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package require vtk
package require vtkinteraction
# Create the RenderWindow, Renderer and both Actors
#
vtkRenderer ren1
vtkRenderWindow renWin
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
# create some points
#
vtkMath math
vtkPoints points
for {set i 0} {$i<50} {incr i 1} {
eval points InsertPoint $i [math Random 0 1] [math Random 0 1] [math Random 0 1]
}
vtkFloatArray scalars
for {set i 0} {$i<50} {incr i 1} {
eval scalars InsertValue $i [math Random 0 1]
}
vtkPolyData profile
profile SetPoints points
[profile GetPointData] SetScalars scalars
# triangulate them
#
vtkShepardMethod shepard
shepard SetInput profile
shepard SetModelBounds 0 1 0 1 .1 .5
# shepard SetMaximumDistance .1
shepard SetNullValue 1
shepard SetSampleDimensions 20 20 20
shepard Update
vtkDataSetMapper map
map SetInputConnection [shepard GetOutputPort]
vtkActor block
block SetMapper map
[block GetProperty] SetColor 1 0 0
# Add the actors to the renderer, set the background and size
#
ren1 AddActor block
ren1 SetBackground 1 1 1
renWin SetSize 400 400
ren1 ResetCamera
set cam1 [ren1 GetActiveCamera]
$cam1 Azimuth 160
$cam1 Elevation 30
$cam1 Zoom 1.5
ren1 ResetCameraClippingRange
renWin Render
# 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 .
set threshold 15
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