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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.
# Create a mace out of filters.
#
vtkSphereSource sphere
vtkConeSource cone
vtkGlyph3D glyph
glyph SetInputConnection [sphere GetOutputPort]
glyph SetSourceConnection [cone GetOutputPort]
glyph SetVectorModeToUseNormal
glyph SetScaleModeToScaleByVector
glyph SetScaleFactor 0.25
# The sphere and spikes are appended into a single polydata.
# This just makes things simpler to manage.
vtkAppendPolyData apd
apd AddInputConnection [glyph GetOutputPort]
apd AddInputConnection [sphere GetOutputPort]
vtkPolyDataMapper maceMapper
maceMapper SetInputConnection [apd GetOutputPort]
vtkLODActor maceActor
maceActor SetMapper maceMapper
maceActor VisibilityOn
# This portion of the code clips the mace with the vtkPlanes
# implicit function. The clipped region is colored green.
vtkPlane plane
vtkClipPolyData clipper
clipper SetInputConnection [apd GetOutputPort]
clipper SetClipFunction plane
clipper InsideOutOn
vtkPolyDataMapper selectMapper
selectMapper SetInputConnection [clipper GetOutputPort]
vtkLODActor selectActor
selectActor SetMapper selectMapper
[selectActor GetProperty] SetColor 0 1 0
selectActor VisibilityOff
selectActor SetScale 1.01 1.01 1.01
# 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
vtkImplicitPlaneWidget planeWidget
planeWidget SetInteractor iren
planeWidget SetPlaceFactor 1.25
planeWidget SetInputConnection [glyph GetOutputPort]
planeWidget PlaceWidget
planeWidget AddObserver InteractionEvent myCallback
ren1 AddActor maceActor
ren1 AddActor selectActor
# Add the actors to the renderer, set the background and size
#
ren1 SetBackground 1 1 1
renWin SetSize 300 300
ren1 SetBackground 0.1 0.2 0.4
# 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 .
proc myCallback {} {
planeWidget GetPlane plane
selectActor VisibilityOn
}
iren Start
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