使用three.js(webgl)搭建智慧楼宇、设备检测、数字孪生——第十三课

　　老子云：有道无术，术尚可求，有术无道,止于术。

　　咱开篇引用老子的话术，也没其它意思，只是最近学习中忽有感悟，索性就写了上来。

这句话用现代辩证思维理解，这里的”道“ 大抵是指方法论，解决大部分问题的一般发展规律，例如学习的方法，解决问题的方法，获取知识的方法。而这里的”术“就可以理解为解决具体问题的技术，例如，一门手艺，一项专业，一个技能等。老子的意思是要掌握一般事物的发展规律...

学习技术，也是一样，比如咱最近专注的3D技术，往行而上了说，道在于实践中求知的方法论，术在于熟练并应用技术的能力。而往行而下了讲，道在于3D具体执行的原理（了解掌握webgl），术则在于封装好的库的应用（了解掌握three.js）

不过现在静下心，看文字的很少了，上面说教了这么一堆废话，我也全当一说，你如读了，也权当一乐。要是有那么一点赞同，姑且也就这么滴吧。

序：

　　最近也很长时间没有记一些博文了，翻了一下之前的项目，重新以现在的角度审度之前的代码，看看有没有啥可以提炼，可以改进的点。温故而知新吗。

　　看自己之前写的代码，有些地方能发现一些惊喜，但大部分都是惊吓，都是写了啥啊，咋当时就这么写了，大多时候都是满脸的鄙夷。

　　这个项目还是好久前的项目，具体时候，不太记得了，是给杭州的一个泵业小镇做的智慧楼宇。当时说是智慧楼宇，但是监控的设备，并没有那么多。估计也是一个试点项目吧。

　　智慧楼宇的项目做过好多个，可以看看我之前的一些案例课程：
　　　　物联网3D，物业基础设施3D运维，使用webgl(three.js)与物联网设备结合案例。搭建智慧楼宇，智慧园区，3D园区、3D物业设施，3D楼宇管理系统——第八课

