Hi david thanks again.
cheers On Thu, Jul 23, 2009 at 9:04 PM, David Colignon <[email protected]>wrote: > As a first step, don't bother with the orientation of the surfaces, just > build the "surface loop" list of surfaces delimiting your volume, and try to > mesh the volume to see if everything is OK. > If you use the GUI to build your volume, the orientation of the surfaces is > automatically accounted for. > > Dave > > > Heye Zhang wrote: > >> Hi david >> >> thanks for your prompt reply. I am converting another file format(cmgui) >> into geo file(gmsh). In cmgui, there is no orientation of surface. So I am >> trying to figure out how to define the orientation for surface. To lineloop, >> it is quite simple and the sign is determined by the connecting node. >> >> but for surfaceloop, i just do not have a clue how to define the >> orientaion so that i can get a closed surface. It seems that in the manual >> this has not been stated. >> >> thanks >> >> On Thu, Jul 23, 2009 at 7:02 PM, David Colignon >> <[email protected]<mailto: >> [email protected]>> wrote: >> >> Hi, >> >> you can visualize the orientation of the surfaces (and the influence >> of the minus sign) by putting a non-zero value in >> Tools->Options->Geometry->Visibility->Normals box. >> >> idem for the mesh in Tools->Options->Mesh->Visibility->Normals >> >> Cheers, >> >> Dave >> >> -- David Colignon, Ph.D. >> Collaborateur Logistique du F.R.S.-FNRS >> CÉCI - Consortium des Équipements de Calcul Intensif >> ACE - Applied & Computational Electromagnetics >> Sart-Tilman B28 >> Université de Liège >> 4000 Liège - BELGIQUE >> Tél: +32 (0)4 366 37 32 >> Fax: +32 (0)4 366 29 10 >> WWW: http://hpc.montefiore.ulg.ac.be/ >> Agenda: >> http://www.google.com/calendar/embed?src=david.colignon%40gmail.com >> >> >> >> Heye Zhang wrote: >> >> HI there >> I am newer to gmsh. I read the tutorial and I have a question >> now. For line loop, there will be a sign to define the proper >> connection. but in for volume loop how to determine whether I >> should put a sign overthere? according to the normal of surface? >> >> -- Heye ZHANG >> >> >> >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> gmsh mailing list >> [email protected] <mailto:[email protected]> >> http://www.geuz.org/mailman/listinfo/gmsh >> >> >> >> >> >> -- >> Heye ZHANG >> > > -- Heye ZHANG
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