You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
94 lines
2.5 KiB
94 lines
2.5 KiB
package require vtk
|
|
package require vtkinteraction
|
|
package require vtktesting
|
|
|
|
# This example demonstrates how to use the vtkPlaneWidget to probe
|
|
# a dataset and then generate contours on the probed data.
|
|
|
|
# Start by loading some data.
|
|
#
|
|
vtkPLOT3DReader 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
|
|
|
|
# The plane widget is used probe the dataset.
|
|
#
|
|
vtkPlaneWidget planeWidget
|
|
planeWidget SetInput [pl3d GetOutput]
|
|
planeWidget NormalToXAxisOn
|
|
planeWidget SetResolution 20
|
|
planeWidget SetRepresentationToOutline
|
|
planeWidget PlaceWidget
|
|
vtkPolyData plane
|
|
planeWidget GetPolyData plane
|
|
|
|
vtkProbeFilter probe
|
|
probe SetInput plane
|
|
probe SetSource [pl3d GetOutput]
|
|
|
|
vtkPolyDataMapper contourMapper
|
|
contourMapper SetInputConnection [probe GetOutputPort]
|
|
eval contourMapper SetScalarRange [[pl3d GetOutput] GetScalarRange]
|
|
vtkActor contourActor
|
|
contourActor SetMapper contourMapper
|
|
contourActor VisibilityOff
|
|
|
|
# An outline is shown for context.
|
|
vtkStructuredGridOutlineFilter outline
|
|
outline SetInputConnection [pl3d GetOutputPort]
|
|
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
|
|
|
|
# Associate the line widget with the interactor
|
|
|
|
planeWidget SetInteractor iren
|
|
planeWidget AddObserver EnableEvent BeginInteraction
|
|
planeWidget AddObserver StartInteractionEvent BeginInteraction
|
|
planeWidget AddObserver InteractionEvent ProbeData
|
|
|
|
# Add the actors to the renderer, set the background and size
|
|
#
|
|
ren1 AddActor outlineActor
|
|
ren1 AddActor contourActor
|
|
|
|
ren1 SetBackground 1 1 1
|
|
renWin SetSize 300 300
|
|
ren1 SetBackground 0.1 0.2 0.4
|
|
|
|
set cam1 [ren1 GetActiveCamera]
|
|
$cam1 SetClippingRange 3.95297 50
|
|
$cam1 SetFocalPoint 9.71821 0.458166 29.3999
|
|
$cam1 SetPosition 2.7439 -37.3196 38.7167
|
|
$cam1 SetViewUp -0.16123 0.264271 0.950876
|
|
|
|
# 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 .
|
|
|
|
# Actually generate contour lines.
|
|
proc BeginInteraction {} {
|
|
planeWidget GetPolyData plane
|
|
contourActor VisibilityOn
|
|
}
|
|
|
|
proc ProbeData {} {
|
|
planeWidget GetPolyData plane
|
|
}
|
|
|
|
|