catch {load vtktcl}
if { [catch {set VTK_TCL $env(VTK_TCL)}] != 0} { set VTK_TCL "../../examplesTcl" }
if { [catch {set VTK_DATA $env(VTK_DATA)}] != 0} { set VTK_DATA "../../../vtkdata" }

# Generate marching cubes head model (full resolution)

# get the interactor ui and colors
source $VTK_TCL/vtkInt.tcl
source $VTK_TCL/colors.tcl

# create pipeline
# reader reads slices
vtkVolume16Reader v16
    v16 SetDataDimensions 256 256
    v16 SetDataByteOrderToLittleEndian
    v16 SetFilePrefix "$VTK_DATA/fullHead/headsq"
    v16 SetDataSpacing 0.8 0.8 1.5
    v16 SetImageRange 30 50
    v16 SetDataMask 0x7fff
    [v16 GetOutput] ReleaseDataFlagOn

# extract thresholded cells
vtkThreshold threshold
  threshold SetInput [v16 GetOutput]
  threshold ThresholdBetween 400 700
  threshold AllScalarsOff
  [threshold GetOutput] ReleaseDataFlagOn

vtkContourFilter contour
  contour SetInput [threshold GetOutput]
  contour SetValue 0 600.5

#
vtkDataSetMapper mapper
  mapper SetInput [contour GetOutput]
  mapper ScalarVisibilityOff

vtkActor skin
    skin SetMapper mapper
    eval [skin GetProperty] SetColor $flesh

# Create the RenderWindow, Renderer and Interactor
#
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 skin
ren1 SetBackground 1 1 1
renWin SetSize 500 500
eval ren1 SetBackground $slate_grey

[ren1 GetActiveCamera] SetPosition 98.3334 642.549 15 
[ren1 GetActiveCamera] SetFocalPoint 98.3334 100.372 15 
[ren1 GetActiveCamera] SetViewAngle 20
[ren1 GetActiveCamera] SetViewUp 0 0 -1

ren1 ResetCameraClippingRange

# render the image
#
iren SetUserMethod {wm deiconify .vtkInteract}

renWin Render

#renWin SetFileName "threshold.tcl.ppm"
#renWin SaveImageAsPPM

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