code: def on_mouse_release(self, event):
      self.pressed = False
  
file_path: vispy/examples/demo/gloo/skybox.py
imports: import numpy
  from math import cos, sin, pi
  from vispy import app, gloo
  from vispy.gloo import gl
  from vispy.io import read_png, load_data_file
  from vispy.util.transforms import perspective
label_desc: Use image node_id 5 for calling the Canvas obj's underlying member method code with example usage: obj.on_mouse_release(event) without return types