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


			
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							<html>

<head>
<title>three.js webgl - intersection: ray with 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: 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 type="text/javascript" src="../build/Three.js"></script>
<script type="text/javascript" src="js/RequestAnimationFrame.js"></script>
<script type="text/javascript" src="js/Stats.js"></script>

<script type="text/javascript">

var scene, camera, renderer, info, mouse2d, 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;
	mouse2d = new THREE.Vector3( 0, 0, 1 );

	scene = new THREE.Scene();

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

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

	sun = new THREE.DirectionalLight( 0xffffff );
	sun.position = camera.position.clone();
	scene.addLight( 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.Cube( s,s,s, 1,1,1 ),
		new THREE.MeshLambertMaterial( { color: 0x003300 })
	);

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

	THREE.Collisions.colliders.push( THREE.CollisionUtils.MeshOBB( 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 r = new THREE.Ray();
	r.origin.copy( mouse2d );

	var matrix = camera.matrixWorld.clone();
	matrix.multiplySelf( THREE.Matrix4.makeInvert( camera.projectionMatrix ) );
	matrix.multiplyVector3( r.origin );
	r.direction = r.origin.clone().subSelf( camera.position );

	info.innerHTML = "";

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

	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>