code: def set_center(self, val):
      self.control_points.set_center(val)
      self.ellipse.center = val
  
imports: import numpy
  from vispy import app, scene
  from vispy.color import Color
label_desc: Use image node_id 2 for calling the EditEllipseVisual obj's underlying member method code with example usage: obj.set_center(val) without return types