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170 lines
4.5 KiB
170 lines
4.5 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 - spot light</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> - SpotLights<br/>
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by <a href="http://master-domain.com" target="_blank" rel="noopener">Master James</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 { TWEEN } from 'three/addons/libs/tween.module.min.js';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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const 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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const camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 1, 2000 );
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const controls = new OrbitControls( camera, renderer.domElement );
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const scene = new THREE.Scene();
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const matFloor = new THREE.MeshPhongMaterial( { color: 0x808080 } );
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const matBox = new THREE.MeshPhongMaterial( { color: 0xaaaaaa } );
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const geoFloor = new THREE.PlaneGeometry( 2000, 2000 );
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const geoBox = new THREE.BoxGeometry( 3, 1, 2 );
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const mshFloor = new THREE.Mesh( geoFloor, matFloor );
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mshFloor.rotation.x = - Math.PI * 0.5;
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const mshBox = new THREE.Mesh( geoBox, matBox );
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const ambient = new THREE.AmbientLight( 0x111111 );
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const spotLight1 = createSpotlight( 0xFF7F00 );
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const spotLight2 = createSpotlight( 0x00FF7F );
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const spotLight3 = createSpotlight( 0x7F00FF );
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let lightHelper1, lightHelper2, lightHelper3;
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function init() {
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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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camera.position.set( 46, 22, - 21 );
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spotLight1.position.set( 15, 40, 45 );
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spotLight2.position.set( 0, 40, 35 );
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spotLight3.position.set( - 15, 40, 45 );
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lightHelper1 = new THREE.SpotLightHelper( spotLight1 );
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lightHelper2 = new THREE.SpotLightHelper( spotLight2 );
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lightHelper3 = new THREE.SpotLightHelper( spotLight3 );
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mshFloor.receiveShadow = true;
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mshFloor.position.set( 0, - 0.05, 0 );
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mshBox.castShadow = true;
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mshBox.receiveShadow = true;
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mshBox.position.set( 0, 5, 0 );
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scene.add( mshFloor );
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scene.add( mshBox );
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scene.add( ambient );
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scene.add( spotLight1, spotLight2, spotLight3 );
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scene.add( lightHelper1, lightHelper2, lightHelper3 );
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document.body.appendChild( renderer.domElement );
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window.addEventListener( 'resize', onWindowResize );
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controls.target.set( 0, 7, 0 );
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controls.maxPolarAngle = Math.PI / 2;
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controls.update();
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}
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function createSpotlight( color ) {
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const newObj = new THREE.SpotLight( color, 2 );
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newObj.castShadow = true;
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newObj.angle = 0.3;
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newObj.penumbra = 0.2;
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newObj.decay = 2;
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newObj.distance = 50;
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return newObj;
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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 tween( light ) {
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new TWEEN.Tween( light ).to( {
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angle: ( Math.random() * 0.7 ) + 0.1,
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penumbra: Math.random() + 1
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}, Math.random() * 3000 + 2000 )
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.easing( TWEEN.Easing.Quadratic.Out ).start();
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new TWEEN.Tween( light.position ).to( {
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x: ( Math.random() * 30 ) - 15,
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y: ( Math.random() * 10 ) + 15,
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z: ( Math.random() * 30 ) - 15
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}, Math.random() * 3000 + 2000 )
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.easing( TWEEN.Easing.Quadratic.Out ).start();
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}
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function animate() {
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tween( spotLight1 );
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tween( spotLight2 );
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tween( spotLight3 );
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setTimeout( animate, 5000 );
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}
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function render() {
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TWEEN.update();
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if ( lightHelper1 ) lightHelper1.update();
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if ( lightHelper2 ) lightHelper2.update();
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if ( lightHelper3 ) lightHelper3.update();
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renderer.render( scene, camera );
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requestAnimationFrame( render );
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}
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init();
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render();
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animate();
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</script>
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</body>
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</html>
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