[vtkusers] displaying simple polygons

[David Doria]

On Mon, Nov 2, 2009 at 9:10 AM, Xavi Almolda <xavi.almolda at gmail.com> wrote:
> Thanks for your answer,
> Yes, I have already read the information on this page.
> The problem I have is that I need to tesselate the non-convex polygons. I am
> using a vtkTriangleFilter and it works fine, but I need to display the edge
> of the original polygon, and after the tesselation I have a lot of triangles
> each with its edges. Do I need to create another vtkCellArray with a
> vtkPolyline cell? Is there another way to get and display the edge of the
> resulting set of triangles?
> Thank you,
> Xavi
>

Lets try to simplify the problem. Basically you have a triangle mesh
(can you provide one so we can play with it) and you want to highlight
the boundary edges? Is this correct?

Thanks,

David