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