<!-- Licensed under a BSD license. See license.html for license -->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
<title>Three.js - Lights - Hemisphere</title>
<style>
html, body {
margin: 0;
height: 100%;
}
#c {
width: 100%;
height: 100%;
display: block;
}
</style>
</head>
<body>
<canvas id="c"></canvas>
</body>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.8.0/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"three": "../../build/three.module.js",
"three/addons/": "../../examples/jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
function main() {
const canvas = document.querySelector( '#c' );
const renderer = new THREE.WebGLRenderer( { antialias: true, canvas } );
const fov = 45;
const aspect = 2; // the canvas default
const near = 0.1;
const far = 100;
const camera = new THREE.PerspectiveCamera( fov, aspect, near, far );
camera.position.set( 0, 10, 20 );
const controls = new OrbitControls( camera, canvas );
controls.target.set( 0, 5, 0 );
controls.update();
const scene = new THREE.Scene();
scene.background = new THREE.Color( 'black' );
{
const planeSize = 40;
const loader = new THREE.TextureLoader();
const texture = loader.load( 'resources/images/checker.png' );
texture.wrapS = THREE.RepeatWrapping;
texture.wrapT = THREE.RepeatWrapping;
texture.magFilter = THREE.NearestFilter;
texture.colorSpace = THREE.SRGBColorSpace;
const repeats = planeSize / 2;
texture.repeat.set( repeats, repeats );
const planeGeo = new THREE.PlaneGeometry( planeSize, planeSize );
const planeMat = new THREE.MeshPhongMaterial( {
map: texture,
side: THREE.DoubleSide,
} );
const mesh = new THREE.Mesh( planeGeo, planeMat );
mesh.rotation.x = Math.PI * - .5;
scene.add( mesh );
}
{
const cubeSize = 4;
const cubeGeo = new THREE.BoxGeometry( cubeSize, cubeSize, cubeSize );
const cubeMat = new THREE.MeshPhongMaterial( { color: '#8AC' } );
const mesh = new THREE.Mesh( cubeGeo, cubeMat );
mesh.position.set( cubeSize + 1, cubeSize / 2, 0 );
scene.add( mesh );
}
{
const sphereRadius = 3;
const sphereWidthDivisions = 32;
const sphereHeightDivisions = 16;
const sphereGeo = new THREE.SphereGeometry( sphereRadius, sphereWidthDivisions, sphereHeightDivisions );
const sphereMat = new THREE.MeshPhongMaterial( { color: '#CA8' } );
const mesh = new THREE.Mesh( sphereGeo, sphereMat );
mesh.position.set( - sphereRadius - 1, sphereRadius + 2, 0 );
scene.add( mesh );
}
class ColorGUIHelper {
constructor( object, prop ) {
this.object = object;
this.prop = prop;
}
get value() {
return `#${this.object[ this.prop ].getHexString()}`;
}
set value( hexString ) {
this.object[ this.prop ].set( hexString );
}
}
{
const skyColor = 0xB1E1FF; // light blue
const groundColor = 0xB97A20; // brownish orange
const intensity = 1;
const light = new THREE.HemisphereLight( skyColor, groundColor, intensity );
scene.add( light );
const gui = new GUI();
gui.addColor( new ColorGUIHelper( light, 'color' ), 'value' ).name( 'skyColor' );
gui.addColor( new ColorGUIHelper( light, 'groundColor' ), 'value' ).name( 'groundColor' );
gui.add( light, 'intensity', 0, 5, 0.01 );
}
function resizeRendererToDisplaySize( renderer ) {
const canvas = renderer.domElement;
const width = canvas.clientWidth;
const height = canvas.clientHeight;
const needResize = canvas.width !== width || canvas.height !== height;
if ( needResize ) {
renderer.setSize( width, height, false );
}
return needResize;
}
function render() {
if ( resizeRendererToDisplaySize( renderer ) ) {
const canvas = renderer.domElement;
camera.aspect = canvas.clientWidth / canvas.clientHeight;
camera.updateProjectionMatrix();
}
renderer.render( scene, camera );
requestAnimationFrame( render );
}
requestAnimationFrame( render );
}
main();
</script>
</html>