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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
ren1 = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren1)
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
# create a sphere source and actor
#
sphere = vtk.vtkSphereSource()
sphereMapper = vtk.vtkPolyDataMapper()
sphereMapper.SetInputConnection(sphere.GetOutputPort())
sphereActor = vtk.vtkLODActor()
sphereActor.SetMapper(sphereMapper)
sphereActor.GetProperty().SetDiffuseColor(GetRGBColor('banana'))
sphereActor.GetProperty().SetSpecular(.4)
sphereActor.GetProperty().SetSpecularPower(20)
# create the spikes using a cone source and the sphere source
#
cone = vtk.vtkConeSource()
cone.SetResolution(20)
glyph = vtk.vtkGlyph3D()
glyph.SetInputConnection(sphere.GetOutputPort())
glyph.SetSourceConnection(cone.GetOutputPort())
glyph.SetVectorModeToUseNormal()
glyph.SetScaleModeToScaleByVector()
glyph.SetScaleFactor(0.25)
spikeMapper = vtk.vtkPolyDataMapper()
spikeMapper.SetInputConnection(glyph.GetOutputPort())
spikeActor = vtk.vtkLODActor()
spikeActor.SetMapper(spikeMapper)
spikeActor.GetProperty().SetDiffuseColor(GetRGBColor('tomato'))
spikeActor.GetProperty().SetSpecular(.4)
spikeActor.GetProperty().SetSpecularPower(20)
# Add the actors to the renderer, set the background and size
#
ren1.AddActor(sphereActor)
ren1.AddActor(spikeActor)
ren1.SetBackground(0.1, 0.2, 0.4)
renWin.SetSize(300, 300)
# render the image
#
ren1.ResetCamera()
cam1 = ren1.GetActiveCamera()
cam1.Zoom(1.4)
cam1.Azimuth(30)
cam1.Elevation(30)
renWin.Render()
iren.FlyTo(ren1, 0.37723, 0.154699, 0.204326)
#iren.Start()
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