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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 vtk
import vtk.test.Testing
from vtk.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
class TestBoxWidget(vtk.test.Testing.vtkTest):
def testBoxWidget(self):
# Demonstrate how to use the vtkBoxWidget.
# This script uses a 3D box widget to define a "clipping box" to clip some
# simple geometry (a mace). Make sure that you hit the "W" key to activate the widget.
# create a sphere source
#
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)
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()
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);
boxWidget = vtk.vtkBoxWidget()
boxWidget.SetInteractor(iRen)
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)
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).
'''
boxWidget, selectActor
boxWidget.GetPlanes(planes)
selectActor.VisibilityOn()
# place the interactor initially
boxWidget.SetInputConnection(glyph.GetOutputPort())
boxWidget.PlaceWidget()
boxWidget.AddObserver("EndInteractionEvent", SelectPolygons)
# render and interact with data
renWin.Render()
img_file = "TestBoxWidget.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([(TestBoxWidget, 'test')])
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