203 lines
4.6 KiB
HTML
203 lines
4.6 KiB
HTML
<!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 by <a href="http://master-domain.com" target="_blank" rel="noopener">Master James</a><br />
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</div>
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<script type="module">
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import * as THREE from '../build/three.module.js';
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import { GUI } from './jsm/libs/dat.gui.module.js';
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import { OrbitControls } from './jsm/controls/OrbitControls.js';
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let renderer, scene, camera;
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let spotLight, lightHelper, shadowCameraHelper;
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let gui;
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function init() {
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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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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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scene = new THREE.Scene();
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camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 1, 1000 );
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camera.position.set( 160, 40, 10 );
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.addEventListener( 'change', render );
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controls.minDistance = 20;
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controls.maxDistance = 500;
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controls.enablePan = false;
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const ambient = new THREE.AmbientLight( 0xffffff, 0.1 );
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scene.add( ambient );
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spotLight = new THREE.SpotLight( 0xffffff, 1 );
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spotLight.position.set( 15, 40, 35 );
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spotLight.angle = Math.PI / 4;
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spotLight.penumbra = 0.1;
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spotLight.decay = 2;
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spotLight.distance = 200;
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spotLight.castShadow = true;
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spotLight.shadow.mapSize.width = 512;
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spotLight.shadow.mapSize.height = 512;
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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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shadowCameraHelper = new THREE.CameraHelper( spotLight.shadow.camera );
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scene.add( shadowCameraHelper );
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//
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let material = new THREE.MeshPhongMaterial( { color: 0x808080, dithering: true } );
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let geometry = new THREE.PlaneGeometry( 2000, 2000 );
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let 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 * 0.5;
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mesh.receiveShadow = true;
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scene.add( mesh );
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//
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material = new THREE.MeshPhongMaterial( { color: 0x4080ff, dithering: true } );
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geometry = new THREE.CylinderGeometry( 5, 5, 2, 32, 1, false );
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mesh = new THREE.Mesh( geometry, material );
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mesh.position.set( 0, 5, 0 );
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mesh.castShadow = true;
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scene.add( mesh );
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render();
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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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function render() {
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lightHelper.update();
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shadowCameraHelper.update();
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renderer.render( scene, camera );
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}
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function buildGui() {
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gui = new GUI();
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const params = {
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'light 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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};
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gui.addColor( params, 'light color' ).onChange( function ( val ) {
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spotLight.color.setHex( val );
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render();
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} );
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gui.add( params, 'intensity', 0, 2 ).onChange( function ( val ) {
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spotLight.intensity = val;
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render();
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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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render();
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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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render();
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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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render();
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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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render();
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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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render();
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} );
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gui.open();
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}
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init();
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buildGui();
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render();
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</script>
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</body>
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</html>
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