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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
vtkParticleReader reader
reader SetFileName "$VTK_DATA_ROOT/Data/Particles.raw"
reader SetDataByteOrderToBigEndian
vtkPolyDataMapper mapper
mapper SetInputConnection [reader GetOutputPort]
mapper SetScalarRange 4 9
mapper SetPiece 1
mapper SetNumberOfPieces 2
vtkActor actor
actor SetMapper mapper
[actor GetProperty] SetPointSize 2.5
# Add the actors to the renderer, set the background and size
#
ren1 AddActor actor
ren1 SetBackground 0 0 0
renWin SetSize 200 200
# Get handles to some useful objects
#
iren AddObserver UserEvent {wm deiconify .vtkInteract}
iren Initialize
renWin Render
# prevent the tk window from showing up then start the event loop
wm withdraw .
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