在Python中更正两点之间的角度

我有一个Python代码应用程序,它记录鼠标活动(按规则间隔记录的点,时间等待),然后处理数据以输出鼠标移动的角度(Y轴为0)和它移动的速度。

目前我的输出是东0度,南-90度,西180度,北90度,这不是我的预期输出。我不确定三角法或其他计算中是否有问题,所以希望对这方面的任何帮助。

i = 0
angles = []
speeds = []

#positions is an array of coordinates taken 0.1 seconds apart from each other

for point in positions:
    if i is not 0:
        pointY = 2500 - point[1]  #invert position of X and assign variable
        deltaX = point[0]-pointXP # difference is current pointX minus PointXPast
        deltaY = pointY-pointYP
        dist = math.sqrt(deltaX**2 + deltaY**2) #distance is the hypotenuse
        if dist is 0: #if the mouse has not moved
            continue
        speed = dist/timeWait # speed is distance/time
        angle = math.degrees(math.atan2(deltaY,deltaX)) #angle using Tan

        angles.append(angle)
        speeds.append(speed)

        pointXP = point[0]
        pointYP = pointY

    else:  #this is only for the first iteration
        i = 1 
        pointXP = point[0]
        pointYP = 2500 - point[1]
        continue

再次感谢您的帮助,特别是关于我的角度被关闭。谢谢。