#!/usr/bin/env python
import vtk
from vtk.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()

# Image pipeline
reader = vtk.vtkImageReader()
reader.ReleaseDataFlagOff()
reader.SetDataByteOrderToLittleEndian()
reader.SetDataExtent(0,63,0,63,1,93)
reader.SetDataSpacing(3.2,3.2,1.5)
reader.SetDataOrigin(-100.8,-100.8,-69)
reader.SetFilePrefix("" + str(VTK_DATA_ROOT) + "/Data/headsq/quarter")
reader.SetDataMask(0x7fff)
reader.Update()
p1 = vtk.vtkPoints()
p2 = vtk.vtkPoints()
p1.InsertNextPoint(0,0,0)
p2.InsertNextPoint(-60,10,20)
p1.InsertNextPoint(-100,-100,-50)
p2.InsertNextPoint(-100,-100,-50)
p1.InsertNextPoint(-100,-100,50)
p2.InsertNextPoint(-100,-100,50)
p1.InsertNextPoint(-100,100,-50)
p2.InsertNextPoint(-100,100,-50)
p1.InsertNextPoint(-100,100,50)
p2.InsertNextPoint(-100,100,50)
p1.InsertNextPoint(100,-100,-50)
p2.InsertNextPoint(100,-100,-50)
p1.InsertNextPoint(100,-100,50)
p2.InsertNextPoint(100,-100,50)
p1.InsertNextPoint(100,100,-50)
p2.InsertNextPoint(100,100,-50)
p1.InsertNextPoint(100,100,50)
p2.InsertNextPoint(100,100,50)
transform = vtk.vtkThinPlateSplineTransform()
transform.SetSourceLandmarks(p1)
transform.SetTargetLandmarks(p2)
transform.SetBasisToR()
gridThinPlate = vtk.vtkTransformToGrid()
gridThinPlate.SetInput(transform)
gridThinPlate.SetGridExtent(0,64,0,64,0,50)
gridThinPlate.SetGridSpacing(3.2,3.2,3.0)
gridThinPlate.SetGridOrigin(-102.4,-102.4,-75)
gridThinPlate.SetGridScalarTypeToUnsignedChar()
gridThinPlate.Update()
gridTransform = vtk.vtkGridTransform()
gridTransform.SetDisplacementGridData(gridThinPlate.GetOutput())
gridTransform.SetDisplacementShift(gridThinPlate.GetDisplacementShift())
gridTransform.SetDisplacementScale(gridThinPlate.GetDisplacementScale())
reslice = vtk.vtkImageReslice()
reslice.SetInputConnection(reader.GetOutputPort())
reslice.SetResliceTransform(gridTransform)
reslice.SetInterpolationModeToLinear()
reslice.SetOutputSpacing(1,1,1)
viewer = vtk.vtkImageViewer()
viewer.SetInputConnection(reslice.GetOutputPort())
viewer.SetZSlice(70)
viewer.SetColorWindow(2000)
viewer.SetColorLevel(1000)
viewer.SetSize(200,200)
viewer.Render()
# --- end of script --
