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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 | /*! | ||
| 9 | * \file | ||
| 10 | * \ingroup FacetCoupling | ||
| 11 | * \copydoc Dumux::EnrichedVertexDofMapper | ||
| 12 | */ | ||
| 13 | #ifndef DUMUX_ENRICHED_VERTEX_DOF_MAPPER_HH | ||
| 14 | #define DUMUX_ENRICHED_VERTEX_DOF_MAPPER_HH | ||
| 15 | |||
| 16 | #include <vector> | ||
| 17 | |||
| 18 | #include <dune/common/exceptions.hh> | ||
| 19 | #include <dune/common/timer.hh> | ||
| 20 | #include <dune/grid/common/mcmgmapper.hh> | ||
| 21 | |||
| 22 | #include "enrichmenthelper.hh" | ||
| 23 | |||
| 24 | namespace Dumux { | ||
| 25 | |||
| 26 | /*! | ||
| 27 | * \ingroup FacetCoupling | ||
| 28 | * \brief An indicator class used to mark vertices for enrichment. This | ||
| 29 | * implementation marks all vertices of a given grid of codimension | ||
| 30 | * one for enrichment, except those that are connected to inmersed | ||
| 31 | * boundaries. | ||
| 32 | */ | ||
| 33 | class EnrichmentIndicator | ||
| 34 | { | ||
| 35 | |||
| 36 | public: | ||
| 37 | /*! | ||
| 38 | * \brief Function that marks vertices for enrichment. This implementation | ||
| 39 | * works on the basis of a facet-conforming grid of codimension one | ||
| 40 | * which is used to determine the vertices that should be enriched. | ||
| 41 | * Effectively, all vertices that lie on the given (d-1)-dimensional | ||
| 42 | * grid are marked, except those that are connected to inmersed boundaries. | ||
| 43 | * | ||
| 44 | * \param vertexMarkers Stores for each vertex if it should be enriched | ||
| 45 | * \param gridView The d-dimensional grid for which vertices should be enriched | ||
| 46 | * \param vertexMapper Mapper that maps to the vertex indices of the given grid view | ||
| 47 | * \param codimOneGridView The view on the (d-1)-dimensional facet-conforming grid | ||
| 48 | * \param codimOneGridAdapter Adapter class that allows access to information on the d- | ||
| 49 | * dimensional grid for entities of the (d-1)-dimensional grid | ||
| 50 | */ | ||
| 51 | template< class GridView, | ||
| 52 | class VertexMapper, | ||
| 53 | class CodimOneGridView, | ||
| 54 | class CodimOneGridAdapter > | ||
| 55 | 28 | static void markVerticesForEnrichment(std::vector<bool>& vertexMarkers, | |
| 56 | const GridView& gridView, | ||
| 57 | const VertexMapper& vertexMapper, | ||
| 58 | const CodimOneGridView& codimOneGridView, | ||
| 59 | const CodimOneGridAdapter& codimOneGridAdapter) | ||
| 60 | { | ||
| 61 | static constexpr int dim = GridView::dimension; | ||
| 62 | static_assert(CodimOneGridView::dimension == dim-1, "Grid dimension mismatch"); | ||
| 63 | |||
| 64 | // reset the markers | ||
| 65 | 28 | vertexMarkers.assign(gridView.size(dim), false); | |
| 66 | |||
| 67 | // first find all bulk grid vertices on the boundary | ||
| 68 |
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56 | std::vector<bool> isOnBoundary(gridView.size(dim), false); |
| 69 |
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112626 | for (const auto& e : elements(gridView)) |
| 70 | { | ||
| 71 |
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56299 | const auto refElem = referenceElement(e); |
| 72 |
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600381 | for (const auto& is : intersections(gridView, e)) |
| 73 |
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217020 | if (is.boundary()) |
| 74 |
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19968 | for (int i = 0; i < is.geometry().corners(); ++i) |
| 75 |
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14128 | isOnBoundary[ vertexMapper.subIndex( e, |
| 76 | refElem.subEntity(is.indexInInside(), 1, i, dim), | ||
| 77 | 26816 | dim ) ] = true; | |
| 78 | } | ||
| 79 | |||
| 80 | // mark all vertices on the lower-dimensional grid to be enriched (except immersed boundaries) | ||
| 81 |
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81 | std::vector<typename GridView::IndexSet::IndexType> vertexIndicesStorage; |
