samien
/
three.js
zrcadlo https://github.com/mrdoob/three.js.git


			
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - lights - light probe</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<style>
			body {
				font-family: Monospace;
				background-color: #000;
				color: #fff;
				margin: 0px;
				overflow: hidden;
			}

			a {
				color: #ffa;
				font-weight: bold;
			}

			#info {
				color: #fff;
				position: absolute;
				top: 10px;
				width: 100%;
				text-align: center;
				z-index: 0; /* to not conflict with dat.gui */
				display:block;
			}
		</style>
	</head>

	<body>
		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl lights - light probe
		</div>

		<script src="../build/three.js"></script>

		<script src="js/controls/OrbitControls.js"></script>

		<script src="js/libs/dat.gui.min.js"></script>

		<script src="js/WebGL.js"></script>

		<script>

			if ( WEBGL.isWebGLAvailable() === false ) {

				document.body.appendChild( WEBGL.getWebGLErrorMessage() );

			}

			var mesh, renderer, scene, camera;

			var gui;

			var ambientLight;
			var lightProbe;
			var directionalLight;

			// linear color space
			var API = {
				ambientLightIntensity: 0.0,
				lightProbeIntensity: 0.3,
				directionalLightIntensity: 0.2,
				envMapIntensity: 1
			};

			init();

			function init() {

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

				// tone mapping
				//renderer.toneMapping = THREE.LinearToneMapping;
			 	//renderer.toneMappingExposure = API.exposure;

				// gamma
				renderer.gammaOutput = true;
				renderer.gammaFactor = 2.2; // approximate sRGB

				// scene
				scene = new THREE.Scene();

				// camera
				camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 1000 );
				camera.position.set( - 15, 0, 20 );

				// controls
				var controls = new THREE.OrbitControls( camera, renderer.domElement );
				controls.addEventListener( 'change', render );
				controls.minDistance = 10;
				controls.maxDistance = 50;
				controls.enablePan = false;

				// ambient
				ambientLight = new THREE.AmbientLight( 0xffffff, API.ambientLightIntensity );
				scene.add( ambientLight );

				// probe
				lightProbe = new THREE.LightProbe( 0xffffff, API.lightProbeIntensity );
				scene.add( lightProbe );

				// light
				directionalLight = new THREE.DirectionalLight( 0xffffff, API.directionalLightIntensity );
				directionalLight.position.set( 10, 10, 10 );
				scene.add( directionalLight );

				// envmap
				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 urls = genCubeUrls( 'textures/cube/pisa/', '.png' );

				new THREE.CubeTextureLoader().load( urls, function ( cubeTexture ) {

					cubeTexture.encoding = THREE.sRGBEncoding;

					scene.background = cubeTexture;

					lightProbe.setFromCubeTexture( cubeTexture );

					var geometry = new THREE.SphereBufferGeometry( 5, 64, 32 );
					//var geometry = new THREE.TorusKnotBufferGeometry( 4, 1.5, 256, 32, 2, 3 );

					var material = new THREE.MeshStandardMaterial( {
						color: 0xffffff, 
						metalness: 0,
						roughness: 0,
						envMap: cubeTexture,
						envMapIntensity: API.envMapIntensity,
					} );

					// mesh
					mesh = new THREE.Mesh( geometry, material );
					scene.add( mesh );

					render();

				} );


				// gui
				gui = new dat.GUI();

				gui.width = 300;

				gui.domElement.style.userSelect = 'none';

				var fl = gui.addFolder( 'Intensity' );
				fl.add( API, 'ambientLightIntensity', 0, 1, 0.02 )
					.name( 'ambient light')
					.onChange( function() { ambientLight.intensity = API.ambientLightIntensity; render(); } );

				fl.add( API, 'lightProbeIntensity', 0, 1, 0.02 )
					.name( 'light probe')
					.onChange( function() { lightProbe.intensity = API.lightProbeIntensity; render(); } );

				fl.add( API, 'directionalLightIntensity', 0, 1, 0.02 )
					.name( 'directional light')
					.onChange( function() { directionalLight.intensity = API.directionalLightIntensity; render(); } );

				fl.add( API, 'envMapIntensity', 0, 1, 0.02 )
					.name( 'envMap')
					.onChange( function() { mesh.material.envMapIntensity = API.envMapIntensity; render(); } );

				fl.open();

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

			}

			function onWindowResize() {

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

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

				render();

			}

			function render() {

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>