NAME

       geo_element - element of a mesh

DESCRIPTION

       Defines geometrical elements and sides as a set of vertice and edge indexes.  This element
       is   obtained   after   a   Piola   transformation   from   a   reference   element   (see
       reference_element(2)).  Indexes are related to arrays of edges and vertices.  These arrays
       are included in the description of the mesh.  Thus, this class is related of a given  mesh
       instance (see geo(2)).

EXAMPLE

       This is the test of geo_element:

           geo_element_auto<> K;
           K.set_name('t') ;
           cout << "n_vertices: " << K.size()      << endl
                << "n_edges   : " << K.n_edges()   << endl
                << "dimension : " << K.dimension() << endl << endl;
           for(geo_element::size_type i = 0; i < K.size(); i++)
               K[i] = i*10 ;
           for(geo_element::size_type i = 0; i < K.n_edges(); i++)
               K.set_edge(i, i*10+5) ;
           cout << "vertices: local -> global" << endl;
           for (geo_element::size_type vloc = 0; vloc < K.size(); vloc++)
               cout << vloc << "-> " << K[vloc] << endl;
           cout << endl
                << "edges: local -> global" << endl;
           for (geo_element::size_type eloc = 0; eloc < K.n_edges(); eloc++) {
               geo_element::size_type vloc1 = subgeo_local_vertex(1, eloc, 0);
               geo_element::size_type vloc2 = subgeo_local_vertex(1, eloc, 1);
               cout << eloc << "-> " << K.edge(eloc) << endl
                    << "local_vertex_from_edge(" << eloc
                    << ") -> (" << vloc1 << ", " << vloc2 << ")" << endl;
           }

SEE ALSO

       reference_element(2), geo(2)