171         orderedContourDict = OrderedDict(sorted(self.reslicers[self.contourOrientation].contours.items()))
172         contourList = []
173         for slice, contour in orderedContourDict.items():
174             contourList.append(contour)
175 
176         numberOfContours = len(orderedContourDict)
177         volumePolyDataList = []
178         for i in range(0, numberOfContours - 1):
179             appendPolyData = vtkAppendPolyData()
180             appendPolyData.AddInputData(contourList[i].GetContourRepresentation().GetContourRepresentationAsPolyData())
181             appendPolyData.AddInputData(contourList[i + 1].GetContourRepresentation().GetContourRepresentationAsPolyData())
182             appendPolyData.Update()
183             delaunay = vtkDelaunay3D()
184             delaunay.SetInputData(appendPolyData.GetOutput())
185             surfaceFilter = vtkDataSetSurfaceFilter()
186             surfaceFilter.SetInputConnection(0, delaunay.GetOutputPort())
187             surfaceFilter.Update()
188             polyData = surfaceFilter.GetOutput()
189             volumePolyDataList.append(polyData)
190 
191         if len(volumePolyDataList) == 1:
192             delaunay = vtkDelaunay3D()
193             delaunay.SetInputData(volumePolyDataList[0])
194             delaunayMapper = vtkDataSetMapper()
195             delaunayMapper.SetInputConnection(delaunay.GetOutputPort())
196             self.actor.SetMapper(delaunayMapper)
197             self.planes.GetRenderWindow().Render()
198         else:
199             booleanOperation = vtkBooleanOperationPolyDataFilter()
200             booleanOperation1 = vtkBooleanOperationPolyDataFilter()
201             booleanOperation.SetOperationToUnion()
202             booleanOperation1.SetOperationToUnion()
203 
204             for i in range(0, len(volumePolyDataList)):
205                 if i == 0:
206                     booleanOperation.AddInputData(0, volumePolyDataList[i])
207                     #booleanOperation.Update()
208                 elif i == 1:
209                     booleanOperation.AddInputData(1, volumePolyDataList[i])
210                     #booleanOperation.Update()
211                 elif i == 2:
212                     booleanOperation1.AddInputData(0, booleanOperation.GetOutput())
213                     booleanOperation1.AddInputData(1, volumePolyDataList[i])
214                     #booleanOperation1.Update()
215                 else:
216                     boolCopy = booleanOperation1.GetOutput()
217 #                    booleanOperation1.RemoveAllInputs()
218                     booleanOperation1.RemoveAllInputConnections(0)
219                     booleanOperation1.RemoveAllInputConnections(1)
220 #                    booleanOperation1.Update()
221                     print(booleanOperation.GetNumberOfInputConnections(0), booleanOperation.GetNumberOfInputConnections(1), booleanOpera    tion1.GetNumberOfInputConnections(0), booleanOperation1.GetNumberOfInputConnections(1))
222                     booleanOperation1.AddInputData(0, boolCopy)
223                     booleanOperation1.AddInputData(1, volumePolyDataList[i])
224                     #booleanOperation1.Update()
225 
226             print(booleanOperation.GetNumberOfInputConnections(0), booleanOperation.GetNumberOfInputConnections(1), booleanOperation1.Ge    tNumberOfInputConnections(0), booleanOperation1.GetNumberOfInputConnections(1))
227 
228 #                print(booleanOperation.GetNumberOfInputConnections(0), booleanOperation.GetNumberOfInputConnections(1), booleanOperatio    n1.GetNumberOfInputConnections(0), booleanOperation1.GetNumberOfInputConnections(1))
229 
230             mapper = vtkPolyDataMapper()
231             if len(volumePolyDataList) == 2:
232                 mapper.SetInputConnection(booleanOperation.GetOutputPort())
233             else:
234                 mapper.SetInputConnection(booleanOperation1.GetOutputPort())
235             mapper.ScalarVisibilityOff()
236             self.actor.SetMapper(mapper)
237             self.planes.GetRenderWindow().Render()
238 
239         self.reslicers[self.contourOrientation].stopContouring()
240         self.contouring = False
241         self.orientationBox.setEnabled(True)
242         self.startContouringButton.setEnabled(True)
243         self.generateVolumeButton.setEnabled(False)
244         self.cancelContouringButton.setEnabled(False)
245         self.applyButton.setEnabled(True)