在x或y轴上反射顶点后，如何恢复CCW缠绕顺序？

def is_ccw(vertices):
    """检查顶点是否为逆时针顺序"""
    n = len(vertices)
    area = 0
    for i in range(n):
        j = (i + 1) % n
        area += vertices[i][0] * vertices[j][1] - vertices[j][0] * vertices[i][1]
    return area > 0

def reflect_vertices(vertices, axis='x'):
    """在指定轴上反射顶点"""
    if axis == 'x':
        return [(x, -y) for x, y in vertices]
    elif axis == 'y':
        return [(-x, y) for x, y in vertices]
    else:
        raise ValueError("轴必须是'x'或'y'")

def restore_ccw(vertices, axis='x'):
    """恢复逆时针缠绕顺序"""
    reflected_vertices = reflect_vertices(vertices, axis)
    if not is_ccw(reflected_vertices):
        reflected_vertices.reverse()
    return reflected_vertices

def reflect_vertices_ccw(vertices, axis='x'):
    """在指定轴上反射顶点并保持逆时针顺序"""
    if axis == 'x':
        return [(x, -y) for x, y in vertices[::-1]]  # 反转后再反射
    elif axis == 'y':
        return [(-x, y) for x, y in vertices[::-1]]  # 反转后再反射
    else:
        raise ValueError("轴必须是'x'或'y'")