# This example demonstrates the use of vtkCubeAxesActor2D to indicate the
# position in space that the camera is currently viewing.
# The vtkCubeAxesActor2D draws axes on the bounding box of the data set and
# labels the axes with x-y-z coordinates.

#
# First we include the VTK Tcl packages which will make available
# all of the vtk commands to Tcl
#
package require vtk
package require vtkinteraction

# Create a vtkBYUReader and read in a data set.
#
vtkBYUReader fohe
    fohe SetGeometryFileName "$VTK_DATA_ROOT/Data/teapot.g"
# Create a vtkPolyDataNormals filter to calculate the normals of the data set.
vtkPolyDataNormals normals
    normals SetInputConnection [fohe GetOutputPort]
# Set up the associated mapper and actor.
vtkPolyDataMapper foheMapper
    foheMapper SetInputConnection [normals GetOutputPort]
vtkLODActor foheActor
    foheActor SetMapper foheMapper

# Create a vtkOutlineFilter to draw the bounding box of the data set.  Also
# create the associated mapper and actor.
vtkOutlineFilter outline
    outline SetInputConnection [normals GetOutputPort]
vtkPolyDataMapper mapOutline
    mapOutline SetInputConnection [outline GetOutputPort]
vtkActor outlineActor
    outlineActor SetMapper mapOutline
    [outlineActor GetProperty] SetColor 0 0 0

# Create a vtkCamera, and set the camera parameters.
vtkCamera camera
    camera SetClippingRange 1.60187 20.0842
    camera SetFocalPoint 0.21406 1.5 0
    camera SetPosition 8.3761 4.94858 4.12505
    camera SetViewUp 0.180325 0.549245 -0.815974

# Create a vtkLight, and set the light parameters.
vtkLight light
    light SetFocalPoint 0.21406 1.5 0
    light SetPosition 8.3761 4.94858 4.12505

# Create the Renderers.  Assign them the appropriate viewport coordinates,
# active camera, and light.
vtkRenderer ren1
    ren1 SetViewport 0 0 0.5 1.0
    ren1 SetActiveCamera camera
    ren1 AddLight light
vtkRenderer ren2
    ren2 SetViewport 0.5 0 1.0 1.0
    ren2 SetActiveCamera camera
    ren2 AddLight light

# Create the RenderWindow and RenderWindowInteractor.
vtkRenderWindow renWin
    renWin AddRenderer ren1
    renWin AddRenderer ren2
    renWin SetWindowName "VTK - Cube Axes"
    renWin SetSize 600 300
vtkRenderWindowInteractor iren
    iren SetRenderWindow renWin

# Add the actors to the renderer, and set the background.
#
ren1 AddViewProp foheActor
ren1 AddViewProp outlineActor
ren2 AddViewProp foheActor
ren2 AddViewProp outlineActor

ren1 SetBackground 0.1 0.2 0.4
ren2 SetBackground 0.1 0.2 0.4

# Create a text property for both cube axes
#
vtkTextProperty tprop
    tprop SetColor 1 1 1
    tprop ShadowOn

# Create a vtkCubeAxesActor2D.  Use the outer edges of the bounding box to
# draw the axes.  Add the actor to the renderer.
vtkCubeAxesActor2D axes
    axes SetInput [normals GetOutput]
    axes SetCamera [ren1 GetActiveCamera]
    axes SetLabelFormat "%6.4g"
    axes SetFlyModeToOuterEdges
    axes SetFontFactor 0.8
    axes SetAxisTitleTextProperty tprop
    axes SetAxisLabelTextProperty tprop
ren1 AddViewProp axes 

# Create a vtkCubeAxesActor2D.  Use the closest vertex to the camera to
# determine where to draw the axes.  Add the actor to the renderer.
vtkCubeAxesActor2D axes2
    axes2 SetViewProp foheActor
    axes2 SetCamera [ren2 GetActiveCamera]
    axes2 SetLabelFormat "%6.4g"
    axes2 SetFlyModeToClosestTriad
    axes2 SetFontFactor 0.8
    axes2 ScalingOff
    axes2 SetAxisTitleTextProperty tprop
    axes2 SetAxisLabelTextProperty tprop
ren2 AddViewProp axes2 

# Render
renWin Render

# Set the user method (bound to key 'u')
#
iren AddObserver UserEvent {wm deiconify .vtkInteract}
iren Initialize

# Set up a check for aborting rendering.
proc TkCheckAbort {} {
  set foo [renWin GetEventPending]
  if {$foo != 0} {renWin SetAbortRender 1}
}
renWin AddObserver AbortCheckEvent {TkCheckAbort}

# Withdraw the default tk window.
wm withdraw .