def update(self, *args):
if np.hypot(*self.ball.velocity) != 0:
perpendicular_velocity = -np.cross(self.ball.velocity, [0, 0, 1])
rotation_angle = -np.hypot(
*(self.ball.velocity)) * 2 / (config.ball_radius * np.pi)
transformation_matrix = physics.rotation_matrix(
perpendicular_velocity, rotation_angle)
self.label_offset = np.matmul(
self.label_offset, transformation_matrix)
if self.ball_type == BallType.Striped:
self.ball_stripe.update_stripe(transformation_matrix)
self.update_sprite()
self.ball.update()
def update(self, *args):
if np.hypot(*self.ball.velocity) != 0:
# updates label circle and number offset
perpendicular_velocity = -np.cross(self.ball.velocity, [0, 0, 1])
# angle formula is angle=((ballspeed*2)/(pi*r*2))*2
rotation_angle = -np.hypot(*(self.ball.velocity)) / config.ball_radius
transformation_matrix = physics.rotation_matrix(
perpendicular_velocity, rotation_angle)
self.label_offset = np.matmul(
self.label_offset, transformation_matrix)
if self.ball_type == BallType.Striped:
self.ball_stripe.update_stripe(transformation_matrix)
self.update_sprite()
self.ball.update()
