On 11 Feb 2014, at 11:38, Sacconi, Andrea <[email protected]> wrote:
> Hi all GMSH users, > > I would like to ask you a quick question about the usage of the API C++ > classes to extract the connectivity of the mesh, once it has been created. > The setting is a planar mesh of triangles. I managed to create the GModel, > passing lines, planar surface and physical entities. So far, so good. > The problem is, how can I extract how many triangles I have got and their > vertices? It seems a silly question, but I am really confused about all the > methods I found. What is the method to traverse only the elements and extract > their vertices? > > For example, what is the difference between GVertex and MVertex? Same > questions for the other geometrical objects ... > In general, I need to pass the connectivity information to the C++ code I am > writing for my thesis simulations. > Basically: * a model is stored as a GModel * the GModel contains a bunch of geometrical entities derived from GEntity (GVertex, GEdge, GFace, GRegion) * each GEntity can store its mesh: i.e., both mesh elements, derived from MElement (MPoint, MLine, MTriangle, MTetrahedron, etc.), and mesh vertices (derived from MVertex) The 2009 paper contains the basics... but we should indeed write a short introduction to the API. Christophe > Any help would be much appreciated! > Kind regards, > Andrea > __________________________________________________________ > > Andrea Sacconi > PhD student, Applied Mathematics > AMMP Section, Department of Mathematics, Imperial College London, > London SW7 2AZ, UK > [email protected] > > _______________________________________________ > 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 _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh
