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228 lines
6.5 KiB
228 lines
6.5 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 - teapot buffer geometry</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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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - the Utah Teapot<br />
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from <a href="https://www.udacity.com/course/interactive-3d-graphics--cs291" target="_blank" rel="noopener">Udacity Interactive 3D Graphics</a>
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</div>
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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 { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import { TeapotGeometry } from 'three/addons/geometries/TeapotGeometry.js';
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let camera, scene, renderer;
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let cameraControls;
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let effectController;
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const teapotSize = 300;
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let ambientLight, light;
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let tess = - 1; // force initialization
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let bBottom;
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let bLid;
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let bBody;
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let bFitLid;
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let bNonBlinn;
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let shading;
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let teapot, textureCube;
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const materials = {};
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init();
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render();
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function init() {
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const container = document.createElement( 'div' );
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document.body.appendChild( container );
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const canvasWidth = window.innerWidth;
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const canvasHeight = window.innerHeight;
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// CAMERA
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camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 80000 );
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camera.position.set( - 600, 550, 1300 );
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// LIGHTS
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ambientLight = new THREE.AmbientLight( 0x333333 );
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light = new THREE.DirectionalLight( 0xFFFFFF, 1.0 );
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light.position.set( 0.32, 0.39, 0.7 );
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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( canvasWidth, canvasHeight );
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renderer.outputEncoding = THREE.sRGBEncoding;
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container.appendChild( renderer.domElement );
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// EVENTS
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window.addEventListener( 'resize', onWindowResize );
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// CONTROLS
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cameraControls = new OrbitControls( camera, renderer.domElement );
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cameraControls.addEventListener( 'change', render );
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// TEXTURE MAP
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const textureMap = new THREE.TextureLoader().load( 'textures/uv_grid_opengl.jpg' );
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textureMap.wrapS = textureMap.wrapT = THREE.RepeatWrapping;
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textureMap.anisotropy = 16;
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textureMap.encoding = THREE.sRGBEncoding;
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// REFLECTION MAP
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const path = 'textures/cube/pisa/';
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const urls = [ 'px.png', 'nx.png', 'py.png', 'ny.png', 'pz.png', 'nz.png' ];
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textureCube = new THREE.CubeTextureLoader().setPath( path ).load( urls );
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textureCube.encoding = THREE.sRGBEncoding;
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materials[ 'wireframe' ] = new THREE.MeshBasicMaterial( { wireframe: true } );
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materials[ 'flat' ] = new THREE.MeshPhongMaterial( { specular: 0x000000, flatShading: true, side: THREE.DoubleSide } );
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materials[ 'smooth' ] = new THREE.MeshLambertMaterial( { side: THREE.DoubleSide } );
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materials[ 'glossy' ] = new THREE.MeshPhongMaterial( { side: THREE.DoubleSide } );
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materials[ 'textured' ] = new THREE.MeshPhongMaterial( { map: textureMap, side: THREE.DoubleSide } );
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materials[ 'reflective' ] = new THREE.MeshPhongMaterial( { envMap: textureCube, side: THREE.DoubleSide } );
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// scene itself
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xAAAAAA );
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scene.add( ambientLight );
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scene.add( light );
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// GUI
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setupGui();
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}
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// EVENT HANDLERS
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function onWindowResize() {
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const canvasWidth = window.innerWidth;
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const canvasHeight = window.innerHeight;
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renderer.setSize( canvasWidth, canvasHeight );
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camera.aspect = canvasWidth / canvasHeight;
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camera.updateProjectionMatrix();
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render();
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}
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function setupGui() {
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effectController = {
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newTess: 15,
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bottom: true,
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lid: true,
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body: true,
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fitLid: false,
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nonblinn: false,
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newShading: 'glossy'
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};
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const gui = new GUI();
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gui.add( effectController, 'newTess', [ 2, 3, 4, 5, 6, 8, 10, 15, 20, 30, 40, 50 ] ).name( 'Tessellation Level' ).onChange( render );
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gui.add( effectController, 'lid' ).name( 'display lid' ).onChange( render );
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gui.add( effectController, 'body' ).name( 'display body' ).onChange( render );
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gui.add( effectController, 'bottom' ).name( 'display bottom' ).onChange( render );
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gui.add( effectController, 'fitLid' ).name( 'snug lid' ).onChange( render );
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gui.add( effectController, 'nonblinn' ).name( 'original scale' ).onChange( render );
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gui.add( effectController, 'newShading', [ 'wireframe', 'flat', 'smooth', 'glossy', 'textured', 'reflective' ] ).name( 'Shading' ).onChange( render );
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}
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//
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function render() {
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if ( effectController.newTess !== tess ||
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effectController.bottom !== bBottom ||
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effectController.lid !== bLid ||
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effectController.body !== bBody ||
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effectController.fitLid !== bFitLid ||
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effectController.nonblinn !== bNonBlinn ||
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effectController.newShading !== shading ) {
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tess = effectController.newTess;
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bBottom = effectController.bottom;
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bLid = effectController.lid;
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bBody = effectController.body;
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bFitLid = effectController.fitLid;
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bNonBlinn = effectController.nonblinn;
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shading = effectController.newShading;
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createNewTeapot();
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}
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// skybox is rendered separately, so that it is always behind the teapot.
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if ( shading === 'reflective' ) {
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scene.background = textureCube;
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} else {
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scene.background = null;
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}
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renderer.render( scene, camera );
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}
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// Whenever the teapot changes, the scene is rebuilt from scratch (not much to it).
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function createNewTeapot() {
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if ( teapot !== undefined ) {
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teapot.geometry.dispose();
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scene.remove( teapot );
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}
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const geometry = new TeapotGeometry( teapotSize,
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tess,
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effectController.bottom,
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effectController.lid,
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effectController.body,
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effectController.fitLid,
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! effectController.nonblinn );
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teapot = new THREE.Mesh( geometry, materials[ shading ] );
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scene.add( teapot );
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}
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</script>
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</body>
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</html>
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