[vtkusers] Getting Cutplanes more interactive?

[Saeger, Marian]

Hi!

Thanks, I will try that.

But hasn't the ParaView-Version compiled with the same sources? I mean the
one that shipped together with the sources on the CD.

I wouldn't be confused about a factor 2x difference between ParaView and my
custom application, but right now ParaView does cutting that large dataset
roundabout 20 times faster.....respect to ParaView, but that makes my
application pretty lame. =)

Greetings,

Marian

-----Ursprüngliche Nachricht-----
Von: Jeff Lee [mailto:jeff at cdnorthamerica.com] 
Gesendet: Donnerstag, 6. Mai 2004 14:00
An: Saeger, Marian
Cc: vtkusers at vtk.org
Betreff: Re: AW: [vtkusers] Getting Cutplanes more interactive?



Saeger, Marian wrote:

>Hi!
>
>I'm using VTK 4.2.3 - the one that shipped with the books.
>
>Would that include your optimizations?!? =|
>  
>
Sadly, it does not include the changes.  I made them just after the 
cut.  The changes I made are isolated to vtkCutter.cxx,h, so you could 
just grab them from cvs.  vtkCutter.cxx-v1.75 and vtkCutter.h-v1.60 
should get you the changes without having to upgrade to the dev 
version.  Of course, you could always just get either the bleeding-edge 
dev version, or the interim release 4.4.
-Jeff

>Greetings,
>
>Marian 
>
>
>
>-----Ursprüngliche Nachricht-----
>Von: Jeff Lee [mailto:jeff at cdnorthamerica.com] 
>Gesendet: Donnerstag, 6. Mai 2004 00:50
>An: Saeger, Marian
>Cc: vtkusers at vtk.org
>Betreff: Re: [vtkusers] Getting Cutplanes more interactive?
>
>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
>>
>>
>> 
>>
>>    
>>
>_______________________________________________
>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
>
>
>  
>