使用webgl(three.js)搭建一個3D智慧園區、3D建築，3D消防模擬，web版3D,bim管理系統——第四課（炫酷版一）

阿新 • • 發佈：2019-07-08

這節課我們主要講解園區三維視覺化炫酷感官技術方案

前言：

　　當基礎技術達到普及狀態，應用就趨向於極致，在三維視覺化領域也是這個道理。各大視覺化公司都追求美觀最大化，這時候美工的作用就不容忽視了。

　　背景說明：

　　　　A、經濟背景：經濟下行的大環境下，各大有社會責任的企業與部門開始拉動內需，擴大預算，向有技術有情懷的科技公司派送訂單，保證科技公司活下來，下一個科技風口能夠繼續戰鬥，國民經濟能夠挺住下行壓力。所以視覺化，科技風，炫酷風成為擴大預算的一項重要指標。（有錢）

　　　　B、技術背景：三維技術很早在遊戲方面就有應用，但是侷限於客戶端龐大，電腦硬體要求高，所以在行業應用方面一直沒有普及，而當前民眾用的電腦基本都帶有獨立顯示卡，包括市面上的手機也基本都帶有GPU處理器，這為三維技術普及與應用奠定了很好的基石。還有就是webgl技術的發明與普及，瀏覽器直接支援gpu加速，輕客戶端機制把一切封裝在瀏覽器沙盒中。使用者只需要解決業務相關的問題就可以。（有技術方案）

　　　　C、專案背景：與本專案相關的背景就是各大視覺化廠家發力做出越來越炫酷的效果，作為webgl愛好者，不能放過一切前沿的技術應用。著手研究與實施出炫酷效果，對於個人而言也是刻不容緩。（有人）

　　　　D、錢、技術、人都有了，just do it！！！

　　　　技術交流 [email protected]

一、閒話少敘，先看效果圖

1、外立面效果圖加周遭環境特效。

2、單獨樓層效果與過度動畫

3、室內效果

二、難點重點說明

炫酷的效果最終在於技術的熟練應用與設計師的強大腦洞

這裡再次強調美工不可忽視的作用，尊稱設計師。

效果好壞以及工作量的多少全憑設計師前期的工作，專業的人幹專業的事情，大部分程式猿沒有審美能力，這時候就靠設計師想象出炸天的效果。程式猿這時候利用自己的知識能力實現設計師的設想。

至於難點技術有粒子效果、著色器語言、線性代數與圖片的靈活應用、瓦片化載入等。

三、完成步驟

園區視覺化方案的實施跟真實建築樓宇的過程是一樣的。從設計到地基到建築，一步也不能少。一步也不能跳過

1、先設計模型

　　1.1、先設計，這裡設計師登場，首先設計師開啟腦洞，想象出一款炫酷的設計，與風格方案，然後與程式猿交涉，輸出程式猿需要的原圖。

　　1.2、開始“打地基”，根據設計師的設計，我們選的地基是科技虛幻話地基，就是科技網格

　　　　效果：

　　　　程式碼：

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　　　　技術點講解：

　　　　這裡面有兩種方案，1、用劃線的方式畫出網格，2、做一張網格透明圖片作為網格。我建議使用第一種方案，具體優點我們後續再講。

　　1.3、實現周遭環境

　　效果：

　　程式碼：

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　　難點講解：這裡面主要涉及到虛化處理，uv處理時計算位置、在合適的位置將透明值設定為0

1.4、新增道路特效

　　效果：

　　程式碼：

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　　難點：如何讓道路動起來，這裡我封裝了方法，具體如何封裝由於篇幅原因，只能下節課詳解，這節課主要講巨集觀搭建。

　　1.5、新增樓層

　　效果：

　　模型程式碼：

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null,"BindMeteId":null,"BindMeteName":null},{"show":true,"uuid":"","name":"b1_floor_2OBJCREN86","objType":"cube2","length":20,"width":5,"height":100,"x":-674.435,"y":124.455,"z":-905.836,"style":{"skinColor":16777215,"skin":{"skin_up":{"skinColor":1411309,"side":1,"opacity":1},"skin_down":{"skinColor":1411309,"side":1,"opacity":1},"skin_fore":{"skinColor":1411309,"side":1,"opacity":1},"skin_behind":{"skinColor":1411309,"side":1,"opacity":1},"skin_left":{"skinColor":1411309,"side":1,"opacity":1},"skin_right":{"skinColor":1411309,"side":1,"opacity":1}}},"showSortNub":23,"customType1":"","customType2":"","animation":null,"dbclickEvents":null,"rotation":[{"direction":"x","degree":0},{"direction":"y","degree":0.013962634015954637},{"direction":"z","degree":0}],"thick":null,"scale":{"x":1,"y":1,"z":1},"BindDevId":null,"BindDevName":null,"devInfo":null,"BindMeteId":null,"BindMeteName":null}],"showSortNub":1051,"customType1":"","customType2":"","animation":null,"dbclickEvents":null,"BindDevId":null,"BindDevName":null,"devInfo":null,"BindMeteId":null,"BindMeteName":null}

　　技術難點：瓦片式載入，初步載入時只做外立面的載入與渲染，當點選時再做內部載入

　　1.6、剩下部分全是樓層的疊加這裡不做累訴

　　最終達到如下效果即可

　　1.7、瓦片是載入房間模型

　　效果如下：　　

　　程式碼如下：

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2、業務邏輯

　　2.1、場景設想

　　　　我們設想場景是這樣的初始化時看到整個園區樓宇的概況，然後雙擊樓宇，載入單個樓層模型，再雙擊樓層、載入樓層內房間模型、雙擊房間、可以進入。

　　2.2、程式碼實現

function ModelBussiness() {
    this.currentAnimationState = 0;
}
ModelBussiness.prototype.init = function (roomName) {

    WT3DObj.mouseOverCallBack = this.mouseOverCallBack;
    //進入回撥
    WT3DObj.mouseOverInCallBack = this.mouseOverInCallBack;
    //離開回調
    WT3DObj.mouseOverLeaveCallBack = this.mouseOverLeaveCallBack;
    //懸停觸發時間長度
    WT3DObj.mouseOverTimeLong = 1000;
 
}

//單擊選中
ModelBussiness.prototype.clickSelectCabinet = function (_obj, _face) {
}
ModelBussiness.prototype.currentShowCabinet = null;
ModelBussiness.prototype.currentState = 0;

//雙擊選中
ModelBussiness.prototype.dbClickSelectCabinet = function (_obj, _face) {
    if (!_obj.visible) {
        return;
    }

    if (_obj.name.indexOf("cube2_612") >= 0
      ) {
        modelBussiness.clickBuildAnimation();
    } else if (_obj.name.indexOf("b1_floor_") >= 0
      ) {
        //顯示樓層
        modelBussiness.clickFloorAnimation(_obj);
    } else if (_obj.name.indexOf("floor_room_zt") >= 0
      ) {
        //顯示樓層
        modelBussiness.clickRoomAnimation(_obj);
        
    } else if (_obj.name.indexOf("b3_tv_2") >= 0 || _obj.name.indexOf("messagePanel_2") >= 0) {
        modelBussiness.resetBuild();
    }
    //雙擊攝像機
    else if (_obj.name.indexOf("camera") >= 0) {
        modelBussiness.playVideo("ws://220.231.250.181:10080/streamv2/live.flv?ip=10.82.31.193&port=5001&profile=h264major&channel=007ea8e5b1884dc6904ba0098ed1b569");
    }
}

//懸停
ModelBussiness.prototype.mouseOverCallBack = function (_obj, face) {
}
ModelBussiness.prototype.mouseInCurrentObj = null;
ModelBussiness.prototype.lastMouseInCurrentObj = null;
ModelBussiness.prototype.mouseOverInCallBack = function (_obj, face) {
    var _this = this;
    var color = 0xbfffea;


    console.log(_obj.name);
    modelBussiness.lastMouseInCurrentObj = _obj;
    modelBussiness.mouseInCurrentObj = _obj;
    if (_obj.name.indexOf("b1_floor_") >= 0 || _obj.name.indexOf("floor_room_") >= 0) {
        var _sobj = _obj;
        if (_obj.name.indexOf("OBJCREN") > 0) {
            _sobj = _obj.parent;
        }
        modelBussiness.mouseInCurrentObj = _sobj;
        WT3DObj.commonFunc.setSkinColorByObj(_sobj, 0x00ffff);
    } else if (_obj.name.indexOf("b3_tv_2") >= 0) {
        layer.msg("雙擊該電視返回園區總覽");
    } else if (_obj.name.indexOf("messagePanel_2") >= 0) {
        layer.msg("雙擊該資訊牌返回園區總覽");
    }
    
}
ModelBussiness.prototype.mouseOverLeaveCallBack = function (_obj, face, nowobj) {
    var _this = this;
    var color = 0x000000;
    if (_obj.name.indexOf("b1_floor_") >= 0 || _obj.name.indexOf("floor_room_") >= 0) {
        var _sobj = _obj;
        if (_obj.name.indexOf("OBJCREN") > 0) {
            _sobj = _obj.parent;
        }
        WT3DObj.commonFunc.setSkinColorByObj(_sobj, 0x000000);
    } else if (_obj.name.indexOf("b3_tv_2") >= 0) {
        layer.closeAll();
    } else if (_obj.name.indexOf("messagePanel_2") >= 0) {
        layer.closeAll();
    }

