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815
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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) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "DicomStructureSetLoader.h"
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23
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24 #include "../Scene2D/PolylineSceneLayer.h"
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25 #include "../Toolbox/GeometryToolbox.h"
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26
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27 namespace OrthancStone
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28 {
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29 class DicomStructureSetLoader::AddReferencedInstance : public LoaderStateMachine::State
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30 {
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31 private:
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32 std::string instanceId_;
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33
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34 public:
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35 AddReferencedInstance(DicomStructureSetLoader& that,
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36 const std::string& instanceId) :
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37 State(that),
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38 instanceId_(instanceId)
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39 {
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40 }
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41
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42 virtual void Handle(const OrthancRestApiCommand::SuccessMessage& message)
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43 {
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44 Json::Value tags;
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45 message.ParseJsonBody(tags);
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46
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47 Orthanc::DicomMap dicom;
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48 dicom.FromDicomAsJson(tags);
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49
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50 DicomStructureSetLoader& loader = GetLoader<DicomStructureSetLoader>();
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51 loader.content_->AddReferencedSlice(dicom);
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52
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53 loader.countProcessedInstances_ ++;
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54 assert(loader.countProcessedInstances_ <= loader.countReferencedInstances_);
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55
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56 if (loader.countProcessedInstances_ == loader.countReferencedInstances_)
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57 {
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58 // All the referenced instances have been loaded, finalize the RT-STRUCT
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59 loader.content_->CheckReferencedSlices();
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60 loader.revision_++;
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61 }
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62 }
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63 };
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64
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65
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66 // State that converts a "SOP Instance UID" to an Orthanc identifier
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67 class DicomStructureSetLoader::LookupInstance : public LoaderStateMachine::State
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68 {
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69 private:
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70 std::string sopInstanceUid_;
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71
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72 public:
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73 LookupInstance(DicomStructureSetLoader& that,
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74 const std::string& sopInstanceUid) :
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75 State(that),
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76 sopInstanceUid_(sopInstanceUid)
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77 {
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78 }
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79
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80 virtual void Handle(const OrthancRestApiCommand::SuccessMessage& message)
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81 {
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82 DicomStructureSetLoader& loader = GetLoader<DicomStructureSetLoader>();
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83
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84 Json::Value lookup;
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85 message.ParseJsonBody(lookup);
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86
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87 if (lookup.type() != Json::arrayValue ||
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88 lookup.size() != 1 ||
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89 !lookup[0].isMember("Type") ||
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90 !lookup[0].isMember("Path") ||
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91 lookup[0]["Type"].type() != Json::stringValue ||
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92 lookup[0]["ID"].type() != Json::stringValue ||
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93 lookup[0]["Type"].asString() != "Instance")
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94 {
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95 throw Orthanc::OrthancException(Orthanc::ErrorCode_UnknownResource);
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96 }
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97
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98 const std::string instanceId = lookup[0]["ID"].asString();
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99
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100 {
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101 std::auto_ptr<OrthancRestApiCommand> command(new OrthancRestApiCommand);
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102 command->SetHttpHeader("Accept-Encoding", "gzip");
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103 command->SetUri("/instances/" + instanceId + "/tags");
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104 command->SetPayload(new AddReferencedInstance(loader, instanceId));
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105 Schedule(command.release());
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106 }
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107 }
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108 };
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109
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110
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111 class DicomStructureSetLoader::LoadStructure : public LoaderStateMachine::State
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112 {
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113 public:
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114 LoadStructure(DicomStructureSetLoader& that) :
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115 State(that)
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116 {
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117 }
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118
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119 virtual void Handle(const OrthancRestApiCommand::SuccessMessage& message)
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120 {
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121 DicomStructureSetLoader& loader = GetLoader<DicomStructureSetLoader>();
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122
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123 {
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124 OrthancPlugins::FullOrthancDataset dicom(message.GetAnswer());
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125 loader.content_.reset(new DicomStructureSet(dicom));
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126 }
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127
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128 std::set<std::string> instances;
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129 loader.content_->GetReferencedInstances(instances);
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130
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131 loader.countReferencedInstances_ = instances.size();
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132
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133 for (std::set<std::string>::const_iterator
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134 it = instances.begin(); it != instances.end(); ++it)
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135 {
