edge_inf_edge2.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2014 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner

// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.

// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA



#ifndef LIBMESH_EDGE_INF_EDGE2_H
#define LIBMESH_EDGE_INF_EDGE2_H

#include "libmesh/libmesh_common.h"

#ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS

// Local includes
#include "libmesh/edge.h"

// C++ includes
#include <cstddef>

namespace libMesh
{


class InfEdge2 : public Edge
{
public:

  explicit
  InfEdge2 (Elem* p=NULL) :
    Edge(InfEdge2::n_nodes(), p, _nodelinks_data) {}

  unsigned int n_sub_elem() const { return 1; }

  virtual bool is_vertex(const unsigned int i) const;

  virtual bool is_edge(const unsigned int i) const;

  virtual bool is_face(const unsigned int i) const;

  /*
   * @returns true iff the specified (local) node number is on the
   * specified side
   */
  virtual bool is_node_on_side(const unsigned int n,
                               const unsigned int s) const;

  /*
   * @returns true iff the specified (local) node number is on the
   * specified edge (i.e. "returns true" in 1D)
   */
  virtual bool is_node_on_edge(const unsigned int n,
                               const unsigned int e) const;

  ElemType type()  const { return INFEDGE2; }

  Order default_order() const { return FIRST; }

  virtual void connectivity(const unsigned int se,
                            const IOPackage iop,
                            std::vector<dof_id_type>& conn) const;

#ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS

  bool infinite () const { return true; }

  Point origin () const;

#endif


protected:

  Node* _nodelinks_data[2];



#ifdef LIBMESH_ENABLE_AMR

  float embedding_matrix (const unsigned int,
                          const unsigned int,
                          const unsigned int) const
  { libmesh_not_implemented(); return 0.; }

#endif
};




// ------------------------------------------------------------
// InfEdge2 class member functions
inline
Point InfEdge2::origin () const
{
  return ( this->point(0)*2 - this->point(1) );
}


} // namespace libMesh

#endif

#endif // LIBMESH_EDGE_INF_EDGE2_H