[vtkusers] vtkPolyData Editing

[D.M.P.Davies]

Daniele Bianchini wrote:

>  I need to delete some cells from a vtkPolyData structure. I tried to
> use vtkPolyData::DeleteCell() function, but when I render the
> vtkPolyData deleted cells are still visible.

I could only do this by giving cell some  (vtkScalar) values - vtk3.2.
Then I used vtkThreshold on these values.

If a wanted to delete a cell I made its value suitably high to fail the
threshold test. This works for unsturctured grids going through a
vtkGeometryFilter for the boundary polygons.

Dave Davies
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