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459 lines
14 KiB
459 lines
14 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 - exporter - collada</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> webgl - exporter - collada
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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 { ColladaExporter } from 'three/addons/exporters/ColladaExporter.js';
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import { TeapotGeometry } from 'three/addons/geometries/TeapotGeometry.js';
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////////////////////////////////////////////////////////////////////////////////
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// Utah/Newell Teapot demo
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////////////////////////////////////////////////////////////////////////////////
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/*global window */
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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 = 100; // vertical height of the teapot is about 2x this, we scale it to millimeters.
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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 vertexColors;
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let wireMaterial, flatMaterial, gouraudMaterial, phongMaterial, texturedMaterial, normalMaterial, reflectiveMaterial;
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let teapot, textureCube;
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// allocate these just once
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const diffuseColor = new THREE.Color();
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const specularColor = new THREE.Color();
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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, 20000 );
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camera.position.set( - 150, 137.5, 325 );
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// LIGHTS
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ambientLight = new THREE.AmbientLight( 0x333333 ); // 0.2
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light = new THREE.DirectionalLight( 0xFFFFFF, 1.0 );
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// direction is set in GUI
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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 loader = new THREE.TextureLoader();
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const textureMap = loader.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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// NORMAL MAP
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const diffuseMap = loader.load( 'textures/floors/FloorsCheckerboard_S_Diffuse.jpg' );
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const normalMap = loader.load( 'textures/floors/FloorsCheckerboard_S_Normal.jpg' );
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// REFLECTION MAP
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const path = 'textures/cube/pisa/';
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const urls = [
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path + 'px.png', path + 'nx.png',
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path + 'py.png', path + 'ny.png',
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path + 'pz.png', path + 'nz.png'
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];
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textureCube = new THREE.CubeTextureLoader().load( urls );
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textureCube.encoding = THREE.sRGBEncoding;
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// MATERIALS
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const materialColor = new THREE.Color();
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materialColor.setRGB( 1.0, 1.0, 1.0 );
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wireMaterial = new THREE.MeshBasicMaterial( { color: 0xFFFFFF, wireframe: true } );
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flatMaterial = new THREE.MeshPhongMaterial( { color: materialColor, specular: 0x000000, flatShading: true, side: THREE.DoubleSide } );
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gouraudMaterial = new THREE.MeshLambertMaterial( { color: materialColor, side: THREE.DoubleSide } );
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phongMaterial = new THREE.MeshPhongMaterial( { color: materialColor, side: THREE.DoubleSide } );
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texturedMaterial = new THREE.MeshPhongMaterial( { color: materialColor, map: textureMap, side: THREE.DoubleSide } );
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normalMaterial = new THREE.MeshPhongMaterial( { color: materialColor, map: diffuseMap, normalMap: normalMap, side: THREE.DoubleSide } );
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reflectiveMaterial = new THREE.MeshPhongMaterial( { color: materialColor, 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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shininess: 40.0,
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ka: 0.17,
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kd: 0.51,
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ks: 0.2,
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metallic: true,
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hue: 0.121,
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saturation: 0.73,
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lightness: 0.66,
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lhue: 0.04,
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lsaturation: 0.01, // non-zero so that fractions will be shown
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llightness: 1.0,
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vertexColors: false,
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// bizarrely, if you initialize these with negative numbers, the sliders
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// will not show any decimal places.
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lx: 0.32,
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ly: 0.39,
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lz: 0.7,
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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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export: exportCollada
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};
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let h;
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const gui = new GUI();
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// material (attributes)
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h = gui.addFolder( 'Material control' );
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h.add( effectController, 'shininess', 1.0, 400.0, 1.0 ).name( 'shininess' ).onChange( render );
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h.add( effectController, 'kd', 0.0, 1.0, 0.025 ).name( 'diffuse strength' ).onChange( render );
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h.add( effectController, 'ks', 0.0, 1.0, 0.025 ).name( 'specular strength' ).onChange( render );
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h.add( effectController, 'metallic' ).onChange( render );
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// material (color)
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h = gui.addFolder( 'Material color' );
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h.add( effectController, 'hue', 0.0, 1.0, 0.025 ).name( 'hue' ).onChange( render );
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h.add( effectController, 'saturation', 0.0, 1.0, 0.025 ).name( 'saturation' ).onChange( render );
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h.add( effectController, 'lightness', 0.0, 1.0, 0.025 ).name( 'lightness' ).onChange( render );
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h.add( effectController, 'vertexColors' ).onChange( render );
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// light (point)
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h = gui.addFolder( 'Lighting' );
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h.add( effectController, 'lhue', 0.0, 1.0, 0.025 ).name( 'hue' ).onChange( render );
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h.add( effectController, 'lsaturation', 0.0, 1.0, 0.025 ).name( 'saturation' ).onChange( render );
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h.add( effectController, 'llightness', 0.0, 1.0, 0.025 ).name( 'lightness' ).onChange( render );
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h.add( effectController, 'ka', 0.0, 1.0, 0.025 ).name( 'ambient' ).onChange( render );
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// light (directional)
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h = gui.addFolder( 'Light direction' );
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h.add( effectController, 'lx', - 1.0, 1.0, 0.025 ).name( 'x' ).onChange( render );
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h.add( effectController, 'ly', - 1.0, 1.0, 0.025 ).name( 'y' ).onChange( render );
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h.add( effectController, 'lz', - 1.0, 1.0, 0.025 ).name( 'z' ).onChange( render );
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h = gui.addFolder( 'Tessellation control' );
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h.add( effectController, 'newTess', [ 2, 3, 4, 5, 6, 8, 10, 15, 20, 30, 40, 50 ] ).name( 'Tessellation Level' ).onChange( render );
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h.add( effectController, 'lid' ).name( 'display lid' ).onChange( render );
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h.add( effectController, 'body' ).name( 'display body' ).onChange( render );
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h.add( effectController, 'bottom' ).name( 'display bottom' ).onChange( render );
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h.add( effectController, 'fitLid' ).name( 'snug lid' ).onChange( render );
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h.add( effectController, 'nonblinn' ).name( 'original scale' ).onChange( render );
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// shading
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gui.add( effectController, 'newShading', [ 'wireframe', 'flat', 'smooth', 'glossy', 'textured', 'normal', 'reflective' ] ).name( 'Shading' ).onChange( render );
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h = gui.addFolder( 'Export' );
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h.add( effectController, 'export' ).name( 'Export Collada' );
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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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effectController.vertexColors !== vertexColors ) {
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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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vertexColors = effectController.vertexColors;
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createNewTeapot();
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}
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// We're a bit lazy here. We could check to see if any material attributes changed and update
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// only if they have. But, these calls are cheap enough and this is just a demo.
