[vtkusers] checking visibility of a vtkActor

[David E DeMarle]

The AreaPicker classes can do this.

David E DeMarle
Kitware, Inc.
R&D Engineer
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-371-3971 x109



On Thu, Aug 26, 2010 at 3:54 PM, Juan Cardelino
<juan.cardelino at gmail.com> wrote:
> Well I guess it wasn't so easy. Maybe I did not made myself clear
> enough. As far as I can tell, that visibility is a field used to turn
> on/off a certain vtkProp. That visibility works regardless of the pose
> of the vtkProp and the pose of the camera. What I really meant is how
> to verify if a certain vtkActor will fall out of the frustum of the
> view, given the position of the actor and the camera.
> Is it clearer now? Thats exactly what the interactor does.
> Thanks for your time and sorry for the missunderstanding.
> Regards,
>            Juan
>
> On Thu, Aug 26, 2010 at 3:44 PM, Eric E. Monson <emonson at cs.duke.edu> wrote:
>> Just so you know, the thing I always use is the "List of all members" link on each of the documentation pages. That shows all inherited members, too, so you don't have to look down the tree manually.
>>
>> -Eric
>>
>>
>> On Aug 26, 2010, at 2:41 PM, Juan Cardelino wrote:
>>
>>> Oh well, it was my bad, I forgot to look up in the hierarchy of
>>> classes, and not only in vtkActor. It is pretty obvious  that this
>>> method should be inherited from vtkProp.
>>> Sorry for the silly question.
>>> Thanks for your help.
>>> Regards,
>>>              Juan
>>>
>>> On Thu, Aug 26, 2010 at 3:39 PM, David Doria <daviddoria+vtk at gmail.com> wrote:
>>>> On Thu, Aug 26, 2010 at 2:35 PM, Juan Cardelino
>>>> <juan.cardelino at gmail.com> wrote:
>>>>> I've been looking for some time a way to determine if an actor is
>>>>> visible or not in a scene. So far I've been unsuccesful and I'm about
>>>>> to implement it myself, but I want to be sure before. What makes me
>>>>> doubt is the behaviour of the vtkRenderWindowInteractor. When you
>>>>> Interact with a vtkRenderWindow and you press the 'r' key, all actors
>>>>> are made visible. So it has to compute their visibility in some way.
>>>>> Can anyone give me a hint on where to look.
>>>>> Thanks in advance,
>>>>>                            Juan
>>>>
>>>> What about this:
>>>>
>>>> http://www.vtk.org/doc/nightly/html/classvtkProp.html#aefc4aa169365523b276c4bb44a8a11ed
>>>>
>>>> vtkActor* yourActor = something...
>>>> yourActor->GetVisibility();
>>>>
>>>> Thanks,
>>>>
>>>> David
>>>>
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