[vtkusers] vtkSeedWidget and vtkImageViewer2 bug in visualization?

[Nicolas Rannou]

Thanks Jothy,

I'm afraid that at some point "manually" hiding actors which are out of 
the current slice takes too much time (if thousands of actors).
But the strange thing is that after moving through a few slices the 
actor "disappears" from my view so what I see is not just a projection 
of the 3d seed actors.

Thanks,

     Nicolas

On 04/13/2010 10:06 AM, Jothybasu K Selvaraj wrote:
> It seems to be a depth problem.vtkImageViewer2 displays all the actors 
> whicher is above the image.To check ,comment the setupInteractor and 
> see it in 3D.
>
> I would suggest you to hide the actors which ever is out of current slice.
>
> Jothy
>
> On Tue, Apr 13, 2010 at 2:49 PM, Nicolas Rannou 
> <nicolas_rannou at hms.harvard.edu 
> <mailto:nicolas_rannou at hms.harvard.edu>> wrote:
>
>     Hello,
>
>     I'm experimenting some troubles using vtkSeedWidget.
>
>     I visualize a volume (*.mhd) in a vtkImageViewer2.
>     Then I use vtkSeedWidget to select some points through the volume.
>
>     The problem is that when I select one point in one slice, then
>     move to another slice to select another point, I can see the actor
>     of the first selected point even if I am not on the same slice
>     anymore.
>     If I move further, the first point will not be visible after some
>     more slices...
>     The coordinates (real world coordinates) of all the created points
>     are good.
>
>     The problem must be in the visualization/actors somewhere...
>
>     I tried to use vtkConstrainedPointHandleRepresentation and
>     vtkImageActorPointPlacer without success.
>
>     Did somebody already face this issue or have any advice?
>
>
>     Thanks for your help,
>

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