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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 Geometry | ||
| 10 | * \brief A function to compute a geometry's diameter, i.e. | ||
| 11 | * the longest distance between points of a geometry | ||
| 12 | */ | ||
| 13 | #ifndef DUMUX_GEOMETRY_DIAMETER_HH | ||
| 14 | #define DUMUX_GEOMETRY_DIAMETER_HH | ||
| 15 | |||
| 16 | #include <algorithm> | ||
| 17 | |||
| 18 | namespace Dumux { | ||
| 19 | |||
| 20 | /*! | ||
| 21 | * \ingroup Geometry | ||
| 22 | * \brief Computes the longest distance between points of a geometry | ||
| 23 | * \note Useful e.g. to compute the maximum cell diameter of a grid | ||
| 24 | */ | ||
| 25 | template<class Geometry> | ||
| 26 | 2891532 | typename Geometry::ctype diameter(const Geometry& geo) | |
| 27 | { | ||
| 28 | using std::max; | ||
| 29 | 2891532 | typename Geometry::ctype h = 0.0; | |
| 30 |
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33014812 | for (std::size_t i = 0; i < geo.corners(); ++i) |
| 31 |
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89636514 | for (std::size_t j = i + 1; j < geo.corners(); ++j) |
| 32 |
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165853591 | h = max(h, (geo.corner(i)-geo.corner(j)).two_norm()); |
| 33 | |||
| 34 | 2891532 | return h; | |
| 35 | } | ||
| 36 | |||
| 37 | } // end namespace Dumux | ||
| 38 | |||
| 39 | #endif | ||
| 40 |