text: import matplotlib.pyplot as plt
  from matplotlib.patches import Polygon
  from Interactive_Plot import PolygonInteractor
  
  
  if __name__ == '__main__':
  	theta = np.arange(0, 2*np.pi, 0.1)
  	r = 1.5
  
  	xs = r * np.cos(theta)
  	ys = r * np.sin(theta)
  
  	poly = Polygon(np.column_stack([xs, ys]), animated=True)
  
  	fig, ax = plt.subplots()
  	ax.add_patch(poly)
  	p = PolygonInteractor(ax, poly)
  
  	ax.set_title('Click and drag a point to move it')
  	ax.set_xlim((-2, 2))
  	ax.set_ylim((-2, 2))
  	plt.show()