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|---|---|---|---|
| 1 | // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- | ||
| 2 | // vi: set et ts=4 sw=4 sts=4: | ||
| 3 | // | ||
| 4 | // SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder | ||
| 5 | // SPDX-License-Identifier: GPL-3.0-or-later | ||
| 6 | // | ||
| 7 | /*! | ||
| 8 | * \file | ||
| 9 | * \ingroup Discretization | ||
| 10 | * \brief A finite element cache for the non-conforming FE spaces RT and CR | ||
| 11 | */ | ||
| 12 | #ifndef DUMUX_DISCRETIZATION_NONCONFORMING_FECACHE_HH | ||
| 13 | #define DUMUX_DISCRETIZATION_NONCONFORMING_FECACHE_HH | ||
| 14 | |||
| 15 | #include <memory> | ||
| 16 | |||
| 17 | #include <dune/common/exceptions.hh> | ||
| 18 | #include <dune/geometry/type.hh> | ||
| 19 | |||
| 20 | #include <dune/localfunctions/crouzeixraviart.hh> | ||
| 21 | #include <dune/localfunctions/rannacherturek.hh> | ||
| 22 | #include <dune/localfunctions/common/virtualinterface.hh> | ||
| 23 | #include <dune/localfunctions/common/virtualwrappers.hh> | ||
| 24 | |||
| 25 | namespace Dumux { | ||
| 26 | |||
| 27 | template< class CoordScalar, class Scalar, unsigned int dim> | ||
| 28 | class NonconformingFECache | ||
| 29 | { | ||
| 30 | static_assert(dim == 2 || dim == 3, "Non-conforming FE spaces only implemented for 2D and 3D grids"); | ||
| 31 | |||
| 32 | // These are so-called non-conforming finite element spaces | ||
| 33 | // the local basis is only continuous at given points on the faces | ||
| 34 | using RT = Dune::RannacherTurekLocalFiniteElement<CoordScalar, Scalar, dim>; | ||
| 35 | using CR = Dune::CrouzeixRaviartLocalFiniteElement<CoordScalar, Scalar, dim>; | ||
| 36 | |||
| 37 | public: | ||
| 38 | using FiniteElementType = Dune::LocalFiniteElementVirtualInterface<typename RT::Traits::LocalBasisType::Traits>; | ||
| 39 | |||
| 40 | 42 | NonconformingFECache() | |
| 41 | : rtBasis_(std::make_unique<Dune::LocalFiniteElementVirtualImp<RT>>(RT{})) | ||
| 42 |
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84 | , crBasis_(std::make_unique<Dune::LocalFiniteElementVirtualImp<CR>>(CR{})) |
| 43 | 42 | {} | |
| 44 | |||
| 45 | //! Get local finite element for given GeometryType | ||
| 46 | 38433318 | const FiniteElementType& get(const Dune::GeometryType& gt) const | |
| 47 | { | ||
| 48 |
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38433318 | if (gt.isSimplex()) |
| 49 | 17233724 | return *crBasis_; | |
| 50 |
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29816456 | else if (gt.isCube()) |
| 51 | 59632912 | return *rtBasis_; | |
| 52 | else | ||
| 53 | ✗ | DUNE_THROW(Dune::NotImplemented, | |
| 54 | "Non-conforming local finite element for geometry type " << gt | ||
| 55 | ); | ||
| 56 | } | ||
| 57 | |||
| 58 | private: | ||
| 59 | std::unique_ptr<FiniteElementType> rtBasis_; | ||
| 60 | std::unique_ptr<FiniteElementType> crBasis_; | ||
| 61 | }; | ||
| 62 | |||
| 63 | } // end namespace Dumux | ||
| 64 | |||
| 65 | #endif | ||
| 66 |