梦想CAD控件关于比较问题

全图比较

怎么比较两个CAD图纸文件修改前后的不同部分呢？在工程图纸设计中，我们更多情况下可能需要对同一张工程图的前后修改部分进行对比，以确定工程图纸的改动部分及追溯原因，本教程演示了几种常见的比较方法。

实现图纸比较功能，首先将两个控件放入网页中，js代码如下：

<p align="center">

 

  <object classid="clsid:74A777F8-7A8F-4e7c-AF47-7074828086E2" id="MxDrawXCtrl1"  codebase="http://www.mxdraw.com/MxDrawX52.CAB#version=7.0.0.1" width=48% height=85% align="left">

    <param name="_Version" value="65536">

    <param name="_ExtentX" value="24262">

    <param name="_ExtentY" value="16219">

    <param name="_StockProps" value="0">

    <param name="IsRuningAtIE" value="1">

    <param name="EnablePrintCmd" value="1">

    <param name="ShowStatusBar" value="1">

    <param name="ShowMenuBar" value="1">

    <param name="ShowToolBars"  value="1">

    <param name="ShowCommandWindow" value="1">

    <param name="ShowModelBar" value="1">

    <param name="Iniset" value="AutoActive=N,LoadMrx=PropertyEditor">

 

    <param name="ToolBarFiles" value="MxDraw-ToolBar.mxt,MxDraw-ToolBar-DrawParam.mxt,MxDraw-ToolBar-Draw.mxt,MxDraw-ToolBar-Edit.mxt">

    <SPAN STYLE="color:red">不能装载CAD控件。请确认你可以连接网络或者检查浏览器的选项中安全设置。<a href="http://www.mxdraw.com/MxDrawX52.msi">http://www.mxdraw.com/MxDrawX52.msi 安载CAD控件</a></SPAN>

  </object>

  <object classid="clsid:74A777F8-7A8F-4e7c-AF47-7074828086E2" id="MxDrawXCtrl2"  codebase="http://www.mxdraw.com/MxDrawX52.CAB#version=7.0.0.1"width=48% height=85% align="right">

    <param name="_Version" value="65536">

    <param name="_ExtentX" value="24262">

    <param name="_ExtentY" value="16219">

    <param name="_StockProps" value="0">

    <param name="IsRuningAtIE" value="1">

    <param name="EnablePrintCmd" value="1">

    <param name="ShowStatusBar" value="1">

    <param name="ShowMenuBar" value="1">

    <param name="ShowToolBars"  value="1">

    <param name="ShowCommandWindow" value="1">

    <param name="ShowModelBar" value="1">

    <param name="Iniset" value="AutoActive=N,LoadMrx=PropertyEditor">

 

    <param name="ToolBarFiles" value="MxDraw-ToolBar.mxt,MxDraw-ToolBar-DrawParam.mxt,MxDraw-ToolBar-Draw.mxt,MxDraw-ToolBar-Edit.mxt">

    <SPAN STYLE="color:red">不能装载CAD控件。请确认你可以连接网络或者检查浏览器的选项中安全设置。<a href="http://www.mxdraw.com/MxDrawX52.msi">http://www.mxdraw.com/MxDrawX52.msi 安载CAD控件</a></SPAN>

  </object>

首先通过id得到两个控件，返回控件的数据库对象，把两个控件里面不同的内容标记出来，具体实现js代码如下：

function AllCompare() {

    var ocx1 = document.getElementById("MxDrawXCtrl1");

    var ocx2 = document.getElementById("MxDrawXCtrl2");

 

    var database1 = ocx1.GetDatabase();

    var database2 = ocx2.GetDatabase();

 

    var filter = ocx1.NewResbuf();

    var compare1 = ocx1.NewComObject("IMxDrawCompare");

    //开始比较

    //参数一为比较时使用的原始文件 参数二为修改后的，新的文件 参数三为过滤条件

    compare1.Do(database1, database2, filter);

    //返回比较后，被修改的曲线id

    var aryDifferent1 = compare1.GetCurveIdsOfTheDifferent();

    //把修改的地方，标记出来

    //参数一为缩放比例

    //参数二为当前图纸，是新修改的图纸，该变量为true,那么在原图不能找到的对象，为新增加对象

    compare1.DrawFlag(1.0,false);

    // 反过来比较一下，用来确定，那些对象是新增加的。

    var compare2 = ocx1.NewComObject("IMxDrawCompare");

 

    compare2.Do(database2, database1, filter);

 

    var aryDifferent2 = compare2.GetCurveIdsOfTheDifferent();

 

    compare2.DrawFlag(1.0,true);

 

    var iErase = 0;

    var iModify = 0;

    var iAdd = 0;

 

    for (var i = 0;i < aryDifferent1.Count; i++)

    {

        //返回链表中的指定位置的对象id

        var lId = aryDifferent1.AtObjectId(i);

        //返回比较后，被修改的曲线的位置。用于图上标记被修改的对象

        if(compare1.GetIsErase(lId))

        {

            iErase = iErase + 1;

        }

        else

        {

            iModify = iModify +1;

