Find Clip Id from NonRectangularViewPort Object ID t?

[JanetDavidson]

Hello,

Need help  and could not find a solution for it.

I have  the ID of non rectangular view port and I need to find the Polyline attached to it.

How do you do that ?

Thanks,

[Alexander.Rivilis]

Hi, Janet!

Please attach a simplest dwg-file with such viewport and correspondent Polyline.

P.S.: Maybe method Viewport.NonRectClipEntityId can help you?

[khoa.ho]

Hi,

Once you have a viewport ObjectId, use viewport.NonRectClipEntityId (that should be not ObjectId.Null) to get its non-rectangular viewport, see the following code snippet:

transaction.GetObject(viewport.NonRectClipEntityId, OpenMode.ForRead) as Polyline

-Khoa

[JanetDavidson]

Thanks Khao for your time,

 Actually My Problem it the otherway around.  I mean I want the PolyLine ObjectId of sorrouding ViewPort (Which I have the ID.

[JanetDavidson]

Hi Alex,

I need the object ID of Polyline which is attached to viewport.

[Alexander.Rivilis · Accepted solution]

using System;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Colors;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.EditorInput;

[assembly: CommandClass(typeof(Rivilis.Lesson))]

namespace Rivilis
{
  public class Lesson
  {
    [CommandMethod("TestViewport")]
    public void TestViewport()
    {
      Document doc = Application.DocumentManager.MdiActiveDocument;
      Editor ed = doc.Editor;
      PromptSelectionResult res = ed.GetSelection();
      if (res.Status == PromptStatus.OK) {
        using (Transaction t = doc.TransactionManager.StartTransaction()) {
          foreach (ObjectId id in res.Value.GetObjectIds()) {
            Viewport vp = t.GetObject(id, OpenMode.ForRead) as Viewport;
            if (vp != null) {
              ObjectId idPoly = vp.NonRectClipEntityId;
              if (!idPoly.IsNull) {
                // ObjectId of polyline
                ed.WriteMessage("\nid = {0} NonRectClipEntityId = {1}", id, idPoly);
              }
              else {
                ed.WriteMessage("\nid = {0} Viewport is not clipping with polyline", id);
              }
            }
            else {
              ed.WriteMessage("\nid = {0} is not Viewport", id);
            }
          }
          t.Commit();
        }
      }
    }
  }
}

http://www.developerfusion.com/tools/convert/csharp-to-vb/  for converting C# to VB.NET

[JanetDavidson]

Alex Thank you so much. That was it.