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）

時間 2019-11-07

標籤使用 webgl three.js 搭建一個 3d 智慧園區建築消防模擬 web bim 管理系統第四欄目 JavaScript 简体版

原文原文鏈接

這節課咱們主要講解園區三維可視化炫酷感官技術方案web

前言：json

　　當基礎技術達到普及狀態，應用就趨向於極致，在三維可視化領域也是這個道理。各大可視化公司都追求美觀最大化，這時候美工的做用就不容忽視了。canvas

　　背景說明：瀏覽器

　　　　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，下一個科技風口可以繼續戰鬥，國民經濟可以挺住下行壓力。因此可視化，科技風，炫酷風成爲擴大預算的一項重要指標。（有錢）微信

　　　　B、技術背景：三維技術很早在遊戲方面就有應用，可是侷限於客戶端龐大，電腦硬件要求高，因此在行業應用方面一直沒有普及，而當前民衆用的電腦基本都帶有獨立顯卡，包括市面上的手機也基本都帶有GPU處理器，這爲三維技術普及與應用奠基了很好的基石。還有就是webgl技術的發明與普及，瀏覽器直接支持gpu加速，輕客戶端機制把一切封裝在瀏覽器沙盒中。用戶只須要解決業務相關的問題就能夠。（有技術方案）ide

　　　　C、項目背景：與本項目相關的背景就是各大可視化廠家發力作出愈來愈炫酷的效果，做爲webgl愛好者，不能放過一切前沿的技術應用。着手研究與實施出炫酷效果，對於我的而言也是刻不容緩。（有人）
動畫

　　　　D、錢、技術、人都有了，just do it！！！webgl

　　　　技術交流 1203193731@qq.comui

1、閒話少敘，先看效果圖this

一、外立面效果圖加周遭環境特效。

二、單獨樓層效果與過分動畫

三、室內效果

2、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

這裏再次強調美工不可忽視的做用，尊稱設計師。

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

至於難點技術有粒子效果、着色器語言、線性代數與圖片的靈活應用、瓦片化加載等。

3、完成步驟

園區可視化方案的實施跟真實建築樓宇的過程是同樣的。從設計到地基到建築，一步也不能少。一步也不能跳過

一、先設計模型

　　1.一、先設計，這裏設計師登場，首先設計師打開腦洞，想象出一款炫酷的設計，與風格方案，而後與程序猿交涉，輸出程序猿須要的原圖。

　　1.二、開始「打地基」，根據設計師的設計，咱們選的地基是科技虛幻話地基，就是科技網格

　　　　效果：

　　　　代碼：

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　　　　技術點講解：

　　　　這裏面有兩種方案，一、用劃線的方式畫出網格，二、作一張網格透明圖片做爲網格。我建議使用第一種方案，具體優勢咱們後續再講。

　　1.三、實現周遭環境

　　效果：

　　代碼：

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　　難點講解：這裏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置爲0

1.四、添加道路特效

　　效果：

　　代碼：

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　　難點：如何讓道路動起來，這裏我封裝了方法，具體如何封裝因爲篇幅緣由，只能下節課詳解，這節課主要講宏觀搭建。

　　1.五、添加樓層

　　效果：

　　模型代碼：

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　　技術難點：瓦片式加載，初步加載時只作外立面的加載與渲染，當點擊時再作內部加載

　　1.六、剩下部分全是樓層的疊加這裏不作累訴

　　最終達到以下效果便可

　　1.七、瓦片是加載房間模型

　　效果以下：　　

　　代碼以下：

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二、業務邏輯

　　2.一、場景設想

　　　　咱們設想場景是這樣的初始化時看到整個園區樓宇的概況，而後雙擊樓宇，加載單個樓層模型，再雙擊樓層、加載樓層內房間模型、雙擊房間、能夠進入。

　　2.二、代碼實現

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

    WT3DObj.mouseOverCallBack = this.mouseOverCallBack;
    //進入回調
    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("雙擊該信息牌返回園區總覽");
    }
    
}
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();
}
//獲取樓層模型對象
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();
}
//加載樓層模型
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();
}
//加載房間模型
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();