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" }

# this is a tcl version of the Mace example
# get the interactor ui
source $VTK_TCL/vtkInt.tcl

# Create the RenderWindow, Renderer and both Actors
#
vtkRenderer ren1
vtkRenderWindow renWin
    renWin AddRenderer ren1
vtkRenderer ren2
    renWin AddRenderer ren2
vtkRenderWindowInteractor iren
    iren SetRenderWindow renWin

# create a sphere source and actor
#
vtkSphereSource sphere
vtkPolyDataMapper   sphereMapper
    sphereMapper SetInput [sphere GetOutput]
vtkActor sphereActor
    sphereActor SetMapper sphereMapper

# create the spikes using a cone source and the sphere source
#
vtkConeSource cone
vtkGlyph3D glyph
    glyph SetInput [sphere GetOutput]
    glyph SetSource [cone GetOutput]
    glyph SetVectorModeToUseNormal
    glyph SetScaleModeToScaleByVector
    glyph SetScaleFactor 0.25
vtkPolyDataMapper spikeMapper
    spikeMapper SetInput [glyph GetOutput]
vtkActor spikeActor
    spikeActor SetMapper spikeMapper

# Add the actors to the renderer, set the background and size
#
ren1 AddActor sphereActor
ren1 AddActor spikeActor
ren1 SetBackground 0.1 0.2 0.4
ren1 SetViewport 0 0 0.5 1
ren2 AddActor sphereActor
ren2 AddActor spikeActor
ren2 SetBackground 0.1 0.4 0.2
ren2 SetViewport 0.5 0 1 1
renWin SetSize 500 500

# render the image
#
iren SetUserMethod {wm deiconify .vtkInteract}
iren Initialize
set cam1 [ren1 GetActiveCamera]
set cam2 [ren2 GetActiveCamera]
$cam1 SetWindowCenter -1.01 0
$cam2 SetWindowCenter 1.01 0

renWin Render
#renWin SetFileName OffAxis.tcl.ppm
#renWin SaveImageAsPPM

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


