228 lines
5.9 KiB
HTML
228 lines
5.9 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - GLTFloader</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> - GLTFLoader<br />
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<a href="https://hdrihaven.com/hdri/?h=royal_esplanade" target="_blank" rel="noopener">Royal Esplanade</a> from <a href="https://hdrihaven.com/" target="_blank" rel="noopener">HDRI Haven</a>
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</div>
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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 { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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import { UltraHDRLoader } from 'three/addons/loaders/UltraHDRLoader.js';
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import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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let camera, scene, renderer, controls;
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let currentModel, mixer;
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let currentLoadId = 0;
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const timer = new THREE.Timer();
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init();
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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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camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.25, 20 );
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camera.position.set( - 1.8, 0.6, 2.7 );
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scene = new THREE.Scene();
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new UltraHDRLoader()
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.setPath( 'textures/equirectangular/' )
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.load( 'royal_esplanade_2k.hdr.jpg', function ( texture ) {
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texture.mapping = THREE.EquirectangularReflectionMapping;
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scene.background = texture;
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scene.environment = texture;
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render();
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// model
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fetch( 'https://raw.githubusercontent.com/KhronosGroup/glTF-Sample-Assets/main/Models/model-index.json' )
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.then( response => response.json() )
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.then( models => {
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const gui = new GUI();
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const modelNames = models.map( m => m.name );
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const params = { model: 'DamagedHelmet' };
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if ( ! modelNames.includes( params.model ) && modelNames.length > 0 ) {
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params.model = modelNames[ 0 ];
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}
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gui.add( params, 'model', modelNames ).onChange( name => {
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const modelInfo = models.find( m => m.name === name );
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loadModel( modelInfo );
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} );
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gui.add( scene, 'backgroundBlurriness', 0, 1 );
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const initialModel = models.find( m => m.name === params.model );
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if ( initialModel ) loadModel( initialModel );
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} );
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} );
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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.setAnimationLoop( render );
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renderer.toneMapping = THREE.ACESFilmicToneMapping;
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container.appendChild( renderer.domElement );
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controls = new OrbitControls( camera, renderer.domElement );
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controls.enableDamping = true;
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controls.minDistance = 2;
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controls.maxDistance = 10;
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controls.target.set( 0, 0, - 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 loadModel( modelInfo ) {
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const variants = modelInfo.variants;
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const variant = variants[ 'glTF-Binary' ] || variants[ 'glTF' ];
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const url = `https://raw.githubusercontent.com/KhronosGroup/glTF-Sample-Assets/main/Models/${ modelInfo.name }/${ variant.endsWith( '.glb' ) ? 'glTF-Binary' : 'glTF' }/${ variant }`;
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if ( currentModel ) {
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scene.remove( currentModel );
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currentModel = null;
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}
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if ( mixer ) {
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mixer.stopAllAction();
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mixer = null;
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}
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const loadId = ++ currentLoadId;
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const loader = new GLTFLoader();
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loader.load( url, async function ( gltf ) {
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if ( loadId !== currentLoadId ) return;
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currentModel = gltf.scene;
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// wait until the model can be added to the scene without blocking due to shader compilation
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await renderer.compileAsync( currentModel, camera, scene );
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if ( loadId !== currentLoadId ) return;
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scene.add( currentModel );
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fitCameraToSelection( camera, controls, currentModel );
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// animations
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if ( gltf.animations.length > 0 ) {
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mixer = new THREE.AnimationMixer( currentModel );
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for ( const animation of gltf.animations ) {
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mixer.clipAction( animation ).play();
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}
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}
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} );
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}
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function fitCameraToSelection( camera, controls, selection, fitOffset = 1.3 ) {
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const box = new THREE.Box3();
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box.setFromObject( selection );
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const size = box.getSize( new THREE.Vector3() );
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const center = box.getCenter( new THREE.Vector3() );
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const maxSize = Math.max( size.x, size.y, size.z );
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const fitHeightDistance = maxSize / ( 2 * Math.atan( Math.PI * camera.fov / 360 ) );
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// const fitWidthDistance = fitHeightDistance / camera.aspect;
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// const distance = fitOffset * Math.max( fitHeightDistance, fitWidthDistance );
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const distance = fitOffset * fitHeightDistance;
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const direction = controls.target.clone().sub( camera.position ).normalize().multiplyScalar( distance );
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controls.maxDistance = distance * 10;
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controls.minDistance = distance / 10;
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controls.target.copy( center );
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camera.near = distance / 100;
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camera.far = distance * 100;
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camera.updateProjectionMatrix();
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camera.position.copy( controls.target ).sub( direction );
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controls.update();
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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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timer.update();
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controls.update();
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if ( mixer ) mixer.update( timer.getDelta() );
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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> |