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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
# Create the RenderWindow, Renderer and both Actors
#
ren1 = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren1)
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
# create a semi-cylinder
#
line = vtk.vtkLineSource()
line.SetPoint1(0, 1, 0)
line.SetPoint2(0, 1, 2)
line.SetResolution(10)
lineSweeper = vtk.vtkRotationalExtrusionFilter()
lineSweeper.SetResolution(20)
lineSweeper.SetInputConnection(line.GetOutputPort())
lineSweeper.SetAngle(270)
bump = vtk.vtkBrownianPoints()
bump.SetInputConnection(lineSweeper.GetOutputPort())
warp = vtk.vtkWarpVector()
warp.SetInputConnection(bump.GetOutputPort())
warp.SetScaleFactor(.2)
smooth = vtk.vtkWindowedSincPolyDataFilter()
smooth.SetInputConnection(warp.GetOutputPort())
smooth.SetNumberOfIterations(20)
smooth.BoundarySmoothingOn()
smooth.SetFeatureAngle(120)
smooth.SetEdgeAngle(90)
smooth.SetPassBand(0.1)
normals = vtk.vtkPolyDataNormals()
normals.SetInputConnection(smooth.GetOutputPort())
cylMapper = vtk.vtkPolyDataMapper()
cylMapper.SetInputConnection(normals.GetOutputPort())
cylActor = vtk.vtkActor()
cylActor.SetMapper(cylMapper)
cylActor.GetProperty().SetInterpolationToGouraud()
cylActor.GetProperty().SetInterpolationToFlat()
cylActor.GetProperty().SetColor(GetRGBColor('beige'))
originalMapper = vtk.vtkPolyDataMapper()
originalMapper.SetInputConnection(bump.GetOutputPort())
originalActor = vtk.vtkActor()
originalActor.SetMapper(originalMapper)
originalActor.GetProperty().SetInterpolationToFlat()
cylActor.GetProperty().SetColor(GetRGBColor('tomato'))
# Add the actors to the renderer, set the background and size
#
ren1.AddActor(cylActor)
# ren1 AddActor originalActor
ren1.SetBackground(1, 1, 1)
renWin.SetSize(200, 300)
camera = vtk.vtkCamera()
camera.SetClippingRange(0.576398, 28.8199)
camera.SetFocalPoint(0.0463079, -0.0356571, 1.01993)
camera.SetPosition(-2.47044, 2.39516, -3.56066)
camera.SetViewUp(0.607296, -0.513537, -0.606195)
ren1.SetActiveCamera(camera)
# render the image
#
iren.Initialize()
#iren.Start()
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