[Paraview] Save Data vtu format

[Moreland, Kenneth]

Triangulating only cells of type VTK_CONVEX_POINT_SET is actually more difficult than it sounds.  All non-triangular faces will be split into triangles.  If there is any neighbor cells that share these faces, they will also have to be split in some way to keep the interfaces consistent.  The splitting can then easily propagate to the neighbors' neighbors and so on.

-Ken


On 9/10/09 9:45 AM, "Adriano Gagliardi" <agagliardi at ara.co.uk> wrote:

I found the full declaration of the cell types in vtkCellTypes.h and came to
that conclusion. However, I'm not too clear on how ParaView handle's these
cell types, but I can worry about that another time. It would be nice to
have an option in Save Data to output all cell types equal to
VTK_CONVEX_POINT_SET as tetrahedrals, or a filter for identifying and
isolating these specific cells and tetrahedralising them. My workaround for
today involved tertrahedralising the whole mesh, which increased its size
7-fold so not the most practical option.

===================================

Adriano Gagliardi MEng PhD
Project Scientist
Computational Aerodynamics
Aircraft Research Association Ltd.
Manton Lane
Bedford

Tel: 01234 32 4644
E-mail: agagliardi at ara.co.uk
Url: www.ara.co.uk
-----Original Message-----
From: Berk Geveci [mailto:berk.geveci at kitware.com]
Sent: 10 September 2009 16:11
To: agagliardi at ara.co.uk
Cc: paraview at paraview.org
Subject: Re: [Paraview] Save Data vtu format

You probably have some sort of polyhedra that is getting converted to
VTK_CONVEX_POINT_SET.

-berk

On Thu, Sep 10, 2009 at 4:33 AM, Adriano Gagliardi<agagliardi at ara.co.uk>
wrote:
> I've recently written out some data from ParaView to .vtu format using
> File->Save Data. However, in the 'types' listing I have a small
> File->proportion
> of the cells that are of type 41? I can't find any reference to this
> type in the VTK file formats listing on the website (max type is 25
> for VTK_QUADTRATIC_HEXAHEDRON), although the latest that seems to be
> available for download is v4.2. Is this a new type supported in v5.2 only?
>
> ===================================
>
> Adriano Gagliardi MEng PhD
> Project Scientist
> Computational Aerodynamics
> Aircraft Research Association Ltd.
> Manton Lane
> Bedford
>
> Tel: 01234 32 4644
> E-mail: agagliardi at ara.co.uk
> Url: www.ara.co.uk
>
>
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   ****      Kenneth Moreland
    ***      Sandia National Laboratories
***********
*** *** ***  email: kmorel at sandia.gov
**  ***  **  phone: (505) 844-8919
    ***      web:   http://www.cs.unm.edu/~kmorel

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