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 >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 >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);
}
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