fegridgeometry.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_DISCRETIZATION_FE_GRID_GEOMETRY_HH
#define DUMUX_DISCRETIZATION_FE_GRID_GEOMETRY_HH
 
#include <ranges>
#include <span>
#include <unordered_map>
 
#include <dumux/common/indextraits.hh>
#include <dumux/common/defaultmappertraits.hh>
 
#include <dumux/discretization/method.hh>
#include <dumux/discretization/basegridgeometry.hh>
#include <dumux/discretization/checkoverlapsize.hh>
#include <dumux/discretization/extrusion.hh>
#include <dumux/discretization/fem/feelementgeometry.hh>
 
namespace Dumux {

template<class FEBasis, class MapperTraits = DefaultMapperTraits<typename FEBasis::GridView>>
struct DefaultFEGridGeometryTraits : public MapperTraits
{
    template<class GridGeometry>
    using LocalView = FEElementGeometry<GridGeometry>;
};

template<class FEB, class Traits = DefaultFEGridGeometryTraits<FEB>>
class FEGridGeometry
: public BaseGridGeometry< typename FEB::GridView, Traits >
{
    using ThisType = FEGridGeometry<FEB, Traits>;
    using ParentType = BaseGridGeometry<typename FEB::GridView, Traits>;
 
    using GridIndexType = typename IndexTraits<typename FEB::GridView>::GridIndex;
    using LocalIndexType = typename IndexTraits<typename FEB::GridView>::LocalIndex;
 
public:
    using DiscretizationMethod = DiscretizationMethods::FEM;
    static constexpr DiscretizationMethod discMethod{};

    using GridView = typename FEB::GridView;
    using Extrusion = Extrusion_t<Traits>;
    using FEBasis = FEB;
    using LocalView = typename Traits::template LocalView<ThisType>;

    FEGridGeometry(std::shared_ptr<FEBasis> feBasis)
    : ParentType(feBasis->gridView())
    , feBasis_(feBasis)
    {
        // Check if the overlap size is what we expect
        if (!CheckOverlapSize<DiscretizationMethod>::isValid(*feBasis))
            DUNE_THROW(Dune::InvalidStateException, "The finite element discretization method only works with zero overlap for parallel computations. "
                                                     << " Set the parameter \"Grid.Overlap\" in the input file.");
    }

    auto numDofs() const
    { return feBasis_->size(); }

    const FEBasis& feBasis() const
    { return *feBasis_; }

    bool dofOnPeriodicBoundary(GridIndexType dofIdx) const
    { DUNE_THROW(Dune::NotImplemented, "Periodic BC support for FEM schemes"); }

    [[deprecated("Will be removed after release 3.11. Use periodicallyMappedDofs, returning a range of dofs")]]
    GridIndexType periodicallyMappedDof(GridIndexType dofIdx) const
    { DUNE_THROW(Dune::NotImplemented, "Periodic BC support for FEM schemes"); }

    std::span<const GridIndexType> periodicallyMappedDofs(GridIndexType dofIdx) const
    { DUNE_THROW(Dune::NotImplemented, "Periodic BC support for FEM schemes"); }
 
private:
    std::shared_ptr<FEBasis> feBasis_;
};
 
} // end namespace Dumux
 
#endif