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


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - tone 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="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - Tone Mapping<br />
			Battle Damaged Sci-fi Helmet by
			<a href="https://sketchfab.com/theblueturtle_" target="_blank" rel="noopener">theblueturtle_</a><br />
			<a href="https://hdrihaven.com/hdri/?h=royal_esplanade" target="_blank" rel="noopener">Royal Esplanade</a> by <a href="https://hdrihaven.com/" target="_blank" rel="noopener">HDRI Haven</a>
		</div>

		<script type="module">

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

			import { GUI } from './jsm/libs/dat.gui.module.js';
			import { OrbitControls } from './jsm/controls/OrbitControls.js';
			import { GLTFLoader } from './jsm/loaders/GLTFLoader.js';
			import { RGBELoader } from './jsm/loaders/RGBELoader.js';

			var mesh, renderer, scene, camera, controls;
			var gui, guiExposure = null;

			var params = {
				exposure: 0.8,
				toneMapping: 'ACESFilmic'
			};

			var toneMappingOptions = {
				None: THREE.NoToneMapping,
				Linear: THREE.LinearToneMapping,
				Reinhard: THREE.ReinhardToneMapping,
				Cineon: THREE.CineonToneMapping,
				ACESFilmic: THREE.ACESFilmicToneMapping
			};

			init().catch( function ( err ) {

				console.error( err );

			} );

			async function init() {

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

				renderer.toneMapping = toneMappingOptions[ params.toneMapping ];
				renderer.toneMappingExposure = params.exposure;

				renderer.outputEncoding = THREE.sRGBEncoding;

				scene = new THREE.Scene();

				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.25, 20 );
				camera.position.set( - 1.8, 0.6, 2.7 );

				controls = new OrbitControls( camera, renderer.domElement );
				controls.addEventListener( 'change', render ); // use if there is no animation loop
				controls.enableZoom = false;
				controls.enablePan = false;
				controls.target.set( 0, 0, - 0.2 );
				controls.update();

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

				var rgbeLoader = new RGBELoader()
					.setDataType( THREE.UnsignedByteType )
					.setPath( 'textures/equirectangular/' );

				var gltfLoader = new GLTFLoader().setPath( 'models/gltf/DamagedHelmet/glTF/' );

				var [ texture, gltf ] = await Promise.all( [
					rgbeLoader.loadAsync( 'venice_sunset_1k.hdr' ),
					gltfLoader.loadAsync( 'DamagedHelmet.gltf' ),
				] );

				// environment

				var envMap = pmremGenerator.fromEquirectangular( texture ).texture;

				scene.background = envMap;
				scene.environment = envMap;

				texture.dispose();
				pmremGenerator.dispose();

				// model

				gltf.scene.traverse( function ( child ) {

					if ( child.isMesh ) {

						mesh = child;
						scene.add( mesh );

					}

				} );

				render();

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

				gui = new GUI();

				gui.add( params, 'toneMapping', Object.keys( toneMappingOptions ) )

					.onChange( function () {

						updateGUI();

						renderer.toneMapping = toneMappingOptions[ params.toneMapping ];
						mesh.material.needsUpdate = true;
						render();

					} );

				updateGUI();

				gui.open();

			}

			function updateGUI() {

				if ( guiExposure !== null ) {

					gui.remove( guiExposure );
					guiExposure = null;

				}

				if ( params.toneMapping !== 'None' ) {

					guiExposure = gui.add( params, 'exposure', 0, 2 )

						.onChange( function () {

							renderer.toneMappingExposure = params.exposure;
							render();

						} );

				}

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;

				camera.updateProjectionMatrix();

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

				render();

			}

			function render() {

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>