[vtkusers] vtkRectilinearGridToTetrahedra how to get 3D picture?

[Eric E. Monson]

Hey Artem,

I don't know the answer to your question, but just so you know: the Tetrahedralize filter in ParaView is the vtkDataSetTriangleFilter from VTK.

-Eric

------------------------------------------------------
Eric E Monson
Duke Visualization Technology Group


On May 9, 2010, at 5:21 PM, Artem Babayan wrote:

> Hello.
> 
> I am trying to visualize 3D scalar data defined on rectilinear grid.
> Apparently, vtkFixedPointVolumeRayCastMapper cannot render the data
> from Rectilinear Grid directly. Paraview uses filter 'Tetrahedralize'
> which is not present in VTK. I have tried to use
> vtkRectilinearGridToTetrahedra as following:
> 
>      vtkSmartPointer<vtkFixedPointVolum> RayCastMapper> mapper_conc =
>                   vtkSmartPointer<vtkFixedPointVolumeRayCastMapper>::New();
> 
>      vtkRectilinearGridToTetrahedra *rg2t =
> vtkRectilinearGridToTetrahedra::New();
>      rg2t->SetInputConnection(reader_grid->GetOutput()->GetProducerPort());
>      mapper_conc->SetInput(rg2t->GetOutput());
> 
> but got the following runtime error:
> 
> "Input port 0 of algorithm
> vtkFixedPointVolumeRayCastMapper(0x2c90020) has 0 connections but is
> not optional."
> 
> What am I doing wrong?
> 
> Best wishes
> Artem
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