code: def f(t, size, a=np.pi / 3, thickness=20):  # noqa D103
      w, h = size
      v = thickness * np.array([np.cos(a), np.sin(a)])[::-1]
      center = [int(t * w / duration), h / 2]
      return biGradientScreen(size, center, v, 0.6, 0.0)
  
label_desc: Use image node_id 1 for calling a global function with example usage: f(t, size, a, thickness) and returns: biGradientScreen