Changeset 45

Timestamp:

04/05/08 00:06:45 (8 months ago)

Author:

gak

Message:

Files:

muckaround/cython-getting-started-tutorial/circles.py

r44	r45
81	81	continue
82	82
83		#
	83	# Bounce!
	84	rel_pos_x = a.x - b.x
	85	rel_pos_y = a.y - b.y
	86	pos_angle = math.atan2(rel_pos_y, rel_pos_x)
	87	mag = (math.hypot(a.dx, a.dy) + math.hypot(b.dx, b.dy)) / 2
	88	a.dx = math.cos(pos_angle) * mag
	89	a.dy = math.sin(pos_angle) * mag
	90	b.dx = -math.cos(pos_angle) * mag
	91	b.dy = -math.sin(pos_angle) * mag
84	92
85	93	def render(self):