def RenderImage(self, origImg):
self.ren[0].RemoveVolume(self.volume)
self.ren[0].RemoveActor(self.outLine)
# create volume
volumeImport = vtk.vtkImageImport()
data_string = origImg.tostring()
if origImg.dtype == np.uint16:
volumeImport.CopyImportVoidPointer(data_string, len(data_string))
volumeImport.SetDataScalarTypeToUnsignedShort()
else:
volumeImport.CopyImportVoidPointer(data_string, len(data_string))
volumeImport.SetDataScalarTypeToUnsignedChar()
volumeImport.SetNumberOfScalarComponents(1)
sz = origImg.shape
volumeImport.SetDataExtent(0, sz[2] - 1, 0, sz[1] - 1, 0, sz[0] - 1)
volumeImport.SetWholeExtent(0, sz[2] - 1, 0, sz[1] - 1, 0, sz[0] - 1)
volumeImport.Update()
self.importData.DeepCopy(volumeImport.GetOutput())
self.volumeSize = sz
#
alphaChannelFunc = vtk.vtkPiecewiseFunction()
alphaChannelFunc.AddPoint(0, 0.0)
alphaChannelFunc.AddPoint(10, 0.9)
#
self.colorFunc.AddRGBPoint(1, 0.0, 0.0, 0.0)
self.colorFunc.AddRGBPoint(255, 1.0, 1.0, 1.0)
#
volumeProperty = vtk.vtkVolumeProperty()
volumeProperty.SetColor(self.colorFunc)
volumeProperty.SetScalarOpacity(alphaChannelFunc)
volumeProperty.SetInterpolationType(3)
#
volumeMapper = vtk.vtkSmartVolumeMapper()
volumeMapper.SetBlendModeToMaximumIntensity()
# volumeMapper.SetVolumeRayCastFunction(compositeFunction)
volumeMapper.SetInterpolationModeToCubic()
volumeMapper.SetInputConnection(volumeImport.GetOutputPort())
self.volume.SetMapper(volumeMapper)
self.volume.SetProperty(volumeProperty)
self.volume.SetUserTransform(self.transform)
#
outLineSource = vtk.vtkVolumeOutlineSource()
outLineSource.SetVolumeMapper(volumeMapper)
outLineMapper = vtk.vtkPolyDataMapper()
outLineMapper.SetInputConnection(outLineSource.GetOutputPort())
self.outLine.SetMapper(outLineMapper)
self.outLine.GetProperty().SetColor(0, 1, 1)
self.outLine.SetUserTransform(self.transform)
self.ren[0].AddVolume(self.volume)
self.ren[0].AddActor(self.outLine)
self.ren[0].ResetCamera()
volumeProperty.SetAmbient(0.6) volumeProperty.SetDiffuse(0.6) volumeProperty.SetSpecular(0.1) volume = vtk.vtkLODProp3D() lod2D = volume.AddLOD(volumeMapper2D, volumeProperty, 0.01) lod3D = volume.AddLOD(volumeMapper3D, volumeProperty, 0.1) lodRC = volume.AddLOD(volumeMapper, volumeProperty, 1.0) volume.SetLODLevel(lod2D, 2.0) volume.SetLODLevel(lod3D, 1.0) volume.SetLODLevel(lodRC, 0.0) # disable ray casting #volume.DisableLOD(lod3D) volume.DisableLOD(lodRC) cropOutlineSource = vtk.vtkVolumeOutlineSource() cropOutlineSource.SetVolumeMapper(volumeMapper) cropOutlineSource.GenerateScalarsOn() cropOutlineSource.SetActivePlaneId(0) cropOutlineMapper = vtk.vtkPolyDataMapper() cropOutlineMapper.SetInputConnection(cropOutlineSource.GetOutputPort()) cropOutline = vtk.vtkActor() cropOutline.SetMapper(cropOutlineMapper) #--------------------------------------------------------- # Do the surface rendering skinExtractor = vtk.vtkMarchingCubes() skinExtractor.SetInputConnection(reader.GetOutputPort()) skinExtractor.SetValue(0,500)
clippingPlanes.AddItem(plane4) clippingPlanes.AddItem(plane5) clippingPlanes.AddItem(plane6) # Cropping planes are in data coords volumeMapper1 = vtk.vtkFixedPointVolumeRayCastMapper() volumeMapper1.SetInputConnection(reader.GetOutputPort()) volumeMapper1.CroppingOn() volumeMapper1.SetCroppingRegionPlanes(16, 33, 16, 33, 16, 33) volumeMapper1.SetClippingPlanes(clippingPlanes) volume1 = vtk.vtkVolume() volume1.SetMapper(volumeMapper1) volume1.SetProperty(volumeProperty) outline1 = vtk.vtkVolumeOutlineSource() outline1.SetVolumeMapper(volumeMapper1) outline1.GenerateFacesOn() outline1.GenerateScalarsOn() preTrans1 = vtk.vtkTransformPolyDataFilter() preTrans1.SetInputConnection(outline1.GetOutputPort()) preTrans1.SetTransform(userTrans) outlineClip1 = vtk.vtkClipClosedSurface() outlineClip1.SetInputConnection(preTrans1.GetOutputPort()) outlineClip1.SetClippingPlanes(clippingPlanes) outlineClip1.GenerateFacesOff() outlineClip1.GenerateOutlineOn() outlineClip1.SetScalarModeToColors() outlineClip1.SetClipColor(1, 1, 0)
volumeProperty.SetAmbient(0.6) volumeProperty.SetDiffuse(0.6) volumeProperty.SetSpecular(0.1) volume = vtk.vtkLODProp3D() lod2D = volume.AddLOD(volumeMapper2D, volumeProperty, 0.01) lod3D = volume.AddLOD(volumeMapper3D, volumeProperty, 0.1) lodRC = volume.AddLOD(volumeMapper, volumeProperty, 1.0) volume.SetLODLevel(lod2D, 2.0) volume.SetLODLevel(lod3D, 1.0) volume.SetLODLevel(lodRC, 0.0) # disable ray casting #volume.DisableLOD(lod3D) volume.DisableLOD(lodRC) cropOutlineSource = vtk.vtkVolumeOutlineSource() cropOutlineSource.SetVolumeMapper(volumeMapper) cropOutlineSource.GenerateScalarsOn() cropOutlineSource.SetActivePlaneId(0) cropOutlineMapper = vtk.vtkPolyDataMapper() cropOutlineMapper.SetInputConnection(cropOutlineSource.GetOutputPort()) cropOutline = vtk.vtkActor() cropOutline.SetMapper(cropOutlineMapper) #--------------------------------------------------------- # Do the surface rendering skinExtractor = vtk.vtkMarchingCubes() skinExtractor.SetInputConnection(reader.GetOutputPort()) skinExtractor.SetValue(0, 500)