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annotate OrthancStone/Sources/Toolbox/Internals/OrientedIntegerLine2D.cpp @ 2069:5956d7357098 deep-learning

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macro ORTHANC_HAS_WASM_SIMD has to be manually defined
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 19 May 2023 17:00:17 +0200
parents 08f2476e8f5e
children 07964689cb0b
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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
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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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24 #include "OrientedIntegerLine2D.h"
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25
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26 #include <cassert>
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27 #include <map>
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29
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30 namespace OrthancStone
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31 {
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32 namespace Internals
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33 {
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34 OrientedIntegerLine2D::OrientedIntegerLine2D(size_t x1,
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35 size_t y1,
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36 size_t x2,
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37 size_t y2) :
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38 x1_(x1),
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39 y1_(y1),
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40 x2_(x2),
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41 y2_(y2)
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42 {
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43 }
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44
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45 void OrientedIntegerLine2D::ExtractChains(std::list<Chain>& chains,
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46 const std::vector<OrientedIntegerLine2D>& edges)
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47 {
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48 chains.clear();
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49
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50 typedef std::map< std::pair<size_t, size_t>, std::list<size_t> > Index;
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51 Index index;
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52
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53 for (size_t i = 0; i < edges.size(); i++)
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54 {
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55 index[std::make_pair(edges[i].GetX1(), edges[i].GetY1())].push_back(i);
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56 }
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57
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58 std::vector<bool> visited(edges.size(), false);
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60 for (size_t i = 0; i < edges.size(); i++)
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61 {
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62 if (!visited[i])
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63 {
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64 Chain chain;
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65
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66 size_t current = i;
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67
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68 chain.push_back(std::make_pair(edges[current].GetX1(), edges[current].GetY1()));
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69
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70 for (;;)
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71 {
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72 visited[current] = true;
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74 std::pair<size_t, size_t> start(edges[current].GetX1(), edges[current].GetY1());
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75 std::pair<size_t, size_t> end(edges[current].GetX2(), edges[current].GetY2());
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76
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77 assert(index.find(start) != index.end());
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78 index[start].pop_back();
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79
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80 chain.push_back(end);
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81 Index::iterator next = index.find(end);
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83 if (next == index.end() /* non-closed chain */ ||
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84 next->second.empty())
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85 {
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86 break;
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87 }
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88 else
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89 {
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90 current = next->second.back();
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91 }
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92 }
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94 chains.push_back(chain);
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95 }
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96 }
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97 }
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98 }
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99 }