package gs.easing {
    public class Quad {
        public static function easeIn (t:Number, b:Number, c:Number, d:Number):Number {
            return c*(t/=d)*t + b;
        }
        public static function easeOut (t:Number, b:Number, c:Number, d:Number):Number {
            return -c *(t/=d)*(t-2) + b;
        }
        public static function easeInOut (t:Number, b:Number, c:Number, d:Number):Number {
            if ((t/=d/2) < 1) return c/2*t*t + b;
            return -c/2 * ((--t)*(t-2) - 1) + b;
        }
    }
}