　　　　使用webgl(three.js)搭建3D智慧园区、3D大屏，3D楼宇，智慧灯杆三维展示，3D灯杆，web版3D,bim管理系统——第六课

　　闲话少序，咱么切入正题。

一、整体效果

　　首先我们先看一下整体的建模项目效果,如下：

二、功能展示

　　功能还是比较简单的，无非是一些多角度展示与简单几种设备检测

2.1、视角切换

视角切换比较再技术上实现比较简单，主要是改变主摄像机camera的属性

在场景中调整几个固定的角度，然后提取摄像机的属性值，再跟视角按钮做关联，这样就可以简单实现外场的视角切换了。

2.2、楼层切换

楼层切换稍微复杂一些，这里主要使用了按需加载，建模时也要考虑到具体场景的应用

楼层切换，首先考虑的是楼层再何时加载，如果一开始全部预加载好，这无疑是对性能与速度的浪费，其次是加载后是否需要销毁。

例如上图，场景复原后，内部楼层是否再可视范围内，对于webgl来说，在场景内的模型，都是需要进行计算绘制的，不管是否被遮挡。

再如上图，再次调用打开楼层时，如何处理动画，如何节约资源。这些都是主要的技术点。我们后面节点着重讲解方法。这里着重介绍功能

2.3、设备监控

智慧楼宇，数字孪生，主要核心在于采集端数据跟展示端数据的关联控制。

如上图 设备与楼层关联，定位某种类型设备时，自动展开楼层。

三、技术讲解

3.1、建模

　　建模除了固有的特效模型需要处理外，其它的就需要根据业务逻辑对模型进行分解，归类，本着不浪费新能，极致加载的原则。例如这个项目，我们模型分解如下：

　　3.1.1外立面模型框架

初见的场景，只做外立面模型，不做内部模型

{ "show": true, "uuid": "", "name": "bout_f13_0", "objType": "ExtrudeGeometry", "position": { "x": 2117.824, "y": 5950.545, "z": 2309.159 }, "style": { "skinColor": 16711680, "skin": { "skin_up": { "skinColor": 3911420, "materialType": "lambert", "side": 1, "opacity": 1, "imgurl": "../img/3dImg/floor.jpg", "repeatx": true, "width": 0.005, "repeaty": true, "height": 0.005, "envMap": { "name": "skybox", "reflectivity": 0.4, "refractionRatio": 0.4, "combine": "" } }, "skin_down": { "skinColor": 16711680, "side": 1, "opacity": 1 }, "skin_side": { "skinColor": 846790, "side": 2, "opacity": 1 } } }, "scale": { "x": 1, "y": 1, "z": 1 }, "shapeParm": { "points": [{ "x": 0, "y": 0, "type": "nomal" }, { "x": 0, "y": 100, "type": "nomal" }, { "x": 100, "y": 100, "type": "nomal" }, { "x": 100, "y": 2300, "type": "nomal" }, { "x": -50, "y": 2300, "type": "nomal" }, { "x": -50, "y": 2450, "type": "nomal" }, { "x": -2500, "y": 2450, "type": "nomal" }, { "x": -2500, "y": 2300, "type": "nomal" }, { "x": -2650, "y": 2300, "type": "nomal" }, { "x": -2650, "y": 100, "type": "nomal" }, { "x": -2500, "y": 100, "type": "nomal" }, { "x": -2500, "y": 0, "type": "nomal" }], "holes": [] }, "extrudeSettings": { "amount": 1, "curveSegments": 6, "steps": 1, "bevelEnabled": false, "bevelThickness": 1, "bevelSize": 1, "bevelSegments": 1, "extrudePathPoints": [] }, "showSortNub": 5, "customType1": "", "customType2": "", "animation": null, "dbclickEvents": null, "rotation": [{ "direction": "x", "degree": -1.5707963267948966 }, { "direction": "y", "degree": 0 }, { "direction": "z", "degree": 0 }], "BindDevId": null, "BindDevName": null, "devInfo": null, "BindMeteId": null, "BindMeteName": null }

