[vtkusers] vtkSTLWriter strongly confusing behavior

[Frederic Danesi]

The reader acts as it has to with such a simple file format. STL files only
include the geometry (coordinates of each points of the triangles), not the
topology. It does not read actual mesh. That's not its purpose. 
You used the STLWriter to save a mesh ... but when doing that, you've lost
everything that matters in the mesh. 
You should have use a polydataWriter and a polodataReader ...

Fred.

Cordialement,
F.Danesi
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-----Message d'origine-----
De : Dominik Szczerba [mailto:dominik at itis.ethz.ch] 
Envoyé : mercredi 19 août 2009 22:15
À : Frederic Danesi
Cc : 'VTK users group'
Objet : Re: [vtkusers] vtkSTLWriter strongly confusing behavior

You may be right, but then I would still argue the reader should not do 
it as it does not read the actual mesh in the file - this is not less 
confusing. Agree?

- Dominik

Frederic Danesi wrote:
> I think that there is no such thing as merging in the STLWriter, since a
STL
> file is basically only the coordinates of the points, without any ID.
> The merging operation probably happen when you load your STL, since the
> coincident points have the same coordinates and are thus considered as
> unique point ...
> Fred.
> 
> Cordialement,
> F.Danesi


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