如何计算旋转轴上的点? [英] How to calculate a point on a rotated axis?

问题描述

如何在旋转轴上计算指定距离的点(X，Y)?我知道我希望点移动"沿哪个角度(以度为单位).

How can I calculate a point (X,Y) a specified distance away, on a rotated axis? I know what angle I'd like the point "moving" along (in degrees).

推荐答案

x = cos(a) * d
y = sin(a) * d

其中a是角度，d是距离.

where a is the angle and d is the distance.

如果三角函数的弧度为度的弧度，则必须除以180/pi来转换角度.

If the trigonometry functions takes radians intead of degrees, you have to convert the angle by dividing by 180/pi.

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