I'm trying import into deal.ii a mesh generated with Gmsh. The only
thing I know is that deal.ii doesn't accept triangular elements from
imported files.
I construct my grid in Gmsh and at the end I use the command 'Recombine
Surface' to recombine the triangular elements into quads. I save the
file in Gmsh V1.0 and I make sure that all the elements were quads, i.e.
all element types were 3 (4 node quadrangle).
Then, when I tried to import the mesh into deal.ii and it gave the
error:
terminate called after throwing an instance of
'dealii::StandardExceptions::ExcInternalError'
what(): --------------------------------------------------------
An error occurred in line <642> of file
</home/zerpiko/FEM/deal.II/source/grid/grid_reordering.cc> in function
static void dealii::GridReordering<dim,
spacedim>::invert_all_cells_of_negative_grid(const
std::vector<dealii::Point<spacedim> >&,
std::vector<dealii::CellData<dim> >&) [with int dim = 2, int spacedim =
2]
The violated condition was:
n_negative_cells==0 || n_negative_cells==cells.size()
The name and call sequence of the exception was:
ExcInternalError()
Additional Information:
(none)
--------------------------------------------------------
I think is something related with reordering cells. There are any other
restrictions that a mesh must fulfill? Tnks.
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