| 82 |
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1112 | for (const auto& codimOneElement : elements(codimOneGridView)) |
| 83 | { | ||
| 84 | // if a codimension one element has 2 or more embedments, we need to enrich | ||
| 85 |
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1084 | if (codimOneGridAdapter.numEmbedments(codimOneElement) >= 2) |
| 86 | { | ||
| 87 |
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6760 | for (int i = 0; i < codimOneElement.subEntities(dim-1); ++i) |
| 88 |
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4688 | vertexMarkers[ codimOneGridAdapter.bulkGridVertexIndex(codimOneElement.template subEntity<dim-1>(i)) ] = true; |
| 89 | |||
| 90 | // however, we have to exclude immersed boundaries | ||
| 91 |
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1036 | const auto refElem = referenceElement(codimOneElement); |
| 92 |
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7828 | for (const auto& intersection : intersections(codimOneGridView, codimOneElement)) |
| 93 | { | ||
| 94 | // skip if intersection is not on boundary | ||
| 95 |
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4976 | if (!intersection.boundary()) |
| 96 | continue; | ||
| 97 | |||
| 98 | // obtain all bulk grid indices of the lower-dimensional intersection corners | ||
| 99 |
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160 | const auto numCorners = intersection.geometry().corners(); |
| 100 |
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160 | vertexIndicesStorage.resize(numCorners); |
| 101 |
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432 | for (int i = 0; i < numCorners; ++i) |
| 102 | { | ||
| 103 |
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272 | const auto vIdxLocal = refElem.subEntity(intersection.indexInInside(), 1, i, dim-1); |
| 104 |
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272 | vertexIndicesStorage[i] = codimOneGridAdapter.bulkGridVertexIndex( codimOneElement.template subEntity<dim-1>(vIdxLocal) ); |
| 105 | } | ||
| 106 | |||
| 107 | // if any of the vertices is on an immersed boundary, we must not enrich any of them | ||
| 108 |
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732 | if (std::any_of(vertexIndicesStorage.begin(), vertexIndicesStorage.end(), [&isOnBoundary] (auto idx) { return !isOnBoundary[idx]; })) |
| 109 | 1122 | std::for_each(vertexIndicesStorage.begin(), vertexIndicesStorage.end(), [&vertexMarkers] (auto idx) { vertexMarkers[idx] = false; }); | |
| 110 | } | ||
| 111 | } | ||
| 112 | } | ||
| 113 | 28 | } | |
| 114 | }; | ||
| 115 | |||
| 116 | /*! | ||
| 117 | * \ingroup FacetCoupling | ||
| 118 | * \brief A vertex mapper that allows for enrichment of nodes. Indication on where to | ||
| 119 | * enrich the nodes is done on the basis of a grid of codimension one living | ||
| 120 | * on the facets of the bulk grid. | ||
| 121 | * | ||
| 122 | * \tparam GV The Dune::GridView type | ||
| 123 | */ | ||
| 124 | template<class GV> | ||
| 125 | class EnrichedVertexDofMapper | ||
| 126 | { | ||
| 127 | static constexpr int dim = GV::dimension; | ||
| 128 | static_assert(dim > 1, "Vertex dof enrichment mapper currently only works for dim > 1!"); | ||
| 129 | |||
| 130 | using GIType = typename GV::IndexSet::IndexType; | ||
| 131 | using Vertex = typename GV::template Codim<dim>::Entity; | ||
| 132 | using Element = typename GV::template Codim<0>::Entity; | ||
| 133 | using MCMGMapper = Dune::MultipleCodimMultipleGeomTypeMapper<GV>; | ||
| 134 | |||
| 135 | public: | ||
| 136 | //! export the underlying grid view type | ||
| 137 | using GridView = GV; | ||
| 138 | //! export the grid index type | ||
| 139 | using GridIndexType = GIType; | ||
| 140 | |||
| 141 | //! the constructor | ||
| 142 | 28 | EnrichedVertexDofMapper(const GV& gridView) | |
| 143 | : gridView_(gridView) | ||
| 144 | , elementMapper_(gridView, Dune::mcmgElementLayout()) | ||
