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webgl_lights_spotlight.html
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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 by <a href="http://master-domain.com" target="_blank" rel="noopener">Master James</a><br />
</div>
<video id="video" loop crossOrigin="anonymous" webkit-playsinline style="display:none">
<source src="textures/sintel.ogv" type='video/ogg; codecs="theora, vorbis"'>
<source src="textures/sintel.mp4" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'>
</video>
<script type="module">
import * as THREE from '../build/three.module.js';
import { GUI } from './jsm/libs/dat.gui.module.js';
import { OrbitControls } from './jsm/controls/OrbitControls.js';
let renderer, scene, camera;
let spotLight, lightHelper, shadowCameraHelper;
let textureUrls, textures;
let gui;
function init() {
renderer = new THREE.WebGLRenderer();
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;
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 1, 1000 );
camera.position.set( 160, 40, 10 );
const controls = new OrbitControls( camera, renderer.domElement );
controls.addEventListener( 'change', render );
controls.minDistance = 20;
controls.maxDistance = 500;
controls.enablePan = false;
const ambient = new THREE.AmbientLight( 0xffffff, 0.1 );
scene.add( ambient );
const textureLoader = new THREE.TextureLoader();
textureUrls = [ 'none', 'sintel (video)', 'uv_grid_opengl.jpg', 'sprite2.png', 'colors.png' ];
textures = { none: null };
const video = document.getElementById( 'video' );
textures[ textureUrls[ 1 ] ] = new THREE.VideoTexture( video );
for ( let i = 2; i < textureUrls.length; ++i ) {
textures[ textureUrls[ i ] ] = textureLoader.load( 'textures/' + textureUrls[ i ] );
}
spotLight = new THREE.SpotLight( 0xffffff, 1 );
spotLight.position.set( 15, 40, 35 );
spotLight.angle = Math.PI / 4;
spotLight.penumbra = 0.1;
spotLight.decay = 2;
spotLight.distance = 200;
spotLight.castShadow = true;
spotLight.shadow.mapSize.width = 512;
spotLight.shadow.mapSize.height = 512;
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 );
shadowCameraHelper = new THREE.CameraHelper( spotLight.shadow.camera );
scene.add( shadowCameraHelper );
//
let material = new THREE.MeshPhongMaterial( { color: 0x808080, dithering: true } );
let geometry = new THREE.PlaneBufferGeometry( 2000, 2000 );
let mesh = new THREE.Mesh( geometry, material );
mesh.position.set( 0, - 1, 0 );
mesh.rotation.x = - Math.PI * 0.5;
mesh.receiveShadow = true;
scene.add( mesh );
//
material = new THREE.MeshPhongMaterial( { color: 0x4080ff, dithering: true } );
geometry = new THREE.CylinderBufferGeometry( 5, 5, 2, 32, 1, false );
mesh = new THREE.Mesh( geometry, material );
mesh.position.set( 0, 5, 0 );
mesh.castShadow = true;
scene.add( mesh );
render();
window.addEventListener( 'resize', onResize, false );
}
function onResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function render() {
lightHelper.update();
shadowCameraHelper.update();
renderer.render( scene, camera );
}
function buildGui() {
gui = new GUI();
const params = {
'light color': spotLight.color.getHex(),
intensity: spotLight.intensity,
distance: spotLight.distance,
angle: spotLight.angle,
penumbra: spotLight.penumbra,
decay: spotLight.decay,
focus: spotLight.shadow.focus,
map: 'none',
castShadow: spotLight.castShadow
};
gui.addColor( params, 'light color' ).onChange( function ( val ) {
spotLight.color.setHex( val );
render();
} );
gui.add( params, 'castShadow' ).onChange( function ( val ) {
spotLight.castShadow = val;
render();
} );
gui.add( params, 'intensity', 0, 2 ).onChange( function ( val ) {
spotLight.intensity = val;
render();
} );
gui.add( params, 'distance', 50, 200 ).onChange( function ( val ) {
spotLight.distance = val;
render();
} );
gui.add( params, 'angle', 0, Math.PI / 3 ).onChange( function ( val ) {
spotLight.angle = val;
render();
} );
gui.add( params, 'penumbra', 0, 1 ).onChange( function ( val ) {
spotLight.penumbra = val;
render();
} );
gui.add( params, 'decay', 1, 2 ).onChange( function ( val ) {
spotLight.decay = val;
render();
} );
gui.add( params, 'focus', 0, 1 ).onChange( function ( val ) {
spotLight.shadow.focus = val;
render();
} );
gui.add( params, 'map', textureUrls ).onChange( function ( val ) {
if (spotLight.map && spotLight.map.isVideoTexture) video.pause();
spotLight.map = textures[val];
if (spotLight.map && spotLight.map.isVideoTexture) video.play();
animate();
} );
gui.open();
}
init();
buildGui();
animate();
function animate() {
if (spotLight.map && spotLight.map.isVideoTexture) requestAnimationFrame( animate );
render();
}
</script>
</body>
</html>