3.1.2、独立楼层模型

楼层模型按需加载，即用到时再加载，看不到时直接不加载或者隐藏，模型代码如下：

[{"show":true,"uuid":"","name":"build_f2_4","objType":"ExtrudeGeometry","position":{"x":-994.227,"y":810,"z":-54.692},"style":{"skinColor":16711680,"skin":{"skin_up":{"skinColor":3911935,"side":0,"opacity":0},"skin_down":{"skinColor":16711680,"side":1,"opacity":1},"skin_side":{"skinColor":2279636,"side":2,"opacity":0.8,"imgurl":"../img/3dImg/dl01.png","repeatx":true,"width":0.0001,"repeaty":true,"height":0.003}}},"scale":{"x":0.35,"y":0.35,"z":1},"shapeParm":{"points":[{"x":-11200,"y":4620,"type":"nomal"},{"x":-11580,"y":4620,"type":"absarc","radius":400,"startAngle":0,"endAngle":1.3962634015954636,"Clockwise":false},{"x":-13000,"y":5380,"type":"nomal"},{"x":-13300,"y":4600,"type":"absarc","radius":810,"startAngle":1.5707963267948966,"endAngle":2.2689280275926285,"Clockwise":false},{"x":-15400,"y":3780,"type":"nomal"},{"x":-15000,"y":3260,"type":"absarc","radius":620,"startAngle":2.6179938779914944,"endAngle":3.9269908169872414,"Clockwise":false},{"x":-13700,"y":1200,"type":"nomal"},{"x":-13150,"y":1710,"type":"absarc","radius":700,"startAngle":4.363323129985823,"endAngle":5.93411945678072,"Clockwise":false},{"x":-12170,"y":2240,"type":"nomal"}],"holes":[]},"extrudeSettings":{"amount":400,"curveSegments":6,"steps":1,"bevelEnabled":false,"bevelThickness":1,"bevelSize":1,"bevelSegments":1,"extrudePathPoints":[]},"showSortNub":6,"customType1":"","customType2":"","animation":null,"dbclickEvents":null,"rotation":[{"direction":"x","degree":-1.5707963267948963},{"direction":"y","degree":0},{"direction":"z","degree":0}],"BindDevId":null,"BindDevName":null,"devInfo":null,"BindMeteId":null,"BindMeteName":null},{"show":true,"uuid":"","name":"build_f1","objType":"ExtrudeGeometry","position":{"x":7715.604,"y":30,"z":2309.159},"style":{"skinColor":16711680,"skin":{"skin_up":{"skinColor":1129349,"side":0,"opacity":0.8,"imgurl":"../img/3dImg/floor1.jpg","repeatx":true,"width":0.001,"repeaty":true,"height":0.001},"skin_down":{"skinColor":16711680,"side":1,"opacity":1},"skin_side":{"skinColor":16777215,"side":2,"opacity":0.8,"imgurl":"../img/3dImg/dl01.png","repeatx":true,"width":0.0001,"repeaty":true,"height":0.003}}},"scale":{"x":1,"y":1,"z":1},"shapeParm":{"points":[{"x":0,"y":0,"type":"nomal"},{"x":0,"y":5000,"type":"nomal"},{"x":-7500,"y":5000,"type":"nomal"},{"x":-7500,"y":4600,"type":"nomal"},peParm":{"points":[{"x":0,"y":0,"type":"nomal"},{"x":0,"y":100,"type":"nomal"},{"x":100,"y":100,"type":"nomal"},{"x":100,"y":2300,"type":"nomal"},{"x":-50,"y":2300,"type":"nomal"},{"x":-50,"y":2450,"type":"nomal"},{"x":-2500,"y":2450,"type":"nomal"},{"x":-2500,"y":2300,"type":"nomal"},{"x":-2650,"y":2300,"type":"nomal"},{"x":-2650,"y":100,"type":"nomal"},{"x":-2500,"y":100,"type":"nomal"},{"x":-2500,"y":0,"type":"nomal"}],"holes":[]},"extrudeSettings":{"amount":300,"curveSegments":6,"steps":1,"bevelEnabled":false,"bevelThickness":1,"bevelSize":1,"bevelSegments":1,"extrudePathPoints":[]},"showSortNub":5,"customType1":"","customType2":"","animation":null,"dbclickEvents":null,"rotation":[{"direction":"x","degree":-1.5707963267948963},{"direction":"y","degree":0},{"direction":"z","degree":0}],"BindDevId":null,"BindDevName":null,"devInfo":null,"BindMeteId":null,"BindMeteName":null},{"show":true,"uuid":"","name":"build_f5","objType":"ExtrudeGeometry","position":{"x":2117.824,"y":2080,"z":2309lickEvents":null,"rotation":[{"direction":"x","degree":-1.5707963267948963},{"direction":"y","degree":0},{"direction":"z","degree":0}],"BindDevId":null,"BindDevName":null,"devInfo":null,"BindMeteId":null,"BindMeteName":null},{"show":true,"uuid":"","name":"build_f13","objType":"ExtrudeGeometry","position":{"x":1557.594,"y":6080,"z":1780.258},"style":{"skinColor":16711680,"skin":{"skin_up":{"skinColor":1129349,"side":0,"opacity":0.8,"imgurl":"../img/3dImg/floor1.jpg","repeatx":true,"width":0.001,"repeaty":true,"height":0.001},"skin_down":{"skinColor":16711680,"side":1,"opacity":1},"skin_side":{"skinColor":16777215,"side":2,"opacity":0.8,"imgurl":"../img/3dImg/dl01.png","repeatx":true,"width":0.0001,"repeaty":true,"height":0.003}}},"scale":{"x":1,"y":1,"z":1},"shapeParm":{"points":[{"x":0,"y":1500,"type":"nomal"},{"x":-1500,"y":1500,"type":"nomal"},{"x":-1500,"y":0,"type":"nomal"},{"x":0,"y":0,"type":"nomal"}],"holes":[]},"extrudeSettings":{"amount":300,"curveSegments":6,"steps":1,"bevelEnabled":false,"bevelThickness":1,"bevelSize":1,"bevelSegments":1,"extrudePathPoints":[]},"showSortNub":5,"customType1":"","customType2":"","animation":null,"dbclickEvents":null,"rotation":[{"direction":"x","degree":-1.5707963267948963},{"direction":"y","degree":0},{"direction":"z","degree":0}],"BindDevId":null,"BindDevName":null,"devInfo":null,"BindMeteId":null,"BindMeteName":null}]

