[Gmsh] Strange behavior meshing / exporting

[Andreas Puettmann]

On 05/03/2011 01:26 AM, Geordie McBain wrote:
> Hello.  I believe Gmsh's meshing algorithms are random, so even
> repeating identically the meshing and saving options might give you a
> different mesh.

Ah OK, thank you for your hints. I noticed now that indeed none of the 
results I sent is deterministic.

However, I can reproduce the exact same .msh file when I do not use the 
GUI but run the mesher in batch mode:
$ gmsh -3 column.geo

The console output tells me that in both cases (GUI and batch) the same 
(?) Delaunay algorithm is used. So why does the GUI based approach 
include a random element, while the batch mode obviously does not? What 
is the difference between them? Maybe one of the developers can shed 
some light on that?

Andreas

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Dipl.-Ing. Andreas Puettmann

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