https://europeancancer.org/components/com_flexicontent/assets/js/jquery-easing.js

1/* 
2 * FOLLOWING part are jQuery easing functions authored by George McGinley Smith
3 *
4 * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
5 *
6 * Uses the built in easing capabilities added In jQuery 1.1 to offer multiple easing options
7 *
8 * TERMS OF USE - jQuery Easing
9 * 
10 * Open source under the BSD License. 
11 * 
12 * Copyright © 2008 George McGinley Smith
13 * All rights reserved.
14 */
15
16// t: current time, b: begInnIng value, c: change In value, d: duration
17if (typeof jQuery != 'undefined') {
18	
19	jQuery.easing['jswing'] = jQuery.easing['swing'];
20	
21	jQuery.extend( jQuery.easing,
22	{
23		def: 'easeOutQuad',
24		swing: function (x, t, b, c, d) {
25			//alert(jQuery.easing.default);
26			return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
27		},
28		
29		
30		easeInQuad: function (x, t, b, c, d) {
31			return c*(t/=d)*t + b;
32		},
33		easeOutQuad: function (x, t, b, c, d) {
34			return -c *(t/=d)*(t-2) + b;
35		},
36		easeInOutQuad: function (x, t, b, c, d) {
37			if ((t/=d/2) < 1) return c/2*t*t + b;
38			return -c/2 * ((--t)*(t-2) - 1) + b;
39		},
40		
41		
42		easeInCubic: function (x, t, b, c, d) {
43			return c*(t/=d)*t*t + b;
44		},
45		easeOutCubic: function (x, t, b, c, d) {
46			return c*((t=t/d-1)*t*t + 1) + b;
47		},
48		easeInOutCubic: function (x, t, b, c, d) {
49			if ((t/=d/2) < 1) return c/2*t*t*t + b;
50			return c/2*((t-=2)*t*t + 2) + b;
51		},
52		
53		
54		easeInQuart: function (x, t, b, c, d) {
55			return c*(t/=d)*t*t*t + b;
56		},
57		easeOutQuart: function (x, t, b, c, d) {
58			return -c * ((t=t/d-1)*t*t*t - 1) + b;
59		},
60		easeInOutQuart: function (x, t, b, c, d) {
61			if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
62			return -c/2 * ((t-=2)*t*t*t - 2) + b;
63		},
64		
65		
66		easeInQuint: function (x, t, b, c, d) {
67			return c*(t/=d)*t*t*t*t + b;
68		},
69		easeOutQuint: function (x, t, b, c, d) {
70			return c*((t=t/d-1)*t*t*t*t + 1) + b;
71		},
72		easeInOutQuint: function (x, t, b, c, d) {
73			if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
74			return c/2*((t-=2)*t*t*t*t + 2) + b;
75		},
76		
77		
78		easeInSine: function (x, t, b, c, d) {
79			return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
80		},
81		easeOutSine: function (x, t, b, c, d) {
82			return c * Math.sin(t/d * (Math.PI/2)) + b;
83		},
84		easeInOutSine: function (x, t, b, c, d) {
85			return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
86		},
87		
88		
89		easeInExpo: function (x, t, b, c, d) {
90			return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
91		},
92		easeOutExpo: function (x, t, b, c, d) {
93			return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
94		},
95		easeInOutExpo: function (x, t, b, c, d) {
96			if (t==0) return b;
97			if (t==d) return b+c;
98			if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
99			return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
100		},
101		
102		
103		easeInCirc: function (x, t, b, c, d) {
104			return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
105		},
106		easeOutCirc: function (x, t, b, c, d) {
107			return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
108		},
109		easeInOutCirc: function (x, t, b, c, d) {
110			if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
111			return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
112		},
113		
114		
115		easeInElastic: function (x, t, b, c, d) {
116			var s=1.70158;var p=0;var a=c;
117			if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
118			if (a < Math.abs(c)) { a=c; var s=p/4; }
119			else var s = p/(2*Math.PI) * Math.asin (c/a);
120			return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
121		},
122		easeOutElastic: function (x, t, b, c, d) {
123			var s=1.70158;var p=0;var a=c;
124			if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
125			if (a < Math.abs(c)) { a=c; var s=p/4; }
126			else var s = p/(2*Math.PI) * Math.asin (c/a);
127			return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
128		},
129		easeInOutElastic: function (x, t, b, c, d) {
130			var s=1.70158;var p=0;var a=c;
131			if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
132			if (a < Math.abs(c)) { a=c; var s=p/4; }
133			else var s = p/(2*Math.PI) * Math.asin (c/a);
134			if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
135			return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
136		},
137		
138		
139		easeInBack: function (x, t, b, c, d, s) {
140			if (s == undefined) s = 1.70158;
141			return c*(t/=d)*t*((s+1)*t - s) + b;
142		},
143		easeOutBack: function (x, t, b, c, d, s) {
144			if (s == undefined) s = 1.70158;
145			return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
146		},
147		easeInOutBack: function (x, t, b, c, d, s) {
148			if (s == undefined) s = 1.70158; 
149			if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
150			return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
151		},
152		
153		
154		easeInBounce: function (x, t, b, c, d) {
155			return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
156		},
157		easeOutBounce: function (x, t, b, c, d) {
158			if ((t/=d) < (1/2.75)) {
159				return c*(7.5625*t*t) + b;
160			} else if (t < (2/2.75)) {
161				return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
162			} else if (t < (2.5/2.75)) {
163				return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
164			} else {
165				return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
166			}
167		},
168		easeInOutBounce: function (x, t, b, c, d) {
169			if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
170			return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
171		}
172	});
173}