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#!/usr/bin/env python
import vtk
from vtk.test import Testing
from vtk.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
# Simple volume rendering example.
reader = vtk.vtkSLCReader()
reader.SetFileName(VTK_DATA_ROOT + "/Data/sphere.slc")
# Create transfer functions for opacity and color
opacityTransferFunction = vtk.vtkPiecewiseFunction()
opacityTransferFunction.AddPoint(0, 0.0)
opacityTransferFunction.AddPoint(30, 0.0)
opacityTransferFunction.AddPoint(80, 0.5)
opacityTransferFunction.AddPoint(255, 0.5)
colorTransferFunction = vtk.vtkColorTransferFunction()
colorTransferFunction.AddRGBPoint(0.0, 0.0, 0.0, 0.0)
colorTransferFunction.AddRGBPoint(64.0, 1.0, 0.0, 0.0)
colorTransferFunction.AddRGBPoint(128.0, 0.0, 0.0, 1.0)
colorTransferFunction.AddRGBPoint(192.0, 0.0, 1.0, 0.0)
colorTransferFunction.AddRGBPoint(255.0, 0.0, 0.2, 0.0)
# Create properties, mappers, volume actors, and ray cast function
volumeProperty = vtk.vtkVolumeProperty()
volumeProperty.SetColor(colorTransferFunction)
volumeProperty.SetScalarOpacity(opacityTransferFunction)
volumeProperty.SetInterpolationTypeToLinear()
volumeProperty.ShadeOn()
compositeFunction = vtk.vtkVolumeRayCastCompositeFunction()
ren1 = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren1)
renWin.SetSize(600, 300)
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
ren1.SetBackground(0.1, 0.2, 0.4)
i = 0
while i < 2:
j = 0
while j < 4:
idx = str(i) + "_" + str(j)
exec("volumeMapper_" + idx + " = vtk.vtkVolumeRayCastMapper()")
eval("volumeMapper_" + idx).SetInputConnection(reader.GetOutputPort())
eval("volumeMapper_" + idx).SetVolumeRayCastFunction(compositeFunction)
eval("volumeMapper_" + idx).SetSampleDistance(0.4)
eval("volumeMapper_" + idx).CroppingOn()
eval("volumeMapper_" + idx).SetCroppingRegionPlanes(
17, 33, 17, 33, 17, 33)
exec("volume_" + idx + " = vtk.vtkVolume()")
eval("volume_" + idx).SetMapper(eval("volumeMapper_" + idx))
eval("volume_" + idx).SetProperty(volumeProperty)
exec("userMatrix_" + idx + " = vtk.vtkTransform()")
eval("userMatrix_" + idx).PostMultiply()
eval("userMatrix_" + idx).Identity()
eval("userMatrix_" + idx).Translate(-25, -25, -25)
if (i == 0):
eval("userMatrix_" + idx).RotateX(j * 87 + 23)
eval("userMatrix_" + idx).RotateY(16)
else:
eval("userMatrix_" + idx).RotateX(27)
eval("userMatrix_" + idx).RotateY(j * 87 + 19)
eval("userMatrix_" + idx).Translate(j * 55 + 25, i * 55 + 25, 0)
eval("volume_" + idx).SetUserTransform(eval("userMatrix_" + idx))
ren1.AddViewProp(eval("volume_" + idx))
j += 1
i += 1
volumeMapper_0_0.SetCroppingRegionFlagsToSubVolume()
volumeMapper_0_1.SetCroppingRegionFlagsToCross()
volumeMapper_0_2.SetCroppingRegionFlagsToInvertedCross()
volumeMapper_0_3.SetCroppingRegionFlags(24600)
volumeMapper_1_0.SetCroppingRegionFlagsToFence()
volumeMapper_1_1.SetCroppingRegionFlagsToInvertedFence()
volumeMapper_1_2.SetCroppingRegionFlags(1)
volumeMapper_1_3.SetCroppingRegionFlags(67117057)
ren1.GetCullers().InitTraversal()
culler = ren1.GetCullers().GetNextItem()
culler.SetSortingStyleToBackToFront()
ren1.ResetCamera()
ren1.GetActiveCamera().Zoom(3.0)
renWin.Render()
def TkCheckAbort (object_binding, event_name):
foo = renWin.GetEventPending()
if (foo != 0):
renWin.SetAbortRender(1)
renWin.AddObserver("AbortCheckEvent", TkCheckAbort)
iren.Initialize()
#iren.Start()
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