        }

    }

    for(var i = 0; i < aryDifferent2.Count;i++)

    {

        var lId = aryDifferent2.AtObjectId(i);

        if(compare2.GetIsErase(lId))

        {

            iAdd = iAdd + 1;

        }

    }

 

    var modfColor = ocx1.NewComObject("IMxDrawModifyTheColor");

    modfColor.Do(ocx1.GetDatabase(),3289650);

    //把指定实体颜色

    modfColor.DoEntity(aryDifferent1,255);

 

    alert(iModify + "对象修改," + iErase + "对象删除," + iAdd + "对象被增加");

}

选择范围比较

首先通过id得到两个控件，返回控件的数据库对象，把两个控件里面不同的内容标记出来，具体实现js代码如下：

function DoImpCompare(points, filter) {

 

    var ocx1 = document.getElementById("MxDrawXCtrl1");

    var ocx2 = document.getElementById("MxDrawXCtrl2");

 

    var database1 = ocx1.GetDatabase();

    var database2 = ocx2.GetDatabase();

 

    var compare1 = ocx1.NewComObject("IMxDrawCompare");

    compare1.Bound = points;

 

    compare1.Do(database1, database2, filter);

 

    var aryDifferent1 = compare1.GetCurveIdsOfTheDifferent();

 

    compare1.DrawFlag(1.0, false);

    // 反过来比较一下，用来确定，那些对象是新增加的。

    var compare2 = ocx1.NewComObject("IMxDrawCompare");

    compare2.Bound = points;

    compare2.Do(database2, database1, filter);

 

    var aryDifferent2 = compare2.GetCurveIdsOfTheDifferent();

     

    compare2.DrawFlag(1.0, true);

     

    var iErase = 0;

    var iModify = 0;

    var iAdd = 0;

    for (var i = 0; i < aryDifferent1.Count; i++) {

        var lId = aryDifferent1.AtObjectId(i);

        if (compare1.GetIsErase(lId)) {

            iErase = iErase + 1;

        }

        else {

            iModify = iModify + 1;

        }

    }

    for (var i = 0; i < aryDifferent2.Count; i++) {

        var lId = aryDifferent2.AtObjectId(i);

        if (compare2.GetIsErase(lId)) {

            iAdd = iAdd + 1;

        }

    }

    alert(iModify + "对象修改," + iErase + "对象删除," + iAdd + "对象被增加");

}

用户可以选取范围内的图纸作比较，具体实现js代码如下：

function BoundCompare() {

 

    var ocx1  = document.getElementById("MxDrawXCtrl1");

    var getPt = ocx1.NewComObject("IMxDrawUiPrPoint");

    getPt.message = "点取第一点";

    if(getPt.go() != 1)

        return;

    var frstPt = getPt.value();

    var getCorner = ocx1.NewUtility();

    var secondPt =  getCorner.GetCorner(frstPt,"点取第二点:");

    if(secondPt == null)

        return;

    var points = ocx1.NewComObject("IMxDrawPoints");

    points.Add2(frstPt);

    points.Add2(secondPt);

    var filter = ocx1.NewResbuf();

    DoImpCompare( points, filter);

}

选择圆形范围比较

通过圆形范围把两个控件里面不同的内容标记出来，首先需要动态画一个圆，具体实现js代码如下：

  function DoDynWorldDrawFun(dX, dY, pWorldDraw, pData) {

    var sGuid = pData.Guid;

    var ocx1 = document.getElementById("MxDrawXCtrl1");

    ocx1.SetEventRet(0);

    if (sGuid == "DrawCircle") {

        var pt1 = pData.GetPoint("pt1");

        if (pt1 == null)

            return;

        var pt2 = ocx1.NewPoint();

        pt2.x = dX;

        pt2.y = dY;

        var dR = pt1.DistanceTo(pt2);

        pWorldDraw.DrawCircle(pt1.x, pt1.y, dR);

    }

 

}

用户可以选取圆形范围内的图纸作比较，具体实现js代码如下：

function CircleCompare() {

    var mxOcx  = document.getElementById("MxDrawXCtrl1");

    var getPt1 = mxOcx.NewComObject("IMxDrawUiPrPoint");

    getPt1.message = "指定圆心";

    if (getPt1.go() != 1) {

        return;

    }

    var getPt2 = mxOcx.NewComObject("IMxDrawUiPrPoint");

    getPt2.message = "指定圆上一点";

    getPt2.basePoint = getPt1.value();

    var spDrawData = getPt2.InitUserDraw("DrawCircle");

    spDrawData.SetPoint("pt1", getPt1.value());

    getPt2.setUseBasePt(true);

    if (getPt2.go() != 1) {

        return;

    }

    var cen = getPt1.value();

    var pt2 = getPt2.value();

    var dR = cen.DistanceTo(pt2);

    var circle = mxOcx.NewEntity("IMxDrawCircle");

    circle.Center = cen;

    circle.Radius = dR;

    var points = circle.GetSamplePoints(0.1);

 

    if (points.Count < 3) {

        alert("圆太小");

    }

    var filter = mxOcx.NewResbuf();

    DoImpCompare(points, filter);

}