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package require vtk
package require vtkinteraction
vtkPoints tetraPoints
tetraPoints SetNumberOfPoints 4
tetraPoints InsertPoint 0 0 0 0
tetraPoints InsertPoint 1 1 0 0
tetraPoints InsertPoint 2 .5 1 0
tetraPoints InsertPoint 3 .5 .5 1
vtkTetra aTetra
[aTetra GetPointIds] SetId 0 0
[aTetra GetPointIds] SetId 1 1
[aTetra GetPointIds] SetId 2 2
[aTetra GetPointIds] SetId 3 3
vtkUnstructuredGrid aTetraGrid
aTetraGrid Allocate 1 1
aTetraGrid InsertNextCell [aTetra GetCellType] [aTetra GetPointIds]
aTetraGrid SetPoints tetraPoints
vtkSubdivideTetra sub
sub SetInputData aTetraGrid
vtkShrinkFilter shrinker
shrinker SetInputConnection [sub GetOutputPort]
vtkDataSetMapper mapper
mapper SetInputConnection [shrinker GetOutputPort]
vtkActor actor
actor SetMapper mapper
[actor GetProperty] SetColor 0.7400 0.9900 0.7900
# define graphics stuff
vtkRenderer ren1
vtkRenderWindow renWin
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
ren1 AddActor actor
ren1 SetBackground 0.1 0.2 0.4
renWin SetSize 300 300
set cam1 [ren1 GetActiveCamera]
$cam1 SetClippingRange 0.183196 9.15979
$cam1 SetFocalPoint 0.579471 0.462507 0.283392
$cam1 SetPosition -1.04453 0.345281 -0.556222
$cam1 SetViewUp 0.197321 0.843578 -0.499441
ren1 ResetCameraClippingRange
renWin Render
# render the image
#
iren AddObserver UserEvent {wm deiconify .vtkInteract}
iren Initialize
wm withdraw .
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