face.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_FACE_H
00021 #define LIBMESH_FACE_H
00022 
00023 // Local includes
00024 #include "libmesh/elem.h"
00025 
00026 
00027 namespace libMesh
00028 {
00029 
00030 // Forward declarations
00031 class Mesh;
00032 
00033 
00034 
00041 // ------------------------------------------------------------
00042 // Face class definition
00043 class Face : public Elem
00044 {
00045 public:
00046 
00051   Face (const unsigned int nn,
00052         const unsigned int ns,
00053         Elem* p,
00054         Elem** elemlinkdata,
00055         Node** nodelinkdata) :
00056     Elem(nn, ns, p, elemlinkdata, nodelinkdata) {}
00057 
00061   unsigned int dim () const { return 2; }
00062 
00067   unsigned int n_faces() const { return 0; }
00068 
00072   AutoPtr<Elem> build_edge (const unsigned int i) const
00073     { return build_side(i); }
00074 
00075   /*
00076    * is_edge_on_side is trivial in 2D
00077    */
00078   virtual bool is_edge_on_side(const unsigned int e,
00079                                const unsigned int s) const
00080     { return (e == s); }
00081 
00082 //   /**
00083 //    * @returns 2
00084 //    */
00085 //   unsigned int n_children_per_side(const unsigned int) const { return 2; }
00086 
00087 #ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
00088 
00093   bool infinite () const { return false; }
00094 
00095 #endif
00096 
00097 };
00098 
00099 } // namespace libMesh
00100 
00101 #endif // LIBMESH_FACE_H
00102 
00103 
00104 
00105
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