> On 29 Jan 2015, at 13:37, Mark Smith <[email protected]> wrote: > > Hi Christophe, > I agree that saving the cad geometry to a .geo file it is not the way to go > but at least the surface numbers don't change on reload ;-) > I have some other cad geometry where I don't get this problem, which is why > perhaps you haven't seen it? have you any other suggestions I could try?
Maybe the best would be for you to send an (small) step file that exhibits the problem? We could try to see where the non-deterministic numbering comes from. > Regards > Mark > > From: Christophe Geuzaine <[email protected]> > To: Mark Smith <[email protected]> > Cc: "[email protected]" <[email protected]> > Sent: Thursday, January 29, 2015 11:19 AM > Subject: Re: [Gmsh] GMSH renumbers elemntaty tags on reload > > > > On 29 Jan 2015, at 10:45, Mark Smith <[email protected]> wrote: > > > > 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 set > > Mark - Do not save your .brep/.step as a .geo! Gmsh is designed to work > directly with the native files - "translating" them to .geo is only there for > very specific uses or debugging purposes: the .geo CAD kernel is far too > rudimentary to handle all the complexities of .step/.brep > > > > Geometry.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 regards > > Mark > > > > > > 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 > > > > > > > > > > > > > > > -- > Prof. Christophe Geuzaine > University of Liege, Electrical Engineering and Computer Science > http://www.montefiore.ulg.ac.be/~geuzaine > > > > -- Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh
