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package require vtk
package require vtkinteraction
package require vtktesting
# create pipeline
#
vtkMultiBlockPLOT3DReader pl3d
pl3d SetXYZFileName "$VTK_DATA_ROOT/Data/combxyz.bin"
pl3d SetQFileName "$VTK_DATA_ROOT/Data/combq.bin"
pl3d SetScalarFunctionNumber 100
pl3d SetVectorFunctionNumber 202
pl3d Update
set output [[pl3d GetOutput] GetBlock 0]
# create a crazy implicit function
set center [$output GetCenter]
vtkSphere sphere
eval sphere SetCenter $center
sphere SetRadius 2.0
vtkSphere sphere2
sphere2 SetCenter [expr [lindex $center 0] + 4.0] [lindex $center 1] \
[lindex $center 2]
sphere2 SetRadius 4.0
vtkImplicitBoolean bool
bool SetOperationTypeToUnion
bool AddFunction sphere
bool AddFunction sphere2
# clip the structured grid to produce a tetrahedral mesh
vtkClipDataSet clip
clip SetInputData $output
clip SetClipFunction bool
clip InsideOutOn
vtkGeometryFilter gf
gf SetInputConnection [clip GetOutputPort]
vtkPolyDataMapper clipMapper
clipMapper SetInputConnection [gf GetOutputPort]
vtkActor clipActor
clipActor SetMapper clipMapper
vtkStructuredGridOutlineFilter outline
outline SetInputData $output
vtkPolyDataMapper outlineMapper
outlineMapper SetInputConnection [outline GetOutputPort]
vtkActor outlineActor
outlineActor SetMapper outlineMapper
# 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 clipActor
ren1 AddActor outlineActor
ren1 SetBackground 1 1 1
renWin SetSize 250 250
ren1 SetBackground 0.1 0.2 0.4
set cam1 [ren1 GetActiveCamera]
$cam1 SetClippingRange 3.95297 50
$cam1 SetFocalPoint 8.88908 0.595038 29.3342
$cam1 SetPosition -12.3332 31.7479 41.2387
$cam1 SetViewUp 0.060772 -0.319905 0.945498
iren Initialize
# render the image
#
iren AddObserver UserEvent {wm deiconify .vtkInteract}
renWin Render
# prevent the tk window from showing up then start the event loop
wm withdraw .
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