javascript
/
three.js
镜像自地址 https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - draggable cubes</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<style>
			body {
				font-family: Monospace;
				background-color: #f0f0f0;
				margin: 0px;
				overflow: hidden;
			}
		</style>
	</head>
	<body>

		<script src="../build/three.js"></script>

		<script src="js/controls/TrackballControls.js"></script>

		<script src="js/libs/stats.min.js"></script>

		<script>

			var container, stats;
			var camera, controls, scene, renderer;
			var objects = [];
			var plane = new THREE.Plane();
			var raycaster = new THREE.Raycaster();
			var mouse = new THREE.Vector2(),
			offset = new THREE.Vector3(),
			intersection = new THREE.Vector3(),
			INTERSECTED, SELECTED;

			init();
			animate();

			function init() {

				container = document.createElement( 'div' );
				document.body.appendChild( container );

				camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 10000 );
				camera.position.z = 1000;

				controls = new THREE.TrackballControls( camera );
				controls.rotateSpeed = 1.0;
				controls.zoomSpeed = 1.2;
				controls.panSpeed = 0.8;
				controls.noZoom = false;
				controls.noPan = false;
				controls.staticMoving = true;
				controls.dynamicDampingFactor = 0.3;

				scene = new THREE.Scene();

				scene.add( new THREE.AmbientLight( 0x505050 ) );

				var light = new THREE.SpotLight( 0xffffff, 1.5 );
				light.position.set( 0, 500, 2000 );
				light.castShadow = true;

				light.shadow = new THREE.LightShadow( new THREE.PerspectiveCamera( 50, 1, 200, 10000 ) );
				light.shadow.bias = - 0.00022;

				light.shadow.mapSize.width = 2048;
				light.shadow.mapSize.height = 2048;

				scene.add( light );

				var geometry = new THREE.BoxGeometry( 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() * 1000 - 500;
					object.position.y = Math.random() * 600 - 300;
					object.position.z = Math.random() * 800 - 400;

					object.rotation.x = Math.random() * 2 * Math.PI;
					object.rotation.y = Math.random() * 2 * Math.PI;
					object.rotation.z = Math.random() * 2 * Math.PI;

					object.scale.x = Math.random() * 2 + 1;
					object.scale.y = Math.random() * 2 + 1;
					object.scale.z = Math.random() * 2 + 1;

					object.castShadow = true;
					object.receiveShadow = true;

					scene.add( object );

					objects.push( object );

				}

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setClearColor( 0xf0f0f0 );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.sortObjects = false;

				renderer.shadowMap.enabled = true;
				renderer.shadowMap.type = THREE.PCFShadowMap;

				container.appendChild( renderer.domElement );

				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://threejs.org" target="_blank">three.js</a> webgl - draggable cubes';
				container.appendChild( info );

				stats = new Stats();
				container.appendChild( stats.dom );

				renderer.domElement.addEventListener( 'mousemove', onDocumentMouseMove, false );
				renderer.domElement.addEventListener( 'mousedown', onDocumentMouseDown, false );
				renderer.domElement.addEventListener( 'mouseup', onDocumentMouseUp, false );

				//

				window.addEventListener( 'resize', onWindowResize, false );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			function onDocumentMouseMove( event ) {

				event.preventDefault();

				mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
				mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;

				raycaster.setFromCamera( mouse, camera );

				if ( SELECTED ) {

					if ( raycaster.ray.intersectPlane( plane, intersection ) ) {

						SELECTED.position.copy( intersection.sub( offset ) );

					}

					return;

				}

				var intersects = raycaster.intersectObjects( objects );

				if ( intersects.length > 0 ) {

					if ( INTERSECTED != intersects[ 0 ].object ) {

						if ( INTERSECTED ) INTERSECTED.material.color.setHex( INTERSECTED.currentHex );

						INTERSECTED = intersects[ 0 ].object;
						INTERSECTED.currentHex = INTERSECTED.material.color.getHex();

						plane.setFromNormalAndCoplanarPoint(
							camera.getWorldDirection( plane.normal ),
							INTERSECTED.position );

					}

					container.style.cursor = 'pointer';

				} else {

					if ( INTERSECTED ) INTERSECTED.material.color.setHex( INTERSECTED.currentHex );

					INTERSECTED = null;

					container.style.cursor = 'auto';

				}

			}

			function onDocumentMouseDown( event ) {

				event.preventDefault();

				raycaster.setFromCamera( mouse, camera );

				var intersects = raycaster.intersectObjects( objects );

				if ( intersects.length > 0 ) {

					controls.enabled = false;

					SELECTED = intersects[ 0 ].object;

					if ( raycaster.ray.intersectPlane( plane, intersection ) ) {

						offset.copy( intersection ).sub( SELECTED.position );

					}

					container.style.cursor = 'move';

				}

			}

			function onDocumentMouseUp( event ) {

				event.preventDefault();

				controls.enabled = true;

				if ( INTERSECTED ) {

					SELECTED = null;

				}

				container.style.cursor = 'auto';

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				controls.update();

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>