Snap to angles other than right angles
If I have a circle centered at origin with a point attached to the circle's circumference, the point will snap to other points on the circle at multiples of pi/2 radians. Is there some way to make the point also snap to other angles? For example, if I want the point on the circumference to snap exactly to the point corresponding to 1 radian, how can I do this? I've put a fixed point on the circumference at 1 radian, but my traveling point won't snap to it.
Is such a thing possible?
I've attached the .ggb I'm working on for context.