location_maps.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2019 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_LOCATION_MAPS_H
#define LIBMESH_LOCATION_MAPS_H
 
#include "libmesh/libmesh_config.h"
 
// Local Includes
#include "libmesh/libmesh_common.h"
#include "libmesh/point.h"
 
// C++ Includes
#include <unordered_map>
#include <vector>
 
namespace libMesh
{
 
// Forward Declarations
class Elem;
class MeshBase;
class Node;
 
 
template <typename T>
class LocationMap
{
  typedef std::unordered_multimap<unsigned int, T *> map_type;
public:
  void init(MeshBase &);
 
  void clear() { _map.clear(); }
 
  void insert(T &);
 
  bool empty() const { return _map.empty(); }
 
  T * find(const Point &,
           const Real tol = TOLERANCE);
 
  Point point_of(const T &) const;
 
protected:
  unsigned int key(const Point &);
 
  void fill(MeshBase &);
 
private:
  map_type          _map;
  std::vector<Real> _lower_bound;
  std::vector<Real> _upper_bound;
};
 
} // namespace libMesh
 
 
#endif // LIBMESH_LOCATION_MAPS_H