[Gmsh] node ordering of triangles

Mikhail Titov mlt at gmx.us
Wed May 26 21:00:25 CEST 2010


It depends on what you have in your GEOmetry file. For instance, you can
swap line orientation using negative numbers while creating line loop or
surface. Look for word (ctrl+f) 'negative'
http://www.geuz.org/gmsh/doc/texinfo/gmsh.html#Lines .

Mikhail


> -----Original Message-----
> From: gmsh-bounces at ace20.montefiore.ulg.ac.be [mailto:gmsh-
> bounces at ace20.montefiore.ulg.ac.be] On Behalf Of Bart Vandewoestyne
> Sent: Wednesday, May 26, 2010 10:01 AM
> To: gmsh at geuz.org
> Subject: [Gmsh] node ordering of triangles
> 
> Hello all,
> 
> I'm taking my first steps with gmsh and I noticed that there
> seems to be an inconsistency between the online documentation and
> the real gmsh output.
> 
> At http://www.geuz.org/gmsh/doc/texinfo/gmsh.html#Node-ordering
> it is graphically illustrated that the node ordering for a
> triangle element is counterclockwise.  However, the following
> file produced with gmsh 2.4.2 seems to have clockwise ordering
> for the nodes of a triangle:
> 
> https://www.kuleuven-
> kortrijk.be/~bartv/square_with_physical_entities.msh
> 
> Is this indeed a bug in the documentation or am i misinterpreting
> something?
> 
> Kind regards,
> Bart
> 
> --
> 	"Share what you know.  Learn what you don't."
> 
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