https://www.premiodipadreinfiglio.it/wp-content/themes/specal/specal/js/jquery.easing.js?ver=1.3

1/*
2 * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
3 */
4
5// t: current time, b: begInnIng value, c: change In value, d: duration
6jQuery.easing['jswing'] = jQuery.easing['swing'];
7
8jQuery.extend( jQuery.easing,
9{
10	def: 'easeOutQuad',
11	swing: function (x, t, b, c, d) {
12		return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
13	},
14	easeInQuad: function (x, t, b, c, d) {
15		return c*(t/=d)*t + b;
16	},
17	easeOutQuad: function (x, t, b, c, d) {
18		return -c *(t/=d)*(t-2) + b;
19	},
20	easeInOutQuad: function (x, t, b, c, d) {
21		if ((t/=d/2) < 1) return c/2*t*t + b;
22		return -c/2 * ((--t)*(t-2) - 1) + b;
23	},
24	easeInCubic: function (x, t, b, c, d) {
25		return c*(t/=d)*t*t + b;
26	},
27	easeOutCubic: function (x, t, b, c, d) {
28		return c*((t=t/d-1)*t*t + 1) + b;
29	},
30	easeInOutCubic: function (x, t, b, c, d) {
31		if ((t/=d/2) < 1) return c/2*t*t*t + b;
32		return c/2*((t-=2)*t*t + 2) + b;
33	},
34	easeInQuart: function (x, t, b, c, d) {
35		return c*(t/=d)*t*t*t + b;
36	},
37	easeOutQuart: function (x, t, b, c, d) {
38		return -c * ((t=t/d-1)*t*t*t - 1) + b;
39	},
40	easeInOutQuart: function (x, t, b, c, d) {
41		if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
42		return -c/2 * ((t-=2)*t*t*t - 2) + b;
43	},
44	easeInQuint: function (x, t, b, c, d) {
45		return c*(t/=d)*t*t*t*t + b;
46	},
47	easeOutQuint: function (x, t, b, c, d) {
48		return c*((t=t/d-1)*t*t*t*t + 1) + b;
49	},
50	easeInOutQuint: function (x, t, b, c, d) {
51		if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
52		return c/2*((t-=2)*t*t*t*t + 2) + b;
53	},
54	easeInSine: function (x, t, b, c, d) {
55		return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
56	},
57	easeOutSine: function (x, t, b, c, d) {
58		return c * Math.sin(t/d * (Math.PI/2)) + b;
59	},
60	easeInOutSine: function (x, t, b, c, d) {
61		return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
62	},
63	easeInExpo: function (x, t, b, c, d) {
64		return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
65	},
66	easeOutExpo: function (x, t, b, c, d) {
67		return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
68	},
69	easeInOutExpo: function (x, t, b, c, d) {
70		if (t==0) return b;
71		if (t==d) return b+c;
72		if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
73		return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
74	},
75	easeInCirc: function (x, t, b, c, d) {
76		return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
77	},
78	easeOutCirc: function (x, t, b, c, d) {
79		return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
80	},
81	easeInOutCirc: function (x, t, b, c, d) {
82		if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
83		return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
84	},
85	easeInElastic: function (x, t, b, c, d) {
86		var s=1.70158;var p=0;var a=c;
87		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
88		if (a < Math.abs(c)) { a=c; var s=p/4; }
89		else var s = p/(2*Math.PI) * Math.asin (c/a);
90		return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
91	},
92	easeOutElastic: function (x, t, b, c, d) {
93		var s=1.70158;var p=0;var a=c;
94		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
95		if (a < Math.abs(c)) { a=c; var s=p/4; }
96		else var s = p/(2*Math.PI) * Math.asin (c/a);
97		return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
98	},
99	easeInOutElastic: function (x, t, b, c, d) {
100		var s=1.70158;var p=0;var a=c;
101		if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
102		if (a < Math.abs(c)) { a=c; var s=p/4; }
103		else var s = p/(2*Math.PI) * Math.asin (c/a);
104		if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
105		return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
106	},
107	easeInBack: function (x, t, b, c, d, s) {
108		if (s == undefined) s = 1.70158;
109		return c*(t/=d)*t*((s+1)*t - s) + b;
110	},
111	easeOutBack: function (x, t, b, c, d, s) {
112		if (s == undefined) s = 1.70158;
113		return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
114	},
115	easeInOutBack: function (x, t, b, c, d, s) {
116		if (s == undefined) s = 1.70158; 
117		if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
118		return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
119	},
120	easeInBounce: function (x, t, b, c, d) {
121		return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
122	},
123	easeOutBounce: function (x, t, b, c, d) {
124		if ((t/=d) < (1/2.75)) {
125			return c*(7.5625*t*t) + b;
126		} else if (t < (2/2.75)) {
127			return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
128		} else if (t < (2.5/2.75)) {
129			return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
130		} else {
131			return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
132		}
133	},
134	easeInOutBounce: function (x, t, b, c, d) {
135		if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
136		return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
137	}
138});