AutoCAD 2006 + C# + ObjectARX简单纵横断面程序开发

   应老同学的要求，用C#+ObjectArx编了第一个程序，功能是根据测量的数据文件，测绘纵横断面图。

       纵断面数据示例：

   1,0,3.9

   2,10,3.87

   3,20,3.86

   4,21.5,2.4

   5,40,2.42

       横断面数据示例：

   0,3.9

   5,3.92,10,3.97

   5,3.93,10,3.98

   20,3.86

   5,3.85,10,3.85

   5,3.86,10,3.84

   40,2.42

   5,2.41,10,2.43

   5,2.43,10,2.44

   花了一个晚上（找资料，熟悉ObjectArx，动手编起来倒挺快，就几行代码)

   源代码如下：

using System ;
using System.IO;
using System.Text;
using Autodesk.AutoCAD.Runtime ;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Windows;
using Autodesk.AutoCAD.GraphicsInterface;
using Autodesk.AutoCAD.Colors;
using Autodesk.AutoCAD.PlottingServices;

[assembly: CommandClass(typeof(ClassLibrary.Road))]

namespace ClassLibrary
{
   /**//// <summary>
   /// Summary description for Class.
   /// </summary>
   public class Road
   {

       // Define Command "AsdkCmd1"
       [CommandMethod("Road")]
       static public void Help()
       {
           string s = "道路绘图程序\n程序设计：风\n命令列表\n横断面：Transect,纵断面：Vertical\n技术支持：http://xiexiaokui.cnblogs.com\nQQ:57164718";
           System.Windows.Forms.MessageBox.Show(s);
       }

       [CommandMethod("Vertical")]
       static public void Vertical()
       {
           string filename;
           Autodesk.AutoCAD.Windows.OpenFileDialog ofd = new OpenFileDialog("纵断面数据","","txt","打开纵断面数据",OpenFileDialog.OpenFileDialogFlags.AllowAnyExtension);
           if(ofd.ShowDialog()==System.Windows.Forms.DialogResult.OK)
           {
               filename = ofd.Filename;
           }
           else
           {
               return;
           }
           StreamReader sr = new StreamReader(filename);
           
           Transaction transaction=null;
           string data = sr.ReadLine();
           if(data==null)
               return;
           string[] datas = data.Split(',');
           int no = int.Parse(datas[0]);
           double x = double.Parse(datas[1]);
           double y = double.Parse(datas[2]);
           Point3d p1 = new Point3d(x,y,0);
           data = sr.ReadLine();
           while(data!=null)
           {
               if(data=="")
                   continue;
               datas = data.Split(',');
               no = int.Parse(datas[0]);
               x = double.Parse(datas[1]);
               y = double.Parse(datas[2]);
               Point3d p2 = new Point3d(x,y,0);
               Line line = new Line(p1,p2);

               transaction = HostApplicationServices.WorkingDatabase.TransactionManager.StartTransaction();
               BlockTable bt = (BlockTable)transaction.GetObject(HostApplicationServices.WorkingDatabase.BlockTableId, OpenMode.ForRead);
               BlockTableRecord btr = transaction.GetObject(HostApplicationServices.WorkingDatabase.CurrentSpaceId,OpenMode.ForWrite) as BlockTableRecord;
               
               btr.AppendEntity(line);
               transaction.AddNewlyCreatedDBObject(line,true);
               transaction.Commit();

               p1 = p2;
               data = sr.ReadLine();
           }
       }

   
       // Define Command "AsdkCmd1"
       [CommandMethod("Transect")]
       static public void Transect() // This method can have any name
       {
           string filename;
           Autodesk.AutoCAD.Windows.OpenFileDialog ofd = new OpenFileDialog("纵断面数据","","txt","打开纵断面数据",OpenFileDialog.OpenFileDialogFlags.AllowAnyExtension);
           if(ofd.ShowDialog()==System.Windows.Forms.DialogResult.OK)
           {
               filename = ofd.Filename;
           }
           else
           {
               return;
           }
           StreamReader sr = new StreamReader(filename);
           
           double baseHeight = 0;    
           string data = sr.ReadLine();
           Transaction transaction=null;
           while(data!=null)
           {
               if(data=="")
                   continue;
               string[] datas = data.Split(',');
               int no = int.Parse(datas[0]);
               double stake = double.Parse(datas[1]);
               string left = sr.ReadLine();
               string right = sr.ReadLine();
               string[] lefts = left.Split(',');
               string[] rights = right.Split(',');

               Point3d center = new Point3d(0,baseHeight,0);
               Point3d lp1 = new Point3d(-double.Parse(lefts[0]),double.Parse(lefts[1])+baseHeight,0);
               Point3d lp2 = new Point3d(-double.Parse(lefts[2]),double.Parse(lefts[3])+baseHeight,0);
               Point3d rp1 = new Point3d(double.Parse(rights[0]),double.Parse(rights[1])+baseHeight,0);
               Point3d rp2 = new Point3d(double.Parse(rights[2]),double.Parse(rights[3])+baseHeight,0);

               Line l1 = new Line(center,lp1);
               Line r1 = new Line(center,rp1);
               Line r2 = new Line(rp1,rp2);
               Line l2 = new Line(lp1,lp2);
               
               transaction = HostApplicationServices.WorkingDatabase.TransactionManager.StartTransaction();
               BlockTable bt = (BlockTable)transaction.GetObject(HostApplicationServices.WorkingDatabase.BlockTableId, OpenMode.ForRead);
               BlockTableRecord btr = transaction.GetObject(HostApplicationServices.WorkingDatabase.CurrentSpaceId,OpenMode.ForWrite) as BlockTableRecord;
               
               btr.AppendEntity(l1);
               transaction.AddNewlyCreatedDBObject(l1,true);
               transaction.Commit();
               
               transaction = HostApplicationServices.WorkingDatabase.TransactionManager.StartTransaction();
               bt = (BlockTable)transaction.GetObject(HostApplicationServices.WorkingDatabase.BlockTableId, OpenMode.ForRead);
               btr = transaction.GetObject(HostApplicationServices.WorkingDatabase.CurrentSpaceId,OpenMode.ForWrite) as BlockTableRecord;
               
               btr.AppendEntity(l2);
               transaction.AddNewlyCreatedDBObject(l2,true);
               transaction.Commit();

               transaction = HostApplicationServices.WorkingDatabase.TransactionManager.StartTransaction();
               bt = (BlockTable)transaction.GetObject(HostApplicationServices.WorkingDatabase.BlockTableId, OpenMode.ForRead);
               btr = transaction.GetObject(HostApplicationServices.WorkingDatabase.CurrentSpaceId,OpenMode.ForWrite) as BlockTableRecord;

               btr.AppendEntity(r1);
               transaction.AddNewlyCreatedDBObject(r1,true);
               transaction.Commit();
               

               transaction = HostApplicationServices.WorkingDatabase.TransactionManager.StartTransaction();
               bt = (BlockTable)transaction.GetObject(HostApplicationServices.WorkingDatabase.BlockTableId, OpenMode.ForRead);
               btr = transaction.GetObject(HostApplicationServices.WorkingDatabase.CurrentSpaceId,OpenMode.ForWrite) as BlockTableRecord;

               btr.AppendEntity(r2);
               transaction.AddNewlyCreatedDBObject(r2,true);
               transaction.Commit();

               baseHeight += 10;
               data = sr.ReadLine();

           }
       }
   }
}

转载于:https://www.cnblogs.com/xiexiaokui/archive/2005/12/22/302201.html

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