public  static final double signed(double angle)
    {
        angle = normalizeToFullAngle(angle);
        if (angle > Math.PI)
        {
            return angle - FULL_CIRCLE;
        }
        else
        {
            return angle;
        }
    }
public static final double signed ( double angle ) { angle = normalizeToFullAngle ( angle ) ; if ( angle > Math . PI ) { return angle - FULL_CIRCLE ; } else { return angle ; } }
Convert full angle to signed angle -180 - 180. 340 -&gt; -20
@param angle
@return