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


			
				
					
						
						
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							<!doctype html>
<html lang="en">
	<head>
		<title>three.js webgl - collision reaction</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: 10px;
				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>

			var camera, scene, renderer, info, mouse2d, sun, loader, sphere, debugNormal;

			var range = 400;
			var speed = 1;
			var sphereSize = 4;

			var cubes = [];

			function init(){

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

				info = document.getElementById("info");

				camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
				camera.position.set( 300, 120, 0 );

				mouse2d = new THREE.Vector3( 0, 0, 1 );

				loader = new THREE.Loader(true);

				scene = new THREE.Scene();

				sphere = new THREE.Mesh( new THREE.SphereGeometry( sphereSize, 10, 10 ), new THREE.MeshLambertMaterial( { color: 0xff0000 } ) );
				scene.add( sphere );

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

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

				sun = new THREE.DirectionalLight(0xffffff);
				sun.position = new THREE.Vector3(1, -1, 1).normalize();
				scene.add(sun);

				createObstacles();

				var geometry = new THREE.Geometry();
				geometry.vertices.push( new THREE.Vertex( new THREE.Vector3(0,  0,  0) ) );
				geometry.vertices.push( new THREE.Vertex( new THREE.Vector3(10, 0,  0) ) );
				debugNormal = new THREE.Line( geometry, new THREE.LineBasicMaterial( { color: 0xff0000 } ) );
				scene.add( debugNormal );

				container.onmousemove = onDocumentMouseMove;
				animate();

			}

			function createObstacles(){

				createCube(100, 50, 10, new THREE.Vector3( 20, 0, 100), Math.PI / 4);
				camera.target = createCube(100, 50, 10, new THREE.Vector3(-20, 0, 200), -Math.PI / 4).position;
				createCube(100, 50, 10, new THREE.Vector3( 20, 0, 300), Math.PI / 4);

			}

			function createCube(sx, sy, sz, p, ry){

				var cube = new THREE.Mesh( new THREE.CubeGeometry( sx, sy, sz ), new THREE.MeshLambertMaterial( { color: 0x003300 } ) );
				cube.position = p;
				cube.rotation.y = ry;
				scene.add(cube);

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

				return cube;

			}

			function onDocumentMouseMove(event){

				event.preventDefault();
				mouse2d.x = (event.clientX / window.innerWidth) * 2 - 1;
				mouse2d.y = -(event.clientY / window.innerHeight) * 2 + 1;
				mouse2d.z = 1;

			}

			function animate() {

				requestAnimationFrame( animate );

				var ray = new THREE.Ray( sphere.position, new THREE.Vector3( 0, 0, 1 ) );

				//debugNormal.position = sphere.position;

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

				if ( !c || c.distance > speed ) {

					sphere.position.z += speed;

				}

				if( c && c.normal ) {

					info.innerHTML = vts( c.normal );

					var poi = ray.origin.clone().addSelf( ray.direction.clone().multiplyScalar( c.distance ) );
					debugNormal.geometry.vertices[0].position = poi.clone().addSelf( new THREE.Vector3( 2, 2, 2 ) );
					debugNormal.geometry.vertices[1].position = poi.clone().addSelf( c.normal.clone() );

				}

				if ( sphere.position.z > range ) sphere.position.set( 0, 0, 0);

				camera.position.x = Math.cos(mouse2d.x * Math.PI) * 300;
				camera.position.y = Math.cos(mouse2d.y * Math.PI) * 300;
				camera.position.z = 200 + Math.sin(mouse2d.x * Math.PI) * 300 +  Math.sin(mouse2d.y * Math.PI) * 300;

				camera.lookAt( camera.target );

				renderer.render( scene, camera );

			}

			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>