[vtkusers] mesh subdivision

[Dženan Zukić]

NsPx, decimation is quite the opposite of mesh subdivision. Decimation
reduces complexity (simplifies the mesh), while subdivision increases
number of vertices, edges and faces.

On Tue, Aug 28, 2012 at 3:07 PM, David Doria <daviddoria at gmail.com> wrote:

> On Tue, Aug 28, 2012 at 9:02 AM, NsPx <nspx.roronoa at gmail.com> wrote:
>
>>  Hi all,
>>
>> I would like to decimate a mesh using a criterion (let's say "edge length
>> <=1").
>>
>> By searching through the documentation, I find the only way is to use
>> vtkStreamingTesselator coupled with vtkEdgeSubdivisionCriterion but I don't
>> really understant how to use it.
>>
>> Mainly, I can't pass a vtkPolyData, I have to use it cell (triangle) by
>> cell ? How can I use the callabacks ?
>> Can someone provide some example ?
>>
>> Thanks by advance.
>>
>
> There are a few subdivision techniques available:
> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Meshes/Subdivision
>
> Will any of those suit your needs?
>
> To your second question (very separate from the first, no?) - you can find
> an example of using a callback here:
> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Interaction/KeypressObserver
>
> David
>
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