javascript
/
three.js
mirror de https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - materials</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="container"></div>
		<div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - Phong Material Variantions by <a href="http://clara.io/" target="_blank" rel="noopener">Ben Houston</a>.</div>

		<!-- Import maps polyfill -->
		<!-- Remove this when import maps will be widely supported -->
		<script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>

		<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 { OrbitControls } from 'three/addons/controls/OrbitControls.js';
			import { FontLoader } from 'three/addons/loaders/FontLoader.js';
			import { TextGeometry } from 'three/addons/geometries/TextGeometry.js';

			THREE.ColorManagement.enabled = false; // TODO: Consider enabling color management.

			let container, stats;

			let camera, scene, renderer;
			let particleLight;

			const loader = new FontLoader();
			loader.load( 'fonts/gentilis_regular.typeface.json', function ( font ) {

				init( font );
				animate();

			} );

			function init( font ) {

				container = document.createElement( 'div' );
				document.body.appendChild( container );

				camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 2500 );
				camera.position.set( 0.0, 400, 400 * 3.5 );

				//

				const reflectionCube = new THREE.CubeTextureLoader()
					.setPath( 'textures/cube/SwedishRoyalCastle/' )
					.load( [ 'px.jpg', 'nx.jpg', 'py.jpg', 'ny.jpg', 'pz.jpg', 'nz.jpg' ] );
				reflectionCube.colorSpace = THREE.SRGBColorSpace;

				scene = new THREE.Scene();
				scene.background = reflectionCube;

				// Materials

				let imgTexture = new THREE.TextureLoader().load( 'textures/planets/moon_1024.jpg' );
				imgTexture.wrapS = imgTexture.wrapT = THREE.RepeatWrapping;
				imgTexture.colorSpace = THREE.SRGBColorSpace;
				imgTexture.anisotropy = 16;
				imgTexture = null;

				const bumpScale = 1;
				const cubeWidth = 400;
				const numberOfSphersPerSide = 5;
				const sphereRadius = ( cubeWidth / numberOfSphersPerSide ) * 0.8 * 0.5;
				const stepSize = 1.0 / numberOfSphersPerSide;

				const geometry = new THREE.SphereGeometry( sphereRadius, 32, 16 );

				for ( let alpha = 0, alphaIndex = 0; alpha <= 1.0; alpha += stepSize, alphaIndex ++ ) {

					const specularShininess = Math.pow( 2, alpha * 10 );

					for ( let beta = 0; beta <= 1.0; beta += stepSize ) {

						const specularColor = new THREE.Color( beta * 0.2, beta * 0.2, beta * 0.2 );

						for ( let gamma = 0; gamma <= 1.0; gamma += stepSize ) {

							// basic monochromatic energy preservation
							const diffuseColor = new THREE.Color().setHSL( alpha, 0.5, gamma * 0.5 + 0.1 ).multiplyScalar( 1 - beta * 0.2 );

							const material = new THREE.MeshPhongMaterial( {
								map: imgTexture,
								bumpMap: imgTexture,
								bumpScale: bumpScale,
								color: diffuseColor,
								specular: specularColor,
								reflectivity: beta,
								shininess: specularShininess,
								envMap: alphaIndex % 2 === 0 ? null : reflectionCube
							} );

							const mesh = new THREE.Mesh( geometry, material );

							mesh.position.x = alpha * 400 - 200;
							mesh.position.y = beta * 400 - 200;
							mesh.position.z = gamma * 400 - 200;

							scene.add( mesh );

						}

					}

				}

				function addLabel( name, location ) {

					const textGeo = new TextGeometry( name, {

						font: font,

						size: 20,
						height: 1,
						curveSegments: 1

					} );

					const textMaterial = new THREE.MeshBasicMaterial( { color: 0xffffff } );
					const textMesh = new THREE.Mesh( textGeo, textMaterial );
					textMesh.position.copy( location );
					scene.add( textMesh );

				}

				addLabel( '-shininess', new THREE.Vector3( - 350, 0, 0 ) );
				addLabel( '+shininess', new THREE.Vector3( 350, 0, 0 ) );

				addLabel( '-specular, -reflectivity', new THREE.Vector3( 0, - 300, 0 ) );
				addLabel( '+specular, +reflectivity', new THREE.Vector3( 0, 300, 0 ) );

				addLabel( '-diffuse', new THREE.Vector3( 0, 0, - 300 ) );
				addLabel( '+diffuse', new THREE.Vector3( 0, 0, 300 ) );

				particleLight = new THREE.Mesh( new THREE.SphereGeometry( 4, 8, 8 ), new THREE.MeshBasicMaterial( { color: 0xffffff } ) );
				scene.add( particleLight );

				// Lights

				scene.add( new THREE.AmbientLight( 0x222222 ) );

				const directionalLight = new THREE.DirectionalLight( 0xffffff, 1 );
				directionalLight.position.set( 1, 1, 1 ).normalize();
				scene.add( directionalLight );

				const pointLight = new THREE.PointLight( 0xffffff, 2, 800 );
				particleLight.add( pointLight );

				//

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

				//

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

				const controls = new OrbitControls( camera, renderer.domElement );
				controls.minDistance = 200;
				controls.maxDistance = 2000;

				window.addEventListener( 'resize', onWindowResize );

			}

			function onWindowResize() {

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

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

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				stats.begin();
				render();
				stats.end();

			}

			function render() {

				const timer = Date.now() * 0.00025;

				//camera.position.x = Math.cos( timer ) * 800;
				//camera.position.z = Math.sin( timer ) * 800;

				camera.lookAt( scene.position );

				particleLight.position.x = Math.sin( timer * 7 ) * 300;
				particleLight.position.y = Math.cos( timer * 5 ) * 400;
				particleLight.position.z = Math.cos( timer * 3 ) * 300;

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>