| 145 |
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196 | , vertexMapper_(gridView, Dune::mcmgVertexLayout()) |
| 146 | { | ||
| 147 |
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28 | initialize_(); |
| 148 | 28 | } | |
| 149 | |||
| 150 | //! constructor taking a layout as additional argument (for compatibility) | ||
| 151 | 26 | EnrichedVertexDofMapper(const GV& gridView, Dune::MCMGLayout layout) | |
| 152 | 26 | : EnrichedVertexDofMapper(gridView) | |
| 153 | { | ||
| 154 |
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52 | if ( !( static_cast<bool>(layout(Dune::GeometryTypes::vertex, dim)) ) ) |
| 155 | ✗ | DUNE_THROW(Dune::InvalidStateException, "Vertex mapper only makes sense for vertex layout!"); | |
| 156 | 26 | } | |
| 157 | |||
| 158 | //! map nodal subentity of codim 0 entity to the grid dof | ||
| 159 | 20306633 | GridIndexType subIndex(const Element& e, unsigned int i, unsigned int codim) const | |
| 160 | { | ||
| 161 |
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20306633 | assert(codim == dim && "Only element corners can be mapped by this mapper"); |
| 162 | 20306633 | return indexMap_[elementMapper_.index(e)][i]; | |
| 163 | } | ||
| 164 | |||
| 165 | //! map nodal subentity of codim 0 entity to the grid vertex index | ||
| 166 | GridIndexType vertexIndex(const Element& e, unsigned int i, unsigned int codim) const | ||
| 167 | { | ||
| 168 | assert(codim == dim && "Only element corners can be mapped by this mapper"); | ||
| 169 |
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427116 | return vertexMapper_.subIndex(e, i, codim); |
| 170 | } | ||
| 171 | |||
| 172 | //! map nodal entity to the grid vertex index | ||
| 173 | GridIndexType vertexIndex(const Vertex& v) const | ||
| 174 | { | ||
| 175 | assert(Vertex::Geometry::mydimension == 0 && "Only vertices can be mapped by this mapper"); | ||
| 176 |
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7828 | return vertexMapper_.index(v); |
| 177 | } | ||
| 178 | |||
| 179 | //! map vertex to the grid dof index | ||
| 180 | //! \note This is only valid if there are no enriched vertex dofs! | ||
| 181 | //! We therefore ask this in every call. This means quite some overhead, but | ||
| 182 | //! this mapper is not designed optimally for the case of no enriched nodes. | ||
| 183 | template< class EntityType > | ||
| 184 | 2052 | GridIndexType index(const EntityType& e) const | |
| 185 | { | ||
| 186 |
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2052 | if (hasEnrichedVertices_) |
| 187 | ✗ | DUNE_THROW(Dune::InvalidStateException, "Index map contains enriched vertex dofs. Direct mapping from vertex to index not possible."); | |
| 188 | |||
| 189 | ✗ | assert(EntityType::Geometry::mydimension == 0 && "Only vertices can be mapped by this mapper"); | |
| 190 | 2052 | return vertexMapper_.index(e); | |
| 191 | } | ||
| 192 | |||
| 193 | //! returns the number of dofs managed by this mapper | ||
| 194 | ✗ | std::size_t size() const | |
| 195 | ✗ | { return size_; } | |
| 196 | |||
| 197 | //! returns true if a vertex dof had been enriched | ||
| 198 | 2852 | bool isEnriched(const Vertex& v) | |
| 199 | 2852 | { return isEnriched_[ vertexMapper_.index(v) ]; } | |
| 200 | |||
| 201 | //! the update here simply updates the non-enriched map | ||
| 202 | //! enrichment has to be done afterwards! | ||
| 203 | void update(const GV& gridView) | ||
| 204 | { | ||
| 205 | 24 | gridView_ = gridView; | |
| 206 | 24 | initialize_(); | |
| 207 | } | ||
| 208 | |||
| 209 | void update(GV&& gridView) | ||
| 210 | { | ||
| 211 | gridView_ = std::move(gridView); | ||
| 212 | initialize_(); | ||
| 213 | } | ||
| 214 | |||
| 215 | /*! | ||
| 216 | * \brief Enriches the dof map subject to a (dim-1)-dimensional grid. | ||
| 217 | * \note This assumes conforming grids! | ||
| 218 | * | ||
| 219 | * \param codimOneGridView The grid view of a (dim-1)-dimensional grid conforming | ||
