/usr/share/vtk/GUI/Python/ProbeWithPointWidget.py is in vtk-examples 5.8.0-17.5.
This file is owned by root:root, with mode 0o755.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 | #!/usr/bin/env python
# This example demonstrates how to use the vtkPointWidget to probe a
# dataset and then color the probed point (represented as a cone) as
# per the probed value and orient it as per the vector.
import vtk
from vtk.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
# Start by loading some data.
pl3d = vtk.vtkPLOT3DReader()
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.
pointWidget = vtk.vtkPointWidget()
pointWidget.SetInput(pl3d.GetOutput())
pointWidget.AllOff()
pointWidget.PlaceWidget()
point = vtk.vtkPolyData()
pointWidget.GetPolyData(point)
probe = vtk.vtkProbeFilter()
probe.SetInput(point)
probe.SetSource(pl3d.GetOutput())
# create glyph
cone = vtk.vtkConeSource()
cone.SetResolution(16)
glyph = vtk.vtkGlyph3D()
glyph.SetInputConnection(probe.GetOutputPort())
glyph.SetSource(cone.GetOutput())
glyph.SetVectorModeToUseVector()
glyph.SetScaleModeToDataScalingOff()
glyph.SetScaleFactor(pl3d.GetOutput().GetLength()*0.1)
glyphMapper = vtk.vtkPolyDataMapper()
glyphMapper.SetInputConnection(glyph.GetOutputPort())
glyphActor = vtk.vtkActor()
glyphActor.SetMapper(glyphMapper)
glyphActor.VisibilityOff()
# An outline is shown for context.
outline = vtk.vtkStructuredGridOutlineFilter()
outline.SetInputConnection(pl3d.GetOutputPort())
outlineMapper = vtk.vtkPolyDataMapper()
outlineMapper.SetInputConnection(outline.GetOutputPort())
outlineActor = vtk.vtkActor()
outlineActor.SetMapper(outlineMapper)
# Create the RenderWindow, Renderer and both Actors
ren = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren)
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
# Actually set the color and orientation of the probe.
def BeginInteraction(obj, event):
global point, glyphActor
obj.GetPolyData(point)
glyphActor.VisibilityOn()
def ProbeData(obj, event):
obj.GetPolyData(point)
# Associate the line widget with the interactor
pointWidget.SetInteractor(iren)
pointWidget.AddObserver("EnableEvent", BeginInteraction)
pointWidget.AddObserver("StartInteractionEvent", BeginInteraction)
pointWidget.AddObserver("InteractionEvent", ProbeData)
# Add the actors to the renderer, set the background and size
ren.AddActor(outlineActor)
ren.AddActor(glyphActor)
ren.SetBackground(1, 1, 1)
renWin.SetSize(300, 300)
ren.SetBackground(0.1, 0.2, 0.4)
cam1 = ren.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)
iren.Initialize()
renWin.Render()
iren.Start()
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