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]>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] >> http://www.geuz.org/mailman/listinfo/gmsh >> > > -- Heye ZHANG
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