PCBobjects.py 文件源码

def arcMidPoint(self, prev_vertex, vertex, angle):
        if len(prev_vertex) == 3:
            [x1, y1, z1] = prev_vertex
        else:
            [x1, y1] = prev_vertex

        if len(vertex) == 3:
            [x2, y2, z2] = vertex
        else:
            [x2, y2] = vertex

        angle = radians(angle / 2)
        basic_angle = atan2(y2 - y1, x2 - x1) - pi / 2
        shift = (1 - cos(angle)) * hypot(y2 - y1, x2 - x1) / 2 / sin(angle)
        midpoint = [(x2 + x1) / 2 + shift * cos(basic_angle), (y2 + y1) / 2 + shift * sin(basic_angle)]

        return midpoint