Mercurial > hg > orthanc

annotate OrthancServer/SliceOrdering.cpp @ 1702:9980875edc7c db-changes

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started work on SliceOrdering
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 12 Oct 2015 17:49:23 +0200
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children b80e76dd1d56
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1702
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "PrecompiledHeadersServer.h"
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34 #include "SliceOrdering.h"
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35
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36 #include "../Core/Toolbox.h"
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37
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38 #include <boost/lexical_cast.hpp>
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39
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40
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41 namespace Orthanc
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42 {
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43 static bool TokenizeVector(std::vector<float>& result,
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44 const std::string& value,
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45 unsigned int expectedSize)
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46 {
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47 std::vector<std::string> tokens;
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48 Toolbox::TokenizeString(tokens, value, '\\');
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49
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50 if (tokens.size() != expectedSize)
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51 {
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52 return false;
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53 }
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54
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55 result.resize(tokens.size());
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56
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57 for (size_t i = 0; i < tokens.size(); i++)
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58 {
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59 try
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60 {
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61 result[i] = boost::lexical_cast<float>(tokens[i]);
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62 }
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63 catch (boost::bad_lexical_cast&)
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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 return true;
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70 }
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71
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72
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73 static bool TokenizeVector(std::vector<float>& result,
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74 const DicomMap& map,
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75 const DicomTag& tag,
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76 unsigned int expectedSize)
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77 {
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78 const DicomValue* value = map.TestAndGetValue(tag);
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79
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80 if (value == NULL ||
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81 value->IsNull())
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82 {
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83 return false;
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84 }
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85 else
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86 {
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87 return TokenizeVector(result, value->AsString(), expectedSize);
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88 }
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89 }
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90
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91
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92 struct SliceOrdering::Instance
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93 {
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94 std::string instanceId_;
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95 bool hasPosition_;
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96 Vector position_;
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97 bool hasIndexInSeries_;
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98 size_t indexInSeries_;
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99
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100 Instance(ServerIndex& index,
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101 const std::string& instanceId) :
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102 instanceId_(instanceId)
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103 {
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104 DicomMap instance;
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105 if (!index.GetMainDicomTags(instance, instanceId, ResourceType_Instance, ResourceType_Instance))
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106 {
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107 throw OrthancException(ErrorCode_UnknownResource);
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108 }
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109
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110 std::vector<float> tmp;
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111 hasPosition_ = TokenizeVector(tmp, instance, DICOM_TAG_IMAGE_POSITION_PATIENT, 3);
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112
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113 if (hasPosition_)
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114 {
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115 position_[0] = tmp[0];
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116 position_[1] = tmp[1];
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117 position_[2] = tmp[2];
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118 }
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119
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120 std::string s;
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121 hasIndexInSeries_ = false;
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122
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123 try
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124 {
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125 if (index.LookupMetadata(s, instanceId, MetadataType_Instance_IndexInSeries))
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126 {
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127 indexInSeries_ = boost::lexical_cast<size_t>(s);
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128 hasIndexInSeries_ = true;
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129 }
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130 }
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131 catch (boost::bad_lexical_cast&)
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132 {
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133 }
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134 }
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135 };
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136
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137
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138 void SliceOrdering::ComputeNormal()
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139 {
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140 DicomMap series;
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141 if (!index_.GetMainDicomTags(series, seriesId_, ResourceType_Series, ResourceType_Series))
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142 {
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143 throw OrthancException(ErrorCode_UnknownResource);
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144 }
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145
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146 std::vector<float> cosines;
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147 hasNormal_ = TokenizeVector(cosines, series, DICOM_TAG_IMAGE_ORIENTATION_PATIENT, 6);
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148
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149 if (hasNormal_)
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150 {
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151 normal_[0] = cosines[1] * cosines[5] - cosines[2] * cosines[4];
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152 normal_[1] = cosines[2] * cosines[3] - cosines[0] * cosines[5];
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153 normal_[2] = cosines[0] * cosines[4] - cosines[1] * cosines[3];
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154 }
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155 }
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156
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157
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158 void SliceOrdering::CreateInstances()
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159 {
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160 std::list<std::string> instancesId;
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161 index_.GetChildren(instancesId, seriesId_);
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162
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163 instances_.reserve(instancesId.size());
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164 for (std::list<std::string>::const_iterator
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165 it = instancesId.begin(); it != instancesId.end(); ++it)
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166 {
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167 instances_.push_back(new Instance(index_, *it));
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168 }
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169 }
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170
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171
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172 bool SliceOrdering::SortUsingPositions()
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173 {
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174 if (!hasNormal_)
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175 {
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176 return false;
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177 }
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178
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179 for (size_t i = 0; i < instances_.size(); i++)
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180 {
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181 assert(instances_[i] != NULL);
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182 if (!instances_[i]->hasPosition_)
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183 {
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184 return false;
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185 }
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186 }
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187
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188
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189
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190 return true;
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191 }
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192
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193
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194 SliceOrdering::SliceOrdering(ServerIndex& index,
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195 const std::string& seriesId) :
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196 index_(index),
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197 seriesId_(seriesId)
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198 {
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199 ComputeNormal();
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200 CreateInstances();
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201 }
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202
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203
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204 SliceOrdering::~SliceOrdering()
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205 {
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206 for (std::vector<Instance*>::iterator
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207 it = instances_.begin(); it != instances_.end(); ++it)
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208 {
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209 if (*it != NULL)
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210 {
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211 delete *it;
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212 }
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213 }
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214 }
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215 }