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258 lines
6.6 KiB
258 lines
6.6 KiB
2 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 - postprocessing backgrounds</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="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - Backgrounds: ClearPass, TexturePass and CubeTexturePass<br/>
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by <a href="https://clara.io" target="_blank" rel="noopener">Ben Houston</a>
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</div>
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<div id="container"></div>
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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 Stats from 'three/addons/libs/stats.module.js';
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import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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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 { TexturePass } from 'three/addons/postprocessing/TexturePass.js';
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import { CubeTexturePass } from 'three/addons/postprocessing/CubeTexturePass.js';
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import { ShaderPass } from 'three/addons/postprocessing/ShaderPass.js';
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import { ClearPass } from 'three/addons/postprocessing/ClearPass.js';
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import { CopyShader } from 'three/addons/shaders/CopyShader.js';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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let scene, renderer, composer;
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let clearPass, texturePass, renderPass;
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let cameraP, cubeTexturePassP;
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let gui, stats;
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const params = {
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clearPass: true,
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clearColor: 'white',
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clearAlpha: 1.0,
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texturePass: true,
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texturePassOpacity: 1.0,
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cubeTexturePass: true,
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cubeTexturePassOpacity: 1.0,
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renderPass: true
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};
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init();
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animate();
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clearGui();
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function clearGui() {
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if ( gui ) gui.destroy();
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gui = new GUI();
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gui.add( params, 'clearPass' );
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gui.add( params, 'clearColor', [ 'black', 'white', 'blue', 'green', 'red' ] );
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gui.add( params, 'clearAlpha', 0, 1 );
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gui.add( params, 'texturePass' );
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gui.add( params, 'texturePassOpacity', 0, 1 );
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gui.add( params, 'cubeTexturePass' );
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gui.add( params, 'cubeTexturePassOpacity', 0, 1 );
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gui.add( params, 'renderPass' );
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gui.open();
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}
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function init() {
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const container = document.getElementById( 'container' );
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const width = window.innerWidth || 1;
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const height = window.innerHeight || 1;
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const aspect = width / height;
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const devicePixelRatio = window.devicePixelRatio || 1;
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renderer = new THREE.WebGLRenderer();
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renderer.setPixelRatio( devicePixelRatio );
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renderer.setSize( width, height );
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document.body.appendChild( renderer.domElement );
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stats = new Stats();
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container.appendChild( stats.dom );
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//
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cameraP = new THREE.PerspectiveCamera( 65, aspect, 1, 10 );
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cameraP.position.z = 7;
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scene = new THREE.Scene();
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const group = new THREE.Group();
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scene.add( group );
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const light = new THREE.PointLight( 0xddffdd, 1.0 );
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light.position.z = 70;
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light.position.y = - 70;
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light.position.x = - 70;
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scene.add( light );
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const light2 = new THREE.PointLight( 0xffdddd, 1.0 );
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light2.position.z = 70;
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light2.position.x = - 70;
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light2.position.y = 70;
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scene.add( light2 );
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const light3 = new THREE.PointLight( 0xddddff, 1.0 );
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light3.position.z = 70;
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light3.position.x = 70;
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light3.position.y = - 70;
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scene.add( light3 );
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const geometry = new THREE.SphereGeometry( 1, 48, 24 );
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const material = new THREE.MeshStandardMaterial();
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material.roughness = 0.5 * Math.random() + 0.25;
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material.metalness = 0;
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material.color.setHSL( Math.random(), 1.0, 0.3 );
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const mesh = new THREE.Mesh( geometry, material );
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group.add( mesh );
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// postprocessing
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const genCubeUrls = function ( prefix, postfix ) {
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return [
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prefix + 'px' + postfix, prefix + 'nx' + postfix,
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prefix + 'py' + postfix, prefix + 'ny' + postfix,
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prefix + 'pz' + postfix, prefix + 'nz' + postfix
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];
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};
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composer = new EffectComposer( renderer );
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clearPass = new ClearPass( params.clearColor, params.clearAlpha );
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composer.addPass( clearPass );
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texturePass = new TexturePass();
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composer.addPass( texturePass );
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const textureLoader = new THREE.TextureLoader();
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textureLoader.load( 'textures/hardwood2_diffuse.jpg', function ( map ) {
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texturePass.map = map;
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} );
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cubeTexturePassP = null;
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const ldrUrls = genCubeUrls( 'textures/cube/pisa/', '.png' );
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new THREE.CubeTextureLoader().load( ldrUrls, function ( ldrCubeMap ) {
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cubeTexturePassP = new CubeTexturePass( cameraP, ldrCubeMap );
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composer.insertPass( cubeTexturePassP, 2 );
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} );
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renderPass = new RenderPass( scene, cameraP );
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renderPass.clear = false;
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composer.addPass( renderPass );
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const copyPass = new ShaderPass( CopyShader );
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composer.addPass( copyPass );
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const controls = new OrbitControls( cameraP, renderer.domElement );
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controls.enableZoom = false;
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window.addEventListener( 'resize', onWindowResize );
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}
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function onWindowResize() {
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const width = window.innerWidth;
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const height = window.innerHeight;
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const aspect = width / height;
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cameraP.aspect = aspect;
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cameraP.updateProjectionMatrix();
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renderer.setSize( width, height );
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composer.setSize( width, height );
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}
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function animate() {
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requestAnimationFrame( animate );
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stats.begin();
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cameraP.updateMatrixWorld( true );
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let newColor = clearPass.clearColor;
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switch ( params.clearColor ) {
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case 'blue': newColor = 0x0000ff; break;
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case 'red': newColor = 0xff0000; break;
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case 'green': newColor = 0x00ff00; break;
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case 'white': newColor = 0xffffff; break;
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case 'black': newColor = 0x000000; break;
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}
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clearPass.enabled = params.clearPass;
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clearPass.clearColor = newColor;
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clearPass.clearAlpha = params.clearAlpha;
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texturePass.enabled = params.texturePass;
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texturePass.opacity = params.texturePassOpacity;
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if ( cubeTexturePassP !== null ) {
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cubeTexturePassP.enabled = params.cubeTexturePass;
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cubeTexturePassP.opacity = params.cubeTexturePassOpacity;
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}
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renderPass.enabled = params.renderPass;
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composer.render();
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stats.end();
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}
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</script>
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</body>
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</html>
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