EaseInSine = 1,EaseOutSine = 2,EaseInOutSine = 3,
EaseInQuad = 4,EaseOutQuad = 5,EaseInOutQuad = 6,
EaseInCubic = 7,EaseOutCubic = 8,EaseInOutCubic = 9,
EaseInQuart = 10,EaseOutQuart = 11,EaseInOutQuart = 12,
EaseInQuint = 13,EaseOutQuint = 14,EaseInOutQuint = 15,
EaseInExpo = 16,EaseOutExpo = 17,EaseInOutExpo = 18,
EaseInCirc = 19,EaseOutCirc = 20,EaseInOutCirc = 21,
EaseInBounce = 28,EaseOutBounce = 29,EaseInOutBounce = 30,
EaseType 效果
http://www.robertpenner.com/easing/easing_demo.html