samien
/
three.js
mirror de https://github.com/mrdoob/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - lights - rect area light</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">
	</head>
	<body>

		<div id="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - RectAreaLight with texture map<br/>
		</div>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.module.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';

			import Stats from 'three/addons/libs/stats.module.js';
			import { GUI } from 'three/addons/libs/lil-gui.module.min.js';

			import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
			import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
			import { DRACOLoader } from 'three/addons/loaders/DRACOLoader.js';
			import { RectAreaLightHelper } from 'three/addons/helpers/RectAreaLightHelper.js';
			import { RectAreaLightUniformsLib } from 'three/addons/lights/RectAreaLightUniformsLib.js';

			let renderer, scene, camera, controls;
			let stats, carModel, bodyMaterial, glassMaterial;

			init();

			function init() {

				renderer = new THREE.WebGLRenderer( { antialias: true, outputBufferType: THREE.HalfFloatType } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( animation );
				renderer.toneMapping = THREE.NeutralTonemapping;
				document.body.appendChild( renderer.domElement );

				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 1000 );
				camera.position.set( - 15, 5, - 5 );

				scene = new THREE.Scene();

				RectAreaLightUniformsLib.init();

				// Create video element for center light
				const video = document.createElement( 'video' );
				video.crossOrigin = 'anonymous';
				video.src = 'textures/veo-oledtv.mp4';
				video.loop = true;
				video.muted = true;
				video.playsInline = true;
				video.autoplay = true;
				video.play();

				const videoTexture = new THREE.VideoTexture( video );
				videoTexture.colorSpace = THREE.SRGBColorSpace;

				const rectLight = new THREE.RectAreaLight( 0xffffff, 5, 12, 8 );
				rectLight.map = videoTexture;
				// rectLight.map = new THREE.TextureLoader().load( 'textures/uv_grid_opengl.jpg' );
				rectLight.map.generateMipmaps = true;
				rectLight.map.minFilter = THREE.LinearMipmapLinearFilter;
				rectLight.position.set( 0, 5, 5 );
				scene.add( rectLight );

				scene.add( new RectAreaLightHelper( rectLight ) );

				const geoFloor = new THREE.BoxGeometry( 2000, 0.1, 2000 );
				const matStdFloor = new THREE.MeshStandardMaterial( { color: 0x444444 } );
				matStdFloor.roughnessMap = createCheckerTexture( 400 );
				const mshStdFloor = new THREE.Mesh( geoFloor, matStdFloor );
				scene.add( mshStdFloor );

				// Car shadow (AO plane)
				const aoTexture = new THREE.TextureLoader().load( 'models/gltf/ferrari_ao.png' );
				const shadowPlane = new THREE.Mesh(
					new THREE.PlaneGeometry( 256, 512 ),
					new THREE.MeshBasicMaterial( {
						map: aoTexture,
						blending: THREE.MultiplyBlending,
						depthWrite: false,
						transparent: true,
						premultipliedAlpha: true
					} )
				);
				shadowPlane.rotation.x = - Math.PI / 2;
				shadowPlane.rotation.z = Math.PI / 2;
				shadowPlane.position.y = 0.06;
				shadowPlane.scale.setScalar( 0.031 );
				scene.add( shadowPlane );

				// Load car model
				bodyMaterial = new THREE.MeshStandardMaterial( {
					color: 0xff4400,
					roughness: 0.2,
					metalness: 0
				} );
				glassMaterial = new THREE.MeshStandardMaterial( {
					color: 0xffffff,
					roughness: 0,
					metalness: 0,
					transparent: true,
					premultipliedAlpha: true,
					opacity: 0.3
				} );

				const dracoLoader = new DRACOLoader();
				dracoLoader.setDecoderPath( 'jsm/libs/draco/gltf/' );

				const loader = new GLTFLoader();
				loader.setDRACOLoader( dracoLoader );
				loader.load( 'models/gltf/ferrari.glb', function ( gltf ) {

					carModel = gltf.scene;
					carModel.rotation.y = Math.PI / 2;
					carModel.scale.setScalar( 3 );
					carModel.position.set( 0, 0, 0 );

					carModel.traverse( function ( child ) {

						if ( child.isMesh ) {

							// Replace car body material
							if ( child.name === 'body' ) {

								child.material = bodyMaterial;

							}

							// Replace glass material with transmissive material
							if ( child.name === 'glass' ) {

								child.material = glassMaterial;

							}

						}

					} );

					scene.add( carModel );

				} );

				controls = new OrbitControls( camera, renderer.domElement );
				controls.target.set( 0, 2, 3 );
				controls.enableDamping = true;
				controls.update();

				//

				window.addEventListener( 'resize', onWindowResize );

				stats = new Stats();
				document.body.appendChild( stats.dom );

				const gui = new GUI();
				gui.add( rectLight, 'intensity', 0, 20 ).name( 'Light Intensity' );
				gui.add( matStdFloor, 'roughness', 0, 1 ).name( 'Floor Roughness' );
				gui.add( matStdFloor, 'metalness', 0, 1 ).name( 'Floor Metalness' );
				gui.add( bodyMaterial, 'roughness', 0, 1 ).name( 'Car Roughness' );
				gui.add( bodyMaterial, 'metalness', 0, 1 ).name( 'Car Metalness' );
				gui.add( glassMaterial, 'opacity', 0, 1 ).name( 'Glass Opacity' );
				gui.add( glassMaterial, 'roughness', 0, 1 ).name( 'Glass Roughness' );

			}

			function createCheckerTexture( repeat = 1 ) {

				const canvas = document.createElement( 'canvas' );
				canvas.width = 2;
				canvas.height = 2;

				const ctx = canvas.getContext( '2d' );
				ctx.fillStyle = '#000';
				ctx.fillRect( 0, 0, 2, 2 );
				ctx.fillStyle = '#fff';
				ctx.fillRect( 0, 0, 1, 1 );
				ctx.fillRect( 1, 1, 1, 1 );

				const texture = new THREE.CanvasTexture( canvas );
				texture.repeat.set( repeat, repeat );
				texture.magFilter = THREE.NearestFilter;
				texture.wrapS = THREE.RepeatWrapping;
				texture.wrapT = THREE.RepeatWrapping;

				return texture;

			}

			function onWindowResize() {

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

			}

			function animation() {

				controls.update();

				renderer.render( scene, camera );

				stats.update();

			}

		</script>
	</body>
</html>