javascript
/
three.js
zrcadlo 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="http://threejs.org" target="_blank" rel="noopener">three.js</a> - Standard Material Variations by <a href="http://clara.io/" target="_blank" rel="noopener">Ben Houston</a>.<br/><br/>
		Note: Every second sphere has an IBL environment map on it.</div>

		<script type="module">

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

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

			import { OrbitControls } from './jsm/controls/OrbitControls.js';
			import { RGBELoader } from './jsm/loaders/RGBELoader.js';
			import { PMREMGenerator } from './jsm/pmrem/PMREMGenerator.js';

			var container, stats;

			var camera, scene, renderer;
			var particleLight;

			var loader = new THREE.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, 2000 );
				camera.position.set( 0.0, 400, 400 * 3.5 );

				scene = new THREE.Scene();

				var hdrCubeRenderTarget = null;

				// Materials

				var imgTexture = new THREE.TextureLoader().load( "textures/planets/moon_1024.jpg" );
				imgTexture.wrapS = imgTexture.wrapT = THREE.RepeatWrapping;
				imgTexture.anisotropy = 16;
				imgTexture = null;

				new RGBELoader()
					.setDataType( THREE.UnsignedByteType )
					.setPath( 'textures/equirectangular/' )
					.load( 'pedestrian_overpass_1k.hdr', function ( hdrEquirect ) {

						hdrCubeRenderTarget = pmremGenerator.fromEquirectangular( hdrEquirect );
						hdrEquirect.dispose();
						pmremGenerator.dispose();

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

						var geometry = new THREE.SphereBufferGeometry( sphereRadius, 32, 16 );

						var index = 0;

						for ( var alpha = 0; alpha <= 1.0; alpha += stepSize ) {

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

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

									// basic monochromatic energy preservation
									var diffuseColor = new THREE.Color().setHSL( alpha, 0.5, gamma * 0.5 + 0.1 );

									var material = new THREE.MeshStandardMaterial( {
										map: imgTexture,
										bumpMap: imgTexture,
										bumpScale: bumpScale,
										color: diffuseColor,
										metalness: beta,
										roughness: 1.0 - alpha,
										envMap: index % 2 === 0 ? null : hdrCubeRenderTarget.texture
									} );

									index ++;

									var 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 );

								}

							}

							index ++;

						}

						scene.background = hdrCubeRenderTarget.texture;

					} );

				function addLabel( name, location ) {

					var textGeo = new THREE.TextBufferGeometry( name, {

						font: font,

						size: 20,
						height: 1,
						curveSegments: 1

					} );

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

				}

				addLabel( "+roughness", new THREE.Vector3( - 350, 0, 0 ) );
				addLabel( "-roughness", new THREE.Vector3( 350, 0, 0 ) );

				addLabel( "-metalness", new THREE.Vector3( 0, - 300, 0 ) );
				addLabel( "+metalness", 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.SphereBufferGeometry( 4, 8, 8 ), new THREE.MeshBasicMaterial( { color: 0xffffff } ) );
				scene.add( particleLight );

				// Lights

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

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

				var 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 );

				renderer.outputEncoding = THREE.sRGBEncoding;
				renderer.toneMapping = THREE.Uncharted2ToneMapping;
				renderer.toneMappingExposure = 0.75;

				//

				var pmremGenerator = new PMREMGenerator( renderer );
				pmremGenerator.compileEquirectangularShader();

				//

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

				var controls = new OrbitControls( camera, renderer.domElement );

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

			}

			function onWindowResize() {

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

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

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				var 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>