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package require vtk
package require vtkinteraction
#
# All Plot3D vector functions
#
# Create the RenderWindow, Renderer and both Actors
#
vtkRenderWindow renWin
vtkRenderer ren1
ren1 SetBackground .8 .8 .2
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
set vectorLabels "Velocity Vorticity Momentum Pressure_Gradient"
set vectorFunctions "200 201 202 210"
vtkCamera camera
vtkLight light
# All text actors will share the same text prop
vtkTextProperty textProp
textProp SetFontSize 10
textProp SetFontFamilyToArial
textProp SetColor .3 1 1
set i 0
foreach vectorFunction $vectorFunctions {
vtkPLOT3DReader pl3d$vectorFunction
pl3d$vectorFunction SetXYZFileName "$VTK_DATA_ROOT/Data/bluntfinxyz.bin"
pl3d$vectorFunction SetQFileName "$VTK_DATA_ROOT/Data/bluntfinq.bin"
pl3d$vectorFunction SetVectorFunctionNumber [expr int($vectorFunction)]
pl3d$vectorFunction Update
vtkStructuredGridGeometryFilter plane$vectorFunction
plane$vectorFunction SetInputConnection [pl3d$vectorFunction GetOutputPort]
plane$vectorFunction SetExtent 25 25 0 100 0 100
vtkHedgeHog hog$vectorFunction
hog$vectorFunction SetInputConnection [plane$vectorFunction GetOutputPort]
set maxnorm [[[[pl3d$vectorFunction GetOutput] GetPointData] GetVectors] GetMaxNorm]
hog$vectorFunction SetScaleFactor [expr 1.0 / $maxnorm]
vtkPolyDataMapper mapper$vectorFunction
mapper$vectorFunction SetInputConnection [hog$vectorFunction GetOutputPort]
vtkActor actor$vectorFunction
actor$vectorFunction SetMapper mapper$vectorFunction
vtkRenderer ren$vectorFunction
ren$vectorFunction SetBackground 0.5 .5 .5
ren$vectorFunction SetActiveCamera camera
ren$vectorFunction AddLight light
renWin AddRenderer ren$vectorFunction
ren$vectorFunction AddActor actor$vectorFunction
vtkTextMapper textMapper$vectorFunction
textMapper$vectorFunction SetInput [lindex $vectorLabels $i]
textMapper$vectorFunction SetTextProperty textProp
vtkActor2D text$vectorFunction
text$vectorFunction SetMapper textMapper$vectorFunction
text$vectorFunction SetPosition 2 5
if { [info command "rtExMath"] == ""} {
ren$vectorFunction AddActor2D text$vectorFunction
}
incr i
}
#
# now layout renderers
set column 1
set row 1
set deltaX [expr 1.0/2.0]
set deltaY [expr 1.0/2.0]
foreach vectorFunction $vectorFunctions {
ren${vectorFunction} SetViewport [expr ($column - 1) * $deltaX + ($deltaX * .05)] [expr ($row - 1) * $deltaY + ($deltaY*.05)] [expr $column * $deltaX - ($deltaX * .05)] [expr $row * $deltaY - ($deltaY * .05)]
incr column
if { $column > 2 } {set column 1; incr row}
}
camera SetViewUp 1 0 0
camera SetFocalPoint 0 0 0
camera SetPosition .4 -.5 -.75
ren200 ResetCamera
camera Dolly 1.25
ren200 ResetCameraClippingRange
ren201 ResetCameraClippingRange
ren202 ResetCameraClippingRange
ren210 ResetCameraClippingRange
eval light SetPosition [camera GetPosition]
eval light SetFocalPoint [camera GetFocalPoint]
renWin SetSize 350 350
renWin Render
iren Initialize
# render the image
#
iren AddObserver UserEvent {wm deiconify .vtkInteract}
# prevent the tk window from showing up then start the event loop
wm withdraw .
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