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193 lines
4.2 KiB
193 lines
4.2 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 - layers</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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<style>
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body {
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background-color: #f0f0f0;
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color: #444;
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}
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a {
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color: #08f;
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}
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</style>
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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> - webgl layers
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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 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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let container, stats;
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let camera, scene, renderer;
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let theta = 0;
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const radius = 100;
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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( 70, window.innerWidth / window.innerHeight, 1, 10000 );
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camera.layers.enable( 0 ); // enabled by default
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camera.layers.enable( 1 );
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camera.layers.enable( 2 );
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xf0f0f0 );
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const light = new THREE.PointLight( 0xffffff, 1 );
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light.layers.enable( 0 );
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light.layers.enable( 1 );
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light.layers.enable( 2 );
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scene.add( camera );
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camera.add( light );
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const colors = [ 0xff0000, 0x00ff00, 0x0000ff ];
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const geometry = new THREE.BoxGeometry( 20, 20, 20 );
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for ( let i = 0; i < 300; i ++ ) {
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const layer = ( i % 3 );
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const object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: colors[ layer ] } ) );
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object.position.x = Math.random() * 800 - 400;
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object.position.y = Math.random() * 800 - 400;
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object.position.z = Math.random() * 800 - 400;
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object.rotation.x = Math.random() * 2 * Math.PI;
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object.rotation.y = Math.random() * 2 * Math.PI;
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object.rotation.z = Math.random() * 2 * Math.PI;
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object.scale.x = Math.random() + 0.5;
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object.scale.y = Math.random() + 0.5;
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object.scale.z = Math.random() + 0.5;
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object.layers.set( layer );
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scene.add( object );
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}
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renderer = new THREE.WebGLRenderer();
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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stats = new Stats();
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container.appendChild( stats.dom );
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const layers = {
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'toggle red': function () {
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camera.layers.toggle( 0 );
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},
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'toggle green': function () {
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camera.layers.toggle( 1 );
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},
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'toggle blue': function () {
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camera.layers.toggle( 2 );
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},
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'enable all': function () {
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camera.layers.enableAll();
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},
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'disable all': function () {
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camera.layers.disableAll();
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}
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};
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//
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// Init gui
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const gui = new GUI();
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gui.add( layers, 'toggle red' );
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gui.add( layers, 'toggle green' );
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gui.add( layers, 'toggle blue' );
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gui.add( layers, 'enable all' );
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gui.add( layers, 'disable all' );
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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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renderer.setSize( window.innerWidth, window.innerHeight );
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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render();
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stats.update();
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}
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function render() {
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theta += 0.1;
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camera.position.x = radius * Math.sin( THREE.MathUtils.degToRad( theta ) );
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camera.position.y = radius * Math.sin( THREE.MathUtils.degToRad( theta ) );
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camera.position.z = radius * Math.cos( THREE.MathUtils.degToRad( theta ) );
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camera.lookAt( scene.position );
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renderer.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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