[vtkusers] Hollow polygon

[David E DeMarle]

Hello,

The polygon with a hole in it is also a concave, so in order for us to draw
it it you have to first convert it into a set of convex polygons.
vtkDiskSource produces many polygons, not just one.

hope that helps

David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909

On Tue, Apr 12, 2016 at 7:04 AM, 路明月 <bmoonlu at yeah.net> wrote:

> Hi All,
> I want to draw a polygon which has a hole in the center.I know the
> vtkdisksource can do this,but I want to give input dataset to draw.
> How can I do with this question?
> Thank you for  any help.
> You sincerely.
>
>
>
>
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