I'm on a quest, to find an elegant way to convert from rectangular
coordinates to polar coordinates.

What I have, is a pair of 8 bit signed values, for the X and Y coordinates.
I have the radius, which wasn't as ugly as I thought it would be.
Finding the angle in any sort of elegant manner is proving elusive.
Worse, the only manner i know to calculate it is A=csc(X/radius), which
ignores the Y value completely, and has poor resolution where X is near it's
maxima and minima.

Anybody know of a way to crack this nut?
TIA!