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webgl_lights_pointlights.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - lights - point lights</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link type="text/css" rel="stylesheet" href="main.css">
</head>
<body>
<div id="info">
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - point lights WebGL demo.<br />
Walt Disney head by <a href="http://web.archive.org/web/20120903131400/http://davidoreilly.com/post/18087489343/disneyhead" target="_blank" rel="noopener">David OReilly</a>
</div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import Stats from 'three/addons/libs/stats.module.js';
import { OBJLoader } from 'three/addons/loaders/OBJLoader.js';
let camera, scene, renderer,
light1, light2, light3, light4,
object, stats;
const clock = new THREE.Clock();
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 1000 );
camera.position.z = 100;
scene = new THREE.Scene();
//model
const loader = new OBJLoader();
loader.load( 'models/obj/walt/WaltHead.obj', function ( obj ) {
object = obj;
object.scale.multiplyScalar( 0.8 );
object.position.y = - 30;
scene.add( object );
} );
const sphere = new THREE.SphereGeometry( 0.5, 16, 8 );
//lights
light1 = new THREE.PointLight( 0xff0040, 2, 50 );
light1.add( new THREE.Mesh( sphere, new THREE.MeshBasicMaterial( { color: 0xff0040 } ) ) );
scene.add( light1 );
light2 = new THREE.PointLight( 0x0040ff, 2, 50 );
light2.add( new THREE.Mesh( sphere, new THREE.MeshBasicMaterial( { color: 0x0040ff } ) ) );
scene.add( light2 );
light3 = new THREE.PointLight( 0x80ff80, 2, 50 );
light3.add( new THREE.Mesh( sphere, new THREE.MeshBasicMaterial( { color: 0x80ff80 } ) ) );
scene.add( light3 );
light4 = new THREE.PointLight( 0xffaa00, 2, 50 );
light4.add( new THREE.Mesh( sphere, new THREE.MeshBasicMaterial( { color: 0xffaa00 } ) ) );
scene.add( light4 );
//renderer
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
//stats
stats = new Stats();
document.body.appendChild( stats.dom );
window.addEventListener( 'resize', onWindowResize );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
const time = Date.now() * 0.0005;
const delta = clock.getDelta();
if ( object ) object.rotation.y -= 0.5 * delta;
light1.position.x = Math.sin( time * 0.7 ) * 30;
light1.position.y = Math.cos( time * 0.5 ) * 40;
light1.position.z = Math.cos( time * 0.3 ) * 30;
light2.position.x = Math.cos( time * 0.3 ) * 30;
light2.position.y = Math.sin( time * 0.5 ) * 40;
light2.position.z = Math.sin( time * 0.7 ) * 30;
light3.position.x = Math.sin( time * 0.7 ) * 30;
light3.position.y = Math.cos( time * 0.3 ) * 40;
light3.position.z = Math.sin( time * 0.5 ) * 30;
light4.position.x = Math.sin( time * 0.3 ) * 30;
light4.position.y = Math.cos( time * 0.7 ) * 40;
light4.position.z = Math.sin( time * 0.5 ) * 30;
renderer.render( scene, camera );
}
</script>
</body>
</html>