[vtkusers] Difference between cells and polygons

[David E DeMarle]

In vtk a polygon is just one type of cell. The vtkPolyData class can hold
VTK_VERTEX'es for example, as well as VTK_POLYGONS. See
http://www.vtk.org/doc/nightly/html/classvtkPolyData.html or the books for
more information. Use GetPoly's to get a list of only the polygonal cells,
then use getcellpoints and getcellneighbors on each cell id from that list.

cheers
Dave DeMarle


On 7/13/07, David Goldsmith <d_l_goldsmith at yahoo.com> wrote:
>
> Hi!  In plain English, what is (are) the difference(s) between cells and
> polygons?  And if I'm trying to loop over the triangles (are these cells or
> polygons?) created by vtkDelaunay2D from numbered points to get the point
> numbers of each triangle's vertices, as well as each triangle's neighboring
> triangle objects, which vtkPolyData method do I use for each of these
> tasks?  Thanks!
>
> DG
> Python: It just works! <http://www.python.org>
>
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