[vtkusers] ClipClosedSurface

[David Gobbi]

ClipClosedSurface ignores the point scalars, in fact it does not even
pass them to the output unless PassPointData is on.  It generates
cell scalars with the name "Labels" or "Colors" if you called
SetScalarModeToLabels() or SetScalarModeToColors().

In any case, your initial problem was almost certainly caused by
connectivity issues.  Try vtkCleanPolyData and let me know if it
helps.  You can also try vtkTriangleFilter, since an STL file contains
only triangles and no other kinds of polys.

 - David

On Fri, Sep 2, 2011 at 5:47 AM, Laurent <l.paul at uclouvain.be> wrote:
> Hi David,
>
> Thanks for the advices. I'll try these.
> I have also found out that the problem may be related to scalar data arrays
> embedded in the PolyData because when I apply ClipClosedSurface on a vtk
> file in paraview, the surface is badly generated and when I try it on a stl
> file of the same mesh, the surface is correctly generated.
> I have looked for a data array in the sources of ClipClosedSurface, but I
> haven't found any name for the internally used arrays. The intersection
> produces these Arrays: Distance (on points), Distance (on cells),
> PointSource, CellSource
> Do you have a suggestion?
>
> I'll keep you posted.
>
> Thanks,
> Laurent.
>
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