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# This example demonstrates the use of 2D text.
#
# 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 sphere source, mapper, and actor
vtkSphereSource sphere
vtkPolyDataMapper sphereMapper
sphereMapper SetInputConnection [sphere GetOutputPort]
sphereMapper GlobalImmediateModeRenderingOn
vtkLODActor sphereActor
sphereActor SetMapper sphereMapper
# Create a text mapper.
vtkTextMapper textMapper
textMapper SetInput "This is a sphere"
# Set the text, font, justification, and text
# properties (bold, italics, etc.).
set tprop [textMapper GetTextProperty]
$tprop SetFontSize 18
$tprop SetFontFamilyToArial
$tprop SetJustificationToCentered
$tprop BoldOn
$tprop ItalicOn
$tprop ShadowOn
$tprop SetColor 0 0 1
# Create a scaled text actor. Set the position of the text.
vtkScaledTextActor textActor
textActor SetMapper textMapper
textActor SetDisplayPosition 90 50
# Create the Renderer, RenderWindow, RenderWindowInteractor
#
vtkRenderer ren1
vtkRenderWindow renWin
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
# Add the actors to the renderer; set the background and size; zoom in;
# and render.
#
ren1 AddActor2D textActor
ren1 AddActor sphereActor
ren1 SetBackground 1 1 1
renWin SetSize 250 125
ren1 ResetCamera
[ren1 GetActiveCamera] Zoom 1.5
renWin Render
# Set the user method (bound to key 'u')
iren AddObserver UserEvent {wm deiconify .vtkInteract}
# Withdraw the tk window
wm withdraw .
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