cell_inf.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_CELL_INF_H
00021 #define LIBMESH_CELL_INF_H
00022 
00023 #include "libmesh/libmesh_config.h"
00024 
00025 #ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
00026 
00027 // Local includes
00028 #include "libmesh/elem.h"
00029 
00030 namespace libMesh
00031 {
00032 
00033 
00034 
00035 
00042 // ------------------------------------------------------------
00043 // InfCell class definition
00044 class InfCell : public Elem
00045 {
00046 public:
00047 
00051   InfCell (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   {}
00058 
00062   unsigned int dim () const { return 3; }
00063 
00068   bool infinite () const { return true; }
00069 
00073   Point origin () const;
00074 
00075 };
00076 
00077 
00078 // ------------------------------------------------------------
00079 // InfCell inline functions
00080 inline
00081 Point InfCell::origin () const
00082 {
00083   return ( this->point(0)*2 - this->point( this->n_vertices()/2 ) );
00084 }
00085 
00086 
00087 } // namespace libMesh
00088 
00089 
00090 #endif // ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
00091 
00092 #endif // LIBMESH_CELL_INF_H
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