[Gmsh] pesky extrusion command

[Christophe Geuzaine]

Hello Matthias,

I've just tested your file. It seems to be a Linux specific issue (it
works with my version, compiled in debug mode, but it crashes with the
optimized build). I will recompile the Linux version without any fancy
optimization, and put it on the web site today.

Christophe

Matthias K Gobbert wrote:
> 
> Hi,
> 
> I am sorry to bother you with this pesky extrusion problem, but it may
> still have a problem.
> 
> The version of vianew.geo included sets up points, lines, and surfaces
> (numbered 26, 28, 30, ..., 42) only for z = 0, then tries to use Extrusion
> downwards and upwards to create the volume. Everything is Ruled,
> Transfinite, and Recombine'd, as far as I can tell. Then Extrusion is used
> with Recombine. But gmsh 1.24 has a fatal error on surface 64, which is
> the one obtained by extrusion from 42.
> 
> (I should say that I also have a triangular/tetragonal version of this
> geometry, i.e., same surfaces and extrusions, but without Ruled and
> Recombine. That one does not create a fatal error from gmsh, but there is
> a warning that it cannot swap triangles properly.)
> 
> I admit that I cannot guarantee that it is not my mistake somehow in the
> way I use gmsh-commands. I am still not always sure about, whether order
> and orientation of things matter in 3-D. So, I would really appreciate
> feedback on whether there are any problems with my usage of gmsh-commands.
> 
> Thanks for making the software available and all your efforts,
> 
> Matthias
> 
> Matthias K. Gobbert                                Office: Math/Psyc 416
> Department of Mathematics and Statistics          Hours: TTh 03:00-03:50
> University of Maryland, Baltimore County           Phone: (410) 455-2404
> 1000 Hilltop Circle                                  Fax: (410) 455-1066
> Baltimore, MD 21250                                gobbert at math.umbc.edu
> U.S.A.                                 http://www.math.umbc.edu/~gobbert
> 
>   ------------------------------------------------------------------------
>                  Name: vianew.geo
>    vianew.geo    Type: Plain Text (TEXT/PLAIN)
>              Encoding: BASE64
> 
>                   Name: gmsh-errors
>    gmsh-errors    Type: Plain Text (TEXT/PLAIN)
>               Encoding: BASE64

-- 
Christophe Geuzaine

Tel: 32 (0) 4 366 37 10    http://geuz.org
Fax: 32 (0) 4 366 29 10    mailto:Christophe.Geuzaine at ulg.ac.be