如何在Python 3中计算两点之间的角度？

Question

我想计算两点之间的角度。例如，假设我正在制作一个游戏，我想要一把枪指向鼠标光标，我得到将枪旋转到该角度所需的角度。

Answer 1

使用math库的atan2功能，

p1 = (2,2)
p2 = (-1,5)

# Difference in x coordinates
dx = p2[0] - p1[0]

# Difference in y coordinates
dy = p2[1] - p1[1]

# Angle between p1 and p2 in radians
theta = math.atan2(dy, dx)