[vtkusers] Rendering 16 Bit microscopy Data with one LUT and TF per channel into one volume with color mixing

[j-P]

Here is the code btw 

append = vtk.vtkImageAppendComponents()
append.SetInputConnection(red.GetOutputPort())
append.AddInputConnection(green.GetOutputPort())
append.AddInputConnection(blue.GetOutputPort())
append.Update()

mapper = vtk.vtkFixedPointVolumeRayCastMapper() #always look w which mappser
suits best
#mapper.SetInput(itk2vtk.GetOutput())
#mapper.SetInput(reader.GetOutput())
mapper.SetInput(append.GetOutput())

# volume properties
volprop = vtk.vtkVolumeProperty()
volprop.ShadeOn()
volprop.SetInterpolationTypeToLinear()
volprop.IndependentComponentsOn()

opacityTF = vtk.vtkPiecewiseFunction()
opacityTF.AddPoint(    0.0,  0.0 )
opacityTF.AddPoint(   1500.0,  0.0 )
opacityTF.AddPoint(   65535.0,  128.0 )
volprop.SetScalarOpacity(0,opacityTF)

colourTF = vtk.vtkColorTransferFunction()
colourTF.AddRGBPoint(   0.0,  0.0, 0.0, 0.0 )
colourTF.AddRGBPoint(   2000.0,  0.0, 0.0, 128.0 )
colourTF.AddRGBPoint(   65535.0, 0.0, 0.0, 256.0 )
volprop.SetColor(0,colourTF)

opacityTF = vtk.vtkPiecewiseFunction()
opacityTF.AddPoint(   0.0,  0.0 )
opacityTF.AddPoint(   1500.0,  0.0 )
opacityTF.AddPoint(   65535.0,  128.0 )
volprop.SetScalarOpacity(1,opacityTF)

# opacityTF = vtk.vtkPiecewiseFunction()
# opacityTF.AddPoint(    0.0,  0.0 )
# opacityTF.AddPoint(   1500.0,  0.0 )
# opacityTF.AddPoint(   65535.0,  180.0 )
# volprop.SetColor(1,opacityTF)

colourTF = vtk.vtkColorTransferFunction()
colourTF.AddRGBPoint(   0.0,  0.0, 0.0, 0.0 )
colourTF.AddRGBPoint(   2000.0,  0.0, 128.0, 0.0 )
colourTF.AddRGBPoint(   65535.0, 0.0, 256.0, 0.0 )
volprop.SetColor(1,colourTF)


opacityTF = vtk.vtkPiecewiseFunction()
opacityTF.AddPoint(   0.0,  0.0 )
opacityTF.AddPoint(   1500.0,  0.0 )
opacityTF.AddPoint(   65535.0,  128.0 )
volprop.SetScalarOpacity(2,opacityTF)

colourTF = vtk.vtkColorTransferFunction()
colourTF.AddRGBPoint(   0.0,  0.0, 0.0, 0.0 )
colourTF.AddRGBPoint(   2000.0,  128.0, 0.0, 0.0 )
colourTF.AddRGBPoint(   65535.0, 256.0, 0.0, 0.0 )
volprop.SetColor(2,colourTF)

# opacityTF = vtk.vtkPiecewiseFunction()
# opacityTF.AddPoint(    0.0,  0.0 )
# opacityTF.AddPoint(   128.0,  0.0 )
# opacityTF.AddPoint(   255.0,  255.0 )
# volprop.SetScalarOpacity(1,opacityTF)

# opacityTF = vtk.vtkPiecewiseFunction()
# opacityTF.AddPoint(    0.0,  0.0 )
# opacityTF.AddPoint(   128.0,  0.0 )
# opacityTF.AddPoint(   255.0,  255.0 )
# volprop.SetScalarOpacity(2,opacityTF)



# actor
volume = vtk.vtkVolume()
volume.SetProperty(volprop)
volume.SetMapper(mapper)


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