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<p class="MsoNormal">Thank you Cristophe. It looks wonderful!</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I generated the mesh and effectively now is readable by freefem.
</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Sometimes ,It is very tricky to handle 2d meshes in gmsh, and now with this methodology I have a way to work with 2d geometries in a more straight way.</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best regards</p>
<p class="MsoNormal">Jacob</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>De:</b> Christophe Geuzaine <cgeuzaine@uliege.be><br>
<b>Enviado:</b> Monday, May 20, 2019 6:24:48 AM<br>
<b>Para:</b> G. D. McBain<br>
<b>Cc:</b> Jacob Abdelfatah Ndioubnane; gmsh<br>
<b>Asunto:</b> Re: [Gmsh] Problem with Reading the mesh generated into freefem.</font>
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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.<br>
<br>
Christophe<br>
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<br>
> On 20 May 2019, at 04:31, G. D. McBain <gdmcbain@protonmail.com> wrote:<br>
> <br>
> <br>
>> 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.<br>
>> <br>
> Yes, on running 'gmsh -2 Dominio.geo', I see this too:<br>
> <br>
> Warning : Could not orient normal of surface 1<br>
> <br>
> 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.<br>
> <br>
> 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.<br>
> <br>
> Sorry, I'm not sure what to suggest from here...<br>
> <br>
> _______________________________________________<br>
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> gmsh@onelab.info<br>
> <a href="http://onelab.info/mailman/listinfo/gmsh">http://onelab.info/mailman/listinfo/gmsh</a><br>
<br>
— <br>
Prof. Christophe Geuzaine<br>
University of Liege, Electrical Engineering and Computer Science <br>
<a href="http://www.montefiore.ulg.ac.be/~geuzaine">http://www.montefiore.ulg.ac.be/~geuzaine</a><br>
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