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   源码介绍

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

		<script>

			var camera, scene, renderer;

			var fov = 70,
			texture_placeholder,
			isUserInteracting = false,
			onMouseDownMouseX = 0, onMouseDownMouseY = 0,
			lon = 0, onMouseDownLon = 0,
			lat = 0, onMouseDownLat = 0,
			phi = 0, theta = 0;

			init();
			animate();

			function init() {

				var container, mesh;

				container = document.getElementById( 'container' );

				camera = new THREE.PerspectiveCamera( fov, window.innerWidth / window.innerHeight, 1, 1100 );
				camera.target = new THREE.Vector3( 0, 0, 0 );

				scene = new THREE.Scene();

				var geometry = new THREE.SphereGeometry( 500, 60, 40 );
				geometry.applyMatrix( new THREE.Matrix4().makeScale( -1, 1, 1 ) );

				var material = new THREE.MeshBasicMaterial( {
					map: THREE.ImageUtils.loadTexture( 'images/we.jpg' )
				} );

				mesh = new THREE.Mesh( geometry, material );
				
				scene.add( mesh );

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

				document.addEventListener( 'mousedown', onDocumentMouseDown, false );
				document.addEventListener( 'mousemove', onDocumentMouseMove, false );
				document.addEventListener( 'mouseup', onDocumentMouseUp, false );
				document.addEventListener( 'mousewheel', onDocumentMouseWheel, false );
				document.addEventListener( 'DOMMouseScroll', onDocumentMouseWheel, false);

				//

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

			}

			function onWindowResize() {

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

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

			}

			function onDocumentMouseDown( event ) {

				event.preventDefault();

				isUserInteracting = true;

				onPointerDownPointerX = event.clientX;
				onPointerDownPointerY = event.clientY;

				onPointerDownLon = lon;
				onPointerDownLat = lat;

			}

			function onDocumentMouseMove( event ) {

				if ( isUserInteracting ) {

					lon = ( onPointerDownPointerX - event.clientX ) * 0.1   onPointerDownLon;
					lat = ( event.clientY - onPointerDownPointerY ) * 0.1   onPointerDownLat;

				}
			}

			function onDocumentMouseUp( event ) {

				isUserInteracting = false;

			}

			function onDocumentMouseWheel( event ) {

				// WebKit

				if ( event.wheelDeltaY ) {

					fov -= event.wheelDeltaY * 0.05;

				// Opera / Explorer 9

				} else if ( event.wheelDelta ) {

					fov -= event.wheelDelta * 0.05;

				// Firefox

				} else if ( event.detail ) {

					fov  = event.detail * 1.0;

				}

				camera.projectionMatrix.makePerspective( fov, window.innerWidth / window.innerHeight, 1, 1100 );
				render();

			}

			function animate() {

				requestAnimationFrame( animate );
				render();

			}

			function render() {

				lat = Math.max( - 85, Math.min( 85, lat ) );
				phi = THREE.Math.degToRad( 90 - lat );
				theta = THREE.Math.degToRad( lon );

				camera.target.x = 500 * Math.sin( phi ) * Math.cos( theta );
				camera.target.y = 500 * Math.cos( phi );
				camera.target.z = 500 * Math.sin( phi ) * Math.sin( theta );

				camera.lookAt( camera.target );

				renderer.render( scene, camera );

			}

		</script>