/usr/share/vtk/GUI/Tcl/ProbeWithPointWidget.tcl is in vtk-examples 5.8.0-17.5.
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 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | package require vtk
package require vtkinteraction
package require vtktesting
# This example demonstrates how to use the vtkPlaneWidget to probe
# a dataset and then generate contours on the probed data.
# Start by loading some data.
#
vtkPLOT3DReader pl3d
pl3d SetXYZFileName "$VTK_DATA_ROOT/Data/combxyz.bin"
pl3d SetQFileName "$VTK_DATA_ROOT/Data/combq.bin"
pl3d SetScalarFunctionNumber 100
pl3d SetVectorFunctionNumber 202
pl3d Update
# The plane widget is used probe the dataset.
#
vtkPointWidget pointWidget
pointWidget SetInput [pl3d GetOutput]
pointWidget AllOff
pointWidget PlaceWidget
vtkPolyData point
pointWidget GetPolyData point
vtkProbeFilter probe
probe SetInput point
probe SetSource [pl3d GetOutput]
# create glyph
vtkConeSource cone
cone SetResolution 16
vtkGlyph3D glyph
glyph SetInputConnection [probe GetOutputPort]
glyph SetSource [cone GetOutput]
glyph SetVectorModeToUseVector
glyph SetScaleModeToDataScalingOff
glyph SetScaleFactor [expr [[pl3d GetOutput] GetLength] * 0.1]
vtkPolyDataMapper glyphMapper
glyphMapper SetInputConnection [glyph GetOutputPort]
vtkActor glyphActor
glyphActor SetMapper glyphMapper
glyphActor VisibilityOff
# An outline is shown for context.
vtkStructuredGridOutlineFilter outline
outline SetInputConnection [pl3d GetOutputPort]
vtkPolyDataMapper outlineMapper
outlineMapper SetInputConnection [outline GetOutputPort]
vtkActor outlineActor
outlineActor SetMapper outlineMapper
# Create the RenderWindow, Renderer and both Actors
#
vtkRenderer ren1
vtkRenderWindow renWin
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
# Associate the line widget with the interactor
pointWidget SetInteractor iren
pointWidget AddObserver EnableEvent BeginInteraction
pointWidget AddObserver StartInteractionEvent BeginInteraction
pointWidget AddObserver InteractionEvent ProbeData
# Add the actors to the renderer, set the background and size
#
ren1 AddActor outlineActor
ren1 AddActor glyphActor
ren1 SetBackground 1 1 1
renWin SetSize 300 300
ren1 SetBackground 0.1 0.2 0.4
set cam1 [ren1 GetActiveCamera]
$cam1 SetClippingRange 3.95297 50
$cam1 SetFocalPoint 9.71821 0.458166 29.3999
$cam1 SetPosition 2.7439 -37.3196 38.7167
$cam1 SetViewUp -0.16123 0.264271 0.950876
# render the image
#
iren AddObserver UserEvent {wm deiconify .vtkInteract}
renWin Render
# Prevent the tk window from showing up then start the event loop.
wm withdraw .
# Actually generate contour lines.
proc BeginInteraction {} {
pointWidget GetPolyData point
glyphActor VisibilityOn
}
proc ProbeData {} {
pointWidget GetPolyData point
}
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