[Gmsh] Medit file format

[Geordie McBain]

2010/5/6 Geordie McBain <gdmcbain at freeshell.org>:
> I'll write Pascal Frey and ask him about the vertex ordering of
> hexahedral elements.

Dr Frey replied:

Dear Dr Geordie,

In Medit (mesh format), hexahedral elements are numbered as follows:
suppose vertices 1,2,3,4 are in plane z=0 and 5,6,7,8 in plane z=1
then vertices 1,2,3,4 form a quadrilateral having a normal oriented
toward plane z=1
and vertex 5 is above vertex 1, 6 above 2, etc..
in other words, vertices are labelled quite "intuitively", as
depiected hereafter



Feel free to ask more question if something remains unclear.
Best regards
Pascal
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