javascript
/
three.js
огледало от https://github.com/tazdij/three.js.git


			
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							<!doctype html>
<html lang="en">
	<head>
		<title>three.js webgl - intersection: ray with terrain mesh (through 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: 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, ray;

			var theta = 0, radius = 250, speed = 0.002, sphereSize = 4;


			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.y = 120;

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

				loader = new THREE.JSONLoader();

				scene = new THREE.Scene();

				ray = new THREE.Ray();
				ray.origin.y = 10000;
				ray.direction = new THREE.Vector3(0, -1, 0);

				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( 0x444444 );
				scene.add( ambientLight );

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

				loadCube();

				container.onmousemove = onDocumentMouseMove;
				animate();

			}

			function loadCube(p) {

				loader.load( "obj/terrain.js", function( geometry ) {

					var mesh = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: 0xf3e4b8 } ) );
					scene.add( mesh );
					THREE.Collisions.colliders.push( THREE.CollisionUtils.MeshColliderWBox( mesh ) );

				} );

			}

			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 );

				ray.origin.x = radius * Math.cos(theta);
				ray.origin.z = radius * Math.sin(theta);

				var c = THREE.Collisions.rayCastNearest(ray);
				if(c) {
					//info.innerHTML = "Found @ distance " + c.distance;
					sphere.position = ray.origin.clone().subSelf( new THREE.Vector3(0, c.distance - sphereSize/2, 0) );
				} else {
					//info.innerHTML = "No intersection";
				}

				theta += speed;

				camera.lookAt( sphere.position );

				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>