elementboundarytypes.hh

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// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
// vi: set et ts=4 sw=4 sts=4:
//
// SPDX-FileCopyrightText: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
// SPDX-License-Identifier: GPL-3.0-or-later
//
#ifndef DUMUX_ELEMENT_BOUNDARY_TYPES_HH
#define DUMUX_ELEMENT_BOUNDARY_TYPES_HH
 
#include <cassert>
#include <vector>
 
#include <dune/geometry/referenceelements.hh>
 
namespace Dumux {
 
template<class BTypes>
class ElementIntersectionBoundaryTypes
{
public:
    using BoundaryTypes = BTypes;
 
    template<class Problem, class FVElementGeometry>
    void update(const Problem& problem,
                const typename FVElementGeometry::Element& element,
                const FVElementGeometry& fvGeometry)
    {
        static constexpr int dim = FVElementGeometry::GridGeometry::GridView::dimension;
        using Scalar = typename FVElementGeometry::GridGeometry::GlobalCoordinate::value_type;
        // Resize according to the number of faces (intersections)
        bcTypes_.resize(Dune::referenceElement<Scalar, dim>(element.type()).size(dim-1));
 
        hasDirichlet_ = false;
        hasNeumann_ = false;
 
        for (const auto& intersection : intersections(fvGeometry.gridGeometry().gridView(), element))
        {
            const auto localIdx = intersection.indexInInside();
            bcTypes_[localIdx].reset();
 
            if (intersection.boundary() && !intersection.neighbor())
            {
                bcTypes_[localIdx] = problem.boundaryTypes(fvGeometry, intersection);
                hasDirichlet_ = hasDirichlet_ || bcTypes_[localIdx].hasDirichlet();
                hasNeumann_ = hasNeumann_ || bcTypes_[localIdx].hasNeumann();
            }
        }
    }
 
    bool hasDirichlet() const
    { return hasDirichlet_; }
 
    bool hasNeumann() const
    { return hasNeumann_; }
 
    /*
     * \brief Access operator
     * \return BoundaryTypes
     * \note yields undefined behaviour if the scvf is not on the boundary
     */
    template<class FVElementGeometry>
    const BoundaryTypes& get(const FVElementGeometry& fvGeometry, const typename FVElementGeometry::SubControlVolumeFace& scvf) const
    {
        assert(scvf.boundary());
        const auto localIdx = fvGeometry.intersectionIndex(scvf);
        assert(localIdx < bcTypes_.size());
        return bcTypes_[localIdx];
    }
 
    /*
     * \brief Access operator
     * \return BoundaryTypes
     * \note yields undefined behaviour if the intersection is not on the boundary
     */
    template<class FVElementGeometry>
    const BoundaryTypes& get(const FVElementGeometry&, const typename FVElementGeometry::GridGeometry::GridView::Intersection& intersection) const
    {
        assert(intersection.boundary());
        const auto localIdx = intersection.indexInInside();
        assert(localIdx < bcTypes_.size());
        return bcTypes_[localIdx];
    }
 
private:
    std::vector<BoundaryTypes> bcTypes_;
    bool hasDirichlet_ = false;
    bool hasNeumann_ = false;
};
 
 
} // namespace Dumux
 
#endif