element_list_traits.h

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/*
 * Copyright (c) 2013-2015:  G-CSC, Goethe University Frankfurt
 * Author: Dmitry Logashenko
 * 
 * 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.
 */
 
/*
 * Classes for computing integral properties of geometric objects types in lists.
 */
#ifndef __H__UG__LIB_DISC__REFERENCE_ELEMENT__ELEMENT_LIST_TRAITS__
#define __H__UG__LIB_DISC__REFERENCE_ELEMENT__ELEMENT_LIST_TRAITS__
 
// further lib_disc headers
#include "lib_disc/reference_element/reference_element.h"
 
// Boost-C++ headers
#include <boost/mpl/transform_view.hpp>
#include <boost/mpl/fold.hpp>
#include <boost/mpl/min_max.hpp>
 
namespace ug{
 
 
template <typename ElemList>
class element_list_traits
{
  struct mfc_num_corners_of_elem
  {
    template <typename TElem> class apply
    {
      typedef typename reference_element_traits<TElem>::reference_element_type ref_elem_type;
      public: typedef boost::mpl::int_<ref_elem_type::numCorners> type; 
    };
  };
  
  struct mfc_num_edges_of_elem
  {
    template <typename TElem> class apply
    {
      typedef typename reference_element_traits<TElem>::reference_element_type ref_elem_type;
      public: typedef boost::mpl::int_<ref_elem_type::numEdges> type; 
    };
  };
  
  struct mfc_num_faces_of_elem
  {
    template <typename TElem> class apply
    {
      typedef typename reference_element_traits<TElem>::reference_element_type ref_elem_type;
      public: typedef boost::mpl::int_<ref_elem_type::numFaces> type; 
    };
  };
  
  struct mfc_num_volumes_of_elem
  {
    template <typename TElem> class apply
    {
      typedef typename reference_element_traits<TElem>::reference_element_type ref_elem_type;
      public: typedef boost::mpl::int_<ref_elem_type::numVolumes> type; 
    };
  };
  
  struct mfc_num_sides_of_elem
  {
    template <typename TElem> class apply
    {
      typedef typename reference_element_traits<TElem>::reference_element_type ref_elem_type;
      public: typedef boost::mpl::int_<ref_elem_type::numSides> type; 
    };
  };
  
public:
  
  static const int maxCorners
    = boost::mpl::fold
      <
        boost::mpl::transform_view<ElemList, mfc_num_corners_of_elem>,
        boost::mpl::int_<0>,
        boost::mpl::max<boost::mpl::_1,boost::mpl::_2>
      >::type::value;
  
  static const int maxEdges
    = boost::mpl::fold
      <
        boost::mpl::transform_view<ElemList, mfc_num_edges_of_elem>,
        boost::mpl::int_<0>,
        boost::mpl::max<boost::mpl::_1,boost::mpl::_2>
      >::type::value;
  
  static const int maxFaces
    = boost::mpl::fold
      <
        boost::mpl::transform_view<ElemList, mfc_num_faces_of_elem>,
        boost::mpl::int_<0>,
        boost::mpl::max<boost::mpl::_1,boost::mpl::_2>
      >::type::value;
  
  static const int maxVolumes
    = boost::mpl::fold
      <
        boost::mpl::transform_view<ElemList, mfc_num_volumes_of_elem>,
        boost::mpl::int_<0>,
        boost::mpl::max<boost::mpl::_1,boost::mpl::_2>
      >::type::value;
  
  static const int maxSides
    = boost::mpl::fold
      <
        boost::mpl::transform_view<ElemList, mfc_num_sides_of_elem>,
        boost::mpl::int_<0>,
        boost::mpl::max<boost::mpl::_1,boost::mpl::_2>
      >::type::value;
};
 
} // end namespace ug
 
#endif // __H__UG__LIB_DISC__REFERENCE_ELEMENT__ELEMENT_LIST_TRAITS__
 
/* End of File */