code: def plot_ants_plane(off_screen=False, notebook=None):
      
  
      # load and shrink airplane
      airplane = vtki.PolyData(planefile)
      airplane.points /= 10
      # pts = airplane.points # gets pointer to array
      # pts /= 10  # shrink
  
      # rotate and translate ant so it is on the plane
      ant = vtki.PolyData(antfile)
      ant.rotate_x(90)
      ant.translate([90, 60, 15])
  
      # Make a copy and add another ant
      ant_copy = ant.copy()
      ant_copy.translate([30, 0, -10])
  
      # Create plotting object
      plotter = vtki.Plotter(off_screen=off_screen, notebook=notebook)
      plotter.add_mesh(ant, 'r')
      plotter.add_mesh(ant_copy, 'b')
  
      # Add airplane mesh and make the color equal to the Y position
      plane_scalars = airplane.points[:, 1]
      plotter.add_mesh(airplane, scalars=plane_scalars, stitle='Plane Y\nLocation')
      plotter.add_text('Ants and Plane Example')
      plotter.plot()
docs: Demonstrate how to create a plot class to plot multiple meshes while
      adding scalars and text.
  
      Plot two ants and airplane