[Paraview] Custom Navigation

[Patrick Shinpaugh]

Thanks for pointing me in the right direction. I think I actually want
the setActiveView slot from the pqActiveObjects but need a plugin
function to run whenever head, wand, joystick and/or buttons are updated
and to run in its own thread using a select to wake only when new data
is available. Of course, if the function were called once per frame then
things would still work. Is there a signal for post-frame (completion of
swap) or pre-frame (prior to render start) I could connect to a slot in
my plugin?

If not, can I just use pthreads or would qt or vtk threads be preferred
or work better?

Thanks,
Pat


On Sun, 2010-09-19 at 11:16 -0400, Utkarsh Ayachit wrote:
> You can easily access the camera using a plugin. Look at auto-start
> plugins (http://www.paraview.org/Wiki/Plugin_HowTo#Autostart_Plugins).
> In the startup code for the plugin,you can add a slot to observe the
> viewChanged() signal from pqActiveObjects singleton. Your slot will
> then be called every time the active view changes. To get the camera
> from the view, use the following code:
> 
> 
> pqView* view = pqActiveObjects::instance()->activeView();
> if (view)
>   {
>   vtkSMRenderViewProxy* proxy =
> vtkSMRenderViewProxy::SafeDownCast(view->getProxy());
>   if (proxy)
>     {
>     vtkCamera* camera = proxy->GetActiveCamera();
>     }
>   }
> 
> Utkarsh
> 
> On Sat, Sep 18, 2010 at 3:38 PM, Patrick Shinpaugh <shpatric at vt.edu> wrote:
> > Hi,
> > We're looking to create custom navigation and interaction for ParaView
> > in a CAVE using IS900 tracked head and wand devices. What is the best
> > way to update the camera? How would the camera be accessed? Can it be
> > done through some sort of plugin or would it be necessary to customize
> > VTK or ParaView source?
> >
> > Thanks,
> > Pat
> >
> > Patrick Shinpaugh
> > Virginia Tech
> > UVAG System Administrator/Programmer
> > 540-231-2054
> >
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Patrick Shinpaugh
Virginia Tech
UVAG System Administrator/Programmer
540-231-2054