smooth_projector.h

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/*
 * Copyright (c) 2016:  G-CSC, Goethe University Frankfurt
 * Author: Sebastian Reiter
 * 
 * This file is part of UG4.
 * 
 * UG4 is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 3 (as published by the
 * Free Software Foundation) with the following additional attribution
 * requirements (according to LGPL/GPL v3 §7):
 * 
 * (1) The following notice must be displayed in the Appropriate Legal Notices
 * of covered and combined works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (2) The following notice must be displayed at a prominent place in the
 * terminal output of covered works: "Based on UG4 (www.ug4.org/license)".
 * 
 * (3) The following bibliography is recommended for citation and must be
 * preserved in all covered files:
 * "Reiter, S., Vogel, A., Heppner, I., Rupp, M., and Wittum, G. A massively
 *   parallel geometric multigrid solver on hierarchically distributed grids.
 *   Computing and visualization in science 16, 4 (2013), 151-164"
 * "Vogel, A., Reiter, S., Rupp, M., Nägel, A., and Wittum, G. UG4 -- a novel
 *   flexible software system for simulating pde based models on high performance
 *   computers. Computing and visualization in science 16, 4 (2013), 165-179"
 * 
 * This program 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.
 */
 
#ifndef __H__UG_smooth_projector
#define __H__UG_smooth_projector
 
#include "refinement_projector.h"
 
namespace ug{
 
 
class SmoothProjector : public RefinementProjector {
public:
  SmoothProjector () :
    m_iterations (10),
    m_changeRate (0.25)
  {}
  
  SmoothProjector (int iterations,
          number changeRate) :
    m_iterations (iterations),
    m_changeRate (changeRate)
  {}
 
  SmoothProjector (SPIGeometry3d geometry,
          int iterations,
          number changeRate) :
    RefinementProjector (geometry),
    m_iterations (iterations),
    m_changeRate (changeRate)
  {}
 
  int iterations () const {return m_iterations;}
  void set_iterations (int iterations)  {m_iterations = iterations;}
 
  number change_rate () const {return m_changeRate;}
  void set_change_rate (number changeRate)  {m_changeRate = changeRate;}
 
  virtual void refinement_begins(const ISubGrid* sg)
  {
    RefinementProjector::refinement_begins(sg);
    m_newVrts.clear();
  }
 
 
  virtual void refinement_ends();
 
  virtual number new_vertex(Vertex* vrt, Edge* parent)
  {
    m_newVrts.push_back(vrt);
    return RefinementProjector::new_vertex(vrt, parent);
  }
 
  virtual number new_vertex(Vertex* vrt, Face* parent)
  {
    m_newVrts.push_back(vrt);
    return RefinementProjector::new_vertex(vrt, parent);
  }
 
  virtual number new_vertex(Vertex* vrt, Volume* parent)
  {
    m_newVrts.push_back(vrt);
    return RefinementProjector::new_vertex(vrt, parent);
  }
 
private:
  friend class boost::serialization::access;
 
  template <class Archive>
  void serialize( Archive& ar, const unsigned int version)
  {
    ar & make_nvp("iterations", m_iterations);
    ar & make_nvp("change rate", m_changeRate);
    UG_EMPTY_BASE_CLASS_SERIALIZATION(SmoothProjector, RefinementProjector);
  }
 
  std::vector<Vertex*> m_newVrts;
  int   m_iterations;
  number  m_changeRate;
};
 
}// end of namespace
 
#endif  //__H__UG_smooth_projector