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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - shaders - sky sun shader</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 - sky + sun shader
- </div>
- <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 { Sky } from 'three/addons/objects/Sky.js';
- let camera, scene, renderer;
- let sky, sun;
- init();
- render();
- function initSky() {
- // Add Sky
- sky = new Sky();
- sky.scale.setScalar( 450000 );
- scene.add( sky );
- sun = new THREE.Vector3();
- /// GUI
- const effectController = {
- turbidity: 10,
- rayleigh: 3,
- mieCoefficient: 0.005,
- mieDirectionalG: 0.7,
- elevation: 2,
- azimuth: 180,
- exposure: renderer.toneMappingExposure
- };
- function guiChanged() {
- const uniforms = sky.material.uniforms;
- uniforms[ 'turbidity' ].value = effectController.turbidity;
- uniforms[ 'rayleigh' ].value = effectController.rayleigh;
- uniforms[ 'mieCoefficient' ].value = effectController.mieCoefficient;
- uniforms[ 'mieDirectionalG' ].value = effectController.mieDirectionalG;
- const phi = THREE.MathUtils.degToRad( 90 - effectController.elevation );
- const theta = THREE.MathUtils.degToRad( effectController.azimuth );
- sun.setFromSphericalCoords( 1, phi, theta );
- uniforms[ 'sunPosition' ].value.copy( sun );
- renderer.toneMappingExposure = effectController.exposure;
- renderer.render( scene, camera );
- }
- const gui = new GUI();
- gui.add( effectController, 'turbidity', 0.0, 20.0, 0.1 ).onChange( guiChanged );
- gui.add( effectController, 'rayleigh', 0.0, 4, 0.001 ).onChange( guiChanged );
- gui.add( effectController, 'mieCoefficient', 0.0, 0.1, 0.001 ).onChange( guiChanged );
- gui.add( effectController, 'mieDirectionalG', 0.0, 1, 0.001 ).onChange( guiChanged );
- gui.add( effectController, 'elevation', 0, 90, 0.1 ).onChange( guiChanged );
- gui.add( effectController, 'azimuth', - 180, 180, 0.1 ).onChange( guiChanged );
- gui.add( effectController, 'exposure', 0, 1, 0.0001 ).onChange( guiChanged );
- guiChanged();
- }
- function init() {
- camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 100, 2000000 );
- camera.position.set( 0, 100, 2000 );
- scene = new THREE.Scene();
- const helper = new THREE.GridHelper( 10000, 2, 0xffffff, 0xffffff );
- scene.add( helper );
- renderer = new THREE.WebGLRenderer();
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.toneMapping = THREE.ACESFilmicToneMapping;
- renderer.toneMappingExposure = 0.5;
- document.body.appendChild( renderer.domElement );
- const controls = new OrbitControls( camera, renderer.domElement );
- controls.addEventListener( 'change', render );
- //controls.maxPolarAngle = Math.PI / 2;
- controls.enableZoom = false;
- controls.enablePan = false;
- initSky();
- window.addEventListener( 'resize', onWindowResize );
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- render();
- }
- function render() {
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
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