[Gmsh] about surface loop

[Heye Zhang]

Hi david

thanks for your prompt reply. I am converting another file format(cmgui)
into geo file(gmsh). In cmgui, there is no orientation of surface. So I am
trying to figure out how to define the orientation for surface. To lineloop,
it is quite simple and the sign is determined by the connecting node.

but for surfaceloop, i just do not have a clue how to define the orientaion
so that i can get a closed surface. It seems that in the manual this has not
been stated.

thanks

On Thu, Jul 23, 2009 at 7:02 PM, David Colignon <David.Colignon at ulg.ac.be>wrote:

> Hi,
>
> you can visualize the orientation of the surfaces (and the influence of the
> minus sign) by putting a non-zero value in
> Tools->Options->Geometry->Visibility->Normals box.
>
> idem for the mesh in Tools->Options->Mesh->Visibility->Normals
>
> Cheers,
>
> Dave
>
> --
> David Colignon, Ph.D.
> Collaborateur Logistique du F.R.S.-FNRS
> CÉCI - Consortium des Équipements de Calcul Intensif
> ACE - Applied & Computational Electromagnetics
> Sart-Tilman B28
> Université de Liège
> 4000 Liège - BELGIQUE
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> Fax: +32 (0)4 366 29 10
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>
>
>
> Heye Zhang wrote:
>
>> HI there
>>  I am newer to gmsh. I read the tutorial and I have a question now. For
>> line loop, there will be a sign to define the proper connection. but in for
>> volume loop how to determine whether I should put a sign overthere?
>> according to the normal of surface?
>>
>> --
>> Heye ZHANG
>>
>>
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>


-- 
Heye ZHANG
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