Несчастный Боб — горе в семье.

Код AS3:
public static function minAngle(from:Number, to:Number):Number
{
to = to % 360;
from = from % 360;
if(to < 0) to += 360;
if (from < 0) from += 360;
var cw:Number = to - from;
if (cw < 0) cw += 360;
var ccw:Number = from - to;
if (ccw < 0) ccw += 360;
return (cw < ccw ? cw : - ccw);
}