def __init__(self, x, y, angle=90, radius=20, step=60, time=1.0, color=Color(0)):
    self.x = x
    self.y = y
    self.angle = angle
    self.radius = radius
    self.step = step
    self.time = time
    self.color = color
def __init__(self, x, y, angle=90, radius=20, step=60, time=1.0, color=Color(0)):
    self.x = x
    self.y = y
    self.angle = angle
    self.radius = radius
    self.step = step
    self.time = time
    self.color = color