3D機房系統(tǒng)是最近用戶的需求,通過相關了解最后使用Three.js,也發(fā)現(xiàn)最近有東西可以寫出來分享：

分步實現(xiàn)3D效果

一 . 初始化3D模型參數(shù)

//參數(shù)處理 this.option = new Object(); this.option.antialias = option.antialias || true; this.option.clearCoolr = option.clearCoolr || 0x1b7ace; this.option.showHelpGrid = option.showHelpGrid || false; //對象 this.id = id; this.width = width(); this.height = height(); this.renderer = null;//渲染器 this.scene = null;//場景 this.camera = null;//攝像機 this.selected=null; this.objects = []; this.mouseClick = new THREE.Vector2(); this.raycaster = new THREE.Raycaster(); this.controls = null;//鼠標控制器 this.trsnaformControls = null;//鼠標控制器 this.dragcontrols = null; this.objList = json.objects;//對象列表 this.eventList = json.events;//事件對象列表 this.dragList = []; this.objectStatusList = {}; this.clickList = []; var that = this;

對于一些需要使用的參數(shù),開始加載進行初始化操作。

二 . 開始搭建場景

搭建場景包含一些具體的初始化操作　一些初始化方法(之后才對具體方法加以說明)：

var that = this; room3dObj = that; that.initThree(that.id); //初始化渲染器 that.initCamera(); //初始化攝像機 that.initScene();//創(chuàng)建場景 that.initHelpGrid();//創(chuàng)建網(wǎng)格 that.initLight();//燈光布置 //添加3D對象 $.each(that.objList, function (index,obj) { that.InitAddObject(obj);//添加對象到場景中 }); that.initMouseCtrl();//創(chuàng)建鼠標控制器 that.animation();//循環(huán)渲染界面

三 . 初始化渲染器

渲染器 WebGLRenderer　定義語法：

var that = this; that.renderer = new THREE.WebGLRenderer({ alpha: true, antialias: that.option.antialias }); that.renderer.setSize(that.width, that.height); $(“#” + that.id).append(that.renderer.domElement); that.renderer.setClearColor(that.option.clearCoolr, 1.0); that.renderer.shadowMap.enabled = true; that.renderer.shadowMapSoft = true; //事件 that.renderer.domElement.addEventListener(‘mousedown',that.onDocumentMouseDown, false); that.renderer.domElement.addEventListener(‘mousemove',that.onDocumentMouseMove, false);

四 . 初始化攝像機

采用PerspectiveCamera 相機：

var that = this;  that.camera = new THREE.PerspectiveCamera(45, that.width / that.height, 1, 100000);  that.camera.name = 'mainCamera';  that.camera.position.x =0;  that.camera.position.y =2000;  that.camera.position.z =1800;  that.camera.up.x = 0;  that.camera.up.y =1;  that.camera.up.z =0;  that.camera.lookAt({ x: 100, y: 0, z: 100 });  that.objects.push(that.camera);  that.dragList.push(that.camera);  that.clickList.push(that.camera);