[vtkusers] vtkSmoothPolyDataFilter + unstructuredGrid

[Bill Chivas]

vtkGeometryFilter works fine. I wonder if i could get back to
unstructuredGrid and hexahedrons by using the points.
I noticed that the number of points are the same in unstructuredGrid and
vtkGeometryFilter (vtkPolyData).
Could i "reproduce" the original hexahedron topology?

Thanks,
Bill

2009/12/11 David Gobbi <david.gobbi at gmail.com>

>  On Fri, Dec 11, 2009 at 7:11 AM, Bill Chivas <noo134 at googlemail.com>
> wrote:
> > Hello all,
> >
> > I would like to use vtkSmoothPolyDataFilter  on an unstructuredGrid, but
> i
> > read the particular filter applies only to vtkPolyData.
> > My unstructuredGrid consists of hexahedrons.
> > How could i use the filter?
> > One idea i thought is to extract the surface iterately and apply to these
> > surfaces, but i don't know if it's ok.
>
> I've seen some people create a "skin" polydata with vtkGeometryFilter,
> apply the smoothing to the "skin" and then use a custom filter to
> propagate the smoothing throughout the interior of their mesh.  The
> vtkGeometryFilter is a basic anything-to-polydata filter, so it is
> easy to use.  The final step of using the smoothed polydata to create
> a smoothed mesh is nontrivial, though.
>
>    David
>
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