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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-FileCopyrightText: 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 Core | ||
| 10 | * \brief A map from indices to entities using grid entity seeds | ||
| 11 | */ | ||
| 12 | #ifndef DUMUX_ENTITY_INDEX_MAP_HH | ||
| 13 | #define DUMUX_ENTITY_INDEX_MAP_HH | ||
| 14 | |||
| 15 | #include <vector> | ||
| 16 | #include <utility> | ||
| 17 | #include <dune/geometry/dimension.hh> | ||
| 18 | |||
| 19 | namespace Dumux { | ||
| 20 | |||
| 21 | /*! | ||
| 22 | * \ingroup Core | ||
| 23 | * \brief A map from indices to entities using grid entity seeds | ||
| 24 | */ | ||
| 25 | template <class GridView, int codim = 0> | ||
| 26 |
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960 | class EntityMap |
| 27 | { | ||
| 28 | public: | ||
| 29 | using Grid = typename GridView::Traits::Grid; | ||
| 30 | using Entity = typename Grid::template Codim<codim>::Entity; | ||
| 31 | using EntitySeed = typename Grid::template Codim<codim>::EntitySeed; | ||
| 32 | |||
| 33 | //! constructor moving a ready seed list in here | ||
| 34 | EntityMap(const Grid& grid, std::vector<EntitySeed>&& seeds) | ||
| 35 | : grid_(grid) | ||
| 36 | , seeds_(std::move(seeds)) | ||
| 37 | {} | ||
| 38 | |||
| 39 | //! constructor with all entities of codim | ||
| 40 | template<class Mapper> | ||
| 41 | 1317 | EntityMap(const Grid& grid, const Mapper& mapper) | |
| 42 |
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1317 | : grid_(grid) |
| 43 | { | ||
| 44 |
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1317 | update(mapper); |
| 45 | 1317 | } | |
| 46 | |||
| 47 | //! update the map after the grid changed | ||
| 48 | void update(std::vector<EntitySeed>&& seeds) | ||
| 49 | { seeds_.swap(std::move(seeds)); } | ||
| 50 | |||
| 51 | //! update the map after the grid changed | ||
| 52 | template<class Mapper> | ||
| 53 | 1317 | void update(const Mapper& mapper) | |
| 54 | { | ||
| 55 | 1317 | const auto& gv = grid_.leafGridView(); | |
| 56 |
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1317 | seeds_.resize(gv.size(codim)); |
| 57 |
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11964235 | for (const auto& entity : entities(gv, Dune::Codim<codim>())) |
| 58 |
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6544067 | seeds_[mapper.index(entity)] = entity.seed(); |
| 59 | 1317 | } | |
| 60 | |||
| 61 | //! get an element from an index i | ||
| 62 | 893679992 | Entity operator[](std::size_t i) const | |
| 63 |
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893484992 | { return grid_.entity(seeds_[i]); } |
| 64 | |||
| 65 | //! get the size of the map | ||
| 66 | 2842657 | std::size_t size() const | |
| 67 |
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2842657 | { return seeds_.size(); } |
| 68 | |||
| 69 | private: | ||
| 70 | const Grid& grid_; | ||
| 71 | std::vector<EntitySeed> seeds_; | ||
| 72 | }; | ||
| 73 | |||
| 74 | template<class GridView> | ||
| 75 | using ElementMap = EntityMap<GridView, 0>; | ||
| 76 | |||
| 77 | } // end namespace Dumux | ||
| 78 | |||
| 79 | #endif | ||
| 80 |