[Gmsh] igs to geo

[Fabian Braennstroem]

Hi Christophe,

* On 20 Jul 2008 * Christophe Geuzaine wrote:

> Fabian Braennstroem wrote:
>> Hi,
>>
>>     I have a small problem, when importing an igs (exported by
>>             ICEM) geometry. Actually the import works well,
>>     but as soon as I save it as a geo file, I get a lot more
>>     points then in the igs file. I attach to snapshots. Do I
>>     do anything wrong?
>
> Not really: the geo export is pretty much there for debugging purposes  
> only. The reason you get more points is probably that the straight lines  
> in the iges files are represented e.g. by splines instead of line 
> segments.
>
> Our goal is to mesh iges/step files directly, without converting them  
> into geo format first...

Did not know that; sounds nice.

>
>>     The view is an extraction of a simple diffuser, which I
>>     want to mesh with hexa elements.
>>
>
> ...but indeed, for this you would have to convert the iges file into geo  
> format, since we haven't (yet) interfaced the structured meshing commands 
> with general CAD files.

Sounds even better.

>
> Why is having more control points a problem?

It is actually not a problem, but the geo file gets
completely messy and I am not able to do the definition of
the mesh by hand!?

Thanks!
Fabian
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