vtkCaptionWidgetTest.py

#!/usr/bin/env python

# This example demonstrates how to use the vtkSphereWidget to control
# the position of a light.

import vtk
from vtk.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()

ren1 = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren1)

iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)

# Create a test pipeline
ss = vtk.vtkSphereSource()
mapper = vtk.vtkDataSetMapper()
mapper.SetInputData(ss.GetOutput())
actor = vtk.vtkActor()
actor.SetMapper(mapper)

# Create the widget and its representation
rep = vtk.vtkCaptionActor2D()
rep.SetCaption("This is a test\nAnd it has two lines")
rep.GetTextActor().GetTextProperty().SetJustificationToCentered()
rep.GetTextActor().GetTextProperty().SetVerticalJustificationToCentered()

widget = vtk.vtkCaptionWidget()
widget.SetInteractor(iren)
widget.SetCaptionActor2D(rep)

# Add the actors to the renderer, set the background and size
ren1.AddActor(actor)
ren1.SetBackground(0.1, 0.2, 0.4)
renWin.SetSize(300, 300)

# record events
#recorder = vtk.vtkInteractorEventRecorder()
#recorder.SetInteractor(iren)
#recorder.SetFileName("record.log")

# render the image

iren.Initialize()
renWin.Render()
widget.On()
iren.Start()