[vtkusers] How to draw a ploygon on 3D object?

[David Doria]

On Mon, Oct 25, 2010 at 2:27 AM, finsher <zhuyinghua01 at gmail.com> wrote:

>
> Hi all,
> i want to draw a ploygon on a 3D window, the window display the
> reconstruction volume.
> after drawing the graphics, the volume data will be cut by the projected
> Ploygon.
>
> any suggestion will be appreciate!
>
> Yinghua.
>

This is how to draw a general polygon:
http://www.vtk.org/Wiki/VTK/Examples/Cxx/GeometricObjects/Polygon

and this is how to draw a "regular" polygon (all sides equal length and
convex):
http://www.vtk.org/Wiki/VTK/Examples/Cxx/GeometricObjects/RegularPolygonSource
<http://www.vtk.org/Wiki/VTK/Examples/Cxx/GeometricObjects/RegularPolygonSource>
Is that what you are looking for?

David
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