selector_grid_impl.hpp

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/*
 * Copyright (c) 2010-2015:  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__LIBGRID__SELECTOR_GRID_IMPL__
#define __H__LIBGRID__SELECTOR_GRID_IMPL__
 
#include <cassert>
 
namespace ug
{
 
template <class TElem>
inline int
Selector::get_section_index() const
{
  return geometry_traits<TElem>::CONTAINER_SECTION;
}
 
template <class TElem>
inline void
Selector::clear()
{
  if(m_pGrid){
  //  mark all elements as deselected
    typename geometry_traits<TElem>::iterator iter;
    for(iter = begin<TElem>(); iter != end<TElem>(); ++iter)
      mark_deselected(*iter);
 
  //  clear the section
    const int sInd = get_section_index<TElem>();
    if(sInd < 0)
      section_container<TElem>().clear();
    else
      section_container<TElem>().clear_section(sInd);
  }
}
 
template <class TElem>
inline size_t
Selector::num() const
{
  const int sInd = get_section_index<TElem>();
  if(sInd < 0)
    return section_container<TElem>().num_elements();
  else
    return section_container<TElem>().num_elements(sInd);
}
 
inline size_t
Selector::num() const
{
  return num<Vertex>() + num<Edge>() + num<Face>() + num<Volume>();
}
 
//  empty
inline bool 
Selector::empty() const
{
  return num() == 0;
}
 
template <class TElem>
inline bool 
Selector::empty() const
{
  return num<TElem>() == 0;
}
 
//  begin
template <class TElem>
inline typename geometry_traits<TElem>::iterator
Selector::begin()
{
  const int sInd = get_section_index<TElem>();
  if(sInd < 0)
    return iterator_cast<typename geometry_traits<TElem>::iterator>(
                section_container<TElem>().begin());
  else
    return iterator_cast<typename geometry_traits<TElem>::iterator>(
          section_container<TElem>().section_begin(sInd));
}
 
//  const begin
template <class TElem>
inline typename geometry_traits<TElem>::const_iterator
Selector::begin() const
{
  const int sInd = get_section_index<TElem>();
  if(sInd < 0)
    return iterator_cast<typename geometry_traits<TElem>::const_iterator>(
                section_container<TElem>().begin());
  else
    return iterator_cast<typename geometry_traits<TElem>::const_iterator>(
          section_container<TElem>().section_begin(sInd));
}
 
//  end
template <class TElem>
inline typename geometry_traits<TElem>::iterator
Selector::end()
{
  const int sInd = get_section_index<TElem>();
  if(sInd < 0)
    return iterator_cast<typename geometry_traits<TElem>::iterator>(
                  section_container<TElem>().end());
  else
    return iterator_cast<typename geometry_traits<TElem>::iterator>(
                section_container<TElem>().section_end(sInd));
}
 
//  const end
template <class TElem>
inline typename geometry_traits<TElem>::const_iterator
Selector::end() const
{
  const int sInd = get_section_index<TElem>();
  if(sInd < 0)
    return iterator_cast<typename geometry_traits<TElem>::const_iterator>(
                  section_container<TElem>().end());
  else
    return iterator_cast<typename geometry_traits<TElem>::const_iterator>(
                section_container<TElem>().section_end(sInd));
}
 
template <class TElem>
TElem*
Selector::front()
{
  const int sInd = get_section_index<TElem>();
  return static_cast<TElem*>(section_container<TElem>().front(sInd));
}
 
template <class TElem>
TElem*
Selector::back()
{
  const int sInd = get_section_index<TElem>();
  return static_cast<TElem*>(section_container<TElem>().back(sInd));
}
 
//  for compatibility with MGSelector
 
 
inline size_t Selector::
num_levels() const
{
  return 1;
}
 
inline uint Selector::
num(size_t) const
{
  return (uint)num();
}
 
template <class TElem>
inline size_t Selector::
num(size_t) const
{
  return num<TElem>();
}
 
inline bool Selector::
empty(size_t) const
{
  return empty();
}
 
template <class TElem>
inline bool Selector::
empty(size_t) const
{
  return empty<TElem>();
}
 
template <class TElem>
inline typename geometry_traits<TElem>::iterator
Selector::begin(size_t)
{
  return begin<TElem>();
}
 
//  end
template <class TElem>
inline typename geometry_traits<TElem>::iterator
Selector::end(size_t)
{
  return end<TElem>();
}
 
template <class TElem>
typename Grid::traits<TElem>::SectionContainer&
Selector::
section_container()
{
  return SectionContainerSelector<typename geometry_traits<TElem>::grid_base_object>::
			section_container(m_vertices, m_edges, m_faces, m_volumes);
}
 
 
template <class TElem>
const typename Grid::traits<TElem>::SectionContainer&
Selector::
section_container() const
{
  return SectionContainerSelector<typename geometry_traits<TElem>::grid_base_object>::
			section_container(m_vertices, m_edges, m_faces, m_volumes);
}
 
}// end of namespace
 
#endif