3.1.3、具体楼层房间模型

这部分模型主要是对楼层模型进行分隔，楼层外围可以复制，内部不同，这样我们既可以通过分开建模的方式，实现控制

模型代码如下：

[ { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.jpg" }, "skin_left": { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.jpg" }, "skin_right": { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.jpg" } } }, "showSortNub": 19, "customType1": "", "customType2": "", "animation": null, "dbclickEvents": null, "rotation": [{ "direction": "x", "degree": 0 }, { "direction": "y", "degree": 0 }, { "direction": "z", "degree": 0 }], "thick": null, "scale": { "x": 1, "y": 1, "z": 1 }, "BindDevId": null, "BindDevName": null, "devInfo": null, "BindMeteId": null, "BindMeteName": null }, { "show": true, "uuid": "", "name": "br_f1_w_17", "objType": "cube2", "length": 900, "width": 15, "height": 300, "x": 889.653, "y": 136.966, "z": -315.791, "style": { "skinColor": 16777215, "skin": { "skin_up": { "skinColor": 50175, "side": 1, "opacity": 1 }, "skin_down": { "skinColor": 50175, "side": 1, "opacity": 1 }, "skin_fore": { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.jpg" }, "skin_behind": { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.jpg" }, "skin_left": { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.jpg" }, "skin_right": { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.jpg" } } }, "showSortNub": 19, "customType1": "", "customType2": "", "animation": null, "dbclickEvents": null, "rotation": [{ "direction": "x", "degree": 0 }, { "direction": "y", "degree": 0 }, { "direction": "z", "degree": 0 }], "thick": null, "scale": { "x": 1, "y": 1, "z": 1 }, "BindDevId": null, "BindDevName": null, "devInfo": null, "BindMeteId": null, "BindMeteNa 1 }, " mgurl": "../img/3dImg/inside_lightmap.jpg" } } }, "showSortNub": 19, "customType1": "", "customType2": "", "animation": null, "dbclickEvents": null, "rotation": [{ "direction": "x", "degree": 0 }, { "direction": "y", "degree": 0 }, { "direction": "z", "degree": 0 }], "thick": null, "scale": { "x": 1, "y": 1, "z": 1 }, "BindDevId": null, "BindDevName": null, "devInfo": null, "BindMeteId": null, "BindMeteName": null }, { "show": true, "uuid": "", "name": "br_f1_w_36", "objType": "cube2", "length": 700, "width": 15, "height": 300, "x": 5979.223, "y": 136.966, "z": -2274.46, "style": { "skinColor": 16777215, "skin": { "skin_up": { "skinColor": 50175, "side": 1, "opacity": 1 }, "skin_down": { "skinColor": 50175, "side": 1, "opacity": 1 }, "skin_fore": { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.jpg" }, "skin_behind": { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.jpg" }, "skin_left": { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.jpg" }, "skin_right": { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.jpg" } } }, "showSortNub": 19, "customType1": "", "customType2": "", "animation": null, "dbclickEvents": null, "rotation": [{ "direction": "x", "degree": 0 }, { "direction": "y", "degree": 0 }, { "direction": "z", "degree": 0 }], "thick": null, "scale": { "x": 1, "y": 1, "z": 1 }, "BindDevId": null, "BindDevName": null, "devInfo": null, "BindMeteId": null, "BindMeteName": null }, { "show": true, "uuid": "", "name": "br_f1_w_37", "objType": "cube2", "length": 15, "width": 400, "height": 300, "x": 6328.26, "y": 136.966, "z": -2469.455, "style": { "skinColor": 16777215, "skin": { "skin_up": { "skinColor": 50175, "side": 1, "opacity": 1 }, "skin_down": { "skinColor": 50175, "side": 1, "opacity": 1 }, "skin_fore": { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.jpg" }, "skin_behind": { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.jpg" }, "skin_left": { "skinColor": 50175, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/inside_lightmap.j egree": 0 }], "thick": null, "scale": { "x": 1, "y": 1, "z": 1 }, "BindDevId": null, "BindDevName": null, "devInfo": null, "BindMeteId": null, "BindMeteName": null }, { "name": "dev_f1_wsd_2OBJCREN1", "objType": "cylinder", "radiusTop": 16, "radiusBottom": 20, "height": 100, "segmentsX": 24, "segmentsY": 0, "openEnded": false, "position": { "x": -61.251, "y": 120.45, "z": 5.971 }, "scale": { "x": 1, "y": 1, "z": 1 }, "rotation": [{ "direction": "x", "degree": 0 }, { "direction": "y", "degree": 0 }, { "direction": "z", "degree": 0 }], "style": { "skinColor": 16776960, "skin": { "skin_up": { "skinColor": 16777215, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/wsd/wsd_3.jpg" }, "skin_down": { "skinColor": 16777215, "side": 1, "opacity": 1 }, "skin_side": { "skinColor": 16777215, "opacity": 1, "imgurl": "../img/3dImg/wsd/wsd_4.jpg", "repeatx": true, "width": 3, "repeaty": true, "height": 1 } } }, "showSortNub": 7, "show": true, "customType1": "", "customType2": "", "animation": null, "dbclickEvents": null, "BindDevId": null, "BindDevName": null, "devInfo": null, "BindMeteId": null, "BindMeteName": null }, { "show": true, "uuid": "", "name": "dev_f1_wsd_2OBJCREN2", "objType": "cube2", "length": 210, "width": 20, "height": 160, "x": 0, "y": 0, "z": -61.333, "style": { "skinColor": 16777215, "skin": { "skin_up": { "skinColor": 16777215, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/wsd/wsd_3.jpg" }, "skin_down": { "skinColor": 16777215, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/wsd/wsd_3.jpg" }, "skin_fore": { "skinColor": 16777215, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/wsd/wsd_1.jpg" }, "skin_behind": { "skinColor": 16777215, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/wsd/wsd_1.jpg" }, "skin_left": { "skinColor": 16777215, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/wsd/wsd_1.jpg" }, "skin_right": { "skinColor": 16777215, "side": 1, "opacity": 1, "imgurl": "../img/3dImg/wsd/wsd_1.jpg" } } }, "showSortNub": 6, "customType1": "", "customType2": "", "animation": null, "dbclickEvents": null, "rotation": [{ "direction": "x", "degree": 0 }, { "direction": "y", "degree": 0 }, { "direction": "z", "degree": 0 }], "thick": null, "scale": { "x": 1, "y": 1, "z": 1 }, "BindDevId": null, "BindDevName": null, "devInfo": null, "BindMeteId": null, "BindMeteName": null }], "showSortNub": 43, "customType1": "", "customType2": "", "animation": null, "dbclickEvents": null, "BindDevId": null, "BindDevName": null, "devInfo": null, "BindMeteId": null, "BindMeteName": null }]

