javascript
/
three.js
镜像来自 https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - materials - car</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">
		<style>
			body {
				color: #444;
			}
			a {
				color: #08f;
			}
		</style>
	</head>

	<body>
		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> car materials demo<br/>
			Ferrari 458 Italia model by <a href="https://sketchfab.com/models/57bf6cc56931426e87494f554df1dab6" target="_blank" rel="noopener">vicent091036</a>
			<br><br>
			<span>Body: <select id="body-mat"></select></span>
			<span>Details: <select id="rim-mat"></select></span>
			<span>Glass: <select id="glass-mat"></select></span>
			<br><br>
			<span>Follow camera: <input type="checkbox" id="camera-toggle"></span>
		</div>

		<div id="container"></div>

		<script type="module">

			import * as THREE from '../build/three.module.js';

			import Stats from './jsm/libs/stats.module.js';

			import { GLTFLoader } from './jsm/loaders/GLTFLoader.js';
			import { DRACOLoader } from './jsm/loaders/DRACOLoader.js';

			import { CarControls } from './jsm/misc/CarControls.js';

			import { RGBELoader } from './jsm/loaders/RGBELoader.js';

			import { PMREMGenerator } from './jsm/pmrem/PMREMGenerator.js';

			var camera, scene, renderer;
			var stats, carModel, materialsLib, envMap;

			var bodyMatSelect = document.getElementById( 'body-mat' );
			var rimMatSelect = document.getElementById( 'rim-mat' );
			var glassMatSelect = document.getElementById( 'glass-mat' );

			var followCamera = document.getElementById( 'camera-toggle' );

			var clock = new THREE.Clock();
			var carControls = new CarControls();
			carControls.turningRadius = 75;

			var carParts = {
				body: [],
				rims: [],
				glass: [],
			};

			var damping = 3.0;

			var cameraBack = new THREE.Object3D();
			cameraBack.position.set( 0, 2.5, 5 );

			var cameraTarget = new THREE.Vector3();

			function init() {

				var container = document.getElementById( 'container' );

				camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 0.1, 200 );
				camera.position.set( 3.25, 2.0, - 5 );
				camera.lookAt( 0, 0.25, 0 );

				scene = new THREE.Scene();
				// scene.fog = new THREE.Fog( 0xd7cbb1, 1, 80 );

				new RGBELoader()
					.setDataType( THREE.UnsignedByteType )
					.setPath( 'textures/hdr/' )
					.load( 'quarry_01_1k.hdr', function ( texture ) {

						var options = {
							minFilter: texture.minFilter,
							magFilter: texture.magFilter
						};

						var pmremGenerator = new PMREMGenerator( renderer );
						envMap = pmremGenerator.fromEquirectangular( texture ).texture;
						pmremGenerator.dispose();

						scene.background = envMap;

						//

						initCar();
						initMaterials();
						initMaterialSelectionMenus();

					} );

				var ground = new THREE.Mesh(
					new THREE.PlaneBufferGeometry( 400, 400 ),
					new THREE.MeshBasicMaterial( { color: 0x6e6a62, depthWrite: false } )
				);
				ground.rotation.x = - Math.PI / 2;
				ground.renderOrder = 1;
				scene.add( ground );

				var grid = new THREE.GridHelper( 400, 80, 0x000000, 0x000000 );
				grid.material.opacity = 0.2;
				grid.material.depthWrite = false;
				grid.material.transparent = true;
				scene.add( grid );

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				container.appendChild( renderer.domElement );

				renderer.gammaOutput = true;
				renderer.toneMapping = THREE.ACESFilmicToneMapping;
				renderer.toneMappingExposure = 1;

				stats = new Stats();
				container.appendChild( stats.dom );

				window.addEventListener( 'resize', onWindowResize, false );

				renderer.setAnimationLoop( render );

			}

			function initCar() {

				var dracoLoader = new DRACOLoader();
				dracoLoader.setDecoderPath( 'js/libs/draco/gltf/' );

				var loader = new GLTFLoader();
				loader.setDRACOLoader( dracoLoader );

				loader.load( 'models/gltf/ferrari.glb', function ( gltf ) {

					carModel = gltf.scene.children[ 0 ];

					carControls.setModel( carModel );

					carModel.add( cameraBack );

					carModel.traverse( function ( child ) {

						if ( child.isMesh ) {

							child.material.envMap = envMap;

						}

					} );

