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# This example shows how to use decimation to reduce a polygonal mesh. We also
# use mesh smoothing and generate surface normals to give a pleasing result.
#
package require vtk
package require vtkinteraction
# We start by reading some data that was originally captured from
# a Cyberware laser digitizing system.
#
vtkPolyDataReader fran
fran SetFileName "$VTK_DATA_ROOT/Data/fran_cut.vtk"
# We want to preserve topology (not let any cracks form). This may limit
# the total reduction possible, which we have specified at 90%.
#
vtkDecimatePro deci
deci SetInputConnection [fran GetOutputPort]
deci SetTargetReduction 0.9
deci PreserveTopologyOn
vtkPolyDataNormals normals
normals SetInputConnection [deci GetOutputPort]
normals FlipNormalsOn
vtkPolyDataMapper franMapper
franMapper SetInputConnection [normals GetOutputPort]
vtkActor franActor
franActor SetMapper franMapper
eval [franActor GetProperty] SetColor 1.0 0.49 0.25
# Create the RenderWindow, Renderer and both Actors
#
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 franActor
ren1 SetBackground 1 1 1
renWin SetSize 250 250
# render the image
#
iren AddObserver UserEvent {wm deiconify .vtkInteract}
vtkCamera cam1
cam1 SetClippingRange 0.0475572 2.37786
cam1 SetFocalPoint 0.052665 -0.129454 -0.0573973
cam1 SetPosition 0.327637 -0.116299 -0.256418
cam1 SetViewUp -0.0225386 0.999137 0.034901
ren1 SetActiveCamera cam1
iren Initialize
# prevent the tk window from showing up then start the event loop
wm withdraw .
iren Start
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