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#!/usr/bin/env python
import vtk
from vtk.test import Testing
from vtk.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
def GetRGBColor(colorName):
'''
Return the red, green and blue components for a
color as doubles.
'''
rgb = [0.0, 0.0, 0.0] # black
vtk.vtkNamedColors().GetColorRGB(colorName, rgb)
return rgb
# Test the quadric decimation LOD actor
#
ren1 = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren1)
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
# pipeline stuff
#
sphere = vtk.vtkSphereSource()
sphere.SetPhiResolution(150)
sphere.SetThetaResolution(150)
plane = vtk.vtkPlaneSource()
plane.SetXResolution(150)
plane.SetYResolution(150)
mapper = vtk.vtkPolyDataMapper()
mapper.SetInputConnection(sphere.GetOutputPort())
mapper.SetInputConnection(plane.GetOutputPort())
actor = vtk.vtkQuadricLODActor()
actor.SetMapper(mapper)
actor.DeferLODConstructionOff()
actor.GetProperty().SetRepresentationToWireframe()
actor.GetProperty().SetDiffuseColor(GetRGBColor('tomato'))
actor.GetProperty().SetDiffuse(.8)
actor.GetProperty().SetSpecular(.4)
actor.GetProperty().SetSpecularPower(30)
# Add the actors to the renderer, set the background and size
#
ren1.AddActor(actor)
ren1.SetBackground(1, 1, 1)
renWin.SetSize(300, 300)
iren.Initialize()
#iren.Start()
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