CocoRoboDesktop/kityminder-editor/bower_components/kity/src/animate/easing.js

/**
 * Kity Animate Easing modified from jQuery Easing
 * Author: techird
 * Changes:
 *     1. make easing functions standalone
 *     2. remove the 'x' parameter
 */

/* ============================================================
 * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
 *
 * Open source under the BSD License.
 *
 * Copyright © 2008 George McGinley Smith
 * All rights reserved.
 * https://raw.github.com/danro/jquery-easing/master/LICENSE
 * ======================================================== */

define(function(require, exports, module) {

    var easings = {
        // t: current_time, b: begin_value, c: change_value, d: duration
        linear: function(t, b, c, d) {
            return c * (t / d) + b;
        },
        swing: function(t, b, c, d) {
            return easings.easeOutQuad(t, b, c, d);
        },
        ease: function(t, b, c, d) {
            return easings.easeInOutCubic(t, b, c, d);
        },
        easeInQuad: function(t, b, c, d) {
            return c * (t /= d) * t + b;
        },
        easeOutQuad: function(t, b, c, d) {
            return -c * (t /= d) * (t - 2) + b;
        },
        easeInOutQuad: function(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(t, b, c, d) {
            return c * (t /= d) * t * t + b;
        },
        easeOutCubic: function(t, b, c, d) {
            return c * ((t = t / d - 1) * t * t + 1) + b;
        },
        easeInOutCubic: function(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(t, b, c, d) {
            return c * (t /= d) * t * t * t + b;
        },
        easeOutQuart: function(t, b, c, d) {
            return -c * ((t = t / d - 1) * t * t * t - 1) + b;
        },
        easeInOutQuart: function(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(t, b, c, d) {
            return c * (t /= d) * t * t * t * t + b;
        },
        easeOutQuint: function(t, b, c, d) {
            return c * ((t = t / d - 1) * t * t * t * t + 1) + b;
        },
        easeInOutQuint: function(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(t, b, c, d) {
            return -c * Math.cos(t / d * (Math.PI / 2)) + c + b;
        },
        easeOutSine: function(t, b, c, d) {
            return c * Math.sin(t / d * (Math.PI / 2)) + b;
        },
        easeInOutSine: function(t, b, c, d) {
            return -c / 2 * (Math.cos(Math.PI * t / d) - 1) + b;
        },
        easeInExpo: function(t, b, c, d) {
            return (t === 0) ? b : c * Math.pow(2, 10 * (t / d - 1)) + b;
        },
        easeOutExpo: function(t, b, c, d) {
            return (t == d) ? b + c : c * (-Math.pow(2, -10 * t / d) + 1) + b;
        },
        easeInOutExpo: function(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(t, b, c, d) {
            return -c * (Math.sqrt(1 - (t /= d) * t) - 1) + b;
        },
        easeOutCirc: function(t, b, c, d) {
            return c * Math.sqrt(1 - (t = t / d - 1) * t) + b;
        },
        easeInOutCirc: function(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(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 * 0.3;
            if (a < Math.abs(c)) {
                a = c;
                s = p / 4;
            } else 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(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 * 0.3;
            if (a < Math.abs(c)) {
                a = c;
                s = p / 4;
            } else 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(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 * (0.3 * 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(t, b, c, d, s) {
            if (s == undefined) s = 1.70158;
            return c * (t /= d) * t * ((s + 1) * t - s) + b;
        },
        easeOutBack: function(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(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(t, b, c, d) {
            return c - easings.easeOutBounce(d - t, 0, c, d) + b;
        },
        easeOutBounce: function(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(t, b, c, d) {
            if (t < d / 2) return easings.easeInBounce(t * 2, 0, c, d) * .5 + b;
            return easings.easeOutBounce(t * 2 - d, 0, c, d) * .5 + c * .5 + b;
        }
    };

    return easings;
});

/*
 *
 * 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.
 *
 */