[vtkusers] vtkAVIWriter problem.

[Andre Gouws]

I usually just use vtkLineSource (has SetPoint1 and SetPoint2 calls once you have calculated the positions) .. example from the vtk source (Python sorry)

rake = vtk.vtkLineSource()
rake.SetPoint1(15, -5, 32)
rake.SetPoint2(15, 5, 32)
rake.SetResolution(21)

.... addmapper ...

.... addactor ... etc.


************************************************************************

Andre Gouws
York Neuroimaging Centre



Konstantinos Kelg wrote:
>
> Hi. I 'm trying to make a 3D animation (loading vertex data from files 
> and rendering them), and I have some problems: I must either make an 
> animated gif (which VTK doesn't seem to support - does it ?) or make 
> an AVI, because the real time animation is too slow. So I started 
> trying the 2nd solution and I have some problems:
>
> - At first I got linker errors when I constructed a "vtkAVIWriter" 
> object. I 've finally managed to work this out by importing the needed 
> Windows library (I post it here just in case someone has the same 
> problem again):
>
>     #pragma comment(lib,"Vfw32.lib") // that's all
>
> - Now I have written this code:
>
>  vtkWindowToImageFilter *wtif = vtkWindowToImageFilter::New();
>  wtif->SetInput(renWin);
>
>  vtkAVIWriter *avi = vtkAVIWriter::New();
>  avi->SetInputConnection(wtif->GetOutputPort());
>  avi->SetFileName(str);
>
>  avi->Start();
>  CStringA txt;
>  for(int i=0; i<m_cList.GetItemCount(); i++)
>  {
>   LoadAndDisplayFrame((LPCTSTR)m_cList.GetItemText(i, 0)); // Load and 
> render vertex data from file
> // wtif->SetInput(renWin);
> // avi->SetInputConnection(wtif->GetOutputPort());
> // avi->Update();
>   avi->Write();
>  }
>  avi->End();
>  wtif->Delete();
>  avi->Delete();
>
> This produes an AVI but it always shows the same animation frame 
> (nothing changes).
>
> Does anyone know what should I do to make right ?
>
>
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