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   1  /*
   2   * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
   3   *
   4   * Uses the built in easing capabilities added In jQuery 1.1
   5   * to offer multiple easing options
   6   *
   7   * TERMS OF USE - jQuery Easing
   8   * 
   9   * Open source under the BSD License. 
  10   * 
  11   * Copyright © 2008 George McGinley Smith
  12   * All rights reserved.
  13   * 
  14   * Redistribution and use in source and binary forms, with or without modification, 
  15   * are permitted provided that the following conditions are met:
  16   * 
  17   * Redistributions of source code must retain the above copyright notice, this list of 
  18   * conditions and the following disclaimer.
  19   * Redistributions in binary form must reproduce the above copyright notice, this list 
  20   * of conditions and the following disclaimer in the documentation and/or other materials 
  21   * provided with the distribution.
  22   * 
  23   * Neither the name of the author nor the names of contributors may be used to endorse 
  24   * or promote products derived from this software without specific prior written permission.
  25   * 
  26   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
  27   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  28   * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  29   *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  30   *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  31   *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
  32   * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  33   *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
  34   * OF THE POSSIBILITY OF SUCH DAMAGE. 
  35   *
  36  */
  37  
  38  // t: current time, b: begInnIng value, c: change In value, d: duration
  39  jQuery.easing['jswing'] = jQuery.easing['swing'];
  40  
  41  jQuery.extend( jQuery.easing,
  42  {
  43      def: 'easeOutQuad',
  44      swing: function (x, t, b, c, d) {
  45          //alert(jQuery.easing.default);
  46          return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
  47      },
  48      easeInQuad: function (x, t, b, c, d) {
  49          return c*(t/=d)*t + b;
  50      },
  51      easeOutQuad: function (x, t, b, c, d) {
  52          return -c *(t/=d)*(t-2) + b;
  53      },
  54      easeInOutQuad: function (x, t, b, c, d) {
  55          if ((t/=d/2) < 1) return c/2*t*t + b;
  56          return -c/2 * ((--t)*(t-2) - 1) + b;
  57      },
  58      easeInCubic: function (x, t, b, c, d) {
  59          return c*(t/=d)*t*t + b;
  60      },
  61      easeOutCubic: function (x, t, b, c, d) {
  62          return c*((t=t/d-1)*t*t + 1) + b;
  63      },
  64      easeInOutCubic: function (x, t, b, c, d) {
  65          if ((t/=d/2) < 1) return c/2*t*t*t + b;
  66          return c/2*((t-=2)*t*t + 2) + b;
  67      },
  68      easeInQuart: function (x, t, b, c, d) {
  69          return c*(t/=d)*t*t*t + b;
  70      },
  71      easeOutQuart: function (x, t, b, c, d) {
  72          return -c * ((t=t/d-1)*t*t*t - 1) + b;
  73      },
  74      easeInOutQuart: function (x, t, b, c, d) {
  75          if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
  76          return -c/2 * ((t-=2)*t*t*t - 2) + b;
  77      },
  78      easeInQuint: function (x, t, b, c, d) {
  79          return c*(t/=d)*t*t*t*t + b;
  80      },
  81      easeOutQuint: function (x, t, b, c, d) {
  82          return c*((t=t/d-1)*t*t*t*t + 1) + b;
  83      },
  84      easeInOutQuint: function (x, t, b, c, d) {
  85          if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
  86          return c/2*((t-=2)*t*t*t*t + 2) + b;
  87      },
  88      easeInSine: function (x, t, b, c, d) {
  89          return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
  90      },
  91      easeOutSine: function (x, t, b, c, d) {
  92          return c * Math.sin(t/d * (Math.PI/2)) + b;
  93      },
  94      easeInOutSine: function (x, t, b, c, d) {
  95          return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
  96      },
  97      easeInExpo: function (x, t, b, c, d) {
  98          return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
  99      },
 100      easeOutExpo: function (x, t, b, c, d) {
 101          return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
 102      },
 103      easeInOutExpo: function (x, t, b, c, d) {
 104          if (t==0) return b;
 105          if (t==d) return b+c;
 106          if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
 107          return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
 108      },
 109      easeInCirc: function (x, t, b, c, d) {
 110          return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
 111      },
 112      easeOutCirc: function (x, t, b, c, d) {
 113          return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
 114      },
 115      easeInOutCirc: function (x, t, b, c, d) {
 116          if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
 117          return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
 118      },
 119      easeInElastic: function (x, t, b, c, d) {
 120          var s=1.70158;var p=0;var a=c;
 121          if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
 122          if (a < Math.abs(c)) { a=c; var s=p/4; }
 123          else var s = p/(2*Math.PI) * Math.asin (c/a);
 124          return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
 125      },
 126      easeOutElastic: function (x, t, b, c, d) {
 127          var s=1.70158;var p=0;var a=c;
 128          if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
 129          if (a < Math.abs(c)) { a=c; var s=p/4; }
 130          else var s = p/(2*Math.PI) * Math.asin (c/a);
 131          return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
 132      },
 133      easeInOutElastic: function (x, t, b, c, d) {
 134          var s=1.70158;var p=0;var a=c;
 135          if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
 136          if (a < Math.abs(c)) { a=c; var s=p/4; }
 137          else var s = p/(2*Math.PI) * Math.asin (c/a);
 138          if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
 139          return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
 140      },
 141      easeInBack: function (x, t, b, c, d, s) {
 142          if (s == undefined) s = 1.70158;
 143          return c*(t/=d)*t*((s+1)*t - s) + b;
 144      },
 145      easeOutBack: function (x, t, b, c, d, s) {
 146          if (s == undefined) s = 1.70158;
 147          return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
 148      },
 149      easeInOutBack: function (x, t, b, c, d, s) {
 150          if (s == undefined) s = 1.70158; 
 151          if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
 152          return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
 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  
 174  /*
 175   *
 176   * TERMS OF USE - EASING EQUATIONS
 177   * 
 178   * Open source under the BSD License. 
 179   * 
 180   * Copyright © 2001 Robert Penner
 181   * All rights reserved.
 182   * 
 183   * Redistribution and use in source and binary forms, with or without modification, 
 184   * are permitted provided that the following conditions are met:
 185   * 
 186   * Redistributions of source code must retain the above copyright notice, this list of 
 187   * conditions and the following disclaimer.
 188   * Redistributions in binary form must reproduce the above copyright notice, this list 
 189   * of conditions and the following disclaimer in the documentation and/or other materials 
 190   * provided with the distribution.
 191   * 
 192   * Neither the name of the author nor the names of contributors may be used to endorse 
 193   * or promote products derived from this software without specific prior written permission.
 194   * 
 195   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 196   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 197   * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 198   *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 199   *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 200   *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
 201   * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 202   *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
 203   * OF THE POSSIBILITY OF SUCH DAMAGE. 
 204   *
 205   */