kityminder
Version:
210 lines (205 loc) • 8.62 kB
JavaScript
/**
* 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.
*
*/