[Gmsh] 3D normals opposites to 2D and surface normals

[Christophe Geuzaine]

Gaelle.GIBERT wrote:
> Hello,
> 
> I am using Gmsh to produce mesh that is used afterwards with an other
> program. Then, I need the normals to be well orientated in the 3D mesh.
> With the file .geo attached to this mail and the last version (2.2.5),
> Gmsh is returning 3D normals opposites to the 2D and surfaces normals.

Good catch: that's indeed a bug we need to fix.

> How can I resolve this ?

Use the "Netgen" 3D algorithm for now: this will not mess with the normals.

> 
> Thanks for your help,
> Gaelle Gibert
> 
> 
> 
> 
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-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine