Prabhu Ramachandran a écrit :
> On Tuesday 12 July 2011 10:14 PM, pellegrini wrote:
>> def pickupatoms(self):
>> e = tvtk.ExtractSelectedFrustum()
>> e.set_input(0, pts.mlab_source.dataset)
>> e.frustum = scene.interactor.picker.frustum
>> o = e.get_output(0)
>> print o.points
>>
>> as far as I understood 'o.points' should return the points inside my
>> selected area. However, it is always equal to None.
>> By the way is pts.mlab_source.dataset an object of type 'vtkDataObject'
>> ? I ask this question because in the only example
>> of ExtractSelectedFrustum I could find on the web, the guys were using
>
> Yes, it is, try this::
>
> pts.mlab_source.dataset.is_a('vtkDataObject')
>
>> 'scene.engine.scenes[0].children[0].data' as an input for the
>> set_input method. What would be the equivalent
>> in my case ?
>
> You might what to do ::
>
> e.update()
>
> before you get the output, to see if that helps.
>
> cheers,
> prabhu
Great !!! That seems to work !
I broke my unefficiency record: 4 hours on a problem that was solved in
one line ... !
thanks a lot Prabhu
Eric
--
Eric Pellegrini
Calcul Scientifique
Institut Laue-Langevin
Grenoble, France
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