quadrature_provider.h

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/*
 * Copyright (c) 2013-2015:  G-CSC, Goethe University Frankfurt
 * Author: Andreas Vogel
 * 
 * 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__LIB_DISC__QUADRATURE_PROVIDER__
#define __H__UG__LIB_DISC__QUADRATURE_PROVIDER__
 
#include "lib_grid/grid/grid_base_objects.h"
#include "quadrature.h"
 
 
enum QuadType {
  BEST = 0,
  GAUSS,
  GAUSS_LEGENDRE,
  NEWTON_COTES,
  NUM_QUADRATURE_TYPES // always last
};
 
namespace ug{
 
 
template <int TDim>
class QuadratureRuleProvider
{
  public:
    static const int dim = TDim;
 
  private:
    QuadratureRuleProvider();
 
  //  disallow copy
    QuadratureRuleProvider(const QuadratureRuleProvider&);
    QuadratureRuleProvider& operator=(const QuadratureRuleProvider&);
 
    static QuadratureRuleProvider<dim>& instance()
    {
      static QuadratureRuleProvider<dim> inst;
      return inst;
    }
 
  public:
    ~QuadratureRuleProvider();
 
  protected:
    static std::vector<const QuadratureRule<TDim>*> m_vRule[NUM_QUADRATURE_TYPES][NUM_REFERENCE_OBJECTS];
 
    static const QuadratureRule<TDim>&
    get_quad_rule(ReferenceObjectID roid, size_t order, QuadType type);
 
    static void create_rule(ReferenceObjectID roid, size_t order, QuadType type);
 
    static const QuadratureRule<TDim>* create_gauss_rule(ReferenceObjectID roid, size_t order);
    static const QuadratureRule<TDim>* create_newton_cotes_rule(ReferenceObjectID roid, size_t order);
    static const QuadratureRule<TDim>* create_gauss_legendre_rule(ReferenceObjectID roid, size_t order);
 
  public:
 
    template <typename TRefElem>
    static const QuadratureRule<TDim>&
    get(size_t order, QuadType type = BEST);
 
 
    static const QuadratureRule<TDim>&
    get(ReferenceObjectID roid, size_t order, QuadType type = BEST);
};
 
// Init static member
template <int dim>
std::vector<const QuadratureRule<dim>*> QuadratureRuleProvider<dim>::m_vRule[NUM_QUADRATURE_TYPES][NUM_REFERENCE_OBJECTS];
 
std::ostream& operator<<(std::ostream& out, const QuadType& v);
 
QuadType GetQuadratureType(const std::string& name);
 
 
} // namespace ug
 
#include "quadrature_provider_impl.h"
 
#endif /* __H__UG__LIB_DISC__QUADRATURE_PROVIDER__ */