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