap ) {
- cubeTexturePassP = new CubeTexturePass( cameraP, ldrCubeMap );
- composer.insertPass( cubeTexturePassP, 2 );
- } );
- renderPass = new RenderPass( scene, cameraP );
- renderPass.clear = false;
- composer.addPass( renderPass );
- const outputPass = new OutputPass();
- composer.addPass( outputPass );
- const controls = new OrbitControls( cameraP, renderer.domElement );
- controls.enableZoom = false;
- window.addEventListener( 'resize', onWindowResize );
- }
- function onWindowResize() {
- const width = window.innerWidth;
- const height = window.innerHeight;
- const aspect = width / height;
- cameraP.aspect = aspect;
- cameraP.updateProjectionMatrix();
- renderer.setSize( width, height );
- composer.setSize( width, height );
- }
- function animate() {
- stats.begin();
- cameraP.updateMatrixWorld( true );
- let newColor = clearPass.clearColor;
- switch ( params.clearColor ) {
- case 'blue': newColor = 0x0000ff; break;
- case 'red': newColor = 0xff0000; break;
- case 'green': newColor = 0x00ff00; break;
- case 'white': newColor = 0xffffff; break;
- case 'black': newColor = 0x000000; break;
- }
- clearPass.enabled = params.clearPass;
- clearPass.clearColor = newColor;
- clearPass.clearAlpha = params.clearAlpha;
- texturePass.enabled = params.texturePass;
- texturePass.opacity = params.texturePassOpacity;
- if ( cubeTexturePassP !== null ) {
- cubeTexturePassP.enabled = params.cubeTexturePass;
- cubeTexturePassP.opacity = params.cubeTexturePassOpacity;
- }
- renderPass.enabled = params.renderPass;
- composer.render();
- stats.end();
- }
- </script>
- </body>
- </html>
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