geodesic_classes_271.py 文件源码

def usphericalise(self, x, y, z):
        if y == 0.0:
            if x > 0:
                theta = 0.0
            else:
                theta = self.a180
        elif x == 0.0:
            if y > 0:
                theta = self.a90
            else:
                theta = self.a270
        else:
            theta = atan(y / x)

        if x < 0.0 and y < 0.0:
            theta = theta + self.a180
        elif x < 0.0 and y > 0.0:
            theta = theta + self.a180
        u = theta
        return u