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


			
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							<html>
    <head>
        <title>three.js webgl - collision detection</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="../build/Three.js">
        </script>
        <script type="text/javascript" src="js/RequestAnimationFrame.js">
        </script>

        <script type="text/javascript">

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

            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.Camera(40, window.innerWidth / window.innerHeight, 1, 10000);
		camera.position.y = 120;
		camera.position.x = 300;
		camera.position.z = 0;

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

                loader = new THREE.Loader(true);

                scene = new THREE.Scene();

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

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

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

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

                createObstacles();

                container.onmousemove = onDocumentMouseMove;
                animate();
            }

            function createObstacles(){
                createCube(100, 50, 10, new THREE.Vector3(0, 0, 100));
				camera.target = createCube(100, 50, 10, new THREE.Vector3(0, 0, 200));
				createCube(100, 50, 10, new THREE.Vector3(0, 0, 300));
            }

            function createCube(sx, sy, sz, p){
                var cube = new THREE.Mesh(new THREE.Cube(sx, sy, sz, 1, 1, 1), new THREE.MeshLambertMaterial({
                    color: 0x003300//, wireframe: true
                }));
                cube.position = p;
                scene.addObject(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);

                sphere.position.z += speed;
                if(sphere.position.z > range) sphere.position.z = 0;

				for (var i = 0; i < cubes.length; i++) {
					cubes[i].materials[0].color = new THREE.Color(0x003300);
				}

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

				var c = THREE.Collisions.rayCastNearest(ray);
				if (c && c.distance == -1) {
					info.innerHTML = "Colliding!";
					c.mesh.materials[0].color = new THREE.Color(0xff0000);
				} else if(c && c.distance >= 0) {
					info.innerHTML = "Approaching @ " + c.distance;
				} else {
					info.innerHTML = "No collider in sight.";
				}

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

                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>