point.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2024 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_POINT_H
#define LIBMESH_POINT_H

// Local includes
#include "libmesh/hashing.h"
#include "libmesh/type_vector.h"

namespace libMesh
{

class Point : public TypeVector<Real>
{
public:

  Point (const Real x=0.,
         const Real y=0.,
         const Real z=0.) :
    TypeVector<Real> (x,y,z)
  {}

  Point (const Point & p) = default;

  Point (const TypeVector<Real> & p) :
    TypeVector<Real> (p)
  {}

  Point& operator=(const Point & p) = default;

  template <typename T,
            typename = typename
              boostcopy::enable_if_c<ScalarTraits<T>::value,void>::type>
  Point (const T x) :
    TypeVector<Real> (x,0,0)
  {}

  ~Point() = default;

protected:

  friend class Node;
};

} // namespace libMesh

namespace std
{
template <>
struct hash<libMesh::Point>
{
  std::size_t operator()(const libMesh::Point & p) const
    {
      std::size_t seed = 0;
      for (int d=0; d != LIBMESH_DIM; ++d)
        libMesh::boostcopy::hash_combine(seed, std::hash<libMesh::Real>()(p(d)));
      return seed;
    }
};

}

#endif // LIBMESH_POINT_H