#!/usr/local/bin/python
import os
try:
  VTK_DATA = os.environ['VTK_DATA']
except KeyError:
  VTK_DATA = '../../../vtkdata/'


from vtkpython import *
from WindowLevelInterface import *

# Diffuses to 26 neighbors if difference is below threshold.

# Image pipeline

reader = vtkImageReader()
reader.SetDataByteOrderToLittleEndian()
reader.SetDataExtent(0,255,0,255,1,93)
reader.SetFilePrefix(VTK_DATA + "/fullHead/headsq")
reader.SetDataMask(0x7fff)
reader.SetDataSpacing(1,1,2)
#reader.DebugOn()


diffusion = vtkImageAnisotropicDiffusion3D()
diffusion.SetInput(reader.GetOutput())
diffusion.SetDiffusionFactor(1.0)
diffusion.SetDiffusionThreshold(100.0)
diffusion.SetNumberOfIterations(5)
diffusion.ReleaseDataFlagOff()


viewer = vtkImageViewer()
#viewer.DebugOn()
viewer.SetInput(diffusion.GetOutput())
viewer.SetZSlice(22)
viewer.SetColorWindow(3000)
viewer.SetColorLevel(1500)


#make interface
WindowLevelInterface(viewer)