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今天一个朋友需要一个orb的three场景，为了更多对threeJS感兴趣的同学，特此写了一个小小的Demo模板。
本模板的基本功能包括：1.灯光 2.渲染器 3.鼠标控制 4.简单球形（如果是模型，需要添加加载对应模型格式的加载器，加载好模型也可以用本模板） 5.天空盒子 6.自动旋转
效果图：
代码：
<html><head><title>threeJS模板</title><style>body {background-color: #000;margin: 0px;overflow: hidden;}#WebGL {width: 100%;height: 100%;position: absolute;left: 0;top: 0;z-index: 999;}</style></head><body><script src="http://libs.baidu.com/jquery/2.0.0/jquery.js"></script><script src="three.js"></script><script src="OrbitControls.js"></script><div id="WebGL"></div><script>'use strict';var container, camera, scene, renderer, geometry, material, controls; //常用变量var spotLight, mesh; //自定义对象变量var target = new THREE.Vector3(0, 30, 0);var webGLW = $('#WebGL').width();var webGLH = $('#WebGL').height();init();animate();function init() {container = document.getElementById('WebGL');rendererScene(); //场景渲染sceneBackground();camera = new THREE.PerspectiveCamera(40, window.innerWidth / window.innerHeight, 0.1, 10000);camera.position.set(0, 50, -200);camera.lookAt(target);plane()地面lights(); //灯光：聚光灯loadModel(); //添加模型OrbitControls(camera, renderer); //OrbitControls控件模块，90版本鼠标右键上下是移动，96版本之后右键上下是缩放window.addEventListener('resize', onWindowResize, false); //监听屏幕变化}function sceneBackground() {scene = new THREE.Scene();// scene.background = new THREE.Color(0xcfcfcf);//可以用图片代替作为背景var path = './sky/';var format = '.jpg';new THREE.CubeTextureLoader().load([path + 'px' + format, path + 'nx' + format, //右左path + 'py' + format, path + 'ny' + format, //上下path + 'pz' + format, path + 'nz' + format //前后], function (res) {scene.background = res;});// // scene.fog = new THREE.Fog(0xa0a0a0, 200, 1000); //雾}function plane() {// 地面let grid_mesh = new THREE.Mesh(new THREE.PlaneBufferGeometry(200, 200), new THREE.MeshPhongMaterial({color: 0x999999,// depthWrite: false}));grid_mesh.rotation.x = -Math.PI / 2;grid_mesh.receiveShadow = true;scene.add(grid_mesh);var grid = new THREE.GridHelper(200, 20, 0x000000, 0x000000);grid.material.opacity = 0.2;grid.material.transparent = true;scene.add(grid);}function lights() { //光影自己改哦var ambient = new THREE.AmbientLight(0xffffff);scene.add(ambient);//聚光灯//SpotLight( color：颜色, intensity：强度, distance：发光距离, angle：角度, penumbra：边缘范围, decay：衰减 )spotLight = new THREE.SpotLight(0xffffff, 1);spotLight.position.set(0, 120, 0);spotLight.angle = Math.PI / 6;spotLight.penumbra = 0.05; //边缘范围，反比spotLight.decay = 2; //衰减系数，反比spotLight.distance = 400; //发光距离spotLight.castShadow = true; //阴影spotLight.shadow.mapSize.width = 1024;spotLight.shadow.mapSize.height = 1024;spotLight.shadow.camera.near = 10; //近截面spotLight.shadow.camera.far = 250;scene.add(spotLight);}function lightsHelper(lightsObject) {// 聚光灯显示助手SpotLightHelper( light:灯光, color：颜色 )var lightHelper = new THREE.SpotLightHelper(lightsObject, 0xdfdfdf);scene.add(lightHelper);var mesh = new THREE.Mesh(new THREE.PlaneBufferGeometry(100, 100), new THREE.MeshPhongMaterial({color: 0x9cfcf99,depthWrite: false}));mesh.rotation.x = -Math.PI / 2;mesh.position.set(0, -20, 0)mesh.receiveShadow = true;scene.add(mesh);}function loadModel() { //模型mesh = new THREE.Mesh(new THREE.SphereBufferGeometry(20, 16, 8),new THREE.MeshBasicMaterial({color: 0xffffff,wireframe: true}));mesh.position.set(0, 30, 0)scene.add(mesh);}function onWindowResize() {camera.aspect = window.innerWidth / window.innerHeight;camera.updateProjectionMatrix();renderer.setSize(window.innerWidth, window.innerHeight);}function rendererScene() {renderer = new THREE.WebGLRenderer({antialias: true});renderer.setPixelRatio(window.devicePixelRatio);renderer.setSize(window.innerWidth, window.innerHeight);renderer.shadowMap.enabled = true;renderer.shadowMap.type = THREE.PCFSoftShadowMap;renderer.gammaInput = true;renderer.gammaOutput = true;container.appendChild(renderer.domElement);}function OrbitControls(camera, renderer) {//OrbitControls控件操作模块controls = new THREE.OrbitControls(camera, renderer.domElement);controls.target = target; //控制的targetcontrols.autoRotate = true; //是否自动旋转controls.autoRotateSpeed = 0.5; //自动旋转速度，正比}function animate() {requestAnimationFrame(animate);if (controls) controls.update();renderer.render(scene, camera);};</script></body></html>
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