javascript
/
three.js
镜像来自 https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - multiple views</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 {
				color: #000;
				font-family:Monospace;
				font-size:13px;
				text-align:center;

				background-color: #fff;
				margin: 0px;
				overflow: hidden;
			}

			#info {
				position: absolute;
				top: 0px; width: 100%;
				padding: 5px;
			}

			a {
				color: #0080ff;
			}

		</style>
	</head>
	<body>

		<div id="container"></div>
		<div id="info"><a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - multiple views - webgl</div>

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

		<script src="js/Detector.js"></script>
		<script src="js/libs/stats.min.js"></script>

		<script>

			if ( ! Detector.webgl ) Detector.addGetWebGLMessage();

			var container, stats;

			var views, scene, renderer;

			var mouseX = 0, mouseY = 0;

			var windowWidth, windowHeight;

			var views = [
				{
					left: 0,
					top: 0,
					width: 0.5,
					height: 1.0,
					background: new THREE.Color( 0.5, 0.5, 0.7 ),
					eye: [ 0, 300, 1800 ],
					up: [ 0, 1, 0 ],
					fov: 30,
					updateCamera: function ( camera, scene, mouseX, mouseY ) {
					  camera.position.x += mouseX * 0.05;
					  camera.position.x = Math.max( Math.min( camera.position.x, 2000 ), -2000 );
					  camera.lookAt( scene.position );
					}
				},
				{
					left: 0.5,
					top: 0.5,
					width: 0.5,
					height: 0.5,
					background: new THREE.Color( 0.7, 0.5, 0.5 ),
					eye: [ 0, 1800, 0 ],
					up: [ 0, 0, 1 ],
					fov: 45,
					updateCamera: function ( camera, scene, mouseX, mouseY ) {
					  camera.position.x -= mouseX * 0.05;
					  camera.position.x = Math.max( Math.min( camera.position.x, 2000 ), -2000 );
					  camera.lookAt( camera.position.clone().setY( 0 ) );
					}
				},
				{
					left: 0.5,
					top: 0,
					width: 0.5,
					height: 0.5,
					background: new THREE.Color( 0.5, 0.7, 0.7 ),
					eye: [ 1400, 800, 1400 ],
					up: [ 0, 1, 0 ],
					fov: 60,
					updateCamera: function ( camera, scene, mouseX, mouseY ) {
					  camera.position.y -= mouseX * 0.05;
					  camera.position.y = Math.max( Math.min( camera.position.y, 1600 ), -1600 );
					  camera.lookAt( scene.position );
					}
				}
			];

			init();
			animate();

			function init() {

				container = document.getElementById( 'container' );

				for (var ii =  0; ii < views.length; ++ii ) {

					var view = views[ii];
					var camera = new THREE.PerspectiveCamera( view.fov, window.innerWidth / window.innerHeight, 1, 10000 );
					camera.position.fromArray( view.eye );
					camera.up.fromArray( view.up );
					view.camera = camera;

				}

				scene = new THREE.Scene();

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

				// shadow

				var canvas = document.createElement( 'canvas' );
				canvas.width = 128;
				canvas.height = 128;

				var context = canvas.getContext( '2d' );
				var gradient = context.createRadialGradient( canvas.width / 2, canvas.height / 2, 0, canvas.width / 2, canvas.height / 2, canvas.width / 2 );
				gradient.addColorStop( 0.1, 'rgba(0,0,0,0.15)' );
				gradient.addColorStop( 1, 'rgba(0,0,0,0)' );

				context.fillStyle = gradient;
				context.fillRect( 0, 0, canvas.width, canvas.height );

				var shadowTexture = new THREE.CanvasTexture( canvas );

				var shadowMaterial = new THREE.MeshBasicMaterial( { map: shadowTexture, transparent: true } );
				var shadowGeo = new THREE.PlaneBufferGeometry( 300, 300, 1, 1 );

				var shadowMesh;

				shadowMesh = new THREE.Mesh( shadowGeo, shadowMaterial );
				shadowMesh.position.y = - 250;
				shadowMesh.rotation.x = - Math. PI / 2;
				scene.add( shadowMesh );

