[vtkusers] vtkDataSetSurfaceFilter does not work properly on quadratic tet meshes

[Dominik Szczerba]

Hi,

Is there any reason vtkDataSetSurfaceFilter returns a linear triangle 
mesh from a quadratic tet mesh (by just breaking each quadratic element 
into several linear ones)? Is there a way in VTK to make the surface 
also quadratic?

thanks,
Dominik