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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()
# This example demonstrates the use of the linear extrusion filter and
# the USA state outline vtk dataset. It also tests the triangulation filter.
# Create the RenderWindow, Renderer and both Actors
ren1 = vtk.vtkRenderer()
renWin = vtk.vtkRenderWindow()
renWin.AddRenderer(ren1)
iren = vtk.vtkRenderWindowInteractor()
iren.SetRenderWindow(renWin)
# create pipeline - read data
#
reader = vtk.vtkPolyDataReader()
reader.SetFileName(VTK_DATA_ROOT + "/Data/usa.vtk")
# okay, now create some extrusion filters with actors for each US state
math = vtk.vtkMath()
i = 0
while i < 51:
idx = str(i)
exec("extractCell" + idx + " = vtk.vtkGeometryFilter()")
eval("extractCell" + idx).SetInputConnection(reader.GetOutputPort())
eval("extractCell" + idx).CellClippingOn()
eval("extractCell" + idx).SetCellMinimum(i)
eval("extractCell" + idx).SetCellMaximum(i)
exec("tf" + idx + " = vtk.vtkTriangleFilter()")
eval("tf" + idx).SetInputConnection(
eval("extractCell" + idx).GetOutputPort())
exec("extrude" + idx + " = vtk.vtkLinearExtrusionFilter()")
eval("extrude" + idx).SetInputConnection(
eval("tf" + idx).GetOutputPort())
eval("extrude" + idx).SetExtrusionType(1)
eval("extrude" + idx).SetVector(0, 0, 1)
eval("extrude" + idx).CappingOn()
eval("extrude" + idx).SetScaleFactor(math.Random(1, 10))
exec("mapper" + idx + " = vtk.vtkPolyDataMapper()")
eval("mapper" + idx).SetInputConnection(
eval("extrude" + idx).GetOutputPort())
exec("actor" + idx + " = vtk.vtkActor()")
eval("actor" + idx).SetMapper(eval("mapper" + idx))
eval("actor" + idx).GetProperty().SetColor(math.Random(0, 1),
math.Random(0, 1), math.Random(0, 1))
ren1.AddActor(eval("actor" + idx))
i += 1
ren1.SetBackground(1, 1, 1)
renWin.SetSize(500, 250)
cam1 = ren1.GetActiveCamera()
cam1.SetClippingRange(10.2299, 511.497)
cam1.SetPosition(-119.669, -25.5502, 79.0198)
cam1.SetFocalPoint(-115.96, 41.6709, 1.99546)
cam1.SetViewUp(-0.0013035, 0.753456, 0.657497)
# render the image
#
renWin.Render()
iren.Initialize()
#iren.Start()
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