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 canvas - camera - orthographic</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: #f0f0f0;
				margin: 0px;
				overflow: hidden;
			}
		</style>
	</head>
	<body>

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

		<script src="js/renderers/Projector.js"></script>
		<script src="js/renderers/CanvasRenderer.js"></script>

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

		<script>

			var container, stats;
			var camera, scene, renderer;

			init();
			animate();

			function init() {

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

				var info = document.createElement( 'div' );
				info.style.position = 'absolute';
				info.style.top = '10px';
				info.style.width = '100%';
				info.style.textAlign = 'center';
				info.innerHTML = '<a href="http://threejs.org" target="_blank">three.js</a> - orthographic view';
				container.appendChild( info );

				camera = new THREE.OrthographicCamera( window.innerWidth / - 2, window.innerWidth / 2, window.innerHeight / 2, window.innerHeight / - 2, - 500, 1000 );
				camera.position.x = 200;
				camera.position.y = 100;
				camera.position.z = 200;

				scene = new THREE.Scene();

				// Grid

				var size = 500, step = 50;

				var geometry = new THREE.Geometry();

				for ( var i = - size; i <= size; i += step ) {

					geometry.vertices.push( new THREE.Vector3( - size, 0, i ) );
					geometry.vertices.push( new THREE.Vector3(   size, 0, i ) );

					geometry.vertices.push( new THREE.Vector3( i, 0, - size ) );
					geometry.vertices.push( new THREE.Vector3( i, 0,   size ) );

				}

				var material = new THREE.LineBasicMaterial( { color: 0x000000, opacity: 0.2 } );

				var line = new THREE.LineSegments( geometry, material );
				scene.add( line );

				// Cubes

				var geometry = new THREE.BoxGeometry( 50, 50, 50 );
				var material = new THREE.MeshLambertMaterial( { color: 0xffffff, overdraw: 0.5 } );

				for ( var i = 0; i < 100; i ++ ) {

					var cube = new THREE.Mesh( geometry, material );

					cube.scale.y = Math.floor( Math.random() * 2 + 1 );

					cube.position.x = Math.floor( ( Math.random() * 1000 - 500 ) / 50 ) * 50 + 25;
					cube.position.y = ( cube.scale.y * 50 ) / 2;
					cube.position.z = Math.floor( ( Math.random() * 1000 - 500 ) / 50 ) * 50 + 25;

					scene.add( cube );

				}

				// Lights

				var ambientLight = new THREE.AmbientLight( Math.random() * 0x10 );
				scene.add( ambientLight );

				var directionalLight = new THREE.DirectionalLight( Math.random() * 0xffffff );
				directionalLight.position.x = Math.random() - 0.5;
				directionalLight.position.y = Math.random() - 0.5;
				directionalLight.position.z = Math.random() - 0.5;
				directionalLight.position.normalize();
				scene.add( directionalLight );

				var directionalLight = new THREE.DirectionalLight( Math.random() * 0xffffff );
				directionalLight.position.x = Math.random() - 0.5;
				directionalLight.position.y = Math.random() - 0.5;
				directionalLight.position.z = Math.random() - 0.5;
				directionalLight.position.normalize();
				scene.add( directionalLight );

				renderer = new THREE.CanvasRenderer();
				renderer.setClearColor( 0xf0f0f0 );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				container.appendChild( renderer.domElement );

				stats = new Stats();
				stats.domElement.style.position = 'absolute';
				stats.domElement.style.top = '0px';
				container.appendChild( stats.domElement );

				//

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

			}

			function onWindowResize() {

				camera.left = window.innerWidth / - 2;
				camera.right = window.innerWidth / 2;
				camera.top = window.innerHeight / 2;
				camera.bottom = window.innerHeight / - 2;

				camera.updateProjectionMatrix();

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

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				var timer = Date.now() * 0.0001;

				camera.position.x = Math.cos( timer ) * 200;
				camera.position.z = Math.sin( timer ) * 200;
				camera.lookAt( scene.position );

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>