Hi Christophe,Unfortunately it makes no difference ;-(I used cadexchanger from http://www.cadexchanger.com/ to convert the step file into a .brep file but this suffers with the same problem.If is do file: save as and type say file2.geo and with the GEO options box "save physical group lables" ONLY ticked I get a file with all the points, lines line loops etc. When I lad this the element tag numbers stay fixed, ( it is relatively simple geometry consisting of volumes bounded by plane surfaces) but I cannot get the surfaces to be filled (rendered) but only crossed faces even when I setGeometry.SurfaceType = 2 this makes it difficult to pick surfaces to put into surface physical groups infact changing Geometry.SurfaceType to 0 1 or 2 make no difference to the way the surfaces are displayed?Strangely if I load in my cad geometry file Merge "file.STEP"; etc then the surfaces displayed are as expected if one changes the setting of Geometry.SurfaceType, any ideas? Thanks in advance.Best regardsMark From: Christophe Geuzaine <[email protected]> To: Mark Smith <[email protected]> Cc: "[email protected]" <[email protected]> Sent: Wednesday, January 28, 2015 7:11 PM Subject: Re: [Gmsh] GMSH renumbers elemntaty tags on reload
> On 28 Jan 2015, at 15:36, Mark Smith <[email protected]> wrote: > > > Gmsh version 2.8.5 > > Hi, I load a step file generated in solidworks saved in AP203 or AP214 format > and load in into GMSH using a .geo file with the following lines > > // in gmsh options-geometry make sure the "cut and merge faces" is checked > // to remove duplicate entities on import of STEP file > Merge "file.STEP"; > Geometry.AutoCoherence = 1; > Coherence; > > in the options:geometry I get the model to display the surface labels with > their elementary tags number, if I hit reload the tag numbers change this > make defining physical surfaces impossible since the surfaces shown in the > surface physical groups keep changing;-( > I have not had this behaviour before and at this moment it is a show stopper, > is there a way of preventing this behaviour? > I don't see this behavior when I do the same thing over here (note that "Geometry.AutoCoherence = 1; Coherence;" will have no effect on your STEP data)... Does adding "Delete All;" before the "Merge" command help? > Thanks in advance > Mark > > > _______________________________________________ > gmsh mailing list > [email protected] > http://www.geuz.org/mailman/listinfo/gmsh -- Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine
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