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273 lines
6.8 KiB
273 lines
6.8 KiB
3 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - lights - hemisphere light</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<link type="text/css" rel="stylesheet" href="main.css">
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<style>
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body {
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color: #444;
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}
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a {
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color: #08f;
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}
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</style>
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</head>
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<body>
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<div id="container"></div>
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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl hemisphere light example<br/>
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flamingo by <a href="https://mirada.com/" target="_blank" rel="noopener">mirada</a> from <a href="http://www.ro.me" target="_blank" rel="noopener">ro.me</a><br/><br/>
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<button id="hemisphereButton">toggle hemisphere light</button>
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<button id="directionalButton">toggle directional light</button>
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</div>
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<script type="x-shader/x-vertex" id="vertexShader">
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varying vec3 vWorldPosition;
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void main() {
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vec4 worldPosition = modelMatrix * vec4( position, 1.0 );
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vWorldPosition = worldPosition.xyz;
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gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
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}
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</script>
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<script type="x-shader/x-fragment" id="fragmentShader">
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uniform vec3 topColor;
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uniform vec3 bottomColor;
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uniform float offset;
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uniform float exponent;
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varying vec3 vWorldPosition;
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void main() {
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float h = normalize( vWorldPosition + offset ).y;
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gl_FragColor = vec4( mix( bottomColor, topColor, max( pow( max( h , 0.0), exponent ), 0.0 ) ), 1.0 );
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}
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</script>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.module.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import Stats from 'three/addons/libs/stats.module.js';
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import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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let camera, scene, renderer;
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const mixers = [];
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let stats;
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const clock = new THREE.Clock();
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init();
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animate();
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function init() {
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const container = document.getElementById( 'container' );
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camera = new THREE.PerspectiveCamera( 30, window.innerWidth / window.innerHeight, 1, 5000 );
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camera.position.set( 0, 0, 250 );
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scene = new THREE.Scene();
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scene.background = new THREE.Color().setHSL( 0.6, 0, 1 );
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scene.fog = new THREE.Fog( scene.background, 1, 5000 );
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// LIGHTS
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const hemiLight = new THREE.HemisphereLight( 0xffffff, 0xffffff, 0.6 );
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hemiLight.color.setHSL( 0.6, 1, 0.6 );
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hemiLight.groundColor.setHSL( 0.095, 1, 0.75 );
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hemiLight.position.set( 0, 50, 0 );
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scene.add( hemiLight );
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const hemiLightHelper = new THREE.HemisphereLightHelper( hemiLight, 10 );
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scene.add( hemiLightHelper );
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//
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const dirLight = new THREE.DirectionalLight( 0xffffff, 1 );
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dirLight.color.setHSL( 0.1, 1, 0.95 );
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dirLight.position.set( - 1, 1.75, 1 );
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dirLight.position.multiplyScalar( 30 );
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scene.add( dirLight );
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dirLight.castShadow = true;
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dirLight.shadow.mapSize.width = 2048;
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dirLight.shadow.mapSize.height = 2048;
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const d = 50;
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dirLight.shadow.camera.left = - d;
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dirLight.shadow.camera.right = d;
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dirLight.shadow.camera.top = d;
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dirLight.shadow.camera.bottom = - d;
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dirLight.shadow.camera.far = 3500;
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dirLight.shadow.bias = - 0.0001;
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const dirLightHelper = new THREE.DirectionalLightHelper( dirLight, 10 );
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scene.add( dirLightHelper );
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// GROUND
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const groundGeo = new THREE.PlaneGeometry( 10000, 10000 );
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const groundMat = new THREE.MeshLambertMaterial( { color: 0xffffff } );
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groundMat.color.setHSL( 0.095, 1, 0.75 );
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const ground = new THREE.Mesh( groundGeo, groundMat );
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ground.position.y = - 33;
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ground.rotation.x = - Math.PI / 2;
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ground.receiveShadow = true;
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scene.add( ground );
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// SKYDOME
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const vertexShader = document.getElementById( 'vertexShader' ).textContent;
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const fragmentShader = document.getElementById( 'fragmentShader' ).textContent;
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const uniforms = {
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'topColor': { value: new THREE.Color( 0x0077ff ) },
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'bottomColor': { value: new THREE.Color( 0xffffff ) },
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'offset': { value: 33 },
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'exponent': { value: 0.6 }
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};
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uniforms[ 'topColor' ].value.copy( hemiLight.color );
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scene.fog.color.copy( uniforms[ 'bottomColor' ].value );
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const skyGeo = new THREE.SphereGeometry( 4000, 32, 15 );
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const skyMat = new THREE.ShaderMaterial( {
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uniforms: uniforms,
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vertexShader: vertexShader,
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fragmentShader: fragmentShader,
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side: THREE.BackSide
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} );
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const sky = new THREE.Mesh( skyGeo, skyMat );
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scene.add( sky );
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// MODEL
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const loader = new GLTFLoader();
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loader.load( 'models/gltf/Flamingo.glb', function ( gltf ) {
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const mesh = gltf.scene.children[ 0 ];
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const s = 0.35;
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mesh.scale.set( s, s, s );
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mesh.position.y = 15;
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mesh.rotation.y = - 1;
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mesh.castShadow = true;
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mesh.receiveShadow = true;
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scene.add( mesh );
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const mixer = new THREE.AnimationMixer( mesh );
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mixer.clipAction( gltf.animations[ 0 ] ).setDuration( 1 ).play();
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mixers.push( mixer );
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} );
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// RENDERER
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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renderer.outputEncoding = THREE.sRGBEncoding;
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renderer.shadowMap.enabled = true;
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// STATS
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stats = new Stats();
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container.appendChild( stats.dom );
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//
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window.addEventListener( 'resize', onWindowResize );
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const hemisphereButton = document.getElementById( 'hemisphereButton' );
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hemisphereButton.addEventListener( 'click', function () {
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hemiLight.visible = ! hemiLight.visible;
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hemiLightHelper.visible = ! hemiLightHelper.visible;
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} );
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const directionalButton = document.getElementById( 'directionalButton' );
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directionalButton.addEventListener( 'click', function () {
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dirLight.visible = ! dirLight.visible;
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dirLightHelper.visible = ! dirLightHelper.visible;
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} );
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}
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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render();
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stats.update();
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}
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function render() {
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const delta = clock.getDelta();
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for ( let i = 0; i < mixers.length; i ++ ) {
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mixers[ i ].update( delta );
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}
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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