annotate OrthancStone/Sources/Loaders/BasicFetchingItemsSorter.cpp @ 2034:4b24b7533346 deep-learning

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 27 Jan 2023 15:43:24 +0100
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
1871
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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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
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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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/>.
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21 **/
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22
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23
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24 #include "BasicFetchingItemsSorter.h"
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25
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26 #include <OrthancException.h>
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28 #include <algorithm>
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29 #include <cassert>
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30
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31 namespace OrthancStone
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32 {
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33 BasicFetchingItemsSorter::BasicFetchingItemsSorter(unsigned int itemsCount) :
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34 itemsCount_(itemsCount)
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35 {
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36 if (itemsCount == 0)
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37 {
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38 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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39 }
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40 }
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41
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43 void BasicFetchingItemsSorter::Sort(std::vector<unsigned int>& target,
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44 unsigned int current)
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45 {
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46 if (current >= itemsCount_)
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47 {
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48 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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49 }
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50
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51 target.clear();
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52 target.reserve(itemsCount_);
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53 target.push_back(current);
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54
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55 const unsigned int countBelow = current;
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56 const unsigned int countAbove = (itemsCount_ - 1) - current;
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57 const unsigned int n = std::min(countBelow, countAbove);
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58
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59 for (unsigned int i = 1; i <= n; i++)
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60 {
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61 assert(current + i < itemsCount_ &&
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62 current >= i);
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63 target.push_back(current + i);
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64 target.push_back(current - i);
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65 }
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66
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67 for (unsigned int i = current - n; i > 0; i--)
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68 {
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69 target.push_back(i - 1);
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70 }
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71
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72 for (unsigned int i = current + n + 1; i < itemsCount_; i++)
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73 {
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74 target.push_back(i);
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75 }
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76
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77 assert(target.size() == itemsCount_);
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78 }
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79 }