sfc_partitioner.h

一个用来实现偏微分方程中网格的计算库

// $Id: sfc_partitioner.h 2789 2008-04-13 02:24:40Z roystgnr $

// The libMesh Finite Element Library.
// Copyright (C) 2002-2007  Benjamin S. Kirk, John W. Peterson
  
// 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 __sfc_partitioner_h__
#define __sfc_partitioner_h__

// C++ Includes   -----------------------------------
#include <string>

// Local Includes -----------------------------------
#include "partitioner.h"



/**
 * The \p SFCPartitioner uses a Hilbert or Morton-ordered space
 * filling curve to partition the elements.
 */

// ------------------------------------------------------------
// SFCPartitioner class definition
class SFCPartitioner : public Partitioner
{
 public:

  /**
   * Constructor.  Sets the default space filling
   * curve type to "Hilbert".
   */
  SFCPartitioner () :
    _sfc_type ("Hilbert")
  {}

  /**
   * Sets the type of space-filling curve to use.  Valid types are
   * "Hilbert" (the default) and "Morton"
   */
  void set_sfc_type (const std::string& sfc_type);

  
protected:
  
  /**
   * Partition the \p MeshBase into \p n subdomains.
   */
  virtual void _do_partition (MeshBase& mesh,
			      const unsigned int n);

  
private:

  
  /**
   * The type of space-filling curve to use.  Hilbert by default.
   */
  std::string _sfc_type;
  
};



// ------------------------------------------------------------
// LinearPartitioner inline members
inline
void SFCPartitioner::set_sfc_type (const std::string& sfc_type)
{
  libmesh_assert ((sfc_type == "Hilbert") ||
	  (sfc_type == "Morton"));

  _sfc_type = sfc_type;
}




#endif // #define __sfc_partitioner_h__