}


//雙擊大樓時動畫
ModelBussiness.prototype.outCube = null;
ModelBussiness.prototype.clickBuildAnimation=function(){
    if (!this.outCube) {
        this.outCube = WT3DObj.commonFunc.findObject("cube2_612");
    }
    var c = this.outCube;
    WT3DObj.commonFunc.changeObjsOpacity([c], 1, 0.01, 600, function () {
    });
    new TWEEN.Tween(c.scale).to({
        x:3,
        y:3,
        z:3
    }, 700).onUpdate(function () {
    }).onComplete(function () {
        WT3DObj.commonFunc.changeObjsOpacity([c], 0.01, 1, 10, function () {
        });
        c.scale.x = 1; c.scale.y = 1; c.scale.z = 1;
        c.visible = false;
    }).start();
}
//獲取樓層模型物件
ModelBussiness.prototype.floors = null;
ModelBussiness.prototype.B1Models = null;
ModelBussiness.prototype.getFloors = function () {
    if (!this.floors) {
        this.floors = {};
        this.B1Models = [];
        $.each(WT3DObj.scene.children, function (_index, _obj) {
            if (_obj.name.indexOf("b1_floor_") == 0) {
                modelBussiness.floors[_obj.name] = _obj;
            }
            if (_obj.name.indexOf("b1") == 0
                || _obj.name.indexOf("cube2_612") == 0
                || _obj.name.indexOf("messagePanel_1") == 0
                || _obj.name.indexOf("messagePanel_2") == 0) {
                modelBussiness.B1Models.push(_obj);
            }
        });
    }
    return this.floors;
}
ModelBussiness.prototype.resetBuild = function () {

    $.each(modelBussiness.B1Models, function (findex, fobj) {
        fobj.visible = true;
        if (fobj.od_position) {
        
                 { x: -172.72016085901143, y: 57.386418380824466, z: -75.19850675990654 }, 1000,
                    function () {

                    });
    this.hidefloorData();
    this.hideRoomData();
    layer.closeAll();
}
//載入樓層模型
ModelBussiness.prototype.floorModels = {};
ModelBussiness.prototype.loadFloor = function (floorNub, callBack) {
    if (this.floorModels["f" + floorNub]) {
        if (callBack) {
            callBack();
      if (_obj.name.indexOf("floor_") == 0) {
                    modelBussiness.floorModels["f" + floorNub].push(_obj);
                }
            });
            if (callBack) {
                callBack();
            }
        });
        }
    }
}
ModelBussiness.prototype.hidefloorData = function () {
    for (var fs in modelBussiness.floorModels) {
        if (modelBussiness.floorModels[fs]) {
            var fmodels = modelBussiness.floorModels[fs];
            $.each(fmodels, function (findex, fobj) {
                fobj.visible = false;
            });
        }
    };
}
//雙擊樓層時動畫
ModelBussiness.prototype.clickFloorAnimation = function (floor) {
    var _floorNub = parseInt(floor.name.replace("b1_floor_", ""));
    if (floor.name.indexOf("b1_floor_top") >= 0) {
        _floorNub = "top";
    } else {
        this.loadFloor(_floorNub);
    }
    console.log(_floorNub);
    var _floors = this.getFloors();
    //b1_floor_top
    
                });
            });
        });
    }


}
ModelBussiness.prototype.distanceApartFloor = function (floorNub,callBack) {
    var _floors = this.getFloors();
    var objs = [];
    for (var i = 1; i <=6; i++) {
            objs.push(_floors["b1_floor_" + i]);
  
        }
    }).start();
}
ModelBussiness.prototype.shrinkageFloor = function (callBack) {
    var _floors = this.getFloors();
    var objs = [];
   
    }).start();
}
//載入房間模型
ModelBussiness.prototype.clickRoomAnimation = function (room) {
    WT3DObj.commonFunc.flashObjs([room], room.name + "_flashanimation_", 0x00aa00, 10, 200, 0);
    this.loadRoom(room.name);
    this.getFloors();
 
}
ModelBussiness.prototype.roomModels = {};
ModelBussiness.prototype.currentShowRoomName = "currentShowRoomName";
ModelBussiness.prototype.currentShowroomFlagStr = "currentShowroomFlagStr";
ModelBussiness.prototype.loadRoom = function (roomName, callBack) {
    var jsonmodels = null;
    
}
ModelBussiness.prototype.hideRoomData = function () {
 
    };
}
//播放攝像頭
ModelBussiness.prototype.playVideo = function (wsSrc) {
  
}

var modelBussiness = new ModelBussiness();

由於篇幅原因，這一課先介紹到這裡

後面我將繼續講解用webgl 建立 3D園區 3D智慧小區炫酷效果等等

技術交流 [email protected]

交流微信：

如果你有什麼要交流的心得可郵

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