3.2、逻辑代码

上面讲过模型建模时的注意事项，下面就是对分解好的模型进行应用。

　　3.2.1、视角切换

　　主要调用切换视角得方法WT3DObj.commonFunc.changeCameraPosition

   $(".floorNub").click(function () {//2D页面按钮事件绑定
        $(".floorNub").attr("class", "floorNub")
        $(this).attr("class", "floorNub action");
        var id= $(this).attr("id");
        if(indexpage.btn_action){
            layer.msg("动画执行中...");
            return;
        }
        indexpage.btn_action = true;
        switch (id) {
            case "Btn_1"://视角一
                {
                    WT3DObj.commonFunc.changeCameraPosition( {x: 9487.603167348385, y: 8719.775524425808, z: 10591.130126266144},{x: 4356.640551613654, y: 4840.572823023986, z: 3600.0637528600773}, 1000,
                         function () {
                             indexpage.btn_action = false;
                         });
                }
                break;}}

});

　　3.2.2、楼层分解

　　　　//出发切换楼层方法

    case "Btn_5"://楼层一
                {

                    modelBussiness.backToAllBuild(function () {
                        modelBussiness.showFloor(1);
                        setTimeout(function () {
                            indexpage.btn_action = false;
                        }, 1000);
                    });
                }
                break;

　　调用showFloor方法，方法具体如下

ModelBussiness.prototype.showFloor = function (floornub) {

    modelBussiness.currentState = "rooms";
    WT3DObj.IsStepFirstBackSide = true;
    //显示楼层
    modelBussiness.clickFloorAnimation(floornub);
    layer.closeAll();
}

这里主要调用clickFloorAnimation方法，并且记录当前状态

ModelBussiness.prototype.clickFloorAnimation = function (_floorNub) {
    modelBussiness.loadFloorRooms(_floorNub);//加载楼层
     modelBussiness.showFloorAnimation(_floorNub);//显示楼层
    var floors = modelBussiness.InfloorBuildCache;

    var position = { y: 1}
    new showSlowly(position).to({
        y: 500,
    }, 500).onUpdate(function () {
        var _this = this;
        $.each(floors, function (_i, _o) {
            var _fnub = parseInt(_o.name.replace("build_f", ""));
            if (_fnub > _floorNub) {
            _o.position.y = _o.oldPositiony + (_fnub - _floorNub) * _this.y;
            }
        })
    }).onComplete(function () {
        var oobjs = [];
        $.each(floors, function (_i, _o) {
            var _fnub = parseInt(_o.name.replace("build_f", ""));
            if (_fnub > _floorNub) {
                oobjs.push(_o);
            }
        });
        WT3DObj.commonFunc.changeObjsOpacity(oobjs, 1, 0.01, 1000, function () {
            $.each(oobjs, function (_i, _o) {
                _o.visible = false;
                _o.position.y = 100000;
            });
        });
        if(_floorNub<=3){
            WT3DObj.commonFunc.changeCameraPosition({ x: 3873, y: 8547 + (_floorNub - 1) * 400, z: 5275 },
                  { x: 3639, y: 3780 + (_floorNub - 1) * 400, z: 2556 }, 1000, function () { });
        } else {
            WT3DObj.commonFunc.changeCameraPosition({ x: 756.8552720903069, y: 4080 + (_floorNub - 1) * 400, z: 3005.0971402300224 }, { x: 778.609209478186, y: (_floorNub - 1) * 400, z: 1208.2712831508117 }, 1000,
             function () {
             });
        }
        var position = { y: 500 }
        new showShowly(position).to({
            y: 2000,
        }, 1000).onUpdate(function () {
            var _this = this;
            $.each(floors, function (_i, _o) {
                var _fnub = parseInt(_o.name.replace("build_f", ""));
                if (_fnub > _floorNub) {
                _o.position.y = _o.oldPositiony + (_fnub - _floorNub) * _this.y;
                _o.step2Positiony = _o.oldPositiony + (_fnub - _floorNub) * _this.y;
                }
            });
        }).onComplete(function () {

