https://biztucson.com/wp-content/plugins/wp-responsive-thumbnail-slider-pro/js/effects-eas.js?ver=2.15

1/*
2 * jQuery Easing v1.4.1 - http://gsgd.co.uk/sandbox/jquery/easing/
3 * Open source under the BSD License.
4 * Copyright © 2008 George McGinley Smith
5 * All rights reserved.
6 * https://raw.github.com/gdsmith/jquery-easing/master/LICENSE
7*/
8
9;(function($) {
10
11// Preserve the original jQuery "swing" easing as "jswing"
12$.easing.jswing = $.easing.swing;
13
14var pow = Math.pow,
15	sqrt = Math.sqrt,
16	sin = Math.sin,
17	cos = Math.cos,
18	PI = Math.PI,
19	c1 = 1.70158,
20	c2 = c1 * 1.525,
21	c3 = c1 + 1,
22	c4 = ( 2 * PI ) / 3,
23	c5 = ( 2 * PI ) / 4.5;
24
25// x is the fraction of animation progress, in the range 0..1
26function bounceOut(x) {
27	var n1 = 7.5625,
28		d1 = 2.75;
29	if ( x < 1/d1 ) {
30		return n1*x*x;
31	} else if ( x < 2/d1 ) {
32		return n1*(x-=(1.5/d1))*x + 0.75;
33	} else if ( x < 2.5/d1 ) {
34		return n1*(x-=(2.25/d1))*x + 0.9375;
35	} else {
36		return n1*(x-=(2.625/d1))*x + 0.984375;
37	}
38}
39
40$.extend( $.easing,
41{
42	def: 'easeOutQuad',
43	swing: function (x) {
44		return $.easing[$.easing.def](x);
45	},
46	easeInQuad: function (x) {
47		return x * x;
48	},
49	easeOutQuad: function (x) {
50		return 1 - ( 1 - x ) * ( 1 - x );
51	},
52	easeInOutQuad: function (x) {
53		return x < 0.5 ?
54			2 * x * x :
55			1 - pow( -2 * x + 2, 2 ) / 2;
56	},
57	easeInCubic: function (x) {
58		return x * x * x;
59	},
60	easeOutCubic: function (x) {
61		return 1 - pow( 1 - x, 3 );
62	},
63	easeInOutCubic: function (x) {
64		return x < 0.5 ?
65			4 * x * x * x :
66			1 - pow( -2 * x + 2, 3 ) / 2;
67	},
68	easeInQuart: function (x) {
69		return x * x * x * x;
70	},
71	easeOutQuart: function (x) {
72		return 1 - pow( 1 - x, 4 );
73	},
74	easeInOutQuart: function (x) {
75		return x < 0.5 ?
76			8 * x * x * x * x :
77			1 - pow( -2 * x + 2, 4 ) / 2;
78	},
79	easeInQuint: function (x) {
80		return x * x * x * x * x;
81	},
82	easeOutQuint: function (x) {
83		return 1 - pow( 1 - x, 5 );
84	},
85	easeInOutQuint: function (x) {
86		return x < 0.5 ?
87			16 * x * x * x * x * x :
88			1 - pow( -2 * x + 2, 5 ) / 2;
89	},
90	easeInSine: function (x) {
91		return 1 - cos( x * PI/2 );
92	},
93	easeOutSine: function (x) {
94		return sin( x * PI/2 );
95	},
96	easeInOutSine: function (x) {
97		return -( cos( PI * x ) - 1 ) / 2;
98	},
99	easeInExpo: function (x) {
100		return x === 0 ? 0 : pow( 2, 10 * x - 10 );
101	},
102	easeOutExpo: function (x) {
103		return x === 1 ? 1 : 1 - pow( 2, -10 * x );
104	},
105	easeInOutExpo: function (x) {
106		return x === 0 ? 0 : x === 1 ? 1 : x < 0.5 ?
107			pow( 2, 20 * x - 10 ) / 2 :
108			( 2 - pow( 2, -20 * x + 10 ) ) / 2;
109	},
110	easeInCirc: function (x) {
111		return 1 - sqrt( 1 - pow( x, 2 ) );
112	},
113	easeOutCirc: function (x) {
114		return sqrt( 1 - pow( x - 1, 2 ) );
115	},
116	easeInOutCirc: function (x) {
117		return x < 0.5 ?
118			( 1 - sqrt( 1 - pow( 2 * x, 2 ) ) ) / 2 :
119			( sqrt( 1 - pow( -2 * x + 2, 2 ) ) + 1 ) / 2;
120	},
121	easeInElastic: function (x) {
122		return x === 0 ? 0 : x === 1 ? 1 :
123			-pow( 2, 10 * x - 10 ) * sin( ( x * 10 - 10.75 ) * c4 );
124	},
125	easeOutElastic: function (x) {
126		return x === 0 ? 0 : x === 1 ? 1 :
127			pow( 2, -10 * x ) * sin( ( x * 10 - 0.75 ) * c4 ) + 1;
128	},
129	easeInOutElastic: function (x) {
130		return x === 0 ? 0 : x === 1 ? 1 : x < 0.5 ?
131			-( pow( 2, 20 * x - 10 ) * sin( ( 20 * x - 11.125 ) * c5 )) / 2 :
132			pow( 2, -20 * x + 10 ) * sin( ( 20 * x - 11.125 ) * c5 ) / 2 + 1;
133	},
134	easeInBack: function (x) {
135		return c3 * x * x * x - c1 * x * x;
136	},
137	easeOutBack: function (x) {
138		return 1 + c3 * pow( x - 1, 3 ) + c1 * pow( x - 1, 2 );
139	},
140	easeInOutBack: function (x) {
141		return x < 0.5 ?
142			( pow( 2 * x, 2 ) * ( ( c2 + 1 ) * 2 * x - c2 ) ) / 2 :
143			( pow( 2 * x - 2, 2 ) *( ( c2 + 1 ) * ( x * 2 - 2 ) + c2 ) + 2 ) / 2;
144	},
145	easeInBounce: function (x) {
146		return 1 - bounceOut( 1 - x );
147	},
148	easeOutBounce: bounceOut,
149	easeInOutBounce: function (x) {
150		return x < 0.5 ?
151			( 1 - bounceOut( 1 - 2 * x ) ) / 2 :
152			( 1 + bounceOut( 2 * x - 1 ) ) / 2;
153	}
154	});
155})(jQuery);