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package require vtk
package require vtktesting
#
# Demonstrate the use of implicit selection loop as well as closest point
# connectivity
#
# create pipeline
#
vtkSphereSource sphere
sphere SetRadius 1
sphere SetPhiResolution 100
sphere SetThetaResolution 100
vtkPoints selectionPoints
selectionPoints InsertPoint 0 0.07325 0.8417 0.5612
selectionPoints InsertPoint 1 0.07244 0.6568 0.7450
selectionPoints InsertPoint 2 0.1727 0.4597 0.8850
selectionPoints InsertPoint 3 0.3265 0.6054 0.7309
selectionPoints InsertPoint 4 0.5722 0.5848 0.5927
selectionPoints InsertPoint 5 0.4305 0.8138 0.4189
vtkImplicitSelectionLoop loop
loop SetLoop selectionPoints
vtkExtractGeometry extract
extract SetInputConnection [sphere GetOutputPort]
extract SetImplicitFunction loop
vtkConnectivityFilter connect
connect SetInputConnection [extract GetOutputPort]
connect SetExtractionModeToClosestPointRegion
eval connect SetClosestPoint [selectionPoints GetPoint 0]
vtkDataSetMapper clipMapper
clipMapper SetInputConnection [connect GetOutputPort]
vtkProperty backProp
eval backProp SetDiffuseColor $tomato
vtkActor clipActor
clipActor SetMapper clipMapper
eval [clipActor GetProperty] SetColor $peacock
clipActor SetBackfaceProperty backProp
# Create graphics stuff
#
vtkRenderer ren1
vtkRenderWindow renWin
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
# Add the actors to the renderer, set the background and size
#
ren1 AddActor clipActor
ren1 SetBackground 1 1 1
ren1 ResetCamera
[ren1 GetActiveCamera] Azimuth 30
[ren1 GetActiveCamera] Elevation 30
[ren1 GetActiveCamera] Dolly 1.2
ren1 ResetCameraClippingRange
renWin SetSize 400 400
renWin Render
# render the image
#
iren AddObserver UserEvent {wm deiconify .vtkInteract}
# prevent the tk window from showing up then start the event loop
wm withdraw .
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