[Gmsh] Problem with Reading the mesh generated into freefem.

[Christophe Geuzaine]

Here's a modified file that fixes the orientation (the original file mixes OpenCASACDE and the built-in kernel) and defines a nicer mesh size field.

Christophe

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> On 20 May 2019, at 04:31, G. D. McBain <gdmcbain at protonmail.com> wrote:
> 
>  
>> I checked also that when the program generates the mesh it displays a warning error due to It can?t orient the normal of the Surface.
>> 
> Yes, on running 'gmsh -2 Dominio.geo', I see this too:
> 
>     Warning : Could not orient normal of surface 1
> 
> I'm not immediately sure why though...  I continue to suspect that this warning is associated with the error from FreeFEM about triangular elements having negative areas, but I haven't been able to work out what the problem with Dominio.brep is, i.e. why Gmsh can't orient the Plane Surface.
> 
> I even get the same warning from Gmsh when trying to make a simple Plane Surface from either of the two Curve Loops separately.  That does seem odd to me since the second, which looks like an island (or is it a lake) is simple enough to be inspected manually in the Gmsh GUI and it looks fine.
> 
> Sorry, I'm not sure what to suggest from here...
> 
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? 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine