source: extensions/piwigo_mobile/ios/www/js/jquery.easing.js @ 29874

/*
 * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
 *
 * Uses the built in easing capabilities added In jQuery 1.1
 * to offer multiple easing options
 *
 * TERMS OF USE - jQuery Easing
 * 
 * Open source under the BSD License. 
 * 
 * Copyright © 2008 George McGinley Smith
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice, this list of 
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list 
 * of conditions and the following disclaimer in the documentation and/or other materials 
 * provided with the distribution.
 * 
 * Neither the name of the author nor the names of contributors may be used to endorse 
 * or promote products derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
 * OF THE POSSIBILITY OF SUCH DAMAGE. 
 *
*/

// t: current time, b: begInnIng value, c: change In value, d: duration
jQuery.easing['jswing'] = jQuery.easing['swing'];

jQuery.extend( jQuery.easing,
{
        def: 'easeOutQuad',
        swing: function (x, t, b, c, d) {
                //alert(jQuery.easing.default);
                return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
        },
        easeInQuad: function (x, t, b, c, d) {
                return c*(t/=d)*t + b;
        },
        easeOutQuad: function (x, t, b, c, d) {
                return -c *(t/=d)*(t-2) + b;
        },
        easeInOutQuad: function (x, t, b, c, d) {
                if ((t/=d/2) < 1) return c/2*t*t + b;
                return -c/2 * ((--t)*(t-2) - 1) + b;
        },
        easeInCubic: function (x, t, b, c, d) {
                return c*(t/=d)*t*t + b;
        },
        easeOutCubic: function (x, t, b, c, d) {
                return c*((t=t/d-1)*t*t + 1) + b;
        },
        easeInOutCubic: function (x, t, b, c, d) {
                if ((t/=d/2) < 1) return c/2*t*t*t + b;
                return c/2*((t-=2)*t*t + 2) + b;
        },
        easeInQuart: function (x, t, b, c, d) {
                return c*(t/=d)*t*t*t + b;
        },
        easeOutQuart: function (x, t, b, c, d) {
                return -c * ((t=t/d-1)*t*t*t - 1) + b;
        },
        easeInOutQuart: function (x, t, b, c, d) {
                if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
                return -c/2 * ((t-=2)*t*t*t - 2) + b;
        },
        easeInQuint: function (x, t, b, c, d) {
                return c*(t/=d)*t*t*t*t + b;
        },
        easeOutQuint: function (x, t, b, c, d) {
                return c*((t=t/d-1)*t*t*t*t + 1) + b;
        },
        easeInOutQuint: function (x, t, b, c, d) {
                if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
                return c/2*((t-=2)*t*t*t*t + 2) + b;
        },
        easeInSine: function (x, t, b, c, d) {
                return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
        },
        easeOutSine: function (x, t, b, c, d) {
                return c * Math.sin(t/d * (Math.PI/2)) + b;
        },
        easeInOutSine: function (x, t, b, c, d) {
                return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
        },
        easeInExpo: function (x, t, b, c, d) {
                return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
        },
        easeOutExpo: function (x, t, b, c, d) {
                return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
        },
        easeInOutExpo: function (x, t, b, c, d) {
                if (t==0) return b;
                if (t==d) return b+c;
                if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
                return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
        },
        easeInCirc: function (x, t, b, c, d) {
                return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
        },
        easeOutCirc: function (x, t, b, c, d) {
                return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
        },
        easeInOutCirc: function (x, t, b, c, d) {
                if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
                return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
        },
        easeInElastic: function (x, t, b, c, d) {
                var s=1.70158;var p=0;var a=c;
                if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
                if (a < Math.abs(c)) { a=c; var s=p/4; }
                else var s = p/(2*Math.PI) * Math.asin (c/a);
                return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
        },
        easeOutElastic: function (x, t, b, c, d) {
                var s=1.70158;var p=0;var a=c;
                if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
                if (a < Math.abs(c)) { a=c; var s=p/4; }
                else var s = p/(2*Math.PI) * Math.asin (c/a);
                return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
        },
        easeInOutElastic: function (x, t, b, c, d) {
                var s=1.70158;var p=0;var a=c;
                if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
                if (a < Math.abs(c)) { a=c; var s=p/4; }
                else var s = p/(2*Math.PI) * Math.asin (c/a);
                if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
                return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
        },
        easeInBack: function (x, t, b, c, d, s) {
                if (s == undefined) s = 1.70158;
                return c*(t/=d)*t*((s+1)*t - s) + b;
        },
        easeOutBack: function (x, t, b, c, d, s) {
                if (s == undefined) s = 1.70158;
                return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
        },
        easeInOutBack: function (x, t, b, c, d, s) {
                if (s == undefined) s = 1.70158; 
                if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
                return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
        },
        easeInBounce: function (x, t, b, c, d) {
                return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
        },
        easeOutBounce: function (x, t, b, c, d) {
                if ((t/=d) < (1/2.75)) {
                        return c*(7.5625*t*t) + b;
                } else if (t < (2/2.75)) {
                        return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
                } else if (t < (2.5/2.75)) {
                        return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
                } else {
                        return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
                }
        },
        easeInOutBounce: function (x, t, b, c, d) {
                if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
                return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
        }
});

/*
 *
 * TERMS OF USE - EASING EQUATIONS
 * 
 * Open source under the BSD License. 
 * 
 * Copyright © 2001 Robert Penner
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice, this list of 
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list 
 * of conditions and the following disclaimer in the documentation and/or other materials 
 * provided with the distribution.
 * 
 * Neither the name of the author nor the names of contributors may be used to endorse 
 * or promote products derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
 * OF THE POSSIBILITY OF SUCH DAMAGE. 
 *
 */