[vtkusers] Re: PolyData Points Delete.

[Dongqing Chen]

Dear Goodwin and vtk users:

   Thanks for your help. After I looked through the related parts, I wrote 
my codes. Although there was no compile error, but some errors happened when 
running the program.

   Some code patches are listed below.

   Pts saves the points what I want to delete from the original vtkPolyData 
colonPolyp, now I generate the newcolonPolyp containing the new data after 
deleting the undesired data from colonPolyp, then render and display the 
newcolonPolyp.

   sorry for not finding some examples on how to use vtkExtractCell. Would u 
please give me some hints? I am wondering there should be some problems when 
I use vtkExtractCell class.

   Thanks a lot.
____________________________________________________________
vtkIdList *ptrIds = vtkIdList::New();

  for (i=0; i<cellNum; i++)
  {
      ptrIds->InsertNextId(Pts[i]);
   }


  vtkExtractCells *newcolonPolyp =vtkExtractCells::New();
  newcolonPolyp->SetInput(colonPolyp);
  newcolonPolyp->SetCellList(ptrIds);

 // Link New Color Coding Scheme
  vtkPolyDataMapper *map = vtkPolyDataMapper::New();
  newcolonPolyp->Update();
  //map->SetInput(colonPolyp);
  map->SetInput((vtkPolyData*)newcolonPolyp->GetOutput());
________________________________________________________________

Best Wishes,
-----------------------------------------------------------------
Dongqing Chen
Ph.D Research Assistant
Rm. 07, Paul C. Lutz Hall
Computer Vision & Image Processing (CVIP) Lab
Department of Electrical & Computer Engineering
Speed School of Engineering
University of Louisville
Louisville, KY. 40292
U.S.A
Email: dqchen at cvip.louisville.edu
Phone:+1-502-852-2789 (Lab)
            +1-502-852-6130 (Office)
-----------------------------------------------------------------
----- Original Message ----- 
From: "Goodwin Lawlor" <goodwin.lawlor at ucd.ie>
To: <vtkusers at public.kitware.com>
Sent: Tuesday, September 26, 2006 1:30 PM
Subject: [vtkusers] Re: PolyData Points Delete.


> Hi,
>
> Have a look at this class already included in VTK:
> http://www.vtk.org/doc/nightly/html/classvtkExtractCells.html
>
> hth
>
> Goodwin
>
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