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 - intersection: ray with box</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;
			}

			#oldie { background-color: #ddd !important }

			#info {
				position: absolute;
				top: 30px; left: 150px; width: 800px;
				color: #000000;
				padding: 5px;
				font-family: Monospace;
				font-size: 13px;
				text-align: left;
				z-index:100;
			}

			#options {
				position: absolute;
				top: 10px; left: 10px; width: 800px;
				color: #000000;
				padding: 5px;
				font-family: Monospace;
				font-size: 13px;
				text-align: left;
				z-index:100;
			}
		</style>
		<script src="../build/Three.js"></script>
		<script src="js/RequestAnimationFrame.js"></script>
		<script src="js/Stats.js"></script>

		<script>

			var camera, scene, projector, renderer,
			info, mouse = { x: 0, y: 0 }, sun, cube;

			var bounce = 0;

			function init() {

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

				info = document.getElementById("info");

				camera = new THREE.Camera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
				camera.position.z = -500;

				scene = new THREE.Scene();

				projector = new THREE.Projector();

				renderer = new THREE.WebGLRenderer();
				renderer.setSize( window.innerWidth, window.innerHeight );
				container.appendChild(renderer.domElement);

				var ambientLight = new THREE.AmbientLight( 0x606060 );
				scene.add( ambientLight );

				sun = new THREE.DirectionalLight( 0xffffff );
				sun.position = camera.position.clone();
				scene.add( sun );

				createCube( 200, new THREE.Vector3( 0,0,0 ) );

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

				container.onmousemove = onDocumentMouseMove;
				animate();

			}

			function createCube( s, p ) {

				cube = new THREE.Mesh (
					new THREE.CubeGeometry( s, s, s ),
					new THREE.MeshLambertMaterial( { color: 0x003300 } )
				);

				cube.position = p;
				scene.add( cube );

				THREE.Collisions.colliders.push( THREE.CollisionUtils.MeshOBB( cube ) );

			};

			function onDocumentMouseMove( event ) {

				event.preventDefault();
				mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
				mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;

			};

			function animate() {

				requestAnimationFrame( animate );

				info.innerHTML = "";

				var vector = new THREE.Vector3( mouse.x, mouse.y, 0.5 );
				projector.unprojectVector( vector, camera );

				var ray = new THREE.Ray( camera.position, vector.subSelf( camera.position ).normalize() );

				var c = THREE.Collisions.rayCastNearest( ray );

				if ( c ) {

					info.innerHTML += "Found @ distance " + c.distance.toFixed(2);
					c.mesh.materials[ 0 ].color.setHex( 0xaa0000 );

				} else {

					info.innerHTML += "No intersection";
					cube.materials[0].color.setHex( 0x003300 );

				}


				cube.rotation.x += 0.01;
				cube.rotation.y += 0.02;
				cube.position.x = Math.sin(bounce) * 100;
				bounce += 0.01;

				renderer.render( scene, camera );

				stats.update();

			};

			function vts(v) {

				if(!v) return "undefined<br>";
				else return v.x + " , " + v.y + " , " + v.z + "<br>";

			};

		</script>

	</head>

	<body onload="init();">
		<div id="info"></div>
		<div id="options"></div>
	</body>

</html>