def __init__(self, **kwargs): Coordinate.__init__(self, **kwargs) Motion.__init__(self, **kwargs) #长度 self.length = kwargs['length'] middle = kwargs['middle'] #中间点，middle=0为圆 self.middle = (middle, self.length / 2) #源点 self.source = (0, 0) #目标点 if middle: self.target = (0, self.length) else: self.target = self.source #圆弧的圆心 if middle: self.center = Geometry.circle_center(self.source, self.target, self.middle) else: self.center = self.middle #半径 self.radius = Geometry.distance(self.source, self.center) #角度 center_x, center_y = self.center if middle > 0: self.angle = 360 - 2 * Geometry.acos(center_x / self.radius) elif middle < 0: self.angle = 2 * Geometry.acos(center_x / self.radius) else: self.angle = 360 #距离 self.distance = Geometry.radian(self.angle) * self.radius #上一个点 self.last_step = self.source
