VTK/Examples/Python/Animation

import vtk
 
class vtkTimerCallback():
   def __init__(self):
       self.timer_count = 0
 
   def execute(self,obj,event):
       print self.timer_count
       self.actor.SetPosition(self.timer_count, self.timer_count,0);
       iren = obj
       iren.GetRenderWindow().Render()
       self.timer_count += 1
 
 
def main():
   #Create a sphere
   sphereSource = vtk.vtkSphereSource()
   sphereSource.SetCenter(0.0, 0.0, 0.0)
   sphereSource.SetRadius(5)
 
   #Create a mapper and actor
   mapper = vtk.vtkPolyDataMapper()
   mapper.SetInputConnection(sphereSource.GetOutputPort())
   actor = vtk.vtkActor()
   actor.SetMapper(mapper)
   prop = actor.GetProperty()
 
   # Setup a renderer, render window, and interactor
   renderer = vtk.vtkRenderer()
   renderWindow = vtk.vtkRenderWindow()
   #renderWindow.SetWindowName("Test")
 
   renderWindow.AddRenderer(renderer);
   renderWindowInteractor = vtk.vtkRenderWindowInteractor()
   renderWindowInteractor.SetRenderWindow(renderWindow)
 
   #Add the actor to the scene
   renderer.AddActor(actor)
   renderer.SetBackground(1,1,1) # Background color white
 
   #Render and interact
   renderWindow.Render()
 
   # Initialize must be called prior to creating timer events.
   renderWindowInteractor.Initialize()
 
   # Sign up to receive TimerEvent
   cb = vtkTimerCallback()
   cb.actor = actor
   renderWindowInteractor.AddObserver('TimerEvent', cb.execute)
   timerId = renderWindowInteractor.CreateRepeatingTimer(100);
 
   #start the interaction and timer
   renderWindowInteractor.Start()
 
 
if __name__ == '__main__':
   main()