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package require vtk
package require vtkinteraction
# this is a tcl version of plate vibration
vtkRenderer ren1
vtkRenderWindow renWin
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
# read a vtk file
#
vtkPolyDataReader plate
plate SetFileName "$VTK_DATA_ROOT/Data/plate.vtk"
plate SetVectorsName "mode8"
vtkWarpVector warp
warp SetInputConnection [plate GetOutputPort]
warp SetScaleFactor 0.5
vtkPolyDataNormals normals
normals SetInputConnection [warp GetOutputPort]
vtkVectorDot color
color SetInputConnection [normals GetOutputPort]
vtkLookupTable lut
lut SetNumberOfColors 256
lut Build
for {set i 0} {$i<128} {incr i 1} {
eval lut SetTableValue $i [expr (128.0-$i)/128.0] [expr (128.0-$i)/128.0] [expr (128.0-$i)/128.0] 1
}
for {set i 128} {$i<256} {incr i 1} {
eval lut SetTableValue $i [expr ($i-128.0)/128.0] [expr ($i-128.0)/128.0] [expr ($i-128.0)/128.0] 1
}
vtkDataSetMapper plateMapper
plateMapper SetInputConnection [color GetOutputPort]
plateMapper SetLookupTable lut
plateMapper SetScalarRange -1 1
vtkActor plateActor
plateActor SetMapper plateMapper
# Add the actors to the renderer, set the background and size
#
ren1 AddActor plateActor
ren1 SetBackground 1 1 1
renWin SetSize 250 250
[ren1 GetActiveCamera] SetPosition 13.3991 14.0764 9.97787
[ren1 GetActiveCamera] SetFocalPoint 1.50437 0.481517 4.52992
[ren1 GetActiveCamera] SetViewAngle 30
[ren1 GetActiveCamera] SetViewUp -0.120861 0.458556 -0.880408
[ren1 GetActiveCamera] SetClippingRange 12.5724 26.8374
# render the image
#
iren AddObserver UserEvent {wm deiconify .vtkInteract}
iren Initialize
# prevent the tk window from showing up then start the event loop
wm withdraw .
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