[Gmsh] howto import STEP/IGES/BREP file?

[=?windows-1252?Q?Jean-Fran=8D=E7ois_Remacle?=]

Mireille Gaillard a écrit :
>
> Hello Dave,
>
> Thank you for quick answer.
> The recent gmsh nightly build can even not import the .iges file (I have
> attached it) and produces the same message and fatal error than
> previously (I have attached the gmsh-errors file) immediatly after
> asking for importation (and still not for meshing).
>

You have put the point on one known bug that exists in the current 
release of gmsh.

By default, a constant mesh size  of a tenth of the size of the model  
is assigned to the
model.

When the closure surface consist in only one curve, then  it can happen that
only 2 points are present on the mesh of the contour, leading to a 
problem. A
new release of gmsh will be produced within a week, with this (very 
simple) fix.

Yet, tou can do something like

 gmsh Source3D.iges -clcurv -clmin 1 -clmax 10 -2

and the surface mesh is correct.

Note that you iges is not closed so that volume mesh cannot be performed 
(see the picture).

Jean-François Remacle

> Many thanks for advises,
> Mireille
>
> David Colignon a écrit :
> > Hi Mireille,
> >
> > can you try with a recent nightly build (
> > http://geuz.org/gmsh/bin/Linux/gmsh-nightly-Linux.tgz ), and send us the
> > .iges file if the problem persists ?
> >
> > Cheers,
> >
> > Dave
> >
>
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>
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