sfc_partitioner.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_SFC_PARTITIONER_H
#define LIBMESH_SFC_PARTITIONER_H
 
// Local Includes
#include "libmesh/partitioner.h"
 
// C++ Includes
#include <memory>
#include <string>
 
namespace libMesh
{
 
class SFCPartitioner : public Partitioner
{
public:
 
  SFCPartitioner () :
    _sfc_type ("Hilbert")
  {}
 
  SFCPartitioner (const SFCPartitioner &) = default;
  SFCPartitioner (SFCPartitioner &&) = default;
  SFCPartitioner & operator= (const SFCPartitioner &) = default;
  SFCPartitioner & operator= (SFCPartitioner &&) = default;
  virtual ~SFCPartitioner() = default;
 
  virtual PartitionerType type () const override;
 
  virtual std::unique_ptr<Partitioner> clone () const override
  {
    return std::make_unique<SFCPartitioner>(*this);
  }
 
  virtual bool partitions_from_scratch () const override { return true; }
 
  void set_sfc_type (std::string sfc_type)
  {
    libmesh_assert ((sfc_type == "Hilbert") ||
                    (sfc_type == "Morton"));
 
    _sfc_type = std::move(sfc_type);
  }
 
  virtual void partition_range(MeshBase & mesh,
                               MeshBase::element_iterator it,
                               MeshBase::element_iterator end,
                               const unsigned int n) override;
 
protected:
 
  virtual void _do_partition (MeshBase & mesh,
                              const unsigned int n) override;
 
 
private:
 
  std::string _sfc_type;
};
 
} // namespace libMesh
 
#endif // LIBMESH_SFC_PARTITIONER_H