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package require vtk
package require vtkinteraction
package require vtktesting
# Create the RenderWindow, Renderer and both Actors
#
vtkRenderer ren1
vtkRenderWindow renWin
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
# 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 1 93
v16 SetDataSpacing 3.2 3.2 1.5
v16 Update
vtkMarchingContourFilter iso
iso SetInputConnection [v16 GetOutputPort]
iso SetValue 0 1125
vtkPolyDataMapper isoMapper
isoMapper SetInputConnection [iso GetOutputPort]
isoMapper ScalarVisibilityOff
vtkActor isoActor
isoActor SetMapper isoMapper
eval [isoActor GetProperty] SetColor $antique_white
vtkOutlineFilter outline
outline SetInputConnection [v16 GetOutputPort]
vtkPolyDataMapper outlineMapper
outlineMapper SetInputConnection [outline GetOutputPort]
vtkActor outlineActor
outlineActor SetMapper outlineMapper
outlineActor VisibilityOff
# Add the actors to the renderer, set the background and size
#
ren1 AddActor outlineActor
ren1 AddActor isoActor
ren1 SetBackground 0.2 0.3 0.4
renWin SetSize 200 200
ren1 ResetCamera
[ren1 GetActiveCamera] Elevation 90
[ren1 GetActiveCamera] SetViewUp 0 0 -1
[ren1 GetActiveCamera] Dolly 1.5
ren1 ResetCameraClippingRange
renWin Render
# 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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