Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Loaders/BasicFetchingItemsSorter.cpp @ 1870:3889ae96d2e9
added copyright UCLouvain
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 11 Jan 2022 11:04:09 +0100 |
| parents | 9ac2a65d4172 |
| children | 7053b8a0aaec |
| rev | line source |
|---|---|
| 708 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
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5 * Copyright (C) 2017-2021 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2021 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 708 | 7 * |
| 8 * This program is free software: you can redistribute it and/or | |
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9 * modify it under the terms of the GNU Lesser General Public License |
| 708 | 10 * as published by the Free Software Foundation, either version 3 of |
| 11 * the License, or (at your option) any later version. | |
| 12 * | |
| 13 * This program is distributed in the hope that it will be useful, but | |
| 14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
|
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 * Lesser General Public License for more details. |
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17 * |
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18 * You should have received a copy of the GNU Lesser General Public |
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19 * License along with this program. If not, see |
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20 * <http://www.gnu.org/licenses/>. |
| 708 | 21 **/ |
| 22 | |
| 23 | |
| 24 #include "BasicFetchingItemsSorter.h" | |
| 25 | |
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26 #include <OrthancException.h> |
| 708 | 27 |
| 1628 | 28 #include <algorithm> |
| 1624 | 29 #include <cassert> |
| 30 | |
| 708 | 31 namespace OrthancStone |
| 32 { | |
| 33 BasicFetchingItemsSorter::BasicFetchingItemsSorter(unsigned int itemsCount) : | |
| 34 itemsCount_(itemsCount) | |
| 35 { | |
| 36 if (itemsCount == 0) | |
| 37 { | |
| 38 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 39 } | |
| 40 } | |
| 41 | |
| 42 | |
| 43 void BasicFetchingItemsSorter::Sort(std::vector<unsigned int>& target, | |
| 44 unsigned int current) | |
| 45 { | |
| 46 if (current >= itemsCount_) | |
| 47 { | |
| 48 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 49 } | |
| 50 | |
| 51 target.clear(); | |
| 52 target.reserve(itemsCount_); | |
| 53 target.push_back(current); | |
| 54 | |
| 55 const unsigned int countBelow = current; | |
| 56 const unsigned int countAbove = (itemsCount_ - 1) - current; | |
| 57 const unsigned int n = std::min(countBelow, countAbove); | |
| 58 | |
| 59 for (unsigned int i = 1; i <= n; i++) | |
| 60 { | |
| 61 assert(current + i < itemsCount_ && | |
| 62 current >= i); | |
| 63 target.push_back(current + i); | |
| 64 target.push_back(current - i); | |
| 65 } | |
| 66 | |
| 67 for (unsigned int i = current - n; i > 0; i--) | |
| 68 { | |
| 69 target.push_back(i - 1); | |
| 70 } | |
| 71 | |
| 72 for (unsigned int i = current + n + 1; i < itemsCount_; i++) | |
| 73 { | |
| 74 target.push_back(i); | |
| 75 } | |
| 76 | |
| 77 assert(target.size() == itemsCount_); | |
| 78 } | |
| 79 } |