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170 lines
4.6 KiB
170 lines
4.6 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 - USDZ exporter</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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background-color: #eee;
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}
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#info {
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color: #222;
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}
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a {
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color: #00f
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}
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#button {
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position: absolute;
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bottom: 15px;
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left: calc(50% - 40px);
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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="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - USDZ exporter<br />
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Battle Damaged Sci-fi Helmet by
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<a href="https://sketchfab.com/theblueturtle_" target="_blank" rel="noopener">theblueturtle_</a>
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</div>
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<a id="link" rel="ar" href="" download="asset.usdz">
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<img id="button" width="100" src="files/arkit.png">
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</a>
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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 { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import { RoomEnvironment } from 'three/addons/environments/RoomEnvironment.js';
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import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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import { USDZExporter } from 'three/addons/exporters/USDZExporter.js';
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let camera, scene, renderer;
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init();
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render();
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function init() {
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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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renderer.toneMapping = THREE.ACESFilmicToneMapping;
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renderer.outputEncoding = THREE.sRGBEncoding;
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document.body.appendChild( renderer.domElement );
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camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.25, 20 );
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camera.position.set( - 2.5, 0.6, 3.0 );
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const pmremGenerator = new THREE.PMREMGenerator( renderer );
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xf0f0f0 );
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scene.environment = pmremGenerator.fromScene( new RoomEnvironment(), 0.04 ).texture;
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const loader = new GLTFLoader().setPath( 'models/gltf/DamagedHelmet/glTF/' );
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loader.load( 'DamagedHelmet.gltf', async function ( gltf ) {
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scene.add( gltf.scene );
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const shadowMesh = createSpotShadowMesh();
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shadowMesh.position.y = - 1.1;
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shadowMesh.position.z = - 0.25;
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shadowMesh.scale.setScalar( 2 );
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scene.add( shadowMesh );
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render();
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// USDZ
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const exporter = new USDZExporter();
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const arraybuffer = await exporter.parse( gltf.scene );
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const blob = new Blob( [ arraybuffer ], { type: 'application/octet-stream' } );
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const link = document.getElementById( 'link' );
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link.href = URL.createObjectURL( blob );
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} );
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.addEventListener( 'change', render ); // use if there is no animation loop
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controls.minDistance = 2;
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controls.maxDistance = 10;
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controls.target.set( 0, - 0.15, - 0.2 );
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controls.update();
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window.addEventListener( 'resize', onWindowResize );
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}
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function createSpotShadowMesh() {
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const canvas = document.createElement( 'canvas' );
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canvas.width = 128;
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canvas.height = 128;
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const context = canvas.getContext( '2d' );
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const gradient = context.createRadialGradient( canvas.width / 2, canvas.height / 2, 0, canvas.width / 2, canvas.height / 2, canvas.width / 2 );
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gradient.addColorStop( 0.1, 'rgba(130,130,130,1)' );
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gradient.addColorStop( 1, 'rgba(255,255,255,1)' );
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context.fillStyle = gradient;
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context.fillRect( 0, 0, canvas.width, canvas.height );
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const shadowTexture = new THREE.CanvasTexture( canvas );
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const geometry = new THREE.PlaneGeometry();
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const material = new THREE.MeshBasicMaterial( {
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map: shadowTexture, blending: THREE.MultiplyBlending, toneMapped: false
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} );
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const mesh = new THREE.Mesh( geometry, material );
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mesh.rotation.x = - Math.PI / 2;
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return mesh;
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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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render();
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}
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//
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function render() {
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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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