recipe-578381.py 文件源码

def __init__(self, x, y):
        if len(x) != len(y):
            raise IndexError('x and y must be equally sized.')
        self.x = np.asfarray(x)
        self.y = np.asfarray(y)
        # Closes the polygon if were open
        x1, y1 = x[0], y[0]
        xn, yn = x[-1], y[-1]
        if x1 != xn or y1 != yn:
            self.x = np.concatenate((self.x, [x1]))
            self.y = np.concatenate((self.y, [y1]))
        # Anti-clockwise coordinates
        if _det(self.x, self.y) < 0:
            self.x = self.x[::-1]
            self.y = self.y[::-1]