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


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - cameras</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: #808080;
				font-family:Monospace;
				font-size:13px;
				text-align:center;

				background-color: #000;
				margin: 0px;
				overflow: hidden;
			}

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

			a {

				color: #0080ff;
			}

			b { color: lightgreen }

			#stats { position: absolute; top:0; left: 0 }
		</style>
	</head>
	<body>

		<div id="container"></div>
		<div id="info">
			<a href="http://threejs.org" target="_blank">three.js</a> - cameras - logarithmic depth buffer<br/>
		</div>

		<script src="../build/three.min.js"></script>
		<script src="js/controls/OrbitControls.js"></script>
		<script src="js/libs/stats.min.js"></script>
		<script src="fonts/helvetiker_regular.typeface.js"></script>

		<script>

			var SCREEN_WIDTH = window.innerWidth;
			var SCREEN_HEIGHT = window.innerHeight;

			var container, stats;
			var camera, scene, renderer, controls;
			var cameraLogZBuf, sceneLogZBuf, rendererLogZBuf;

			var labels = [
				{ size: .000001, label: "microscopic (1µm)" },
				{ size: .001, label: "minuscule (1mm)" },
				{ size: .01, label: "tiny (1cm)" },
				{ size: 1, label: "petite (1m)" },
				{ size: 10, label: "small (10m)" },
				{ size: 100, label: "average (100m)" },
				{ size: 1000, label: "medium (1km)" },
				{ size: 10000, label: "good-sized (10km)" },
				{ size: 100000, label: "large (100km)" },
				{ size: 1000000, label: "extra-large (1Mm)" },
				{ size: 10000000, label: "mammoth (10Mm)" },
				{ size: 100000000, label: "enormous (100Mm)" },
				{ size: 1000000000, label: "stupendous (1Gm)" }
			];

			init();
			animate();

			function init() {

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

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

				// 1 micrometer to 1 parsec in one scene?   preposterous!  and yet...
        var NEAR = 1e-6, FAR = 1e24;
				camera = new THREE.PerspectiveCamera( 50, 0.5 * SCREEN_WIDTH / SCREEN_HEIGHT, NEAR, FAR );
				camera.position.z = 100;
				scene.add(camera);

				cameraLogZBuf = new THREE.PerspectiveCamera( 50, 0.5 * SCREEN_WIDTH / SCREEN_HEIGHT, NEAR, FAR );
				cameraLogZBuf.position = camera.position;
				cameraLogZBuf.quaternion = camera.quaternion;
				cameraLogZBuf.matrix = camera.matrix;

				camera.setViewOffset( SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0, SCREEN_WIDTH/2, SCREEN_HEIGHT );
				cameraLogZBuf.setViewOffset( SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_WIDTH/2, 0, SCREEN_WIDTH/2, SCREEN_HEIGHT );

				var labelmat = new THREE.MeshNormalMaterial();
				var labelmatLogZBuf = new THREE.MeshNormalMaterial();
				for (var i = 0; i < labels.length; i++) {
					var labelgeo = new THREE.TextGeometry(labels[i].label, {
						size: labels[i].size,
						height: labels[i].size / 2,
						font: 'helvetiker',
					});
					labelgeo.computeBoundingSphere();
					var mesh = new THREE.Mesh(labelgeo, labelmat);
					mesh.position.x = -labelgeo.boundingSphere.radius;
					mesh.position.y = labels[i].size;
					mesh.position.z = -labels[i].size * 10;
					scene.add(mesh);

					var meshLogZBuf = new THREE.Mesh(labelgeo.clone(), labelmatLogZBuf);
					meshLogZBuf.position = mesh.position;
					sceneLogZBuf.add(meshLogZBuf);
				}

				renderer = new THREE.WebGLRenderer({antialias: true, logarithmicDepthBuffer: false});
				renderer.setSize(SCREEN_WIDTH/2, SCREEN_HEIGHT);
				renderer.domElement.style.position = "relative";
				container.appendChild(renderer.domElement);

				rendererLogZBuf = new THREE.WebGLRenderer({antialias: true, logarithmicDepthBuffer: true});
				rendererLogZBuf.setSize(SCREEN_WIDTH/2, SCREEN_HEIGHT);
				rendererLogZBuf.domElement.style.position = "relative";
				container.appendChild(rendererLogZBuf.domElement);

				controls = new THREE.OrbitControls(camera, document);
				controls.dollyOut(.0000001);
				controls.rotateUp(Math.PI/16);
				//controls.addEventListener( 'change', render );

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

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

				render();
			}

			function onWindowResize( event ) {

				SCREEN_WIDTH = window.innerWidth;
				SCREEN_HEIGHT = window.innerHeight;

				renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );

				camera.aspect = 0.5 * SCREEN_WIDTH / SCREEN_HEIGHT;
				camera.updateProjectionMatrix();

			}

			function animate() {

				requestAnimationFrame( animate );

        render();
			}

			function render() {
				controls.update();

				renderer.render( scene, camera );
				rendererLogZBuf.render( sceneLogZBuf, cameraLogZBuf );
				stats.update();
console.log('up it');
			}

		</script>
	</body>
</html>