三维多段线求各顶点坐标 .NET API

quyeming1987

做CAD二次开发时，如何获得三维多段线的顶点个数和相应坐标，用的得是vs2008    .net API ?

guohq

1. Public Function GetVerPts(ByVal objPolyLine3D As Polyline3d) As List(Of Point3d)
   
2.         Dim rtn As New List(Of Point3d)
   
3.         Using Trans As Transaction = DB.TransactionManager.StartTransaction
   
4.             Dim obj As Polyline3d = Trans.GetObject(objPolyLine3D.ObjectId, OpenMode.ForWrite)
   
5.             Dim Temp_Type As Poly3dType = obj.PolyType '将先前的拟合类型先保存下来，计算完毕后复原
   
6.             obj.ConvertToPolyType(Poly3dType.SimplePoly)
   
7.             Dim Vtx As PolylineVertex3d = Nothing
   
8.             For Each VID As ObjectId In obj
   
9.                 Vtx = VID.GetObject(OpenMode.ForRead)
   
10.                 rtn.Add(New Point3d(Vtx.Position.X, Vtx.Position.Y, Vtx.Position.Z))
    
11.             Next
    
12.             obj.ConvertToPolyType(Temp_Type)
    
13.             Trans.Commit()
    
14.         End Using
    
15.         GetVerPts = rtn
    
16. End Function

Public Function GetVerPts(ByVal objPolyLine3D As Polyline3d) As List(Of Point3d)<br />         Dim rtn As New List(Of Point3d)<br />         Using Trans As Transaction = DB.TransactionManager.StartTransaction<br />             Dim obj As Polyline3d = Trans.GetObject(objPolyLine3D.ObjectId, OpenMode.ForWrite)<br />             Dim Temp_Type As Poly3dType = obj.PolyType '将先前的拟合类型先保存下来，计算完毕后复原<br />             obj.ConvertToPolyType(Poly3dType.SimplePoly)<br />             Dim Vtx As PolylineVertex3d = Nothing<br />             For Each VID As ObjectId In obj<br />                 Vtx = VID.GetObject(OpenMode.ForRead)<br />                 rtn.Add(New Point3d(Vtx.Position.X, Vtx.Position.Y, Vtx.Position.Z))<br />             Next<br />             obj.ConvertToPolyType(Temp_Type)<br />             Trans.Commit()<br />         End Using<br />         GetVerPts = rtn<br /> End Function

   
说明：1.当polyline3d处于非拟合状态时可以计算其顶点坐标
           2. DB   =  HostApplicationServices.WorkingDatabase

quyeming1987

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谢谢！我正在学C#.net 能不能用C#给我讲解一下？