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69 lines
2.2 KiB
69 lines
2.2 KiB
2 years ago
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package require vtk
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package require vtkinteraction
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# Demonstrate how to use the vtkBoxWidget to translate, scale, and rotate actors.
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# The basic idea is that the box widget controls an actor's transform. A callback
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# which modifies the transform is invoked as the box widget is manipulated.
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# Start by creating some simple geometry; in this case a mace.
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vtkSphereSource sphere
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vtkConeSource cone
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vtkGlyph3D glyph
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glyph SetInputConnection [sphere GetOutputPort]
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glyph SetSource [cone GetOutput]
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glyph SetVectorModeToUseNormal
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glyph SetScaleModeToScaleByVector
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glyph SetScaleFactor 0.25
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vtkAppendPolyData appendData
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appendData AddInput [glyph GetOutput]
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appendData AddInput [sphere GetOutput]
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vtkPolyDataMapper maceMapper
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maceMapper SetInputConnection [appendData GetOutputPort]
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vtkLODActor maceActor
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maceActor SetMapper maceMapper
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maceActor VisibilityOn
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# Create the RenderWindow, Renderer and both Actors
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#
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vtkRenderer ren1
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vtkRenderWindow renWin
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renWin AddRenderer ren1
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vtkRenderWindowInteractor iren
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iren SetRenderWindow renWin
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# The box widget observes the events invoked by the render window interactor.
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# These events come from user interaction in the render window.
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vtkBoxWidget boxWidget
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boxWidget SetInteractor iren
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boxWidget SetPlaceFactor 1.25
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# Add the actors to the renderer, set the background and window size.
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#
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ren1 AddActor maceActor
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ren1 SetBackground 0.1 0.2 0.4
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renWin SetSize 300 300
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# Place the interactor initially. The actor is used to place and scale
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# the interactor. An observer is added to the box widget to watch for
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# interaction events. This event is captured and used to set the
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# transformation matrix of the actor.
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boxWidget SetProp3D maceActor
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boxWidget PlaceWidget
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boxWidget AddObserver InteractionEvent TransformActor
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# Support the "u" keypress user event (pops up a Tcl interpreter).
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#
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iren AddObserver UserEvent {wm deiconify .vtkInteract}
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iren Initialize
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# prevent the tk window from showing up then start the event loop
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wm withdraw .
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# As the box widget is interacted with, it produces a transformation
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# matrix that is set on the actor.
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vtkTransform t
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proc TransformActor {} {
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boxWidget GetTransform t
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maceActor SetUserTransform t
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}
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