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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 Adaptive | ||
| 10 | * \brief A function to mark element for refinement or coarsening | ||
| 11 | */ | ||
| 12 | #ifndef DUMUX_ADAPTIVE_MARKELEMENTS_HH | ||
| 13 | #define DUMUX_ADAPTIVE_MARKELEMENTS_HH | ||
| 14 | |||
| 15 | #include <dune/grid/common/rangegenerators.hh> | ||
| 16 | |||
| 17 | namespace Dumux { | ||
| 18 | |||
| 19 | /*! | ||
| 20 | * \ingroup Adaptive | ||
| 21 | * \brief A function to mark element for refinement or coarsening | ||
| 22 | * \param grid the grid to mark the entities on | ||
| 23 | * \param indicator indicated per element whether to refine, coarsen, do nothing. It has a ()-operator taking an element | ||
| 24 | * \param verbose If verbose output to std::cout is enabled | ||
| 25 | * \return bool whether or not anything has been marked | ||
| 26 | */ | ||
| 27 | template<class Grid, class Indicator> | ||
| 28 | 22 | bool markElements(Grid& grid, const Indicator& indicator, bool verbose = true) | |
| 29 | { | ||
| 30 | // mark elements according to indicator | ||
| 31 | 22 | std::size_t refine = 0; | |
| 32 | 22 | std::size_t coarsen = 0; | |
| 33 |
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121091 | for (const auto& element : elements(grid.leafGridView(), Dune::Partitions::interior)) |
| 34 | { | ||
| 35 |
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121047 | const auto mark = indicator(element); |
| 36 |
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121047 | if (mark > 0) |
| 37 | { | ||
| 38 |
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4926 | grid.mark(1, element); |
| 39 | 4926 | ++refine; | |
| 40 | } | ||
| 41 |
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116121 | else if (mark < 0) |
| 42 | { | ||
| 43 |
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29139 | grid.mark(-1, element); |
| 44 | 29139 | ++coarsen; | |
| 45 | } | ||
| 46 | } | ||
| 47 | |||
| 48 | // abort if nothing in grid is marked | ||
| 49 |
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25 | const std::size_t sumRefine = grid.comm().sum(refine); |
| 50 |
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25 | const std::size_t sumCoarsen = grid.comm().sum(coarsen); |
| 51 | |||
| 52 |
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28 | if (grid.comm().rank() == 0 && verbose) |
| 53 | 22 | std::cout << sumRefine << " cells have been marked to be refined, " | |
| 54 | 44 | << sumCoarsen << " to be coarsened." << std::endl; | |
| 55 | |||
| 56 | // return whether or not anything has been marked | ||
| 57 | 22 | return sumRefine != 0 || sumCoarsen != 0; | |
| 58 | } | ||
| 59 | |||
| 60 | } //end namespace Dumux | ||
| 61 | |||
| 62 | #endif | ||
| 63 |