/**
* 
* @module Tweens
* @submodule Easing 
* 
*/

module Kiwi.Animations.Tweens.Easing {

	/**
	*
	* @class Bounce
	* @namespace Kiwi.Animations.Tweens.Easing
	*
	*/
	export class Bounce {

		/**
		* The type of object that this is.
		* @method objType
		* @return {String} "Bounce"
		* @public
		*/
		public objType() {
			return "Bounce";
		}

		/** 
		* 
		* @method In
		* @param k {Any}
		* @return {Number} 
		* @static
		* @public
		*/
		public static In(k) {

			return 1 - Kiwi.Animations.Tweens.Easing.Bounce.Out(1 - k);

		}

		/** 
		* 
		* @method Out
		* @param k {Any}
		* @return {Number}
		* @static
		* @public
		*/
		public static Out(k) {

			if (k < (1 / 2.75))
			{
				return 7.5625 * k * k;
			}
			else if (k < (2 / 2.75))
			{
				return 7.5625 * (k -= (1.5 / 2.75)) * k + 0.75;
			}
			else if (k < (2.5 / 2.75))
			{
				return 7.5625 * (k -= (2.25 / 2.75)) * k + 0.9375;
			}
			else
			{
				return 7.5625 * (k -= (2.625 / 2.75)) * k + 0.984375;
			}

		}

		/** 
		* 
		* @method InOut
		* @param {Any} k
		* @return {Number}
		* @static
		* @public
		*/
		public static InOut(k) {

			if (k < 0.5) return Kiwi.Animations.Tweens.Easing.Bounce.In(k * 2) * 0.5;
			return Kiwi.Animations.Tweens.Easing.Bounce.Out(k * 2 - 1) * 0.5 + 0.5;

		}

	}

}