boundarydofs.hh

// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
 
// SPDX-FileCopyrightText: Copyright © DUNE Project contributors, see file AUTHORS.md
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception OR LGPL-3.0-or-later
 
#ifndef DUNE_FUNCTIONS_FUNCTIONSPACEBASES_BOUNDARYDOFS_HH
#define DUNE_FUNCTIONS_FUNCTIONSPACEBASES_BOUNDARYDOFS_HH
 
#include <utility>
 
#include <dune/functions/functionspacebases/subentitydofs.hh>
 
namespace Dune {
namespace Functions {
 
 
 
template<class Basis, class F,
  decltype(std::declval<std::decay_t<F>>()(0, std::declval<typename Basis::LocalView>(),std::declval<typename Basis::GridView::Intersection>()), 0) = 0>
void forEachBoundaryDOF(const Basis& basis, F&& f)
{
  auto localView = basis.localView();
  auto seDOFs = subEntityDOFs(basis);
  const auto& gridView = basis.gridView();
  for(auto&& element : elements(gridView))
    if (element.hasBoundaryIntersections())
    {
      localView.bind(element);
      for(const auto& intersection: intersections(gridView, element))
        if (intersection.boundary())
          for(auto localIndex: seDOFs.bind(localView,intersection))
            f(localIndex, localView, intersection);
    }
}
 
 
 
template<class Basis, class F,
  decltype(std::declval<std::decay_t<F>>()(0, std::declval<typename Basis::LocalView>()),0) = 0>
void forEachBoundaryDOF(const Basis& basis, F&& f)
{
  auto localView = basis.localView();
  auto seDOFs = subEntityDOFs(basis);
  const auto& gridView = basis.gridView();
  for(auto&& element : elements(gridView))
    if (element.hasBoundaryIntersections())
    {
      localView.bind(element);
      for(const auto& intersection: intersections(gridView, element))
        if (intersection.boundary())
          for(auto localIndex: seDOFs.bind(localView,intersection))
            f(localIndex, localView);
    }
}
 
 
 
template<class Basis, class F,
  decltype(std::declval<std::decay_t<F>>()(std::declval<typename Basis::MultiIndex>()),0) = 0>
void forEachBoundaryDOF(const Basis& basis, F&& f)
{
  auto localView = basis.localView();
  auto seDOFs = subEntityDOFs(basis);
  const auto& gridView = basis.gridView();
  for(auto&& element : elements(gridView))
    if (element.hasBoundaryIntersections())
    {
      localView.bind(element);
      for(const auto& intersection: intersections(gridView, element))
        if (intersection.boundary())
          for(auto localIndex: seDOFs.bind(localView,intersection))
            f(localView.index(localIndex));
    }
}
 
 
 
} // namespace Functions
} // namespace Dune
 
#endif // DUNE_FUNCTIONS_FUNCTIONSPACEBASES_BOUNDARYDOFS_HH