javascript
/
three.js
spiegel van 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">
		<style>
			body {
				font-family: Monospace;
				background-color: #000;
				color: #000;
				margin: 0px;
				overflow: hidden;
			}
			#info {
				position: absolute;
				top: 10px;
				width: 100%;
				text-align: center;
				z-index: 100;
			}
			#info a {
				color: blue;
				font-weight: bold;
			}
		</style>
	</head>

	<body>
		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> car materials demo :
			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>Rims / Trim: <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 src="../build/three.js"></script>

		<script src="js/loaders/DRACOLoader.js"></script>
		<script src="js/loaders/GLTFLoader.js"></script>

		<script src="js/Car.js"></script>

		<script src="js/WebGL.js"></script>
		<script src="js/libs/stats.min.js"></script>

		<script>

			if ( WEBGL.isWebGLAvailable() === false ) {

				document.body.appendChild( WEBGL.getWebGLErrorMessage() );

			}

			var camera, scene, renderer, 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' );
			followCamera.addEventListener( 'change', onFollowCameraToggle );

			var lightHolder = new THREE.Group();
			var clock = new THREE.Clock();
			var car = new THREE.Car();
			car.turningRadius = 75;

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

			var damping = 5.0;
			var distance = 5;
			var cameraTarget = new THREE.Vector3();
			var origin = new THREE.Vector3();

			function init() {

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

				camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.1, 200 );
				camera.position.set( 3.25, 2.0, -5 );

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

				envMap = new THREE.CubeTextureLoader()
					.setPath( 'textures/cube/skyboxsun25deg/')
					.load( [ 'px.jpg', 'nx.jpg', 'py.jpg', 'ny.jpg', 'pz.jpg', 'nz.jpg' ] );

				scene.background = envMap;

				var ground = new THREE.Mesh(
					new THREE.PlaneBufferGeometry( 2400, 2400 ),
					new THREE.ShadowMaterial( { color: 0x000000, opacity: 0.15, depthWrite: false }
				) );
				ground.rotation.x = - Math.PI / 2;
				ground.receiveShadow = true;
				ground.renderOrder = 1;
				scene.add( ground );

				var grid = new THREE.GridHelper( 400, 40, 0x000000, 0x000000 );
				grid.material.opacity = 0.2;
				grid.material.depthWrite = false;
				grid.material.transparent = true;
				scene.add( grid );

				var hemiLight = new THREE.HemisphereLight( 0x7c849b, 0xd7cbb1, 0.1 );
				hemiLight.position.set( 0, 1, 0 );
				scene.add( hemiLight );

				var shadowLight  = new THREE.DirectionalLight( 0xffffee, 0.1 );
				shadowLight.position.set( -1.5, 1.25, -1.5 );
				shadowLight.castShadow = true;
				shadowLight.shadow.width = 512;
				shadowLight.shadow.height = 512;
				shadowLight.shadow.camera.top = 2;
				shadowLight.shadow.camera.bottom = -2;
				shadowLight.shadow.camera.left = -2.5;
				shadowLight.shadow.camera.right = 2.5;
				shadowLight.shadow.camera.far = 5.75;
				shadowLight.shadow.bias = -0.025;

				lightHolder.add( shadowLight, shadowLight.target );

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.gammaOutput = true;
				renderer.shadowMap.enabled = true;
				renderer.setSize( window.innerWidth, window.innerHeight );

				container.appendChild( renderer.domElement );

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

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

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

				renderer.setAnimationLoop( function() {

					update();

					renderer.render( scene, camera );

				} );

			}

			function initCar() {

				THREE.DRACOLoader.setDecoderPath( 'js/libs/draco/gltf/' );

				var loader = new THREE.GLTFLoader();
				loader.setDRACOLoader( new THREE.DRACOLoader() );

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

					carModel = gltf.scene.children[ 0 ];

					// add lightHolder to car so that the shadow will track the car as it moves
					carModel.add( lightHolder );

					car.setModel( carModel );

					carModel.traverse( function ( child ) {

						if ( child.isMesh  ) {

							child.castShadow = true;
							child.receiveShadow = true;
							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 ).rotateX( - Math.PI / 2 ),
						new THREE.MeshBasicMaterial( { map: texture, opacity: 0.8, transparent: true } )
					);
					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: 0.9, roughness: 0.2, name: 'orange' } ),
						new THREE.MeshStandardMaterial( { color: 0x001166, envMap: envMap, metalness: 0.9, roughness: 0.2, name: 'blue' } ),
						new THREE.MeshStandardMaterial( { color: 0x990000, envMap: envMap, metalness: 0.9, roughness: 0.2, name: 'red' } ),
						new THREE.MeshStandardMaterial( { color: 0x000000, envMap: envMap, metalness: 0.9, roughness: 0.5, name: 'black' } ),
						new THREE.MeshStandardMaterial( { color: 0xffffff, envMap: envMap, metalness: 0.9, roughness: 0.5, name: 'white' } ),
						new THREE.MeshStandardMaterial( { color: 0x555555, envMap: envMap, envMapIntensity: 2.0, metalness: 1.0, roughness: 0.2, name: 'metallic' } ),

					],

					glass: [

						new THREE.MeshStandardMaterial( { color: 0xffffff, envMap: envMap, metalness: 0.9, roughness: 0.1, opacity: 0.15, transparent: true, premultipliedAlpha: true, name: 'clear' } ),
						new THREE.MeshStandardMaterial( { color: 0x000000, envMap: envMap, metalness: 0.9, roughness: 0.1, opacity: 0.15, transparent: true, premultipliedAlpha: true, name: 'smoked' } ),
						new THREE.MeshStandardMaterial( { color: 0x001133, envMap: envMap, metalness: 0.9, roughness: 0.1, opacity: 0.15, transparent: true, premultipliedAlpha: 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 = 2;
				rimMatSelect.selectedIndex = 4;
				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( function ( part ) { part.material = bodyMat; } );
				carParts.rims.forEach( function ( part ) { part.material = rimMat; } );
				carParts.glass.forEach( function ( part ) { part.material = glassMat; } );

			}

			function onWindowResize() {

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

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

			}

			function onFollowCameraToggle() {

				carModel.position.copy( origin );

			}

			function update() {

				var delta = clock.getDelta();

				if ( carModel ) {

					car.update( delta / 3 );

					resetPosition();

					// keep the light (and shadow) pointing in the same direction as the car rotates
					lightHolder.rotation.y = -carModel.rotation.y;

					if ( followCamera.checked ) {

						carModel.getWorldPosition( cameraTarget );
						cameraTarget.y = 2.5;
						cameraTarget.z += distance;

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

					}

					camera.lookAt( carModel.position );

				}

				stats.update();

			}

			function resetPosition() {

				if ( carModel.position.distanceTo( origin ) > 200 ) {

					carModel.position.copy( origin );
					car.speed = 0;

				}

			}

			init();

		</script>

	</body>
</html>