1 | /*
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2 | * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
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3 | *
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4 | * Uses the built in easing capabilities added In jQuery 1.1
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5 | * to offer multiple easing options
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6 | *
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7 | * TERMS OF USE - jQuery Easing
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8 | *
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9 | * Open source under the BSD License.
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10 | *
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11 | * Copyright © 2008 George McGinley Smith
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12 | * All rights reserved.
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13 | *
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14 | * Redistribution and use in source and binary forms, with or without modification,
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15 | * are permitted provided that the following conditions are met:
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16 | *
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17 | * Redistributions of source code must retain the above copyright notice, this list of
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18 | * conditions and the following disclaimer.
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19 | * Redistributions in binary form must reproduce the above copyright notice, this list
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20 | * of conditions and the following disclaimer in the documentation and/or other materials
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21 | * provided with the distribution.
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22 | *
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23 | * Neither the name of the author nor the names of contributors may be used to endorse
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24 | * or promote products derived from this software without specific prior written permission.
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25 | *
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26 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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27 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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28 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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29 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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30 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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31 | * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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32 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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33 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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34 | * OF THE POSSIBILITY OF SUCH DAMAGE.
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35 | *
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36 | */
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37 |
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38 | // t: current time, b: begInnIng value, c: change In value, d: duration
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39 | jQuery.easing['jswing'] = jQuery.easing['swing'];
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40 |
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41 | jQuery.extend( jQuery.easing,
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42 | {
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43 | def: 'easeOutQuad',
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44 | swing: function (x, t, b, c, d) {
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45 | //alert(jQuery.easing.default);
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46 | return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
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47 | },
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48 | easeInQuad: function (x, t, b, c, d) {
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49 | return c*(t/=d)*t + b;
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50 | },
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51 | easeOutQuad: function (x, t, b, c, d) {
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52 | return -c *(t/=d)*(t-2) + b;
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53 | },
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54 | easeInOutQuad: function (x, t, b, c, d) {
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55 | if ((t/=d/2) < 1) return c/2*t*t + b;
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56 | return -c/2 * ((--t)*(t-2) - 1) + b;
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57 | },
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58 | easeInCubic: function (x, t, b, c, d) {
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59 | return c*(t/=d)*t*t + b;
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60 | },
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61 | easeOutCubic: function (x, t, b, c, d) {
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62 | return c*((t=t/d-1)*t*t + 1) + b;
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63 | },
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64 | easeInOutCubic: function (x, t, b, c, d) {
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65 | if ((t/=d/2) < 1) return c/2*t*t*t + b;
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66 | return c/2*((t-=2)*t*t + 2) + b;
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67 | },
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68 | easeInQuart: function (x, t, b, c, d) {
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69 | return c*(t/=d)*t*t*t + b;
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70 | },
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71 | easeOutQuart: function (x, t, b, c, d) {
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72 | return -c * ((t=t/d-1)*t*t*t - 1) + b;
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73 | },
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74 | easeInOutQuart: function (x, t, b, c, d) {
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75 | if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
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76 | return -c/2 * ((t-=2)*t*t*t - 2) + b;
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77 | },
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78 | easeInQuint: function (x, t, b, c, d) {
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79 | return c*(t/=d)*t*t*t*t + b;
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80 | },
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81 | easeOutQuint: function (x, t, b, c, d) {
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82 | return c*((t=t/d-1)*t*t*t*t + 1) + b;
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83 | },
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84 | easeInOutQuint: function (x, t, b, c, d) {
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85 | if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
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86 | return c/2*((t-=2)*t*t*t*t + 2) + b;
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87 | },
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88 | easeInSine: function (x, t, b, c, d) {
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89 | return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
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90 | },
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91 | easeOutSine: function (x, t, b, c, d) {
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92 | return c * Math.sin(t/d * (Math.PI/2)) + b;
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93 | },
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94 | easeInOutSine: function (x, t, b, c, d) {
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95 | return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
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96 | },
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97 | easeInExpo: function (x, t, b, c, d) {
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98 | return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
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99 | },
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100 | easeOutExpo: function (x, t, b, c, d) {
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101 | return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
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102 | },
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103 | easeInOutExpo: function (x, t, b, c, d) {
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104 | if (t==0) return b;
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105 | if (t==d) return b+c;
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106 | if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
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107 | return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
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108 | },
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109 | easeInCirc: function (x, t, b, c, d) {
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110 | return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
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111 | },
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112 | easeOutCirc: function (x, t, b, c, d) {
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113 | return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
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114 | },
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115 | easeInOutCirc: function (x, t, b, c, d) {
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116 | if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
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117 | return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
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118 | },
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119 | easeInElastic: function (x, t, b, c, d) {
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120 | var s=1.70158;var p=0;var a=c;
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121 | if (t==0) return b; if ((t/=d)==1) return b+c; if (!p) p=d*.3;
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122 | if (a < Math.abs(c)) { a=c; var s=p/4; }
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123 | else var s = p/(2*Math.PI) * Math.asin (c/a);
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124 | return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
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125 | },
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126 | easeOutElastic: function (x, t, b, c, d) {
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127 | var s=1.70158;var p=0;var a=c;
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128 | if (t==0) return b; if ((t/=d)==1) return b+c; if (!p) p=d*.3;
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129 | if (a < Math.abs(c)) { a=c; var s=p/4; }
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130 | else var s = p/(2*Math.PI) * Math.asin (c/a);
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131 | return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
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132 | },
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133 | easeInOutElastic: function (x, t, b, c, d) {
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134 | var s=1.70158;var p=0;var a=c;
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135 | if (t==0) return b; if ((t/=d/2)==2) return b+c; if (!p) p=d*(.3*1.5);
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136 | if (a < Math.abs(c)) { a=c; var s=p/4; }
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137 | else var s = p/(2*Math.PI) * Math.asin (c/a);
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138 | if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
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139 | return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
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140 | },
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141 | easeInBack: function (x, t, b, c, d, s) {
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142 | if (s == undefined) s = 1.70158;
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143 | return c*(t/=d)*t*((s+1)*t - s) + b;
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144 | },
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145 | easeOutBack: function (x, t, b, c, d, s) {
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146 | if (s == undefined) s = 1.70158;
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147 | return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
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148 | },
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149 | easeInOutBack: function (x, t, b, c, d, s) {
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150 | if (s == undefined) s = 1.70158;
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151 | if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
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152 | return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
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153 | },
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154 | easeInBounce: function (x, t, b, c, d) {
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155 | return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
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156 | },
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157 | easeOutBounce: function (x, t, b, c, d) {
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158 | if ((t/=d) < (1/2.75)) {
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159 | return c*(7.5625*t*t) + b;
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160 | } else if (t < (2/2.75)) {
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161 | return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
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162 | } else if (t < (2.5/2.75)) {
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163 | return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
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164 | } else {
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165 | return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
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166 | }
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167 | },
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168 | easeInOutBounce: function (x, t, b, c, d) {
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169 | if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
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170 | return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
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171 | }
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172 | }); |
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