        }).start();
    }).start();
}

按需加载得方法，对不同楼层 按需加载对应得模型

ModelBussiness.prototype.loadFloorRooms = function (nub, floor) {
    var floorname = "build_f" + nub;
    if (nub == 2) {
        floorname += "_1";
    }
    var floor = WT3DObj.commonFunc.findObject(floorname);
    if (modelBussiness.RoomModels["f" + nub]){
        $.each(modelBussiness.RoomModels["f" + nub], function (_index, _obj) {
            _obj.visible = true;
            _obj.position.y = _obj.oldPositiony;
        });
        return;
    }
    if (nub >= 5) {
        var models = getF5Rooms();
        $.each(models, function (_index, _obj) {
            _obj.name = _obj.name.replace("br_f4_", "br_f" + nub+"_");
            if (_obj.name.indexOf("text") >= 0) {
                _obj.position.y = floor.position.y + 550;
            } else {
                if (_obj.position) {
                    _obj.position.y = floor.position.y+500;
                } else {
                    _obj.y = floor.position.y+150;
                }
            }
        });
        WT3DObj.commonFunc.loadModelsByJsons(models, { x: 0, y: 0, z: 0 }, { x: 0, y: 0, z: 0 }, true, function () {
            modelBussiness.RoomModels["f" + nub] = [];
            $.each(WT3DObj.scene.children, function (_index, _obj) {
                if (_obj.name.indexOf("br_f" + nub + "_w_") == 0 || _obj.name.indexOf("br_f" + nub + "_r_") == 0) {
                    _obj.oldPositiony = _obj.position.y;
                    modelBussiness.RoomModels["f" + nub].push(_obj);
                };
            });
        });
    } else {
        var models = window["getF"+nub+"Rooms"]();
        WT3DObj.commonFunc.loadModelsByJsons(models, { x: 0, y: 0, z: 0 }, { x: 0, y: 0, z: 0 }, true, function () {
            modelBussiness.RoomModels["f" + nub] = [];
            $.each(WT3DObj.scene.children, function (_index, _obj) {
                if (_obj.name.indexOf("br_f" + nub + "_w_") == 0 || _obj.name.indexOf("br_f" + nub + "_r_") == 0) {
                    _obj.oldPositiony = _obj.position.y;
                    modelBussiness.RoomModels["f" + nub].push(_obj);
                }
            });
        });
    }
}

楼层展开，虚化等动画统一展示方法：

ModelBussiness.prototype.showFloorAnimation = function (floornub) {
    modelBussiness.hidemodelsCache = null;
    modelBussiness.scaleModels = null;
    var hidemodeNames = ["bout_f13_2", "bout_f13_1", "bout_f13_1", "bout_f13_0", "bout_flow2_1", "bout_flow2_2", "bout_flow2_3"];
    for (var i = 1; i <= 12; i++) {

        hidemodeNames.push("build_out"+i);
    }
        var hidemodeModels = WT3DObj.commonFunc.findObjectsByNames(hidemodeNames);
        $.each(hidemodeModels, function (_index, _obj) {
            _obj.oldPositiony = _obj.position.y;
            _obj.visible = false;
            _obj.position.y = 200000;
        });
        var scaleModelNames = ["bout_39", "bout0_11", "bout_42", "bout_38", "bout_45", "bout_40", "bout_44", "bout_41", "bout_43"];
        var scaleModels = WT3DObj.commonFunc.findObjectsByNames(scaleModelNames);
        WT3DObj.commonFunc.changeObjsOpacity(scaleModels, 1, 0.01, 1000, function () {
            $.each(scaleModels, function (_index, _obj) {
                _obj.oldScaleX = _obj.scale.x;
                _obj.oldScaleY = _obj.scale.y;
                _obj.oldScaleZ = _obj.scale.z;
                if (["bout_39", "bout_38", "bout_40", "bout_41"].indexOf(_obj.name) >= 0) {
                    _obj.scale.y = floornub / 14
                }
                if (["bout_42", "bout_45", "bout_44", "bout_43", "bout0_11"].indexOf(_obj.name) >= 0) {
                    _obj.scale.z = floornub / 14
                }
                if ("bout0_11" == _obj.name) {
                    _obj.scale.z = (floornub - 3) / 11
                }
            });
            WT3DObj.commonFunc.changeObjsOpacity(scaleModels, 0.01, 1, 10, function () {
            });
        });
        modelBussiness.hidemodelsCache = hidemodeModels;
        modelBussiness.scaleModels = scaleModels;

