(function (factory){
if(typeof define==="function"&&define.amd){
define(['jquery'], function ($){
return factory($);
});
}else if(typeof module==="object"&&typeof module.exports==="object"){
exports=factory(require('jquery'));
}else{
factory(jQuery);
}})(function($){
if(typeof $.easing!=='undefined'){
$.easing['jswing']=$.easing['swing'];
}
var pow=Math.pow,
sqrt=Math.sqrt,
sin=Math.sin,
cos=Math.cos,
PI=Math.PI,
c1=1.70158,
c2=c1 * 1.525,
c3=c1 + 1,
c4=(2 * PI) / 3,
c5=(2 * PI) / 4.5;
function bounceOut(x){
var n1=7.5625,
d1=2.75;
if(x < 1/d1){
return n1*x*x;
}else if(x < 2/d1){
return n1*(x-=(1.5/d1))*x + .75;
}else if(x < 2.5/d1){
return n1*(x-=(2.25/d1))*x + .9375;
}else{
return n1*(x-=(2.625/d1))*x + .984375;
}}
$.extend($.easing,
{
def: 'easeOutQuad',
swing: function (x){
return $.easing[$.easing.def](x);
},
easeInQuad: function (x){
return x * x;
},
easeOutQuad: function (x){
return 1 -(1 - x) *(1 - x);
},
easeInOutQuad: function (x){
return x < 0.5 ?
2 * x * x :
1 - pow(-2 * x + 2, 2) / 2;
},
easeInCubic: function (x){
return x * x * x;
},
easeOutCubic: function (x){
return 1 - pow(1 - x, 3);
},
easeInOutCubic: function (x){
return x < 0.5 ?
4 * x * x * x :
1 - pow(-2 * x + 2, 3) / 2;
},
easeInQuart: function (x){
return x * x * x * x;
},
easeOutQuart: function (x){
return 1 - pow(1 - x, 4);
},
easeInOutQuart: function (x){
return x < 0.5 ?
8 * x * x * x * x :
1 - pow(-2 * x + 2, 4) / 2;
},
easeInQuint: function (x){
return x * x * x * x * x;
},
easeOutQuint: function (x){
return 1 - pow(1 - x, 5);
},
easeInOutQuint: function (x){
return x < 0.5 ?
16 * x * x * x * x * x :
1 - pow(-2 * x + 2, 5) / 2;
},
easeInSine: function (x){
return 1 - cos(x * PI/2);
},
easeOutSine: function (x){
return sin(x * PI/2);
},
easeInOutSine: function (x){
return -(cos(PI * x) - 1) / 2;
},
easeInExpo: function (x){
return x===0 ? 0:pow(2, 10 * x - 10);
},
easeOutExpo: function (x){
return x===1 ? 1:1 - pow(2, -10 * x);
},
easeInOutExpo: function (x){
return x===0 ? 0:x===1 ? 1:x < 0.5 ?
pow(2, 20 * x - 10) / 2 :
(2 - pow(2, -20 * x + 10) ) / 2;
},
easeInCirc: function (x){
return 1 - sqrt(1 - pow(x, 2) );
},
easeOutCirc: function (x){
return sqrt(1 - pow(x - 1, 2) );
},
easeInOutCirc: function (x){
return x < 0.5 ?
(1 - sqrt(1 - pow(2 * x, 2) )) / 2 :
(sqrt(1 - pow(-2 * x + 2, 2) ) + 1) / 2;
},
easeInElastic: function (x){
return x===0 ? 0:x===1 ? 1 :
-pow(2, 10 * x - 10) * sin(( x * 10 - 10.75) * c4);
},
easeOutElastic: function (x){
return x===0 ? 0:x===1 ? 1 :
pow(2, -10 * x) * sin(( x * 10 - 0.75) * c4) + 1;
},
easeInOutElastic: function (x){
return x===0 ? 0:x===1 ? 1:x < 0.5 ?
-(pow(2, 20 * x - 10) * sin(( 20 * x - 11.125) * c5)) / 2 :
pow(2, -20 * x + 10) * sin(( 20 * x - 11.125) * c5) / 2 + 1;
},
easeInBack: function (x){
return c3 * x * x * x - c1 * x * x;
},
easeOutBack: function (x){
return 1 + c3 * pow(x - 1, 3) + c1 * pow(x - 1, 2);
},
easeInOutBack: function (x){
return x < 0.5 ?
(pow(2 * x, 2) *(( c2 + 1) * 2 * x - c2) ) / 2 :
(pow(2 * x - 2, 2) *(( c2 + 1) *(x * 2 - 2) + c2) + 2) / 2;
},
easeInBounce: function (x){
return 1 - bounceOut(1 - x);
},
easeOutBounce: bounceOut,
easeInOutBounce: function (x){
return x < 0.5 ?
(1 - bounceOut(1 - 2 * x) ) / 2 :
(1 + bounceOut(2 * x - 1) ) / 2;
}});
});