[vtkusers] Getting Cutplanes more interactive?

[Jeff Lee]

Hi,
Which version of vtk are you using?  I committed some optimizations for 
unstructured datasets about 10 months ago...
-Jeff

Saeger, Marian wrote:

>Hi!
>
>I am visualizing an unstructured grid with 5 associated cell data arrays,
>~2.000.000 scalar values each.
>
>I'm using vtkImplicitPlaneWidget in association with vtkCutter to let the
>user navigate through the data. Unfortunately, the interactive response is
>very bad on a 2.8GhZ CPU. Every time the cutplane needs to be updated, there
>is a ~10s delay.
>
>I was wondering if this is a known performance issue related to unstructured
>grids? I guess it takes some time to access the data and interpolate the
>values - but are there any hints how to speed up that process? Especially
>because I want to update the plane on every InteractionEvent, not only on
>EndInteractionEvent.
>
>vtkPlaneWidget, in opposite to vtkImplicitPlaneWidget, has the opportunity
>to specify grid resolution. To speed up things during interaction one could
>reduce that resolution. I found no option for vtkImplicitPlane to do similar
>things....=|
>
>Or may vtkCutter be the bottleneck? What would be more likely to eat up
>calculation time - calculating the cutplane, or probing the cell data
>arrays?!? =|
>
>Thanks in advance for any useful hints!
>
>Greetings,
>
>Marian
>
>
>_______________________________________________
>This is the private VTK discussion list. 
>Please keep messages on-topic. Check the FAQ at: <http://public.kitware.com/cgi-bin/vtkfaq>
>Follow this link to subscribe/unsubscribe:
>http://www.vtk.org/mailman/listinfo/vtkusers
>
>
>  
>