edge_edge2.h

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00001 // The libMesh Finite Element Library.
00002 // Copyright (C) 2002-2012 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
00003 
00004 // This library is free software; you can redistribute it and/or
00005 // modify it under the terms of the GNU Lesser General Public
00006 // License as published by the Free Software Foundation; either
00007 // version 2.1 of the License, or (at your option) any later version.
00008 
00009 // This library is distributed in the hope that it will be useful,
00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012 // Lesser General Public License for more details.
00013 
00014 // You should have received a copy of the GNU Lesser General Public
00015 // License along with this library; if not, write to the Free Software
00016 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00017 
00018 
00019 
00020 #ifndef LIBMESH_EDGE_EDGE2_H
00021 #define LIBMESH_EDGE_EDGE2_H
00022 
00023 // Local includes
00024 #include "libmesh/libmesh_common.h"
00025 #include "libmesh/edge.h"
00026 
00027 // C++ includes
00028 #include <cstddef>
00029 
00030 namespace libMesh
00031 {
00032 
00033 
00044 // ------------------------------------------------------------
00045 // Edge class definition
00046 class Edge2 : public Edge
00047 {
00048  public:
00049 
00053   explicit
00054   Edge2 (Elem* p=NULL) :
00055     Edge(Edge2::n_nodes(), p, _nodelinks_data) {}
00056 
00060   unsigned int n_sub_elem() const { return 1; }
00061 
00065   virtual bool is_vertex(const unsigned int i) const;
00066 
00070   virtual bool is_edge(const unsigned int i) const;
00071 
00075   virtual bool is_face(const unsigned int i) const;
00076 
00077   /*
00078    * @returns true iff the specified (local) node number is on the
00079    * specified side
00080    */
00081   virtual bool is_node_on_side(const unsigned int n,
00082                                const unsigned int s) const;
00083 
00084   /*
00085    * @returns true iff the specified (local) node number is on the
00086    * specified edge (i.e. "returns true" in 1D)
00087    */
00088   virtual bool is_node_on_edge(const unsigned int n,
00089                                const unsigned int e) const;
00090 
00091   /*
00092    * @returns true iff the element map is definitely affine within
00093    * numerical tolerances
00094    */
00095   virtual bool has_affine_map () const { return true; }
00096 
00101   virtual bool is_linear () const { return true; }
00102 
00106   ElemType type()  const { return EDGE2; }
00107 
00111   Order default_order() const { return FIRST; }
00112 
00113   virtual void connectivity(const unsigned int sc,
00114                             const IOPackage iop,
00115                             std::vector<dof_id_type>& conn) const;
00116 
00120   virtual Real volume () const;
00121 
00122 #ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
00123 
00127   bool infinite () const { return false; }
00128 
00129 #endif
00130 
00131 
00132 protected:
00133 
00137   Node* _nodelinks_data[2];
00138 
00139 
00140 
00141 #ifdef LIBMESH_ENABLE_AMR
00142 
00146   float embedding_matrix (const unsigned int i,
00147                          const unsigned int j,
00148                          const unsigned int k) const
00149   { return _embedding_matrix[i][j][k]; }
00150 
00155   static const float _embedding_matrix[2][2][2];
00156 
00157 #endif
00158 };
00159 
00160 } // namespace libMesh
00161 
00162 
00163 #endif // LIBMESH_EDGE_EDGE2_H
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Last modified: February 05 2013 19:54:46 UTC

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