00001 class tweens.robertpenner.easing.Back {
00002 static function easeIn (t:Number, b:Number, c:Number, d:Number, s:Number):Number {
00003 if (s == undefined) s = 1.70158;
00004 return c*(t/=d)*t*((s+1)*t - s) + b;
00005 }
00006 static function easeOut (t:Number, b:Number, c:Number, d:Number, s:Number):Number {
00007 if (s == undefined) s = 1.70158;
00008 return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
00009 }
00010 static function easeInOut (t:Number, b:Number, c:Number, d:Number, s:Number):Number {
00011 if (s == undefined) s = 1.70158;
00012 if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
00013 return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
00014 }
00015 static function easeOutIn (t:Number, b:Number, c:Number, d:Number, s:Number):Number {
00016 if (s == undefined) s = 1.70158;
00017 if ((t/=d/2) < 1) return c/2*(--t*t*(((s*=(1.525))+1)*t + s) + 1) + b;
00018 return c/2*(--t*t*(((s*=(1.525))+1)*t - s) + 1) + b;
00019 }
00020
00021 }
1.5.2