> On 29 Aug 2016, at 22:33, Michael Hiller <postanmic...@yahoo.com> wrote: > > Hello Christophe, > did you ever get an answer to following archived email? > > http://onelab.info/pipermail/gmsh/2013/007826.html >
No... > I am not a coding expert but I found following description on the occ-site > which seems to be exactly what me and the Matthias were looking for: > > https://www.opencascade.com/doc/occt-6.7.0/overview/html/user_guides__step.html#occt_step_7_1_1 Isn't this describing another file format (XDE) ? If you find some examples showing code to extract useful coloring/grouping info from step or brep files don't hesitate to post them: it's still something we would like to explore (eg to define physical groups automatically) > > It would be great if you could implement color and name STEP import. > > There seems to be the possibility for layer import as well which would be a > nice extra: > https://www.opencascade.com/doc/occt-6.9.1/refman/html/class_s_t_e_p_c_a_f_control___reader.html#afa81144a8d9116e1ffa0af30a70f928e > > Let me know if I can check or provide more information. > > Thank you and best regards > Michael > > > From: Michael Hiller <postanmic...@yahoo.com> > To: "g...@geuz.org" <g...@geuz.org> > Sent: Thursday, August 25, 2016 12:55 PM > Subject: STEP import // tangent surface selection > > Dear Gmsh developers, dear users, > > first of all I want to thank you for fixing the higher order compound feature > – it works like charm now! > > I am trying to find a solution how to easily define "Compound Surfaces" now. > I have a solid STEP model with almost 1500 surface patches. In the end I want > all patches that share a tangent edge to be meshed together as a single > compound mesh. > > At the moment I have to manually select the patches. It helps to hide by > group selection with pressing STRG and drawing a rectangular box in the GUI. > But still this is cumbersome for the complete part. > > So I was thinking maybe there is something like "Reclassify 2D" for STEP > files which I couldn’t find. > > Unfortunately I also cannot use some helpful STEP options like exporting > feature names or surface colors. With the first option I could do the > compound definitions inside CAD. This would generally be a neat feature: you > could parametrically define interfaces inside CAD and use them in GMSH for > physical entities. I think that the OCC kernel provides option. > > Also I don't see an obvious way how to change the surface IDs stored inside > the STEP file. This could help by writing a little python script to group > surfaces by ordering them inside the step file. > > I would be very happy if anyone could provide some further ideas on how to > approach this more conveniently. > > Thank you and best regards > Michael > > >
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