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annotate OrthancStone/Sources/Toolbox/Internals/RectanglesIntegerProjection.cpp @ 1905:e318b524ad3f

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use UnionOfRectangles algorithm to render RT-STRUCT
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 31 Jan 2022 18:50:35 +0100
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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22
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23
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24 #include "RectanglesIntegerProjection.h"
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25
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26 #include <OrthancException.h>
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27
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28 #include <algorithm>
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29 #include <cassert>
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31
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32 namespace OrthancStone
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33 {
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34 namespace Internals
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35 {
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36 class RectanglesIntegerProjection::Endpoint
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37 {
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38 private:
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39 size_t intervalIndex_;
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40 double value_;
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41 bool isLow_;
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42
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43 public:
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44 Endpoint(size_t intervalIndex,
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45 double value,
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46 bool isLow) :
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47 intervalIndex_(intervalIndex),
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48 value_(value),
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49 isLow_(isLow)
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50 {
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51 }
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52
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53 bool operator< (const Endpoint& other) const
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54 {
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55 if (value_ < other.value_)
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56 {
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57 return true;
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58 }
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59 else if (value_ == other.value_)
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60 {
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61 return static_cast<int>(isLow_) < static_cast<int>(other.isLow_);
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62 }
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63 else
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64 {
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65 return false;
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66 }
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67 }
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68
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69 size_t GetIntervalIndex() const
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70 {
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71 return intervalIndex_;
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72 }
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73
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74 double GetValue() const
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75 {
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76 return value_;
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77 }
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78
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79 bool IsLow() const
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80 {
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81 return isLow_;
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82 }
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83 };
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84
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85
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86 RectanglesIntegerProjection::RectanglesIntegerProjection(const std::list<Extent2D>& rectangles,
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87 bool isHorizontal)
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88 {
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89 std::vector<Endpoint> endpoints;
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90 endpoints.reserve(2 * rectangles.size());
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91
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92 size_t count = 0;
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93 for (std::list<Extent2D>::const_iterator it = rectangles.begin(); it != rectangles.end(); ++it)
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94 {
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95 if (!it->IsEmpty())
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96 {
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97 if (isHorizontal)
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98 {
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99 assert(it->GetX1() < it->GetX2());
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100 endpoints.push_back(Endpoint(count, it->GetX1(), true));
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101 endpoints.push_back(Endpoint(count, it->GetX2(), false));
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102 }
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103 else
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104 {
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105 assert(it->GetY1() < it->GetY2());
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106 endpoints.push_back(Endpoint(count, it->GetY1(), true));
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107 endpoints.push_back(Endpoint(count, it->GetY2(), false));
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108 }
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109
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110 assert(endpoints[endpoints.size() - 2] < endpoints[endpoints.size() - 1]);
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111
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112 count++;
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113 }
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114 }
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115
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116 std::sort(endpoints.begin(), endpoints.end());
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117
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118 intervalsLow_.resize(count);
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119 intervalsHigh_.resize(count);
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120 endpointsToDouble_.reserve(count);
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121
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122 for (size_t i = 0; i < endpoints.size(); i++)
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123 {
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
124 if (endpointsToDouble_.empty() ||
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
125 endpointsToDouble_.back() < endpoints[i].GetValue())
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
126 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
127 endpointsToDouble_.push_back(endpoints[i].GetValue());
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
128 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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129
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
130 size_t intervalIndex = endpoints[i].GetIntervalIndex();
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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131
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
132 if (endpoints[i].IsLow())
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
133 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
134 intervalsLow_[intervalIndex] = endpointsToDouble_.size() - 1;
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
135 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
136 else
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
137 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
138 intervalsHigh_[intervalIndex] = endpointsToDouble_.size() - 1;
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
139 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
140 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
141
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
142 for (size_t i = 0; i < intervalsLow_.size(); i++)
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
143 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
144 assert(intervalsLow_[i] < intervalsHigh_[i]);
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
145 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
146 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
147
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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148
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
149 double RectanglesIntegerProjection::GetEndpointCoordinate(size_t index) const
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
150 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
151 if (index >= endpointsToDouble_.size())
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
152 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
153 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
154 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
155 else
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
156 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
157 return endpointsToDouble_[index];
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
158 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
159 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
160
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
161
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
162 size_t RectanglesIntegerProjection::GetProjectedRectanglesCount() const
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
163 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
164 assert(intervalsLow_.size() == intervalsHigh_.size());
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
165 return intervalsLow_.size();
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
166 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
167
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
168
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
169 size_t RectanglesIntegerProjection::GetProjectedRectangleLow(size_t index) const
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
170 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
171 if (index >= GetProjectedRectanglesCount())
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
172 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
173 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
174 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
175 else
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
176 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
177 return intervalsLow_[index];
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
178 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
179 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
180
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
181
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
182 size_t RectanglesIntegerProjection::GetProjectedRectangleHigh(size_t index) const
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
183 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
184 if (index >= GetProjectedRectanglesCount())
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
185 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
186 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
187 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
188 else
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
189 {
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
190 return intervalsHigh_[index];
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
191 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
192 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
193 }
08f2476e8f5e added classes OrientedIntegerLine2D and RectanglesIntegerProjection
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
194 }