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#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''
=========================================================================
Program: Visualization Toolkit
Module: TestNamedColorsIntegration.py
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================
'''
import sys
import vtk
import vtk.test.Testing
from vtk.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
class TestInteractorEventRecorder(vtk.test.Testing.vtkTest):
def testInteractorEventRecorder(self):
# Demonstrate how to use the vtkInteractorEventRecorder to play back some
# events.
# Create a mace out of filters.
#
sphere = vtk.vtkSphereSource()
cone = vtk.vtkConeSource()
glyph = vtk.vtkGlyph3D()
glyph.SetInputConnection(sphere.GetOutputPort())
glyph.SetSourceConnection(cone.GetOutputPort())
glyph.SetVectorModeToUseNormal()
glyph.SetScaleModeToScaleByVector()
glyph.SetScaleFactor(0.25)
# The sphere and spikes are appended into a single polydata. This just makes things
# simpler to manage.
apd = vtk.vtkAppendPolyData()
apd.AddInputConnection(glyph.GetOutputPort())
apd.AddInputConnection(sphere.GetOutputPort())
maceMapper = vtk.vtkPolyDataMapper()
maceMapper.SetInputConnection(apd.GetOutputPort())
maceActor = vtk.vtkLODActor()
maceActor.SetMapper(maceMapper)
maceActor.VisibilityOn()
# This portion of the code clips the mace with the vtkPlanes implicit function.
# The clipped region is colored green.
planes = vtk.vtkPlanes()
clipper = vtk.vtkClipPolyData()
clipper.SetInputConnection(apd.GetOutputPort())
clipper.SetClipFunction(planes)
clipper.InsideOutOn()
selectMapper = vtk.vtkPolyDataMapper()
selectMapper.SetInputConnection(clipper.GetOutputPort())
selectActor = vtk.vtkLODActor()
selectActor.SetMapper(selectMapper)
selectActor.GetProperty().SetColor(0, 1, 0)
selectActor.VisibilityOff()
selectActor.SetScale(1.01, 1.01, 1.01)
# Create the RenderWindow, Renderer and both Actors
#
ren = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren)
iRen = vtk.vtkRenderWindowInteractor()
iRen.SetRenderWindow(renWin);
#iren = vtk.vtkRenderWindowInteractor()
#iren.SetRenderWindow(renWin)
iRen.AddObserver("ExitEvent", sys.exit)
# The SetInteractor method is how 3D widgets are associated with the render
# window interactor. Internally, SetInteractor sets up a bunch of callbacks
# using the Command/Observer mechanism (AddObserver()).
ren.AddActor(maceActor)
ren.AddActor(selectActor)
# Add the actors to the renderer, set the background and size
#
ren.SetBackground(0.1, 0.2, 0.4)
renWin.SetSize(300, 300)
# This does the actual work: updates the vtkPlanes implicit function.
# This in turn causes the pipeline to update.
def SelectPolygons(widget, event_string):
'''
The callback takes two parameters.
Parameters:
widget - the object that generates the event.
event_string - the event name (which is a string).
'''
boxRep.GetPlanes(planes)
selectActor.VisibilityOn()
# Place the interactor initially. The input to a 3D widget is used to
# initially position and scale the widget. The EndInteractionEvent is
# observed which invokes the SelectPolygons callback.
boxRep = vtk.vtkBoxRepresentation()
boxRep.SetPlaceFactor(0.75)
boxRep.PlaceWidget(glyph.GetOutput().GetBounds())
boxWidget = vtk.vtkBoxWidget2()
boxWidget.SetInteractor(iRen)
boxWidget.SetRepresentation(boxRep)
boxWidget.AddObserver("EndInteractionEvent", SelectPolygons)
boxWidget.SetPriority(1)
# record events
recorder = vtk.vtkInteractorEventRecorder()
recorder.SetInteractor(iRen)
recorder.SetFileName(VTK_DATA_ROOT + "/Data/EventRecording.log")
# render the image
iRen.Initialize()
renWin.Render()
#recorder.Record()
recorder.Play()
recorder.Off()
# render and interact with data
renWin.Render()
img_file = "TestInteractorEventRecorder.png"
vtk.test.Testing.compareImage(iRen.GetRenderWindow(), vtk.test.Testing.getAbsImagePath(img_file), threshold=25)
vtk.test.Testing.interact()
if __name__ == "__main__":
vtk.test.Testing.main([(TestInteractorEventRecorder, 'test')])
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