/usr/share/vtk/Annotation/Tcl/TestText.tcl is in vtk-examples 5.8.0-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | # 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 scaled text actor.
# Set the text, font, justification, and properties (bold, italics, etc.).
vtkTextActor textActor
textActor SetTextScaleModeToProp
textActor SetDisplayPosition 90 50
textActor SetInput "This is a sphere"
# Set coordinates to match the old vtkScaledTextActor default value
[textActor GetPosition2Coordinate] SetCoordinateSystemToNormalizedViewport
[textActor GetPosition2Coordinate] SetValue 0.6 0.1
set tprop [textActor GetTextProperty]
$tprop SetFontSize 18
$tprop SetFontFamilyToArial
$tprop SetJustificationToCentered
$tprop BoldOn
$tprop ItalicOn
$tprop ShadowOn
$tprop SetColor 0 0 1
# 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 AddViewProp textActor
ren1 AddViewProp 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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