bool ps_arc (resource psdoc, float x, float y, float radius, float alpha, float beta)
bool ps_arc
Draws a portion of a circle with at middle point at (x, y). The arc starts at an angle of alpha and ends at an angle of beta. It is draw counterclockwise. The subpath added to the current path starts on the arc at angle alpha and ends on the arc at angle beta.
ps_arcn()