old_contents: #!/usr/bin/env python
  
  import vtk
  
  def main():
      colors = vtk.vtkNamedColors()
      # Create points on an XY grid with random Z coordinate
      points = vtk.vtkPoints()
      randomSequence = vtk.vtkMinimalStandardRandomSequence()
      randomSequence.SetSeed(1)
      for x in range (0, 10):
          for y in range (0, 10): 
      	   rValue = randomSequence.GetValue()
  	       randomSequence.Next()
             points.InsertNextPoint(x, y, rValue)
        
      # Add the grid points to a polydata object
      polydata = vtk.vtkPolyData()
      polydata.SetPoints(points)
      
      glyphFilter = vtk.vtkVertexGlyphFilter()
      glyphFilter.SetInputData(polydata)
      glyphFilter.Update()
      
      # Create a mapper and actor
      pointsMapper = vtk.vtkPolyDataMapper()
      pointsMapper.SetInputConnection(glyphFilter.GetOutputPort())
      
      pointsActor = vtk.vtkActor()
      pointsActor.SetMapper(pointsMapper)
      pointsActor.GetProperty().SetPointSize(3)
      pointsActor.GetProperty().SetColor(colors.GetColor3d("Red"))
      
      # Triangulate the grid points
      delaunay = vtk.vtkDelaunay2D()
      delaunay.SetInputData(polydata)
      delaunay.Update()
      
      # Create a mapper and actor
      triangulatedMapper = vtk.vtkPolyDataMapper()
      triangulatedMapper.SetInputConnection(delaunay.GetOutputPort())
      
      triangulatedActor = vtk.vtkActor()
      triangulatedActor.SetMapper(triangulatedMapper)
      
      # Create a renderer, render window, and interactor
      renderer = vtk.vtkRenderer()
      renderWindow = vtk.vtkRenderWindow()
      renderWindow.AddRenderer(renderer)
      renderWindowInteractor = vtk.vtkRenderWindowInteractor()
      renderWindowInteractor.SetRenderWindow(renderWindow)
      
      # Add the actor to the scene
      renderer.AddActor(pointsActor)
      renderer.AddActor(triangulatedActor)
      renderer.SetBackground(colors.GetColor3d("Green")) # Background color green
      
      # Render and interact
      renderWindow.Render()
      renderWindowInteractor.Start()
  
  if __name__ == '__main__':
      main()
  
new_contents: #!/usr/bin/env python
  
  import vtk
  
  def main():
      colors = vtk.vtkNamedColors()
      # Create points on an XY grid with random Z coordinate
      points = vtk.vtkPoints()
      randomSequence = vtk.vtkMinimalStandardRandomSequence()
      randomSequence.SetSeed(1)
      for x in range (0, 10):
          for y in range (0, 10): 
      	   rValue = randomSequence.GetValue()
  	   randomSequence.Next()
             points.InsertNextPoint(x, y, rValue)
        
      # Add the grid points to a polydata object
      polydata = vtk.vtkPolyData()
      polydata.SetPoints(points)
      
      glyphFilter = vtk.vtkVertexGlyphFilter()
      glyphFilter.SetInputData(polydata)
      glyphFilter.Update()
      
      # Create a mapper and actor
      pointsMapper = vtk.vtkPolyDataMapper()
      pointsMapper.SetInputConnection(glyphFilter.GetOutputPort())
      
      pointsActor = vtk.vtkActor()
      pointsActor.SetMapper(pointsMapper)
      pointsActor.GetProperty().SetPointSize(3)
      pointsActor.GetProperty().SetColor(colors.GetColor3d("Red"))
      
      # Triangulate the grid points
      delaunay = vtk.vtkDelaunay2D()
      delaunay.SetInputData(polydata)
      delaunay.Update()
      
      # Create a mapper and actor
      triangulatedMapper = vtk.vtkPolyDataMapper()
      triangulatedMapper.SetInputConnection(delaunay.GetOutputPort())
      
      triangulatedActor = vtk.vtkActor()
      triangulatedActor.SetMapper(triangulatedMapper)
      
      # Create a renderer, render window, and interactor
      renderer = vtk.vtkRenderer()
      renderWindow = vtk.vtkRenderWindow()
      renderWindow.AddRenderer(renderer)
      renderWindowInteractor = vtk.vtkRenderWindowInteractor()
      renderWindowInteractor.SetRenderWindow(renderWindow)
      
      # Add the actor to the scene
      renderer.AddActor(pointsActor)
      renderer.AddActor(triangulatedActor)
      renderer.SetBackground(colors.GetColor3d("Green")) # Background color green
      
      # Render and interact
      renderWindow.Render()
      renderWindowInteractor.Start()
  
  if __name__ == '__main__':
      main()
  
subject: Update TriangulateTerrainMap.py