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


			
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							<html> 
 
<head> 
<title>Intersection: ray with mesh (through box)</title> 
<meta http-equiv="content-type" content="text/html; charset=utf-8"> 
<style type="text/css"> 

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 type="text/javascript" src="lib/Three.js"></script>
<script type="text/javascript" src="lib/RequestAnimationFrame.js"></script>
<script type="text/javascript" src="src/Physics.js"></script> 
<script type="text/javascript" src="src/PhysicsUtils.js"></script> 

<script type="text/javascript"> 

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

var theta = 0;
var radius = 250;
var speed = 0.0015;
var sphereSize = 4;


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.y = 120;
	mouse2d = new THREE.Vector3( 0, 0, 1 );
	
	loader = new THREE.JSONLoader();

	scene = new THREE.Scene();
	
	ray = new Ray();
	ray.origin.y = 10000;
	ray.direction = new THREE.Vector3(0, -1, 0);
	
	sphere = new THREE.Mesh( new Sphere( sphereSize, 10, 10 ), new THREE.MeshLambertMaterial( { color: 0xff0000 } ) );
	scene.addObject(sphere);
	camera.target = sphere;

	renderer = new THREE.WebGLRenderer();
	renderer.setSize( window.innerWidth, window.innerHeight );
	container.appendChild(renderer.domElement);
	
	var ambientLight = new THREE.AmbientLight( 0x444444 );
	scene.addLight( ambientLight );

	sun = new THREE.DirectionalLight( 0xaaaaaa );
	sun.position = new THREE.Vector3(-1,1, -1).normalize();
	scene.addLight( sun );
	
	loadCube();
	
	
	container.onmousemove = onDocumentMouseMove;
	animate();
}

function loadCube(p) {
	var onGeometry = function( geometry ) {		
		var mesh = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: 0xf3e4b8 } ) );
		scene.addObject( mesh );
		Physics.colliders.push( PhysicsUtils.MeshColliderWBox(mesh) );
	};

	loader.load( { model: "models/terrain.js", callback: onGeometry } );
}

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 = Physics.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;
	
	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>