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phongMaterial.shininess = effectController.shininess;
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texturedMaterial.shininess = effectController.shininess;
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normalMaterial.shininess = effectController.shininess;
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diffuseColor.setHSL( effectController.hue, effectController.saturation, effectController.lightness );
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if ( effectController.metallic ) {
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// make colors match to give a more metallic look
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specularColor.copy( diffuseColor );
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} else {
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// more of a plastic look
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specularColor.setRGB( 1, 1, 1 );
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}
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diffuseColor.multiplyScalar( effectController.kd );
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flatMaterial.color.copy( diffuseColor );
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gouraudMaterial.color.copy( diffuseColor );
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phongMaterial.color.copy( diffuseColor );
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texturedMaterial.color.copy( diffuseColor );
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normalMaterial.color.copy( diffuseColor );
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specularColor.multiplyScalar( effectController.ks );
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phongMaterial.specular.copy( specularColor );
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texturedMaterial.specular.copy( specularColor );
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normalMaterial.specular.copy( specularColor );
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// Ambient's actually controlled by the light for this demo
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ambientLight.color.setHSL( effectController.hue, effectController.saturation, effectController.lightness * effectController.ka );
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light.position.set( effectController.lx, effectController.ly, effectController.lz );
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light.color.setHSL( effectController.lhue, effectController.lsaturation, effectController.llightness );
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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 teapotGeometry = 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(
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teapotGeometry,
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shading === 'wireframe' ? wireMaterial : (
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shading === 'flat' ? flatMaterial : (
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shading === 'smooth' ? gouraudMaterial : (
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shading === 'glossy' ? phongMaterial : (
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shading === 'textured' ? texturedMaterial : (
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shading === 'normal' ? normalMaterial : reflectiveMaterial ) ) ) ) ) ); // if no match, pick Phong
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|
||
|
|
if ( effectController.vertexColors ) {
|
||
|
|
|
||
|
|
teapot.geometry.computeBoundingBox();
|
||
|
|
const minY = teapot.geometry.boundingBox.min.y;
|
||
|
|
const maxY = teapot.geometry.boundingBox.max.y;
|
||
|
|
const sizeY = maxY - minY;
|
||
|
|
|
||
|
|
const colors = [];
|
||
|
|
const position = teapot.geometry.getAttribute( 'position' );
|
||
|
|
for ( let i = 0, l = position.count; i < l; i ++ ) {
|
||
|
|
|
||
|
|
const y = position.getY( i );
|
||
|
|
const r = ( y - minY ) / sizeY;
|
||
|
|
const b = 1.0 - r;
|
||
|
|
|
||
|
|
colors.push( r * 128, 0, b * 128 );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
teapot.geometry.setAttribute( 'color', new THREE.Uint8BufferAttribute( colors, 3, true ) );
|
||
|
|
teapot.material.vertexColors = true;
|
||
|
|
teapot.material.needsUpdate = true;
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
teapot.geometry.deleteAttribute( 'color' );
|
||
|
|
teapot.material.vertexColors = false;
|
||
|
|
teapot.material.needsUpdate = true;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
scene.add( teapot );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
const exporter = new ColladaExporter();
|
||
|
|
|
||
|
|
function exportCollada() {
|
||
|
|
|
||
|
|
const result = exporter.parse( teapot, undefined, { upAxis: 'Y_UP', unitName: 'millimeter', unitMeter: 0.001 } );
|
||
|
|
let materialType = 'Phong';
|
||
|
|
|
||
|
|
if ( shading === 'wireframe' ) {
|
||
|
|
|
||
|
|
materialType = 'Constant';
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( shading === 'smooth' ) {
|
||
|
|
|
||
|
|
materialType = 'Lambert';
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
saveString( result.data, 'teapot_' + shading + '_' + materialType + '.dae' );
|
||
|
|
|
||
|
|
result.textures.forEach( tex => {
|
||
|
|
|
||
|
|
saveArrayBuffer( tex.data, `${ tex.name }.${ tex.ext }` );
|
||
|
|
|
||
|
|
} );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function save( blob, filename ) {
|
||
|
|
|
||
|
|
link.href = URL.createObjectURL( blob );
|
||
|
|
link.download = filename;
|
||
|
|
link.click();
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function saveString( text, filename ) {
|
||
|
|
|
||
|
|
save( new Blob( [ text ], { type: 'text/plain' } ), filename );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function saveArrayBuffer( buffer, filename ) {
|
||
|
|
|
||
|
|
save( new Blob( [ buffer ], { type: 'application/octet-stream' } ), filename );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
const link = document.createElement( 'a' );
|
||
|
|
link.style.display = 'none';
|
||
|
|
document.body.appendChild( link );
|
||
|
|
|
||
|
|
</script>
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|