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annotate OrthancStone/Sources/Loaders/OrthancSeriesVolumeProgressiveLoader.h @ 1755:1a775f4ee672

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added ability to specify initial slice in BasicFetchingStrategy and using it in OrthancSeriesVolumeProgressiveLoader
author bgo@SHARKNADO.localdomain
date Mon, 26 Apr 2021 12:05:40 +0200
parents 9ac2a65d4172
children 3889ae96d2e9
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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) 2017-2021 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 Lesser 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 * Lesser 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 Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #pragma once
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24
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25 #include "../Loaders/IFetchingItemsSorter.h"
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26 #include "../Loaders/IFetchingStrategy.h"
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27 #include "../Messages/IObservable.h"
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28 #include "../Messages/ObserverBase.h"
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29 #include "../Oracle/GetOrthancImageCommand.h"
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30 #include "../Oracle/GetOrthancWebViewerJpegCommand.h"
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31 #include "../Oracle/IOracle.h"
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32 #include "../Oracle/OrthancRestApiCommand.h"
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33 #include "../Toolbox/SlicesSorter.h"
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34 #include "../Volumes/DicomVolumeImage.h"
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35 #include "../Volumes/IVolumeSlicer.h"
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36
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37 #include "../Volumes/IGeometryProvider.h"
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40 #include <boost/shared_ptr.hpp>
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41
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42 namespace OrthancStone
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43 {
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44 class ILoadersContext;
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45 /**
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46 This class is used to manage the progressive loading of a volume that
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47 is stored in a Dicom series.
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48 */
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49 class OrthancSeriesVolumeProgressiveLoader :
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50 public ObserverBase<OrthancSeriesVolumeProgressiveLoader>,
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51 public IObservable,
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52 public IVolumeSlicer,
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53 public IGeometryProvider
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54 {
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55 public:
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56 class ISlicePostProcessor
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57 {
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58 public:
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59 virtual void ProcessCTDicomSlice(const Orthanc::DicomMap& dicom) = 0;
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60 };
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61
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62 private:
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63 static const unsigned int QUALITY_00 = 0;
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64 static const unsigned int QUALITY_01 = 1;
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65 static const unsigned int QUALITY_02 = 2;
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66
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67 class ExtractedSlice;
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69
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70 /** Helper class internal to OrthancSeriesVolumeProgressiveLoader */
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71 class SeriesGeometry : public boost::noncopyable
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72 {
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73 private:
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74 void CheckSlice(size_t index,
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75 const DicomInstanceParameters& reference) const;
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76
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77 void CheckVolume() const;
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78
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79 void Clear();
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80
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81 void CheckSliceIndex(size_t index) const;
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82
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83 std::unique_ptr<VolumeImageGeometry> geometry_;
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84 std::vector<DicomInstanceParameters*> slices_;
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85 std::vector<uint64_t> slicesRevision_;
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86
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87 public:
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88 ~SeriesGeometry()
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89 {
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90 Clear();
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91 }
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92
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93 void ComputeGeometry(SlicesSorter& slices);
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94
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95 virtual bool HasGeometry() const
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96 {
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97 return geometry_.get() != NULL;
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98 }
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99
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100 virtual const VolumeImageGeometry& GetImageGeometry() const;
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101
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102 const DicomInstanceParameters& GetSliceParameters(size_t index) const;
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103
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104 uint64_t GetSliceRevision(size_t index) const;
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105
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106 void IncrementSliceRevision(size_t index);
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107 };
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108
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109 void ScheduleNextSliceDownload();
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110
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111 void LoadGeometry(const OrthancRestApiCommand::SuccessMessage& message);
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112
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113 void SetSliceContent(unsigned int sliceIndex,
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114 const Orthanc::ImageAccessor& image,
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115 unsigned int quality);
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116
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117 void LoadBestQualitySliceContent(const GetOrthancImageCommand::SuccessMessage& message);
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118
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119 void LoadJpegSliceContent(const GetOrthancWebViewerJpegCommand::SuccessMessage& message);
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120
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121 ILoadersContext& loadersContext_;
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122 bool active_;
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123 bool progressiveQuality_;
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124 bool startCenter_;
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125 unsigned int simultaneousDownloads_;
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126 SeriesGeometry seriesGeometry_;