					// shadow
					var texture = new THREE.TextureLoader().load( 'models/gltf/ferrari_ao.png' );
					var shadow = new THREE.Mesh(
						new THREE.PlaneBufferGeometry( 0.655 * 4, 1.3 * 4 ),
						new THREE.MeshBasicMaterial( {
							map: texture, opacity: 0.7, transparent: true
						} )
					);
					shadow.rotation.x = - Math.PI / 2;
					shadow.renderOrder = 2;
					carModel.add( shadow );

					scene.add( carModel );

					// car parts for material selection
					carParts.body.push( carModel.getObjectByName( 'body' ) );

					carParts.rims.push(
						carModel.getObjectByName( 'rim_fl' ),
						carModel.getObjectByName( 'rim_fr' ),
						carModel.getObjectByName( 'rim_rr' ),
						carModel.getObjectByName( 'rim_rl' ),
						carModel.getObjectByName( 'trim' ),
					);

					carParts.glass.push(
						carModel.getObjectByName( 'glass' ),
					 );

					updateMaterials();

				} );

			}

			function initMaterials() {

				materialsLib = {

					main: [

						new THREE.MeshStandardMaterial( {
							color: 0xff4400, envMap: envMap, metalness: 1.0, roughness: 0.2, name: 'orange'
						} ),
						new THREE.MeshStandardMaterial( {
							color: 0x001166, envMap: envMap, metalness: 1.0, roughness: 0.2, name: 'blue'
						} ),
						new THREE.MeshStandardMaterial( {
							color: 0x990000, envMap: envMap, metalness: 1.0, roughness: 0.2, name: 'red'
						} ),
						new THREE.MeshStandardMaterial( {
							color: 0x000000, envMap: envMap, metalness: 1.0, roughness: 0.2, name: 'black'
						} ),
						new THREE.MeshStandardMaterial( {
							color: 0xffffff, envMap: envMap, metalness: 0.3, roughness: 0.2, name: 'white'
						} ),
						new THREE.MeshStandardMaterial( {
							color: 0xffffff, envMap: envMap, metalness: 1.0, roughness: 0.2, name: 'metallic'
						} ),

					],

					glass: [

						new THREE.MeshPhysicalMaterial( {
							color: 0xffffff, envMap: envMap, metalness: 1, roughness: 0, transparency: 1.0, transparent: true, name: 'clear'
						} ),
						new THREE.MeshPhysicalMaterial( {
							color: 0x000000, envMap: envMap, metalness: 1, roughness: 0, transparency: 0.7, transparent: true, name: 'smoked'
						} ),
						new THREE.MeshPhysicalMaterial( {
							color: 0x001133, envMap: envMap, metalness: 1, roughness: 0, transparency: 0.7, transparent: true, name: 'blue'
						} ),

					],

				};

			}

			function initMaterialSelectionMenus() {

				function addOption( name, menu ) {

					var option = document.createElement( 'option' );
					option.text = name;
					option.value = name;
					menu.add( option );

				}

				materialsLib.main.forEach( function ( material ) {

					addOption( material.name, bodyMatSelect );
					addOption( material.name, rimMatSelect );

				} );

				materialsLib.glass.forEach( function ( material ) {

					addOption( material.name, glassMatSelect );

				} );

				bodyMatSelect.selectedIndex = 3;
				rimMatSelect.selectedIndex = 5;
				glassMatSelect.selectedIndex = 0;

				bodyMatSelect.addEventListener( 'change', updateMaterials );
				rimMatSelect.addEventListener( 'change', updateMaterials );
				glassMatSelect.addEventListener( 'change', updateMaterials );

			}

			// set materials to the current values of the selection menus
			function updateMaterials() {

				var bodyMat = materialsLib.main[ bodyMatSelect.selectedIndex ];
				var rimMat = materialsLib.main[ rimMatSelect.selectedIndex ];
				var glassMat = materialsLib.glass[ glassMatSelect.selectedIndex ];

				carParts.body.forEach( part => part.material = bodyMat );
				carParts.rims.forEach( part => part.material = rimMat );
				carParts.glass.forEach( part => part.material = glassMat );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			function render() {

				var delta = clock.getDelta();

				if ( carModel ) {

					carControls.update( delta / 3 );

					if ( carModel.position.length() > 200 ) {

						carModel.position.set( 0, 0, 0 );
						carControls.speed = 0;

					}

					if ( followCamera.checked ) {

						cameraBack.getWorldPosition( cameraTarget );

					} else {

						cameraTarget.set( 3.25, 2.0, - 5 );

					}

					camera.position.lerp( cameraTarget, delta * damping );

					var position = carModel.position;

					camera.lookAt( position.x, position.y + 0.25, position.z );

				}

				renderer.render( scene, camera );

				stats.update();

			}

			init();

		</script>

	</body>
</html>