}

　　 3.2.3、设备定位

　　定位具体设备，将楼层展开与主摄像机位置调整并用起来调用

      modelBussiness.backToAllBuild(function () {
                        modelBussiness.showFloor(4);//展开楼层4
                        setTimeout(function () {
　　　　　　　　　　　　　　　　　　//调整摄像机位置
                            WT3DObj.commonFunc.changeCameraPosition({x: 853.7726152337735, y: 3002.9928530489865, z: 2579.4120334043137},{x: 1732.9469861751966, y: 1855.692424929085, z: 1402.3507946674324}, 1000,
                    function () {
                        indexpage.btn_action = false;

                    });
                        }, 1000);
                    });

3.3、数据对接、展示

　　数据对接，主要是讲模型与设备数据id进行绑定，并且根据api进行调用

function W3DShowApi() { }

//显示设备自定义框
W3DShowApi.prototype.showDevWin = function (modelname) {
    console.log("显示楼层数字的自定义框");
    //这里的showHtml可以自定义

    var showHtml = "<div style='font-size:32px;color:white;text-align:center;line-height:90px;'>自定义内容:" + modelname + "</div > ";
    //这里的显示框大小可以自定义
    var area = ['auto', "100px"];//宽 高
    return {
        html: showHtml,
        area: area
    }
}
W3DShowApi.prototype.dbclickDevWin = function (modelname) {
    console.log("显示楼层数字的自定义框");
    //这里的showHtml可以自定义
    layer.msg("显示双击设备自定义框：" + modelname);
}

var w3DShowApi = new W3DShowApi();

我们这里弹窗使用了layerui的插件

ModelBussiness.prototype.showRoomMsg = function (_obj) {
    var showWindow = false;
    var showHtml = "<div></div>";
    var area = ["350px", "200px"];
    if (w3DShowApi) {
        var wparam = w3DShowApi.showDevWin(_obj.name);
        if (wparam) {
            showHtml = wparam.html;
            area = wparam.area;
            showWindow = true;
        }
    }
    if (!showWindow) {
        return;
    }
    modelBussiness.hasshowRoomMessage = false;
    modelBussiness.currentShowRoomText = _obj;
    //获取位置
    var position = {
        x: _obj.position.x,
        y: _obj.position.y,
        z: _obj.position.z,
    };
    //position.y += 150;
    var screenPostion = WT3DObj.transToScreenCoord(position);
    $("#MarkMessageHelper").remove();
    $("body").append("<div id='MarkMessageHelper' style='position:absolute;left:" + (screenPostion.x) + "px;top:" + screenPostion.y + "px;height:2px;width:2px;z-index:1000;'></div>");
    layer.closeAll();

    modelBussiness.currentShowRoomTipIndex = layer.tips(showHtml, '#MarkMessageHelper', {
        closeBtn: 1,
        shade: false,
        shadeClose: true,
        skin:"customskin",
        area: area,
        time: 0,//是否定时关闭，0表示不关闭
        cancel: function (index, layero) {
            modelBussiness.hasshowRoomMessage = false;
            layer.close(index);
            if (closeFunc) {
                closeFunc();
            }
        },
        success: function () {
            setTimeout(function () {
            modelBussiness.hasshowRoomMessage = true;
            }, 150);
        },
        tips: [1, "rgba(0,0,0,0.1)"] //还可配置颜色
    });
}

由于篇幅原因，这一课先介绍到这里

后面我将继续讲解用webgl 建立 3D隧道、3D桥梁、webgl实现三维隧道桥梁、three.js实现三维隧道桥梁、桥梁隧道三维应用炫酷效果等等

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