From b5dfd828d0c4eaa20eb1968ecc6d10fb57933887 Mon Sep 17 00:00:00 2001
From: "Mr.doob" <info@mrdoob.com>
Date: Sat, 3 Sep 2011 23:24:30 +0200
Subject: [PATCH] Added draggable cubes example.

---
 .../webgl_interactive_draggablecubes.html     | 210 ++++++++++++++++++
 1 file changed, 210 insertions(+)
 create mode 100644 examples/webgl_interactive_draggablecubes.html
diff --git a/examples/webgl_interactive_draggablecubes.html b/examples/webgl_interactive_draggablecubes.html
new file mode 100644
index 00000000..7ee8fc6c
--- /dev/null
+++ b/examples/webgl_interactive_draggablecubes.html
@@ -0,0 +1,210 @@
+<!DOCTYPE HTML>
+<html lang="en">
+	<head>
+		<title>three.js webgl - draggable cubes</title>
+		<meta charset="utf-8">
+		<style type="text/css">
+			body {
+				font-family: Monospace;
+				background-color: #f0f0f0;
+				margin: 0px;
+				overflow: hidden;
+			}
+		</style>
+	</head>
+	<body>
+
+		<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 container, stats;
+			var camera, scene, projector, renderer;
+			var objects = [], plane;
+
+			var mouse = { x: 0, y: 0 }, INTERSECTED, SELECTED;
+
+			init();
+			animate();
+
+			function init() {
+
+				container = document.createElement( 'div' );
+				document.body.appendChild( container );
+
+				var info = document.createElement( 'div' );
+				info.style.position = 'absolute';
+				info.style.top = '10px';
+				info.style.width = '100%';
+				info.style.textAlign = 'center';
+				info.innerHTML = '<a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> webgl - draggable cubes';
+				container.appendChild( info );
+
+				camera = new THREE.Camera( 70, window.innerWidth / window.innerHeight, 1, 10000 );
+				camera.position.z = 1000;
+
+				scene = new THREE.Scene();
+
+				var light = new THREE.DirectionalLight( 0xffffff, 2 );
+				light.position.x = 1;
+				light.position.y = 1;
+				light.position.z = 1;
+				light.position.normalize();
+				scene.addLight( light );
+
+				var light = new THREE.DirectionalLight( 0xffffff );
+				light.position.x = - 1;
+				light.position.y = - 1;
+				light.position.z = - 1;
+				light.position.normalize();
+				scene.addLight( light );
+
+				var geometry = new THREE.CubeGeometry( 40, 40, 40 );
+
+				for ( var i = 0; i < 200; i ++ ) {
+
+					var object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: Math.random() * 0xffffff } ) );
+					object.position.x = Math.random() * 800 - 400;
+					object.position.y = Math.random() * 600 - 300;
+					object.position.z = Math.random() * 800 - 400;
+					object.rotation.x = ( Math.random() * 360 ) * Math.PI / 180;
+					object.rotation.y = ( Math.random() * 360 ) * Math.PI / 180;
+					object.rotation.z = ( Math.random() * 360 ) * Math.PI / 180;
+					object.scale.x = Math.random() * 2 + 1;
+					object.scale.y = Math.random() * 2 + 1;
+					object.scale.z = Math.random() * 2 + 1;
+					scene.addObject( object );
+
+					objects.push( object );
+
+				}
+
+				plane = new THREE.Mesh( new THREE.PlaneGeometry( 2000, 2000, 8, 8 ), new THREE.MeshBasicMaterial( { color: 0x000000, opacity: 0.5, wireframe: true } ) );
+				plane.visible = false;
+				scene.addObject( plane );
+
+				projector = new THREE.Projector();
+
+				renderer = new THREE.WebGLRenderer();
+				renderer.sortObjects = false;
+				renderer.setSize( window.innerWidth, window.innerHeight );
+
+				container.appendChild(renderer.domElement);
+
+				stats = new Stats();
+				stats.domElement.style.position = 'absolute';
+				stats.domElement.style.top = '0px';
+				container.appendChild( stats.domElement );
+
+				document.addEventListener( 'mousemove', onDocumentMouseMove, false );
+				document.addEventListener( 'mousedown', onDocumentMouseDown, false );
+				document.addEventListener( 'mouseup', onDocumentMouseUp, false );
+
+			}
+
+			function onDocumentMouseMove( event ) {
+
+				event.preventDefault();
+
+				mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
+				mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
+
+				//
+
+				var vector = new THREE.Vector3( mouse.x, mouse.y, 0.5 );
+				projector.unprojectVector( vector, camera );
+
+				var ray = new THREE.Ray( camera.position, vector.subSelf( camera.position ).normalize() );
+
+
+				if ( SELECTED ) {
+
+					var intersects = ray.intersectObject( plane );
+					SELECTED.position.copy( intersects[ 0 ].point );
+					return;
+
+				}
+
+
+				var intersects = ray.intersectObjects( objects );
+
+				if ( intersects.length > 0 ) {
+
+					if ( INTERSECTED != intersects[ 0 ].object ) {
+
+						if ( INTERSECTED ) INTERSECTED.materials[ 0 ].color.setHex( INTERSECTED.currentHex );
+
+						INTERSECTED = intersects[ 0 ].object;
+						INTERSECTED.currentHex = INTERSECTED.materials[ 0 ].color.getHex();
+						INTERSECTED.materials[ 0 ].color.setHex( 0xff0000 );
+
+						plane.position.copy( INTERSECTED.position );
+
+					}
+
+				} else {
+
+					if ( INTERSECTED ) INTERSECTED.materials[ 0 ].color.setHex( INTERSECTED.currentHex );
+
+					INTERSECTED = null;
+
+				}
+
+			}
+
+			function onDocumentMouseDown( event ) {
+
+				event.preventDefault();
+
+				var vector = new THREE.Vector3( mouse.x, mouse.y, 0.5 );
+				projector.unprojectVector( vector, camera );
+
+				var ray = new THREE.Ray( camera.position, vector.subSelf( camera.position ).normalize() );
+
+				var intersects = ray.intersectObjects( objects );
+
+				if ( intersects.length > 0 ) {
+
+					SELECTED = intersects[ 0 ].object;
+
+				}
+
+			}
+
+			function onDocumentMouseUp( event ) {
+
+				event.preventDefault();
+
+				SELECTED = null;
+
+			}
+
+			//
+
+			function animate() {
+
+				requestAnimationFrame( animate );
+
+				render();
+				stats.update();
+
+			}
+
+			var radius = 100;
+			var theta = 0;
+
+			function render() {
+
+				theta += 0.2;
+
+				renderer.render( scene, camera );
+
+			}
+
+		</script>
+
+	</body>
+</html>
