[Paraview] RE: Seeding streamlines and 2 questions : Data Topologies and Sharp autostereo rendering

[Simone Crippa]

Hej,



On Tue, 2006-03-28 at 09:47 -0700, Richard Strelitz wrote:
> Answer 1:  (for Stephen Wornom in France, a respectable distance from  
> Vicksburg, MS)
> Streamlines are seeded by using a vtk-geometry; even a set of points  
> as an unstructured points object will work.  VTK does not have a  
> topology extractor which would help you to find the vrotex cores and  
> the strakes.
> 

Interesting ... this means that instead of "line" and "point cloud" in
the streamtracer seed selection box, one could have something like
"extracted topology" ... provided an appropriate filter? What about a
cut between a custom plane and a surface mesh? Could the resulting curve
be used for seeding the streamlines?


> Question 1:
>    Is there interest in a topology filter?  Any features that you'd  
> like to have?  I need to write one, and it would be nice to have a  
> collaborator or even an interested party.

Stockholm, Sweden is also a respectable distance from Vicksburg, MS ...
and I have interest in a topology extraction filter ... that's another
thing in common with Stephen Wornom (presumably :-)

A feature extraction filter as in Ensight (I think using the semi-open
MIT FX toolkit) would be a great thing to have! But personally, I would
be more that happy to have just a "simple" cut to use as a seed. 

So ... interested party: definitely; collaborator: if I can help, sure!



Regards, Simone



> 
> Question 2:
>    I have several Sharp 15" LCD autostereo panels plus the SDK for  
> win and XP.  Has anyone toyed with a rendering module for these  
> displays?  I quite like them, and although everyone wants stereo, no  
> one wants to cede their desk to the CRT needed to display stereo.
> 
> Richard Strelitz,
> 
> 
> 
> 
> Message: 6
> Date: Tue, 28 Mar 2006 09:46:21 +0200
> From: Stephen Wornom <Stephen.Wornom at sophia.inria.fr>
> Subject: [Paraview] streamline surface seeding
> To: pview <paraview at paraview.org>
> Message-ID: <4428E9CD.3060000 at sophia.inria.fr>
> Content-Type: text/plain; charset=us-ascii; format=flowed
> 
> The flow is external about a 3D cyl with strakes. I amI would like to
> visualize streamlines behind the strakes and near the surface. The
> streamlines created using a line or cloud are of little interest as they
> miss the vortices behind the strakes. Is there a way to start the
> streamlines from the cylinder and strake surfaces?
> Stephen
> 
> 
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-- 
Simone Crippa
Research assistant, Dipl.-Ing.
Royal Institute of Technology (KTH)
Aeronautical and Vehicle Engineering
Division of Aerodynamics
Teknikringen 8
SE-10044 Stockholm, Sweden
+46 (0)8 790 646