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package require vtk
package require vtkinteraction
# create some random points in the unit cube centered at (.5,.5,.5)
#
vtkMath math
vtkPoints points
for {set i 0} {$i<25} {incr i 1} {
eval points InsertPoint $i [math Random 0 1] [math Random 0 1] [math Random 0 1]
}
vtkPolyData profile
profile SetPoints points
# triangulate them
#
vtkDelaunay3D del1
del1 SetInput profile
del1 BoundingTriangulationOn
del1 SetTolerance 0.01
del1 SetAlpha 0.2
del1 BoundingTriangulationOff
vtkShrinkFilter shrink
shrink SetInputConnection [del1 GetOutputPort]
shrink SetShrinkFactor 0.9
vtkDataSetMapper map
map SetInputConnection [shrink GetOutputPort]
vtkActor triangulation
triangulation SetMapper map
[triangulation GetProperty] SetColor 1 0 0
# 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 triangulation
ren1 SetBackground 1 1 1
renWin SetSize 250 250
renWin Render
set cam1 [ren1 GetActiveCamera]
$cam1 Zoom 1.5
# 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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