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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 "VolumeSceneLayerSource.h"
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23
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24 #include <Core/OrthancException.h>
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25
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26 namespace OrthancStone
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27 {
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28 static bool IsSameCuttingPlane(const CoordinateSystem3D& a,
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29 const CoordinateSystem3D& b)
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30 {
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31 // TODO - What if the normal is reversed?
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32 double distance;
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33 return (CoordinateSystem3D::ComputeDistance(distance, a, b) &&
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34 LinearAlgebra::IsCloseToZero(distance));
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35 }
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36
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37
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38 void VolumeSceneLayerSource::ClearLayer()
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39 {
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40 scene_.DeleteLayer(layerDepth_);
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41 lastPlane_.reset(NULL);
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42 }
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43
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44
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45 VolumeSceneLayerSource::VolumeSceneLayerSource(Scene2D& scene,
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46 int layerDepth,
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47 const boost::shared_ptr<IVolumeSlicer>& slicer) :
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48 scene_(scene),
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49 layerDepth_(layerDepth),
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50 slicer_(slicer)
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51 {
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52 if (slicer == NULL)
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53 {
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54 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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55 }
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56 }
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57
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58
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59 void VolumeSceneLayerSource::RemoveConfigurator()
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60 {
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61 configurator_.reset();
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62 lastPlane_.reset();
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63 }
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64
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65
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66 void VolumeSceneLayerSource::SetConfigurator(ILayerStyleConfigurator* configurator) // Takes ownership
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67 {
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68 if (configurator == NULL)
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69 {
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70 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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71 }
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72
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73 configurator_.reset(configurator);
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74
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75 // Invalidate the layer
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76 lastPlane_.reset(NULL);
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77 }
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78
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79
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80 ILayerStyleConfigurator& VolumeSceneLayerSource::GetConfigurator() const
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81 {
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82 if (configurator_.get() == NULL)
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83 {
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84 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
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85 }
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86
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87 return *configurator_;
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88 }
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89
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90
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91 void VolumeSceneLayerSource::Update(const CoordinateSystem3D& plane)
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92 {
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93 assert(slicer_.get() != NULL);
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94 std::auto_ptr<IVolumeSlicer::IExtractedSlice> slice(slicer_->ExtractSlice(plane));
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95
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96 if (slice.get() == NULL)
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97 {
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98 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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99 }
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100
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101 if (!slice->IsValid())
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102 {
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103 // The slicer cannot handle this cutting plane: Clear the layer
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104 ClearLayer();
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105 }
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106 else if (lastPlane_.get() != NULL &&
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107 IsSameCuttingPlane(*lastPlane_, plane) &&
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108 lastRevision_ == slice->GetRevision())
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109 {
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110 // The content of the slice has not changed: Don't update the
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111 // layer content, but possibly update its style
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112
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113 if (configurator_.get() != NULL &&
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114 configurator_->GetRevision() != lastConfiguratorRevision_ &&
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115 scene_.HasLayer(layerDepth_))
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116 {
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117 configurator_->ApplyStyle(scene_.GetLayer(layerDepth_));
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118 }
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119 }
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120 else
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121 {
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122 // Content has changed: An update is needed
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123 lastPlane_.reset(new CoordinateSystem3D(plane));
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124 lastRevision_ = slice->GetRevision();
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125
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126 std::auto_ptr<ISceneLayer> layer(slice->CreateSceneLayer(configurator_.get(), plane));
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127 if (layer.get() == NULL)
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128 {
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129 ClearLayer();
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130 }
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131 else
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132 {
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133 if (configurator_.get() != NULL)
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134 {
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135 lastConfiguratorRevision_ = configurator_->GetRevision();
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136 configurator_->ApplyStyle(*layer);
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137 }
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138
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139 scene_.SetLayer(layerDepth_, layer.release());
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140 }
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141 }
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142 }
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143 }
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