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136 std::auto_ptr<OrthancRestApiCommand> command(new OrthancRestApiCommand);
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137 command->SetUri("/tools/lookup");
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138 command->SetMethod(Orthanc::HttpMethod_Post);
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139 command->SetBody(*it);
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140 command->SetPayload(new LookupInstance(loader, *it));
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141 Schedule(command.release());
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142 }
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143 }
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144 };
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145
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146
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147 class DicomStructureSetLoader::Slice : public IExtractedSlice
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148 {
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149 private:
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150 const DicomStructureSet& content_;
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151 uint64_t revision_;
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152 bool isValid_;
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153
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154 public:
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155 Slice(const DicomStructureSet& content,
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156 uint64_t revision,
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157 const CoordinateSystem3D& cuttingPlane) :
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158 content_(content),
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159 revision_(revision)
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160 {
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161 bool opposite;
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162
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163 const Vector normal = content.GetNormal();
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164 isValid_ = (
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165 GeometryToolbox::IsParallelOrOpposite(opposite, normal, cuttingPlane.GetNormal()) ||
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166 GeometryToolbox::IsParallelOrOpposite(opposite, normal, cuttingPlane.GetAxisX()) ||
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167 GeometryToolbox::IsParallelOrOpposite(opposite, normal, cuttingPlane.GetAxisY()));
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168 }
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169
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170 virtual bool IsValid()
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171 {
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172 return isValid_;
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173 }
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174
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175 virtual uint64_t GetRevision()
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176 {
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177 return revision_;
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178 }
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179
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180 virtual ISceneLayer* CreateSceneLayer(const ILayerStyleConfigurator* configurator,
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181 const CoordinateSystem3D& cuttingPlane)
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182 {
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183 assert(isValid_);
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184
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185 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer);
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186 layer->SetThickness(2);
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187
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188 for (size_t i = 0; i < content_.GetStructuresCount(); i++)
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189 {
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190 const Color& color = content_.GetStructureColor(i);
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191
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192 std::vector< std::vector<DicomStructureSet::PolygonPoint> > polygons;
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193
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194 if (content_.ProjectStructure(polygons, i, cuttingPlane))
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195 {
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196 for (size_t j = 0; j < polygons.size(); j++)
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197 {
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198 PolylineSceneLayer::Chain chain;
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199 chain.resize(polygons[j].size());
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200
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201 for (size_t k = 0; k < polygons[j].size(); k++)
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202 {
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203 chain[k] = ScenePoint2D(polygons[j][k].first, polygons[j][k].second);
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204 }
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205
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206 layer->AddChain(chain, true /* closed */, color);
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207 }
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208 }
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209 }
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210
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211 return layer.release();
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212 }
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213 };
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214
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215
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216 DicomStructureSetLoader::DicomStructureSetLoader(IOracle& oracle,
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217 IObservable& oracleObservable) :
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218 LoaderStateMachine(oracle, oracleObservable),
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219 revision_(0),
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220 countProcessedInstances_(0),
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221 countReferencedInstances_(0)
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222 {
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223 }
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224
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225
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226 void DicomStructureSetLoader::LoadInstance(const std::string& instanceId)
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227 {
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228 Start();
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229
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230 instanceId_ = instanceId;
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231
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232 {
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233 std::auto_ptr<OrthancRestApiCommand> command(new OrthancRestApiCommand);
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234 command->SetHttpHeader("Accept-Encoding", "gzip");
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235 command->SetUri("/instances/" + instanceId + "/tags?ignore-length=3006-0050");
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236 command->SetPayload(new LoadStructure(*this));
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237 Schedule(command.release());
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238 }
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239 }
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240
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241
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242 IVolumeSlicer::IExtractedSlice* DicomStructureSetLoader::ExtractSlice(const CoordinateSystem3D& cuttingPlane)
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243 {
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244 if (content_.get() == NULL)
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245 {
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246 // Geometry is not available yet
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247 return new IVolumeSlicer::InvalidSlice;
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248 }
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249 else
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250 {
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251 return new Slice(*content_, revision_, cuttingPlane);
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252 }
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253 }
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254 }
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