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192 lines
5.5 KiB
192 lines
5.5 KiB
# This example shows how to align a set of objects together using the Procrustes algorithm.
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#
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# We make three ellipsoids by distorting and translating a sphere and then align them together,
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# using the different modes of Procrustes alignment: rigid-body, similarity and affine.
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#
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package require vtk
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package require vtkinteraction
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vtkSphereSource sphere
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# make two copies of the shape and distort them a little
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vtkTransform transform1
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transform1 Translate 0.2 0.1 0.3
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transform1 Scale 1.3 1.1 0.8
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vtkTransform transform2
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transform2 Translate 0.3 0.7 0.1
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transform2 Scale 1.0 0.1 1.8
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vtkTransformPolyDataFilter transformer1
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transformer1 SetInputConnection [sphere GetOutputPort]
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transformer1 SetTransform transform1
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vtkTransformPolyDataFilter transformer2
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transformer2 SetInputConnection [sphere GetOutputPort]
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transformer2 SetTransform transform2
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# map these three shapes into the first renderer
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vtkPolyDataMapper map1a
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map1a SetInputConnection [sphere GetOutputPort]
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vtkActor Actor1a
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Actor1a SetMapper map1a
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[Actor1a GetProperty] SetDiffuseColor 1.0000 0.3882 0.2784
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vtkPolyDataMapper map1b
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map1b SetInputConnection [transformer1 GetOutputPort]
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vtkActor Actor1b
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Actor1b SetMapper map1b
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[Actor1b GetProperty] SetDiffuseColor 0.3882 1.0000 0.2784
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vtkPolyDataMapper map1c
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map1c SetInputConnection [transformer2 GetOutputPort]
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vtkActor Actor1c
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Actor1c SetMapper map1c
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[Actor1c GetProperty] SetDiffuseColor 0.3882 0.2784 1.0000
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# -- align the shapes using Procrustes (using SetModeToRigidBody) --
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vtkProcrustesAlignmentFilter procrustes1
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procrustes1 SetNumberOfInputs 3
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procrustes1 SetInput 0 [sphere GetOutput]
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procrustes1 SetInput 1 [transformer1 GetOutput]
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procrustes1 SetInput 2 [transformer2 GetOutput]
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[procrustes1 GetLandmarkTransform] SetModeToRigidBody
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# map the aligned shapes into the second renderer
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vtkPolyDataMapper map2a
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map2a SetInput [procrustes1 GetOutput 0]
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vtkActor Actor2a
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Actor2a SetMapper map2a
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[Actor2a GetProperty] SetDiffuseColor 1.0000 0.3882 0.2784
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vtkPolyDataMapper map2b
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map2b SetInput [procrustes1 GetOutput 1]
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vtkActor Actor2b
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Actor2b SetMapper map2b
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[Actor2b GetProperty] SetDiffuseColor 0.3882 1.0000 0.2784
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vtkPolyDataMapper map2c
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map2c SetInput [procrustes1 GetOutput 2]
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vtkActor Actor2c
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Actor2c SetMapper map2c
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[Actor2c GetProperty] SetDiffuseColor 0.3882 0.2784 1.0000
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# -- align the shapes using Procrustes (using SetModeToSimilarity (default)) --
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vtkProcrustesAlignmentFilter procrustes2
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procrustes2 SetNumberOfInputs 3
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procrustes2 SetInput 0 [sphere GetOutput]
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procrustes2 SetInput 1 [transformer1 GetOutput]
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procrustes2 SetInput 2 [transformer2 GetOutput]
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# map the aligned shapes into the third renderer
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vtkPolyDataMapper map3a
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map3a SetInput [procrustes2 GetOutput 0]
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vtkActor Actor3a
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Actor3a SetMapper map3a
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[Actor3a GetProperty] SetDiffuseColor 1.0000 0.3882 0.2784
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vtkPolyDataMapper map3b
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map3b SetInput [procrustes2 GetOutput 1]
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vtkActor Actor3b
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Actor3b SetMapper map3b
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[Actor3b GetProperty] SetDiffuseColor 0.3882 1.0000 0.2784
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vtkPolyDataMapper map3c
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map3c SetInput [procrustes2 GetOutput 2]
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vtkActor Actor3c
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Actor3c SetMapper map3c
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[Actor3c GetProperty] SetDiffuseColor 0.3882 0.2784 1.0000
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# -- align the shapes using Procrustes (using SetModeToAffine) --
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vtkProcrustesAlignmentFilter procrustes3
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procrustes3 SetNumberOfInputs 3
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procrustes3 SetInput 0 [sphere GetOutput]
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procrustes3 SetInput 1 [transformer1 GetOutput]
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procrustes3 SetInput 2 [transformer2 GetOutput]
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[procrustes3 GetLandmarkTransform] SetModeToAffine
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# map the aligned shapes into the fourth renderer
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vtkPolyDataMapper map4a
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map4a SetInput [procrustes3 GetOutput 0]
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vtkActor Actor4a
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Actor4a SetMapper map4a
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[Actor4a GetProperty] SetDiffuseColor 1.0000 0.3882 0.2784
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vtkPolyDataMapper map4b
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map4b SetInput [procrustes3 GetOutput 1]
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vtkActor Actor4b
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Actor4b SetMapper map4b
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[Actor4b GetProperty] SetDiffuseColor 0.3882 1.0000 0.2784
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vtkPolyDataMapper map4c
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map4c SetInput [procrustes3 GetOutput 2]
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vtkActor Actor4c
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Actor4c SetMapper map4c
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[Actor4c GetProperty] SetDiffuseColor 0.3882 0.2784 1.0000
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# Create the RenderWindow and its four Renderers
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vtkRenderer ren1
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vtkRenderer ren2
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vtkRenderer ren3
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vtkRenderer ren4
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vtkRenderWindow renWin
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renWin AddRenderer ren1
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renWin AddRenderer ren2
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renWin AddRenderer ren3
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renWin AddRenderer ren4
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renWin SetSize 400 100
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vtkRenderWindowInteractor iren
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iren SetRenderWindow renWin
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# Add the actors to the renderer
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ren1 AddActor Actor1a
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ren1 AddActor Actor1b
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ren1 AddActor Actor1c
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ren2 AddActor Actor2a
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ren2 AddActor Actor2b
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ren2 AddActor Actor2c
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ren3 AddActor Actor3a
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ren3 AddActor Actor3b
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ren3 AddActor Actor3c
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ren4 AddActor Actor4a
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ren4 AddActor Actor4b
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ren4 AddActor Actor4c
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# set the properties of the renderers
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ren1 SetBackground 1 1 1
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ren1 SetViewport 0.0 0.0 0.25 1.0
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[ren1 GetActiveCamera] SetPosition 1 -1 0
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ren1 ResetCamera
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ren2 SetBackground 1 1 1
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ren2 SetViewport 0.25 0.0 0.5 1.0
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[ren2 GetActiveCamera] SetPosition 1 -1 0
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ren2 ResetCamera
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ren3 SetBackground 1 1 1
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ren3 SetViewport 0.5 0.0 0.75 1.0
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[ren3 GetActiveCamera] SetPosition 1 -1 0
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ren3 ResetCamera
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ren4 SetBackground 1 1 1
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ren4 SetViewport 0.75 0.0 1.0 1.0
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[ren4 GetActiveCamera] SetPosition 1 -1 0
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ren4 ResetCamera
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# render the image
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#
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iren AddObserver UserEvent {wm deiconify .vtkInteract}
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renWin Render
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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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