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133 lines
3.4 KiB
133 lines
3.4 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 - effects - peppers ghost</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> - <a href="https://en.wikipedia.org/wiki/Pepper%27s_ghost">peppers ghost effect</a> demo <br />
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<a href="http://www.instructables.com/id/Reflective-Prism/?ALLSTEPS" target="_blank" rel="noopener">how to build the reflective prism</a>
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</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 { PeppersGhostEffect } from 'three/addons/effects/PeppersGhostEffect.js';
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let container;
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let camera, scene, renderer, effect;
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let group;
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init();
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animate();
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function init() {
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container = document.createElement( 'div' );
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document.body.appendChild( container );
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camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 100000 );
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scene = new THREE.Scene();
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group = new THREE.Group();
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scene.add( group );
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// Cube
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const geometry = new THREE.BoxGeometry().toNonIndexed(); // ensure unique vertices for each triangle
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const position = geometry.attributes.position;
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const colors = [];
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const color = new THREE.Color();
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// generate for each side of the cube a different color
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for ( let i = 0; i < position.count; i += 6 ) {
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color.setHex( Math.random() * 0xffffff );
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// first face
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colors.push( color.r, color.g, color.b );
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colors.push( color.r, color.g, color.b );
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colors.push( color.r, color.g, color.b );
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// second face
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colors.push( color.r, color.g, color.b );
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colors.push( color.r, color.g, color.b );
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colors.push( color.r, color.g, color.b );
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}
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geometry.setAttribute( 'color', new THREE.Float32BufferAttribute( colors, 3 ) );
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const material = new THREE.MeshBasicMaterial( { vertexColors: true } );
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for ( let i = 0; i < 10; i ++ ) {
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const cube = new THREE.Mesh( geometry, material );
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cube.position.x = Math.random() * 2 - 1;
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cube.position.y = Math.random() * 2 - 1;
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cube.position.z = Math.random() * 2 - 1;
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cube.scale.multiplyScalar( Math.random() + 0.5 );
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group.add( cube );
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}
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renderer = new THREE.WebGLRenderer();
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renderer.setPixelRatio( window.devicePixelRatio );
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container.appendChild( renderer.domElement );
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effect = new PeppersGhostEffect( renderer );
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effect.setSize( window.innerWidth, window.innerHeight );
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effect.cameraDistance = 5;
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window.addEventListener( 'resize', onWindowResize );
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}
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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effect.setSize( window.innerWidth, window.innerHeight );
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}
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function animate() {
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requestAnimationFrame( animate );
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group.rotation.y += 0.01;
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effect.render( scene, camera );
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}
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</script>
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</body>
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</html>
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