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127 boost::shared_ptr<DicomVolumeImage> volume_;
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128 std::unique_ptr<IFetchingItemsSorter::IFactory> sorter_;
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129 std::unique_ptr<IFetchingStrategy> strategy_;
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130 std::vector<unsigned int> slicesQuality_;
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131 bool volumeImageReadyInHighQuality_;
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132 boost::shared_ptr<ISlicePostProcessor> slicePostProcessor_;
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133
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134 /** See priority setters/getters below */
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135 int medadataSchedulingPriority_;
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136
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137 /** See priority setters/getters below */
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138 int sliceSchedulingPriority_;
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139
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140 OrthancSeriesVolumeProgressiveLoader(
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141 ILoadersContext& loadersContext,
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142 boost::shared_ptr<DicomVolumeImage> volume,
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143 bool progressiveQuality);
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144
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145 public:
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146 ORTHANC_STONE_DEFINE_ORIGIN_MESSAGE(__FILE__, __LINE__, VolumeImageReadyInHighQuality, OrthancSeriesVolumeProgressiveLoader);
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147
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148 /**
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149 See doc for the progressiveQuality_ field
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150 */
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151 static boost::shared_ptr<OrthancSeriesVolumeProgressiveLoader> Create(
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152 ILoadersContext& context,
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153 boost::shared_ptr<DicomVolumeImage> volume,
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154 bool progressiveQuality = false);
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155
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156 virtual ~OrthancSeriesVolumeProgressiveLoader();
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157
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158 void SetStartCenter(bool startCenter);
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159
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160 void SetSimultaneousDownloads(unsigned int count);
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161
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162 /**
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163 Sets the relative priority of the requests for metadata.
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164 - if p < PRIORITY_HIGH (-1) , the requests will be high priority
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165 - if PRIORITY_LOW (100) > p > PRIORITY_HIGH , the requests will be medium priority
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166 - if p > PRIORITY_LOW , the requests will be low priority
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167
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168 Default is 0 (medium)
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169 */
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170 void SetMetadataSchedulingPriority(int p);
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171
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172 /** @see SetMetadataSchedulingPriority */
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173 int GetMetadataSchedulingPriority() const;
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174
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175 /** Same as SetMetadataSchedulingPriority, for slices. Default is 0. */
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176 void SetSliceSchedulingPriority(int p);
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177
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178 /** @see SetSliceSchedulingPriority */
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179 int GetSliceSchedulingPriority() const;
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180
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181 /** Sets priorities for all requests. @see SetMetadataSchedulingPriority */
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182 void SetSchedulingPriority(int p);
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183
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184 void SetDicomSlicePostProcessor(boost::shared_ptr<ISlicePostProcessor> slicePostProcessor)
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185 {
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186 // this will delete the previously stored slice processor, if any
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187 slicePostProcessor_ = slicePostProcessor;
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188 }
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189
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190 boost::shared_ptr<ISlicePostProcessor> GetDicomSlicePostProcessor()
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191 {
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192 // this could be empty!
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193 return slicePostProcessor_;
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194 }
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195
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196 bool IsVolumeImageReadyInHighQuality() const
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197 {
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198 return volumeImageReadyInHighQuality_;
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199 }
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200
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201 void LoadSeries(const std::string& seriesId);
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202
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203 /**
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204 This getter is used by clients that do not receive the geometry through
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205 subscribing, for instance if they are created or listening only AFTER the
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206 "geometry loaded" message is broadcast
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207 */
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208 bool HasGeometry() const ORTHANC_OVERRIDE
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209 {
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210 return seriesGeometry_.HasGeometry();
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211 }
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212
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213 /**
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214 Same remark as HasGeometry
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215 */
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216 const VolumeImageGeometry& GetImageGeometry() const ORTHANC_OVERRIDE
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217 {
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218 return seriesGeometry_.GetImageGeometry();
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219 }
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220
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221 /**
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222 When a slice is requested, the strategy algorithm (that defines the
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223 sequence of resources to be loaded from the server) is modified to
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224 take into account this request (this is done in the ExtractedSlice ctor)
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225 */
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226 virtual IExtractedSlice*
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227 ExtractSlice(const CoordinateSystem3D& cuttingPlane) ORTHANC_OVERRIDE;
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228 };
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229 }