[vtkusers] how to decrease the number of vtkpolydata

[David Gobbi]

Hi Ali,

Use the vtkDecimatePro filter, it was specifically designed for
reducing the triangle count of a mesh while maintaining the overall
shape.

David, about that example, the vtkCleanPolyData filter was not
designed to be used as a decimation filter.  Its documentation says
that it is meant to "merge duplicate points, and/or remove unused
points and/or remove degenerate cells".  It will probably destroy the
mesh topology if used as a decimator.

 - David


On Tue, Apr 12, 2011 at 1:47 PM, David Doria <daviddoria at gmail.com> wrote:
> On Tue, Apr 12, 2011 at 3:44 PM, Ali Habib <ali.mahmoud.habib at gmail.com>
> wrote:
>>
>> Hi ,
>> I want to decrease the number of  poiints of vtkpolydata generated by
>> vtkmarcingcube it's now 5479
>> any suggestion regarding that
>
> Do you need to reduce the points generated inside the filter? Or would
> something like this:
> http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/DownsamplePointCloud
> be ok?
> David
>
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