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#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtkimagemipviewer.py,v $
## Language: Python
## Date: $Date: 2006/06/20 12:12:05 $
## Version: $Revision: 1.1 $
## Copyright (c) Luca Antiga, David Steinman. All rights reserved.
## See LICENCE file for details.
## This software is distributed WITHOUT ANY WARRANTY; without even
## the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
## PURPOSE. See the above copyright notices for more information.
import vtk
import sys
import vtkvmtk
import vmtkrenderer
import pypes
vmtkimagemipviewer = 'vmtkImageMIPViewer'
class vmtkImageMIPViewer(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.Image = None
self.vmtkRenderer = None
self.OwnRenderer = 0
self.Display = 1
self.ArrayName = ''
self.SampleDistance = 1.0
self.AutoSampleDistance = 1
self.WindowLevel = [0.0, 0.0]
self.Volume = None
self.SetScriptName('vmtkimagemipviewer')
self.SetScriptDoc('display a 3D image')
self.SetInputMembers([
['Image','i','vtkImageData',1,'','the input image','vmtkimagereader'],
['ArrayName','array','str',1,'','name of the array to display'],
['vmtkRenderer','renderer','vmtkRenderer',1,'','external renderer'],
['SampleDistance','sampledistance','float',1,'(0.0,)','the distance at sample projections are generated'],
['AutoSampleDistance','autosampledistance','bool',1,'','toggle automatic sample distance'],
['WindowLevel','windowlevel','float',2,'','the window/level for generating the rendering'],
['Display','display','bool',1,'','toggle rendering']
])
self.SetOutputMembers([
['Image','o','vtkImageData',1,'','the output image','vmtkimagewriter']
])
def BuildView(self):
if not self.vmtkRenderer:
self.vmtkRenderer = vmtkrenderer.vmtkRenderer()
self.vmtkRenderer.Initialize()
self.OwnRenderer = 1
self.vmtkRenderer.RegisterScript(self)
if self.Volume:
self.vmtkRenderer.Renderer.RemoveVolume(self.Volume)
if (self.ArrayName != ''):
self.Image.GetPointData().SetActiveScalars(self.ArrayName)
scalarRange = [0.0, 0.0]
if self.WindowLevel[0] > 0.0:
scalarRange = [self.WindowLevel[1] - self.WindowLevel[0]/2.0, self.WindowLevel[1] + self.WindowLevel[0]/2.0]
else:
scalarRange = self.Image.GetScalarRange()
colorTransferFunction = vtk.vtkColorTransferFunction()
colorTransferFunction.AddRGBPoint(scalarRange[0], 0.0, 0.0, 0.0)
colorTransferFunction.AddRGBPoint(scalarRange[1], 1.0, 1.0, 1.0)
volumeMapper = vtk.vtkFixedPointVolumeRayCastMapper()
volumeMapper.SetInput(self.Image)
volumeMapper.SetBlendModeToMaximumIntensity()
if self.AutoSampleDistance:
volumeMapper.AutoAdjustSampleDistancesOn()
else:
volumeMapper.SetSampleDistance(self.SampleDistance)
volumeProperty = vtk.vtkVolumeProperty()
volumeProperty.ShadeOn()
volumeProperty.SetInterpolationTypeToLinear()
volumeProperty.SetColor(colorTransferFunction)
self.Volume = vtk.vtkVolume()
self.Volume.SetMapper(volumeMapper)
self.Volume.SetProperty(volumeProperty)
self.vmtkRenderer.Renderer.AddVolume(self.Volume)
if (self.Display == 1):
self.vmtkRenderer.Render()
if self.OwnRenderer:
self.vmtkRenderer.Deallocate()
def Execute(self):
if (self.Image == None) & (self.Display == 1):
self.PrintError('Error: no Image.')
self.BuildView()
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
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