[vtkusers] vtkClipClosedSurface problem

[David Gobbi]

Hi Randy,

I tried it with vtkSphereSource and it worked perfectly.  Evidently
vtkSuperquadricSource does not generate a closed surface.  You can
test whether a surface is closed by using the vtkFeatureEdges filter
to display free edges, i.e. edges that belong to only one polygon.
In a closed surface, each edge belongs to exactly two polygons.

feature = vtk.vtkFeatureEdges()
feature.SetInputConnection(glyphs.GetOutputPort())
feature.FeatureEdgesOff()
feature.BoundaryEdgesOn()
feature.NonManifoldEdgesOn()

Try vtkCleanPolyData to clean the output of vtkSuperquadricSource.
It isn't guaranteed to work, but it's worth a shot.

 - David


On Thu, Mar 29, 2012 at 6:27 PM, Randy Heiland <heiland at indiana.edu> wrote:
> Hi,
>
> I'm having a problem with this filter and would welcome any advice.  I've got a self-contained example here:
>
> http://old.compucell3d.org/mediawiki1.7/index.php/Vtk_clip_cap_glyphs
>
> thanks, Randy