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256 lines
6.0 KiB
256 lines
6.0 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 - lights - spotlight</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> webgl - spotlight<br />
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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 { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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import { PLYLoader } from 'three/addons/loaders/PLYLoader.js';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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let renderer, scene, camera;
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let spotLight, lightHelper;
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init();
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function init() {
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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document.body.appendChild( renderer.domElement );
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renderer.shadowMap.enabled = true;
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renderer.shadowMap.type = THREE.PCFSoftShadowMap;
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renderer.outputEncoding = THREE.sRGBEncoding;
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renderer.toneMapping = THREE.ACESFilmicToneMapping;
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renderer.toneMappingExposure = 1;
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renderer.setAnimationLoop( render );
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scene = new THREE.Scene();
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camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 1000 );
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camera.position.set( 70, 50, 10 );
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.minDistance = 20;
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controls.maxDistance = 100;
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controls.maxPolarAngle = Math.PI / 2;
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controls.target.set( 0, 18, 0 );
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controls.update();
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const ambient = new THREE.HemisphereLight( 0xffffff, 0x444444, 0.05 );
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scene.add( ambient );
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const loader = new THREE.TextureLoader().setPath( 'textures/' );
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const filenames = [ 'disturb.jpg', 'colors.png', 'uv_grid_opengl.jpg' ];
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const textures = { none: null };
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for ( let i = 0; i < filenames.length; i ++ ) {
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const filename = filenames[ i ];
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const texture = loader.load( filename );
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texture.minFilter = THREE.LinearFilter;
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texture.magFilter = THREE.LinearFilter;
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texture.encoding = THREE.sRGBEncoding;
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textures[ filename ] = texture;
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}
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spotLight = new THREE.SpotLight( 0xffffff, 5 );
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spotLight.position.set( 25, 50, 25 );
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spotLight.angle = Math.PI / 6;
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spotLight.penumbra = 1;
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spotLight.decay = 2;
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spotLight.distance = 100;
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spotLight.map = textures[ 'disturb.jpg' ];
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spotLight.castShadow = true;
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spotLight.shadow.mapSize.width = 1024;
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spotLight.shadow.mapSize.height = 1024;
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spotLight.shadow.camera.near = 10;
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spotLight.shadow.camera.far = 200;
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spotLight.shadow.focus = 1;
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scene.add( spotLight );
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lightHelper = new THREE.SpotLightHelper( spotLight );
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scene.add( lightHelper );
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//
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const geometry = new THREE.PlaneGeometry( 1000, 1000 );
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const material = new THREE.MeshLambertMaterial( { color: 0x808080 } );
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const mesh = new THREE.Mesh( geometry, material );
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mesh.position.set( 0, - 1, 0 );
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mesh.rotation.x = - Math.PI / 2;
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mesh.receiveShadow = true;
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scene.add( mesh );
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//
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new PLYLoader().load( 'models/ply/binary/Lucy100k.ply', function ( geometry ) {
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geometry.scale( 0.024, 0.024, 0.024 );
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geometry.computeVertexNormals();
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const material = new THREE.MeshLambertMaterial();
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const mesh = new THREE.Mesh( geometry, material );
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mesh.rotation.y = - Math.PI / 2;
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mesh.position.y = 18;
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mesh.castShadow = true;
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mesh.receiveShadow = true;
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scene.add( mesh );
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} );
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window.addEventListener( 'resize', onWindowResize );
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// GUI
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const gui = new GUI();
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const params = {
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map: textures[ 'disturb.jpg' ],
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color: spotLight.color.getHex(),
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intensity: spotLight.intensity,
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distance: spotLight.distance,
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angle: spotLight.angle,
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penumbra: spotLight.penumbra,
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decay: spotLight.decay,
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focus: spotLight.shadow.focus,
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shadows: true
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};
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gui.add( params, 'map', textures ).onChange( function ( val ) {
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spotLight.map = val;
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} );
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gui.addColor( params, 'color' ).onChange( function ( val ) {
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spotLight.color.setHex( val );
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} );
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gui.add( params, 'intensity', 0, 10 ).onChange( function ( val ) {
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spotLight.intensity = val;
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} );
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gui.add( params, 'distance', 50, 200 ).onChange( function ( val ) {
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spotLight.distance = val;
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} );
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gui.add( params, 'angle', 0, Math.PI / 3 ).onChange( function ( val ) {
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spotLight.angle = val;
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} );
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gui.add( params, 'penumbra', 0, 1 ).onChange( function ( val ) {
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spotLight.penumbra = val;
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} );
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gui.add( params, 'decay', 1, 2 ).onChange( function ( val ) {
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spotLight.decay = val;
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} );
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gui.add( params, 'focus', 0, 1 ).onChange( function ( val ) {
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spotLight.shadow.focus = val;
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} );
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gui.add( params, 'shadows' ).onChange( function ( val ) {
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renderer.shadowMap.enabled = val;
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scene.traverse( function ( child ) {
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if ( child.material ) {
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child.material.needsUpdate = true;
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}
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} );
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} );
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gui.open();
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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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function render() {
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const time = performance.now() / 3000;
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spotLight.position.x = Math.cos( time ) * 25;
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spotLight.position.z = Math.sin( time ) * 25;
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lightHelper.update();
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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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