Bug#751464: gmsh: Merge "..." + Translate gives wrong mesh

[Christophe Geuzaine]

On 13 Jun 2014, at 10:31, Ansgar Burchardt <ansgar at debian.org> wrote:

> Package: gmsh
> Version: 2.8.4+dfsg-1+b1
> Severity: normal
> 
> Merging a .geo file and then translating the volume in it results in a
> wrong mesh.
> 
> I've attached an example: the unit cube (0,0,0) to (1,1,1) is
> translated along the z-axis. The translated cube is defined by the
> corners (0,0,1) and (1,1,2). However the resulting mesh has a node on
> the z=0 plane (where z should be 1) and another on the z=1 plane that
> belongs on the z=2 plane.
> 
> Run "gmsh -3 cube1.geo" or choose Mesh->3D in the GUI to reproduce the
> problem. One has to rotate the cube to see the problem. Or look at
> these nodes in the .msh file:
> 
>    9 0.5 0.5 0
>    10 0.5 0.5 1
> 
> The problem does not happen when using Include instead of Merge or
> when including the contents of unit-cube.geo directly.
> 

Thanks for the report; this is fixed in Gmsh SVN.



> Ansgar
> 
> -- System Information:
> Debian Release: jessie/sid
>  APT prefers testing
>  APT policy: (500, 'testing'), (100, 'unstable'), (1, 'experimental')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 3.14-1-amd64 (SMP w/8 CPU cores)
> Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> 
> Versions of packages gmsh depends on:
> ii  libann0                      1.1.2+doc-5
> ii  libblas3 [libblas.so.3]      1.2.20110419-7
> ii  libc6                        2.19-1
> ii  libfltk-gl1.3                1.3.2-5
> ii  libfltk-images1.3            1.3.2-5
> ii  libfltk1.3                   1.3.2-5
> ii  libgcc1                      1:4.9.0-5
> ii  libgl1-mesa-glx [libgl1]     10.1.4-1
> ii  libgl2ps0                    1.3.8-1
> ii  libglu1-mesa [libglu1]       9.0.0-2
> ii  libjpeg8                     8d-2
> ii  liblapack3 [liblapack.so.3]  3.5.0-2
> ii  libmed1                      3.0.6-5
> ii  liboce-foundation8           0.15-4
> ii  liboce-modeling8             0.15-4
> ii  libopenmpi1.6                1.6.5-8
> ii  libpng12-0                   1.2.50-1
> ii  libstdc++6                   4.9.0-5
> ii  libtet1.5                    1.5.0-3
> ii  libx11-6                     2:1.6.2-2
> ii  mpi-default-bin              1.0.2+nmu1
> 
> Versions of packages gmsh recommends:
> pn  gmsh-doc  <none>
> 
> gmsh suggests no packages.
> 
> -- no debconf information
> <cube1.geo><unit-cube.geo><cube1.msh>

-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine