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// -*- 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_GRIDFUNCTIONS_GRIDVIEWENTITYSET_HH
#define DUNE_FUNCTIONS_GRIDFUNCTIONS_GRIDVIEWENTITYSET_HH
#include <memory>
namespace Dune {
namespace Functions {
/**
* \brief An entity set for all entities of given codim in a grid view.
*
* \ingroup FunctionUtility
*
* This implements the \ref Concept::EntitySet concept.
*/
template<class GV, int cd>
class GridViewEntitySet
{
public:
typedef GV GridView;
enum {
codim = cd
};
//! Type of Elements contained in this EntitySet
typedef typename GridView::template Codim<codim>::Entity Element;
//! Type of local coordinates with respect to the Element
typedef typename Element::Geometry::LocalCoordinate LocalCoordinate;
typedef typename Element::Geometry::GlobalCoordinate GlobalCoordinate;
typedef Element value_type;
//! A forward iterator
typedef typename GridView::template Codim<codim>::Iterator const_iterator;
//! Same as const_iterator
typedef const_iterator iterator;
//! Construct GridViewEntitySet for a GridView.
GridViewEntitySet(const GridView& gv) :
gv_(gv)
{}
//! Return true if `e` is contained in the EntitySet.
bool contains(const Element& e) const
{
return gv_.contains(e);
}
//! Return number of Elements visited by an iterator.
size_t size() const
{
return gv_.size(codim);
}
//! Create a begin iterator.
const_iterator begin() const
{
return gv_.template begin<codim>();
}
//! Create an end iterator.
const_iterator end() const
{
return gv_.template end<codim>();
}
//! Return the associated GridView.
const GridView& gridView() const
{
return gv_;
}
private:
GridView gv_;
};
} // end of namespace Dune::Functions
} // end of namespace Dune
#endif // DUNE_FUNCTIONS_GRIDFUNCTIONS_GRIDVIEWENTITYSET_HH
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