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webgl_lightprobe.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - light probe</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 - light probe
</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 { OrbitControls } from 'three/addons/controls/OrbitControls.js';
import { LightProbeGenerator } from 'three/addons/lights/LightProbeGenerator.js';
let mesh, renderer, scene, camera;
let gui;
let lightProbe;
let directionalLight;
// linear color space
const API = {
lightProbeIntensity: 1.0,
directionalLightIntensity: 0.2,
envMapIntensity: 1
};
init();
function init() {
// renderer
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
// tone mapping
renderer.toneMapping = THREE.NoToneMapping;
renderer.outputEncoding = THREE.sRGBEncoding;
// scene
scene = new THREE.Scene();
// camera
camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 1000 );
camera.position.set( 0, 0, 30 );
// controls
const controls = new OrbitControls( camera, renderer.domElement );
controls.addEventListener( 'change', render );
controls.minDistance = 10;
controls.maxDistance = 50;
controls.enablePan = false;
// probe
lightProbe = new THREE.LightProbe();
scene.add( lightProbe );
// light
directionalLight = new THREE.DirectionalLight( 0xffffff, API.directionalLightIntensity );
directionalLight.position.set( 10, 10, 10 );
scene.add( directionalLight );
// envmap
const genCubeUrls = function ( prefix, postfix ) {
return [
prefix + 'px' + postfix, prefix + 'nx' + postfix,
prefix + 'py' + postfix, prefix + 'ny' + postfix,
prefix + 'pz' + postfix, prefix + 'nz' + postfix
];
};
const urls = genCubeUrls( 'textures/cube/pisa/', '.png' );
new THREE.CubeTextureLoader().load( urls, function ( cubeTexture ) {
cubeTexture.encoding = THREE.sRGBEncoding;
scene.background = cubeTexture;
lightProbe.copy( LightProbeGenerator.fromCubeTexture( cubeTexture ) );
const geometry = new THREE.SphereGeometry( 5, 64, 32 );
//const geometry = new THREE.TorusKnotGeometry( 4, 1.5, 256, 32, 2, 3 );
const material = new THREE.MeshStandardMaterial( {
color: 0xffffff,
metalness: 0,
roughness: 0,
envMap: cubeTexture,
envMapIntensity: API.envMapIntensity,
} );
// mesh
mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
render();
} );
// gui
gui = new GUI( { title: 'Intensity' } );
gui.add( API, 'lightProbeIntensity', 0, 1, 0.02 )
.name( 'light probe' )
.onChange( function () {
lightProbe.intensity = API.lightProbeIntensity; render();
} );
gui.add( API, 'directionalLightIntensity', 0, 1, 0.02 )
.name( 'directional light' )
.onChange( function () {
directionalLight.intensity = API.directionalLightIntensity; render();
} );
gui.add( API, 'envMapIntensity', 0, 1, 0.02 )
.name( 'envMap' )
.onChange( function () {
mesh.material.envMapIntensity = API.envMapIntensity; render();
} );
// listener
window.addEventListener( 'resize', onWindowResize );
}
function onWindowResize() {
renderer.setSize( window.innerWidth, window.innerHeight );
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
render();
}
function render() {
renderer.render( scene, camera );
}
</script>
</body>
</html>