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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 * This program is distributed in the hope that it will be useful, but
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU General Public License
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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18 **/
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19
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20
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21 #include <iostream>
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22
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23 #include <vtkRenderWindow.h>
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24 #include <vtkImageData.h>
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25 #include <vtkPiecewiseFunction.h>
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26 #include <vtkFixedPointVolumeRayCastMapper.h>
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27 #include <vtkColorTransferFunction.h>
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28 #include <vtkVolumeProperty.h>
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29 #include <vtkRenderWindowInteractor.h>
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30 #include <vtkRenderer.h>
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31 #include <vtkSmartPointer.h>
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32 #include <vtkOpenGLRenderer.h>
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33 #include <vtkInteractorStyleTrackballCamera.h>
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34
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35 #include <orthanc/OrthancCppClient.h>
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36
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37
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38 void Display(OrthancClient::Series& series)
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39 {
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40 /**
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41 * Load the 3D image from Orthanc into VTK.
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42 **/
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43
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44 vtkSmartPointer<vtkImageData> image = vtkSmartPointer<vtkImageData>::New();
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45 image->SetDimensions(series.GetWidth(), series.GetHeight(), series.GetInstanceCount());
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46 image->SetScalarType(VTK_SHORT);
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47 image->AllocateScalars();
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48
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49 if (series.GetWidth() != 0 &&
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50 series.GetHeight() != 0 &&
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51 series.GetInstanceCount() != 0)
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52 {
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53 series.Load3DImage(image->GetScalarPointer(0, 0, 0), Orthanc::PixelFormat_SignedGrayscale16,
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54 2 * series.GetWidth(), 2 * series.GetHeight() * series.GetWidth());
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55 }
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56
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57 image->SetSpacing(series.GetVoxelSizeX(),
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58 series.GetVoxelSizeY(),
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59 series.GetVoxelSizeZ());
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60
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61
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62 /**
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63 * The following code is based on the VTK sample for MIP
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64 * http://www.vtk.org/Wiki/VTK/Examples/Cxx/VolumeRendering/MinIntensityRendering
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65 **/
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66
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67 // Create a transfer function mapping scalar value to opacity
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68 double range[2];
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69 image->GetScalarRange(range);
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70
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71 vtkSmartPointer<vtkPiecewiseFunction> opacityTransfer =
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72 vtkSmartPointer<vtkPiecewiseFunction>::New();
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73 opacityTransfer->AddSegment(range[0], 0.0, range[1], 1.0);
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74
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75 vtkSmartPointer<vtkColorTransferFunction> colorTransfer =
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76 vtkSmartPointer<vtkColorTransferFunction>::New();
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77 colorTransfer->AddRGBPoint(0, 1.0, 1.0, 1.0);
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78 colorTransfer->AddRGBPoint(range[1], 1.0, 1.0, 1.0);
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79
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80 vtkSmartPointer<vtkVolumeProperty> property =
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81 vtkSmartPointer<vtkVolumeProperty>::New();
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82 property->SetScalarOpacity(opacityTransfer);
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83 property->SetColor(colorTransfer);
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84 property->SetInterpolationTypeToLinear();
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85
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86 // Create a Maximum Intensity Projection rendering
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87 vtkSmartPointer<vtkFixedPointVolumeRayCastMapper> mapper =
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88 vtkSmartPointer<vtkFixedPointVolumeRayCastMapper>::New();
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89 mapper->SetBlendModeToMaximumIntensity();
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90 mapper->SetInput(image);
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91
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92 vtkSmartPointer<vtkVolume> volume = vtkSmartPointer<vtkVolume>::New();
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93 volume->SetMapper(mapper);
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94 volume->SetProperty(property);
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95
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96 vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkOpenGLRenderer>::New();
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97 renderer->AddViewProp(volume);
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98 renderer->SetBackground(0.1, 0.2, 0.3); // Background color dark blue
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99
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100 vtkSmartPointer<vtkInteractorStyleTrackballCamera> style =
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101 vtkSmartPointer<vtkInteractorStyleTrackballCamera>::New();
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102
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103 vtkSmartPointer<vtkRenderWindow> window = vtkSmartPointer<vtkRenderWindow>::New();
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104 window->AddRenderer(renderer);
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105
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106 vtkSmartPointer<vtkRenderWindowInteractor> interactor = vtkSmartPointer<vtkRenderWindowInteractor>::New();
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107 interactor->SetRenderWindow(window);
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108 interactor->SetInteractorStyle(style);
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109 interactor->Start();
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110 }
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111
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112
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113 int main()
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114 {
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115 try
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116 {
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117 // The following explicit initialization is not required, except
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118 // if you wish to specify the full path to the shared library
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119 OrthancClient::Initialize();
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120
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121 // Use the commented code below if you know the identifier of a
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122 // series that corresponds to a 3D image.
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123
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124 /*
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125 {
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126 OrthancClient::OrthancConnection orthanc("http://localhost:8042");
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127 OrthancClient::Series series(orthanc, "dc5ec3d9-6e1a7b2c-73a829f0-64c609f6-ef976a97");
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128 Display(series);
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129 return 0;
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130 }
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131 */
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132
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133
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134 // Try and find a 3D image inside the local store
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135 OrthancClient::OrthancConnection orthanc("http://localhost:8042");
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136
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137 for (unsigned int i = 0; i < orthanc.GetPatientCount(); i++)
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138 {
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139 OrthancClient::Patient patient(orthanc.GetPatient(i));
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140 std::cout << "Patient: " << patient.GetId() << std::endl;
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141
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142 for (unsigned int j = 0; j < patient.GetStudyCount(); j++)
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143 {
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144 OrthancClient::Study study(patient.GetStudy(j));
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145 std::cout << " Study: " << study.GetId() << std::endl;
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146
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147 for (unsigned int k = 0; k < study.GetSeriesCount(); k++)
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148 {
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149 OrthancClient::Series series(study.GetSeries(k));
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150 std::cout << " Series: " << series.GetId() << std::endl;
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151
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152 if (series.Is3DImage())
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153 {
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154 Display(series);
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155 return 0;
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156 }
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157 else
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158 {
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159 std::cout << " => Not a 3D image..." << std::endl;
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160 }
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161 }
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162 }
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163 }
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164
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165 std::cout << "Unable to find a 3D image in the local Orthanc store" << std::endl;
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166
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167 return 0;
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168 }
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169 catch (OrthancClient::OrthancClientException& e)
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170 {
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171 std::cerr << "EXCEPTION: [" << e.What() << "]" << std::endl;
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172 return -1;
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173 }
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174 }
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