CAD梦想画图开发包关于比较问题_梦想CAD控件,DWG网页,CAD网页,CAD控件,CAD开发

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。点击此处在线演示。

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">

</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");

}

网页中演示效果如下，用户可以比教在两个控件里面的图纸内容。

@4UK2@HF[TVR]5%S2G6Z(KA.png

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);

}

网页中演示效果如下，用户可以比教在两个控件里面的图纸内容。

@4UK2@HF[TVR]5%S2G6Z(KA.png

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);

}

网页中演示效果如下，用户可以比教在两个控件里面的图纸内容。

@4UK2@HF[TVR]5%S2G6Z(KA.png