package require vtk
package require vtkinteraction

# Create the RenderWindow, Renderer and both Actors
#
vtkRenderer ren1
vtkRenderWindow renWin
    renWin AddRenderer ren1
vtkRenderWindowInteractor iren
    iren SetRenderWindow renWin

vtkPNGReader reader
reader SetFileName "$VTK_DATA_ROOT/Data/fullhead15.png"

vtkContourFilter iso
    iso SetInputConnection [reader GetOutputPort]
    iso GenerateValues 12 500 1150
vtkPolyDataMapper isoMapper
    isoMapper SetInputConnection [iso GetOutputPort]
    isoMapper ScalarVisibilityOff
vtkActor isoActor
    isoActor SetMapper isoMapper
    eval [isoActor GetProperty] SetColor 0 0 0

vtkOutlineFilter outline
    outline SetInputConnection [reader GetOutputPort]
vtkPolyDataMapper outlineMapper
    outlineMapper SetInputConnection [outline GetOutputPort]
vtkActor outlineActor
    outlineActor SetMapper outlineMapper
set outlineProp [outlineActor GetProperty]
#eval $outlineProp SetColor 0 0 0

# Add the actors to the renderer, set the background and size
#
ren1 AddActor outlineActor
ren1 AddActor isoActor
ren1 SetBackground 0.8 0.8 1
renWin SetSize 400 400

ren1 ResetCamera
[ren1 GetActiveCamera] Zoom 1.3

iren Initialize

iren AddObserver UserEvent {wm deiconify .vtkInteract}

# prevent the tk window from showing up then start the event loop
wm withdraw .