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176 lines
4.0 KiB
176 lines
4.0 KiB
2 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 - materials - lightmap</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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</head>
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<body>
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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 { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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const SCREEN_WIDTH = window.innerWidth;
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const SCREEN_HEIGHT = window.innerHeight;
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let container, stats;
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let camera, scene, renderer;
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await init();
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animate();
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async function init() {
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container = document.createElement( 'div' );
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document.body.appendChild( container );
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// CAMERA
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camera = new THREE.PerspectiveCamera( 40, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 10000 );
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camera.position.set( 700, 200, - 500 );
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// SCENE
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scene = new THREE.Scene();
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// LIGHTS
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const light = new THREE.DirectionalLight( 0xaabbff, 0.3 );
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light.position.x = 300;
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light.position.y = 250;
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light.position.z = - 500;
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scene.add( light );
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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: 400 },
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exponent: { value: 0.6 }
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};
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uniforms.topColor.value.copy( light.color );
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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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// 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( SCREEN_WIDTH, SCREEN_HEIGHT );
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container.appendChild( renderer.domElement );
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renderer.outputEncoding = THREE.sRGBEncoding;
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// CONTROLS
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.maxPolarAngle = 0.9 * Math.PI / 2;
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controls.enableZoom = false;
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// STATS
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stats = new Stats();
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container.appendChild( stats.dom );
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// MODEL
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const loader = new THREE.ObjectLoader();
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const object = await loader.loadAsync( 'models/json/lightmap/lightmap.json' );
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scene.add( object );
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//
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window.addEventListener( 'resize', onWindowResize );
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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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renderer.render( scene, camera );
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stats.update();
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}
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</script>
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</body>
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</html>
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