Hi Andrew,
we have used OSG and VTK together in some data visualization projects.
We don't use any black magic in combining the two, but our software
might contain some handy code that is usable for your purposes. The
software ("Virtual Reality eXplorer (VRX) and VRmeer Library Open
Source Edition") can be downloaded here:
http://graphics.tudelft.nl/VRmeer
I'd love to discuss dataviz stuff on OSG, so do contact me if you have
ideas on combining the two.
Gerwin

On Tue, Feb 2, 2010 at 8:12 PM, Andrew Cunningham <[email protected]> wrote:
> I was looking for some SciVis classes for OSG, along the lines of VTK's very 
> rich collection?
>
> It is possible to use use VTK as a "visualization" engine to prepare data for 
> OSG (vtkActorToOSG), and I am prepared to go that way, but that is not 
> particularly efficient in memory and speed as data has to be translated both 
> ways.
>
>
> I evaluated using either VTK and OSG for a project , but found the VTK scene 
> graph implementation is, in my experience,  poorly implemented, and 
> performance is not good once a scene graph gets more than a few levels deep. 
> VTK's abstraction from the underlying graphics API also hurts performance. 
> One of  my test cases showed a 20x performance hit over OSG.
>
> Andrew
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=23553#23553
>
>
>
>
>
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