				shadowMesh = new THREE.Mesh( shadowGeo, shadowMaterial );
				shadowMesh.position.x = - 400;
				shadowMesh.position.y = - 250;
				shadowMesh.rotation.x = - Math. PI / 2;
				scene.add( shadowMesh );

				shadowMesh = new THREE.Mesh( shadowGeo, shadowMaterial );
				shadowMesh.position.x = 400;
				shadowMesh.position.y = - 250;
				shadowMesh.rotation.x = - Math. PI / 2;
				scene.add( shadowMesh );

				var faceIndices = [ 'a', 'b', 'c' ];

				var color, f, f2, f3, p, vertexIndex,

					radius = 200,

					geometry  = new THREE.IcosahedronGeometry( radius, 1 ),
					geometry2 = new THREE.IcosahedronGeometry( radius, 1 ),
					geometry3 = new THREE.IcosahedronGeometry( radius, 1 );

				for ( var i = 0; i < geometry.faces.length; i ++ ) {

					f  = geometry.faces[ i ];
					f2 = geometry2.faces[ i ];
					f3 = geometry3.faces[ i ];

					for( var j = 0; j < 3; j++ ) {

						vertexIndex = f[ faceIndices[ j ] ];

						p = geometry.vertices[ vertexIndex ];

						color = new THREE.Color( 0xffffff );
						color.setHSL( ( p.y / radius + 1 ) / 2, 1.0, 0.5 );

						f.vertexColors[ j ] = color;

						color = new THREE.Color( 0xffffff );
						color.setHSL( 0.0, ( p.y / radius + 1 ) / 2, 0.5 );

						f2.vertexColors[ j ] = color;

						color = new THREE.Color( 0xffffff );
						color.setHSL( 0.125 * vertexIndex/geometry.vertices.length, 1.0, 0.5 );

						f3.vertexColors[ j ] = color;

					}

				}

				var mesh, wireframe;

				var material = new THREE.MeshPhongMaterial( { color: 0xffffff, flatShading: true, vertexColors: THREE.VertexColors, shininess: 0 } );
				var wireframeMaterial = new THREE.MeshBasicMaterial( { color: 0x000000, wireframe: true, transparent: true } );

				mesh = new THREE.Mesh( geometry, material );
				wireframe = new THREE.Mesh( geometry, wireframeMaterial );
				mesh.add( wireframe );
				mesh.position.x = - 400;
				mesh.rotation.x = - 1.87;
				scene.add( mesh );

				mesh = new THREE.Mesh( geometry2, material );
				wireframe = new THREE.Mesh( geometry2, wireframeMaterial );
				mesh.add( wireframe );
				mesh.position.x = 400;
				scene.add( mesh );

				mesh = new THREE.Mesh( geometry3, material );
				wireframe = new THREE.Mesh( geometry3, wireframeMaterial );
				mesh.add( wireframe );
				scene.add( mesh );

				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 );

				document.addEventListener( 'mousemove', onDocumentMouseMove, false );

			}

			function onDocumentMouseMove( event ) {

				mouseX = ( event.clientX - windowWidth / 2 );
				mouseY = ( event.clientY - windowHeight / 2 );

			}

			function updateSize() {

				if ( windowWidth != window.innerWidth || windowHeight != window.innerHeight ) {

					windowWidth  = window.innerWidth;
					windowHeight = window.innerHeight;

					renderer.setSize ( windowWidth, windowHeight );

				}

			}

			function animate() {

				render();
				stats.update();

				requestAnimationFrame( animate );
			}

			function render() {

				updateSize();

				for ( var ii = 0; ii < views.length; ++ii ) {

					var view = views[ii];
					var camera = view.camera;

					view.updateCamera( camera, scene, mouseX, mouseY );

					var left   = Math.floor( windowWidth  * view.left );
					var top    = Math.floor( windowHeight * view.top );
					var width  = Math.floor( windowWidth  * view.width );
					var height = Math.floor( windowHeight * view.height );

					renderer.setViewport( left, top, width, height );
					renderer.setScissor( left, top, width, height );
					renderer.setScissorTest( true );
					renderer.setClearColor( view.background );

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

					renderer.render( scene, camera );

				}

			}

		</script>

	</body>
</html>