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# A simple example of a three-dimensional noise pattern.
# first we load in the standard vtk packages into tcl
package require vtk
package require vtkinteraction
package require vtktesting
vtkPerlinNoise perlin
perlin SetFrequency 2 1.25 1.5
perlin SetPhase 0 0 0
vtkSampleFunction sample
sample SetImplicitFunction perlin
sample SetSampleDimensions 65 65 20
sample ComputeNormalsOff
vtkContourFilter surface
surface SetInputConnection [sample GetOutputPort]
surface SetValue 0 0.0
vtkPolyDataMapper mapper
mapper SetInputConnection [surface GetOutputPort]
mapper ScalarVisibilityOff
vtkActor actor
actor SetMapper mapper
eval [actor GetProperty] SetColor 0.2 0.4 0.6
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 actor
ren1 SetBackground 1 1 1
renWin SetSize 300 300
ren1 ResetCamera
[ren1 GetActiveCamera] Dolly 1.35
ren1 ResetCameraClippingRange
iren Initialize
# 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 .
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