[vtkusers] get visible surface

David E DeMarle dave.demarle at kitware.com
Thu Aug 23 11:03:18 EDT 2012

Visible selection works on the ident buffer technique.

That is, it draws each entity in a unique color and then reads the
pixel colors to see what entities were drawn.

Antialiasing changes the colors which makes it choose the wrong entities.

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

On Thu, Aug 23, 2012 at 10:58 AM, David Doria <daviddoria at gmail.com> wrote:
> On Thu, Aug 23, 2012 at 10:41 AM, David E DeMarle
> <dave.demarle at kitware.com> wrote:
>> Try it now. I made a change to the wiki to turn off antialiasing.
>> David E DeMarle
> Yep, that did the trick (sorry Gerald, I see now that you said to do
> that (I guess I wasn't sure how to do it anyway haha, so thanks
> David).
> So I guess I'm still not sure how anti-aliasing makes it produce
> triangles all the way on the other side of the sphere (in my high-res
> sphere demo)?
> David

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