[vtk-developers] Multiple Renderers

[Sebastien BARRE]

At 4/30/2002 02:35 PM, Dean Inglis wrote:
>Hi all,
>
>Started this thread in vtkusers but would like to continue in
>vtk-developers:
>
>
>Heres is a possible pipeline: all Renderers (ren1, ren2 ...) in one
>RenderWindow (renWin) with one Interactor (iren);
>ren1: 3 ImagePlaneWidgets: widgX, widgY, widgZ in ren1
>ren2: an Actor2D/ImageMapper pair to display the output from the widgX's
>internal ImageReslice (GetResliceOutput not implemented yet)
>ren3: as above but for widgY
>ren4: as above but for widgZ
>
>ren1 to ren4 are spatially arranged in renWin via SetViewport calls.
>
>With most actor/mapper pairs, as in ren2 to ren4, the actor is added to the
>renderer.  In the case of the widget, the widget is associated with the
>interactor and not, in this case, the desired renderer ren1.  Currently, the
>interactor does a FindPokedRenderer to determine the renderer and hence
>which props are candidates for GUI interaction.  The problem with the widget
>is that its actors are added to a renderer according to the 'global'
>interactor.
>
>  e.g., from vtkBoxWidget:
>  this->CurrentRenderer =
>       this->Interactor->FindPokedRenderer(this->Interactor->
>GetLastEventPosition()[0],
>
>this->Interactor->GetLastEventPosition()[1]);
>
>Doesn't this lead to ambiguity?
Sorry, I don't understand your problem, Dean.
Where is the ambiguity ? What information is lacking ?


--
Sebastien Barre 
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