[vtkusers] How to orient faces of a polydata?

[Bill Lorensen]

Can you post a small, compilable example that illustrates the problem?

On Tue, Jan 2, 2018 at 7:28 AM, Majid Mohammad sadeghi via vtkusers
<vtkusers at vtk.org> wrote:
> Dear All,
>
> I am exrtuding a 2D polygon using vtkLinearExtrusionFilter, the resulting
> polydata has misoriented faces on the mesh, meaning that for a closed mesh,
> faces inside and outside direction is mixed up. (for example when I open the
> data with meshlab and look at the normals, some are pointing in and some
> outwards)
>
> How is it possible to orient order of each triangle vertices in a mesh so
> that there is a consistancy betwwen all faces?
>
> Thanks for the help.
>
>
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