code: def on_mouse_move(self, event):
      self.last_mouse = event.pos
      self.rotate_arrows(np.array(event.pos))
  
file_path: vispy/examples/basics/visuals/windbarb_quiver.py
imports: import itertools
  import numpy
  from vispy import app
  from vispy.visuals import WindbarbVisual
  from vispy.visuals.transforms import NullTransform
label_desc: Use image node_id 5 for calling the Canvas obj's underlying member method code with example usage: obj.on_mouse_move(event) without return types