point.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2026 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
              std::enable_if<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