# append multiple displaced spheres into an RGB image.
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" }

source vtkImageInclude.tcl

# Image pipeline

vtkImageEllipsoidSource sphere1
sphere1 SetCenter 95 100 0
sphere1 SetRadius 70 70 70

vtkImageEllipsoidSource sphere2
sphere2 SetCenter 161 100 0
sphere2 SetRadius 70 70 70 

vtkImageLogic xor
xor SetInput1 [sphere1 GetOutput]
xor SetInput2 [sphere2 GetOutput]
xor SetOutputTrueValue 150
xor SetOperationToXor

vtkImageViewer viewer
viewer SetInput [xor GetOutput]
viewer SetColorWindow 255
viewer SetColorLevel 127.5

# make interface
source WindowLevelInterface.tcl