| 220 | * with the facets of the grid view passed to the constructor, | ||
| 221 | * indicating on which facets nodal dofs should be enriched. | ||
| 222 | * \param codimOneGridAdapter Adapter class that allows access to information on the d- | ||
| 223 | * dimensional grid for entities of the (d-1)-dimensional grid | ||
| 224 | * \param verbose Enable/disable terminal output of the time necessary for enrichment | ||
| 225 | */ | ||
| 226 | template<class CodimOneGridView, class CodimOneGridAdapter> | ||
| 227 | 28 | void enrich(const CodimOneGridView& codimOneGridView, | |
| 228 | const CodimOneGridAdapter& codimOneGridAdapter, | ||
| 229 | bool verbose = false) | ||
| 230 | { | ||
| 231 | static const int codimOneDim = CodimOneGridView::dimension; | ||
| 232 | static_assert(codimOneDim == dim-1, "Grid dimension mismatch!"); | ||
| 233 | static_assert(codimOneDim == 2 || codimOneDim == 1, "Inadmissible codimension one grid dimension"); | ||
| 234 | static_assert(int(CodimOneGridView::dimensionworld) == int(GV::dimensionworld), "Grid world dimension mismatch"); | ||
| 235 | |||
| 236 | // keep track of time | ||
| 237 | 28 | Dune::Timer watch; | |
| 238 | |||
| 239 | // mark vertices for enrichment using the indicator | ||
| 240 | 28 | EnrichmentIndicator::markVerticesForEnrichment(isEnriched_, gridView_, vertexMapper_, codimOneGridView, codimOneGridAdapter); | |
| 241 | |||
| 242 | // let the helper class do the enrichment of the index map | ||
| 243 | 56 | size_ = VertexEnrichmentHelper< GridView, CodimOneGridView >::enrich(indexMap_, | |
| 244 | isEnriched_, | ||
| 245 | gridView_, | ||
| 246 | vertexMapper_, | ||
| 247 | 28 | elementMapper_, | |
| 248 | codimOneGridView, | ||
| 249 | codimOneGridAdapter); | ||
| 250 | |||
| 251 | // check if new index map contains enriched dofs | ||
| 252 | 84 | hasEnrichedVertices_ = std::any_of(isEnriched_.begin(), isEnriched_.end(), [] (bool isEnriched) { return isEnriched; }); | |
| 253 | |||
| 254 |
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28 | if (verbose) |
| 255 | 12 | std::cout << "Vertex dof enrichment took " << watch.elapsed() << " seconds." << std::endl; | |
| 256 | 28 | } | |
| 257 | |||
| 258 | private: | ||
| 259 | |||
| 260 | //! initializes the mapper on the basis of the standard Dune mcmgmapper | ||
| 261 | 54 | void initialize_() | |
| 262 | { | ||
| 263 | 54 | size_ = gridView_.size(dim); | |
| 264 | 54 | hasEnrichedVertices_ = false; | |
| 265 | 54 | indexMap_.resize(gridView_.size(0)); | |
| 266 | 54 | isEnriched_.resize(gridView_.size(dim), false); | |
| 267 |
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332915 | for (const auto& e : elements(gridView_)) |
| 268 | { | ||
| 269 |
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112793 | const auto numCorners = e.geometry().corners(); |
| 270 |
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111811 | const auto eIdxGlobal = elementMapper_.index(e); |
| 271 |
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223622 | indexMap_[eIdxGlobal].resize(numCorners); |
| 272 |
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541687 | for (unsigned int i = 0; i < numCorners; ++i) |
| 273 |
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429876 | indexMap_[eIdxGlobal][i] = vertexMapper_.subIndex(e, i, dim); |
| 274 | } | ||
| 275 | 54 | } | |
| 276 | |||
| 277 | // data members | ||
| 278 | std::size_t size_; //! number of dofs mapped to by this mapper | ||
| 279 | GV gridView_; //! the grid view | ||
| 280 | MCMGMapper elementMapper_; //! unmodified element mapper | ||
| 281 | MCMGMapper vertexMapper_; //! unmodified vertex mapper | ||
| 282 | bool hasEnrichedVertices_; //! keeps track of if vertices are enriched | ||
| 283 | std::vector<bool> isEnriched_; //! keeps track which vertices are enriched | ||
| 284 | std::vector< std::vector<GIType> > indexMap_; //! contains the new dof indices | ||
| 285 | }; | ||
| 286 | |||
| 287 | } // end namespace Dumux | ||
| 288 | |||
| 289 | #endif | ||
| 290 |