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package require vtk
package require vtkinteraction
package require vtktesting
# Now create the RenderWindow, Renderer and Interactor
#
vtkRenderer ren1
vtkRenderWindow renWin
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
vtkOBJReader cowReader
cowReader SetFileName "$VTK_DATA_ROOT/Data/Viewpoint/cow.obj"
vtkPlane plane
plane SetNormal 1 0 0
vtkClipPolyData cowClipper
cowClipper SetInputConnection [cowReader GetOutputPort]
cowClipper SetClipFunction plane
vtkPolyDataNormals cellNormals
cellNormals SetInputConnection [cowClipper GetOutputPort]
cellNormals ComputePointNormalsOn
cellNormals ComputeCellNormalsOn
vtkTransform reflect
reflect Scale -1 1 1
vtkTransformPolyDataFilter cowReflect
cowReflect SetTransform reflect
cowReflect SetInputConnection [cellNormals GetOutputPort]
vtkReverseSense cowReverse
cowReverse SetInputConnection [cowReflect GetOutputPort]
cowReverse ReverseNormalsOn
cowReverse ReverseCellsOff
vtkPolyDataMapper reflectedMapper
reflectedMapper SetInputConnection [cowReverse GetOutputPort]
vtkActor reflected
reflected SetMapper reflectedMapper
eval [reflected GetProperty] SetDiffuseColor $flesh
[reflected GetProperty] SetDiffuse .8
[reflected GetProperty] SetSpecular .5
[reflected GetProperty] SetSpecularPower 30
[reflected GetProperty] FrontfaceCullingOn
ren1 AddActor reflected
vtkPolyDataMapper cowMapper
cowMapper SetInputConnection [cowClipper GetOutputPort]
vtkActor cow
cow SetMapper cowMapper
ren1 AddActor cow
ren1 SetBackground .1 .2 .4
renWin SetSize 320 240
ren1 ResetCamera
[ren1 GetActiveCamera] SetViewUp 0 1 0
[ren1 GetActiveCamera] Azimuth 180
[ren1 GetActiveCamera] Dolly 1.75
ren1 ResetCameraClippingRange
iren Initialize
# 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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