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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 | 41 | NonconformingFECache() | |
41 | : rtBasis_(std::make_unique<Dune::LocalFiniteElementVirtualImp<RT>>(RT{})) | ||
42 |
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82 | , crBasis_(std::make_unique<Dune::LocalFiniteElementVirtualImp<CR>>(CR{})) |
43 | 41 | {} | |
44 | |||
45 | //! Get local finite element for given GeometryType | ||
46 | 36957652 | const FiniteElementType& get(const Dune::GeometryType& gt) const | |
47 | { | ||
48 |
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36957652 | if (gt.isSimplex()) |
49 | 14282392 | 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 |