[vtkusers] HELP: Problem getting number of points.

[Jorrit Schaap]

Try:

	objInput[REF]->GetOutput()->Update();

--
Jorrit Schaap
Division of Image Processing
Leiden University Medical Center
+31 71 5266206


> -----Original Message-----
> From: vtkusers-admin at public.kitware.com
> [mailto:vtkusers-admin at public.kitware.com]On Behalf Of Allan Loh
> Sent: woensdag 10 januari 2001 4:01
> To: vtkusers at public.kitware.com
> Subject: [vtkusers] HELP: Problem getting number of points.
> 
> 
> Hi all!
> 
>   I'm hoping someone out there can give me a hand with this problem I'm 
> having.
> I'm trying to write a surface registration program, but I'm 
> having problems
> getting the number of points in each vtkPolyData.
>   A code fragment is below..
> 
>   	objInput[REF] = vtkOBJReader::New();
> 	objInput[REF]->SetFileName(refSurfaceFileName);
> 	objInput[REF]->Update();
> 
> 	numPoints = objInput[REF]->GetOutput()->GetNumberOfPoints();
> 
>   However, no matter what I seem to do, numPoints is always 0.
>   A PrintSelf(...) of the objInput shows that it has 20904 points,
> and rendering the objInput displays the model.
> 
>   I'm near my wits end trying to figure out where I'm making my mistake,
> and if anyone could help me out here, I'd appreciate it lots.
> 
> Thanks in advance
> 
> Allan
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