javascript
/
three.js
огледало од https://github.com/tazdij/three.js.git


			
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>threejs webgl - materials - hdr environment mapping</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">threejs</a> - Standard Material Reflectivity (reflectance at F0)<br/>
			example by <a href="http://clara.io/" target="_blank" rel="noopener">Ben Houston</a>.
		</div>

		<script type="module">

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

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

			import { GUI } from './jsm/libs/dat.gui.module.js';
			import { OrbitControls } from './jsm/controls/OrbitControls.js';
			import { OBJLoader } from './jsm/loaders/OBJLoader.js';
			import { HDRCubeTextureLoader } from './jsm/loaders/HDRCubeTextureLoader.js';
			import { PMREMGenerator } from './jsm/pmrem/PMREMGenerator.js';
			import { PMREMCubeUVPacker } from './jsm/pmrem/PMREMCubeUVPacker.js';

			var container, stats;
			var params = {
				projection: 'normal',
				autoRotate: true,
				reflectivity: 1.0,
				background: false,
				exposure: 1.0,
				gemColor: 'Green'
			};
			var camera, scene, renderer, objects = [];
			var gemBackMaterial, gemFrontMaterial;
			var hdrCubeRenderTarget;

			init();
			animate();

			function init() {

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

				camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 2000 );
				camera.position.set( 0.0, - 10, 20 * 3.5 );

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0x000000 );

				renderer = new THREE.WebGLRenderer( { antialias: true } );

				gemBackMaterial = new THREE.MeshPhysicalMaterial( {
					map: null,
					color: 0x0000ff,
					metalness: 1.0,
					roughness: 0,
					opacity: 0.5,
					side: THREE.BackSide,
					transparent: true,
					envMapIntensity: 5,
					premultipliedAlpha: true
					// TODO: Add custom blend mode that modulates background color by this materials color.
				} );

				gemFrontMaterial = new THREE.MeshPhysicalMaterial( {
					map: null,
					color: 0x0000ff,
					metalness: 0.0,
					roughness: 0,
					opacity: 0.15,
					side: THREE.FrontSide,
					transparent: true,
					envMapIntensity: 5,
					premultipliedAlpha: true
				} );

				var manager = new THREE.LoadingManager();
				manager.onProgress = function ( item, loaded, total ) {

					console.log( item, loaded, total );

				};

				var loader = new OBJLoader( manager );
				loader.load( 'models/obj/emerald.obj', function ( object ) {

					object.traverse( function ( child ) {

						if ( child instanceof THREE.Mesh ) {

							child.material = gemBackMaterial;
							var second = child.clone();
							second.material = gemFrontMaterial;

							var parent = new THREE.Group();
							parent.add( second );
							parent.add( child );
							scene.add( parent );

							objects.push( parent );

						}

					} );


				} );

				var genCubeUrls = function ( prefix, postfix ) {

					return [
						prefix + 'px' + postfix, prefix + 'nx' + postfix,
						prefix + 'py' + postfix, prefix + 'ny' + postfix,
						prefix + 'pz' + postfix, prefix + 'nz' + postfix
					];

	};

				var hdrUrls = genCubeUrls( "./textures/cube/pisaHDR/", ".hdr" );

				new HDRCubeTextureLoader()
					.setDataType( THREE.UnsignedByteType )
					.load( hdrUrls, function ( hdrCubeMap ) {

						var pmremGenerator = new PMREMGenerator( hdrCubeMap );
						pmremGenerator.update( renderer );

						var pmremCubeUVPacker = new PMREMCubeUVPacker( pmremGenerator.cubeLods );
						pmremCubeUVPacker.update( renderer );

						hdrCubeRenderTarget = pmremCubeUVPacker.CubeUVRenderTarget;

						gemFrontMaterial.envMap = gemBackMaterial.envMap = hdrCubeRenderTarget.texture;
						gemFrontMaterial.needsUpdate = gemBackMaterial.needsUpdate = true;

						hdrCubeMap.dispose();
						pmremGenerator.dispose();
						pmremCubeUVPacker.dispose();

					} );


				// Lights

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

				var pointLight1 = new THREE.PointLight( 0xffffff );
				pointLight1.position.set( 150, 10, 0 );
				pointLight1.castShadow = false;
				scene.add( pointLight1 );

				var pointLight2 = new THREE.PointLight( 0xffffff );
				pointLight2.position.set( - 150, 0, 0 );
				scene.add( pointLight2 );

				var pointLight3 = new THREE.PointLight( 0xffffff );
				pointLight3.position.set( 0, - 10, - 150 );
				scene.add( pointLight3 );

				var pointLight4 = new THREE.PointLight( 0xffffff );
				pointLight4.position.set( 0, 0, 150 );
				scene.add( pointLight4 );

				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.shadowMap.enabled = true;
				container.appendChild( renderer.domElement );

				renderer.gammaOutput = true;

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

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

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

				var gui = new GUI();

				gui.add( params, 'reflectivity', 0, 1 );
				gui.add( params, 'exposure', 0.1, 2 );
				gui.add( params, 'autoRotate' );
				gui.add( params, 'gemColor', [ 'Blue', 'Green', 'Red', 'White', 'Black' ] );
				gui.open();

			}

			function onWindowResize() {

				var width = window.innerWidth;
				var height = window.innerHeight;

				camera.aspect = width / height;
				camera.updateProjectionMatrix();

				renderer.setSize( width, height );

			}

			//

			function animate() {

				requestAnimationFrame( animate );

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

			}

			function render() {

				if ( gemBackMaterial !== undefined && gemFrontMaterial !== undefined ) {

					gemFrontMaterial.reflectivity = gemBackMaterial.reflectivity = params.reflectivity;

					var newColor = gemBackMaterial.color;
					switch ( params.gemColor ) {

						case 'Blue': newColor = new THREE.Color( 0x000088 ); break;
						case 'Red': newColor = new THREE.Color( 0x880000 ); break;
						case 'Green': newColor = new THREE.Color( 0x008800 ); break;
						case 'White': newColor = new THREE.Color( 0x888888 ); break;
						case 'Black': newColor = new THREE.Color( 0x0f0f0f ); break;

		}
					gemBackMaterial.color = gemFrontMaterial.color = newColor;


				}

				renderer.toneMappingExposure = params.exposure;

				camera.lookAt( scene.position );

				if ( params.autoRotate ) {

					for ( var i = 0, l = objects.length; i < l; i ++ ) {

						var object = objects[ i ];
						object.rotation.y += 0.005;

					}

	}

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>