subdivision_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_subdivision_projector
#define __H__UG_subdivision_projector
 
#include <algorithm>
#include <vector>
#include "refinement_projector.h"
#include "lib_grid/callbacks/basic_callbacks.h"
#include "lib_grid/callbacks/topology_callbacks.h"
 
namespace ug{
 
 
class SubdivisionProjector : public RefinementProjector {
public:
  SubdivisionProjector () :
    m_cbIsCrease (Grid::edge_traits::callback(ConsiderNone())),
    m_customConcernedElementsCallbackUsed (false)
  {}
  
  SubdivisionProjector (Grid::edge_traits::callback cbIsCrease) :
    m_cbIsCrease (cbIsCrease),
    m_customConcernedElementsCallbackUsed (false)
  {}
 
  SubdivisionProjector (SPIGeometry3d geometry) :
    RefinementProjector (geometry, make_sp(new IsBoundaryOrManifodFace(geometry->grid()))),
    m_cbIsCrease (Grid::edge_traits::callback(ConsiderNone())),
    m_customConcernedElementsCallbackUsed (false)
  {}
 
  SubdivisionProjector (SPIGeometry3d geometry,
              Grid::edge_traits::callback cbIsCrease) :
    RefinementProjector (geometry, make_sp(new IsBoundaryOrManifodFace(geometry->grid()))),
    m_cbIsCrease (cbIsCrease),
    m_customConcernedElementsCallbackUsed (false)
  {}
 
  virtual void set_geometry (SPIGeometry3d geometry)
  {
    RefinementProjector::set_geometry (geometry);
    if(!m_customConcernedElementsCallbackUsed){
      RefinementProjector::set_concerned_elements(
        make_sp(new IsBoundaryOrManifodFace(geometry->grid())));
    }
  }
 
  virtual void set_concerned_elements (SPElementCallback cb)
  {
    RefinementProjector::set_concerned_elements (cb);
    m_customConcernedElementsCallbackUsed = true;
  }
 
  virtual bool refinement_begins_requires_subgrid () const  {return true;}
  
  virtual void refinement_begins(const ISubGrid* sg);
  virtual void refinement_ends();
 
  virtual number new_vertex(Vertex* vrt, Edge* parent);
  // virtual number new_vertex(Vertex* vrt, Face* parent);
  // virtual number new_vertex(Vertex* vrt, Volume* parent);
 
  virtual void set_crease_callback (Grid::edge_traits::callback cbIsCrease)
  {
    m_cbIsCrease = cbIsCrease;
  }
 
protected:
  size_t nbr_crease_edges (Vertex* vrt,
               Grid::edge_traits::secure_container* assEdges = NULL,
               Edge* creaseEdgesOut[2] = NULL);
 
  size_t concerned_nbr_faces (Edge* edge,
                Grid::face_traits::secure_container* assFaces = NULL,
                Face* facesOut[2] = NULL);
 
private:
  friend class boost::serialization::access;
 
  template <class Archive>
  void serialize( Archive& ar, const unsigned int version)
  {
    UG_EMPTY_BASE_CLASS_SERIALIZATION(SubdivisionProjector, RefinementProjector);
  }
 
 
  typedef std::vector<std::pair<Vertex*, vector3> > new_pos_vec_t;
 
  Grid::edge_traits::callback m_cbIsCrease;
  new_pos_vec_t       m_newPositions;
  bool            m_customConcernedElementsCallbackUsed;
};
 
}// end of namespace
 
#endif  //__H__UG_subdivision_projector