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package require vtk
package require vtkinteraction
package require vtktesting
# create pipeline
#
vtkVolume16Reader v16
v16 SetDataDimensions 64 64
[v16 GetOutput] SetOrigin 0.0 0.0 0.0
v16 SetDataByteOrderToLittleEndian
v16 SetFilePrefix "$VTK_DATA_ROOT/Data/headsq/quarter"
v16 SetImageRange 45 45
v16 SetDataSpacing 3.2 3.2 1.5
v16 Update
# do the pixel clipping
vtkClipDataSet clip
clip SetInputConnection [v16 GetOutputPort]
clip SetValue 1000
vtkDataSetMapper clipMapper
clipMapper SetInputConnection [clip GetOutputPort]
clipMapper ScalarVisibilityOff
vtkActor clipActor
clipActor SetMapper clipMapper
# put an outline around the data
vtkOutlineFilter outline
outline SetInputConnection [v16 GetOutputPort]
vtkPolyDataMapper outlineMapper
outlineMapper SetInputConnection [outline GetOutputPort]
vtkActor outlineActor
outlineActor SetMapper outlineMapper
outlineActor VisibilityOff
# Create the RenderWindow, Renderer and both Actors
#
vtkRenderer ren1
vtkRenderWindow renWin
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
# Add the actors to the renderer, set the background and size
#
ren1 AddActor outlineActor
ren1 AddActor clipActor
ren1 SetBackground 0 0 0
renWin SetSize 200 200
iren Initialize
# render the image
#
iren AddObserver UserEvent {wm deiconify .vtkInteract}
# prevent the tk window from showing up then start the event loop
wm withdraw .
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