//valueChange = valueEnd - valueStart;
var easeOutCubic= function (time, duration, valueStart, valueChange) {
return valueChange*((time=time/duration-1)*time*time + 1) + valueStart;
}
var easeInQuad= function (time, duration, valueStart, valueChange) {
return valueChange*(time/=duration)*time + valueStart;
}
var easeOutQuad= function (time, duration, valueStart, valueChange) {
return -valueChange *(time/=duration)*(time-2) + valueStart;
}
var easeInOutQuad= function (time, duration, valueStart, valueChange) {
if ((time/=duration/2) < 1) return valueChange/2*time*time + valueStart;
return -valueChange/2 * ((--time)*(time-2) - 1) + valueStart;
}
var easeInCubic= function (time, duration, valueStart, valueChange) {
return valueChange*(time/=duration)*time*time + valueStart;
}
var easeOutCubic= function (time, duration, valueStart, valueChange) {
return valueChange*((time=time/duration-1)*time*time + 1) + valueStart;
}
var easeInOutCubic= function (time, duration, valueStart, valueChange) {
if ((time/=duration/2) < 1) return valueChange/2*time*time*time + valueStart;
return valueChange/2*((time-=2)*time*time + 2) + valueStart;
}
var easeInQuart= function (time, duration, valueStart, valueChange) {
return valueChange*(time/=duration)*time*time*time + valueStart;
}
var easeOutQuart= function (time, duration, valueStart, valueChange) {
return -valueChange * ((time=time/duration-1)*time*time*time - 1) + valueStart;
}
var easeInOutQuart= function (time, duration, valueStart, valueChange) {
if ((time/=duration/2) < 1) return valueChange/2*time*time*time*time + valueStart;
return -valueChange/2 * ((time-=2)*time*time*time - 2) + valueStart;
}
var easeInQuint= function (time, duration, valueStart, valueChange) {
return valueChange*(time/=duration)*time*time*time*time + valueStart;
}
var easeOutQuint= function (time, duration, valueStart, valueChange) {
return valueChange*((time=time/duration-1)*time*time*time*time + 1) + valueStart;
}
var easeInOutQuint= function (time, duration, valueStart, valueChange) {
if ((time/=duration/2) < 1) return valueChange/2*time*time*time*time*time + valueStart;
return valueChange/2*((time-=2)*time*time*time*time + 2) + valueStart;
}
var easeInSine= function (time, duration, valueStart, valueChange) {
return -valueChange * Math.cos(time/duration * (Math.PI/2)) + valueChange + valueStart;
}
var easeOutSine= function (time, duration, valueStart, valueChange) {
return valueChange * Math.sin(time/duration * (Math.PI/2)) + valueStart;
}
var easeInOutSine= function (time, duration, valueStart, valueChange) {
return -valueChange/2 * (Math.cos(Math.PI*time/duration) - 1) + valueStart;
}
var easeInExpo= function (time, duration, valueStart, valueChange) {
return (time==0) ? valueStart : valueChange * Math.pow(2, 10 * (time/duration - 1)) + valueStart;
}
var easeOutExpo= function (time, duration, valueStart, valueChange) {
return (time==duration) ? valueStart+valueChange : valueChange * (-Math.pow(2, -10 * time/duration) + 1) + valueStart;
}
var easeInOutExpo= function (time, duration, valueStart, valueChange) {
if (time==0) return valueStart;
if (time==duration) return valueStart+valueChange;
if ((time/=duration/2) < 1) return valueChange/2 * Math.pow(2, 10 * (time - 1)) + valueStart;
return valueChange/2 * (-Math.pow(2, -10 * --time) + 2) + valueStart;
}
var easeInCirc= function (time, duration, valueStart, valueChange) {
return -valueChange * (Math.sqrt(1 - (time/=duration)*time) - 1) + valueStart;
}
var easeOutCirc= function (time, duration, valueStart, valueChange) {
return valueChange * Math.sqrt(1 - (time=time/duration-1)*time) + valueStart;
}
var easeInOutCirc= function (time, duration, valueStart, valueChange) {
if ((time/=duration/2) < 1) return -valueChange/2 * (Math.sqrt(1 - time*time) - 1) + valueStart;
return valueChange/2 * (Math.sqrt(1 - (time-=2)*time) + 1) + valueStart;
}
var easeInElastic= function (time, duration, valueStart, valueChange) {
var s=1.70158;var p=0;var a=valueChange;
if (time==0) return valueStart; if ((time/=duration)==1) return valueStart+valueChange; if (!p) p=duration*.3;
if (a < Math.abs(valueChange)) { a=valueChange; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin (valueChange/a);
return -(a*Math.pow(2,10*(time-=1)) * Math.sin( (time*duration-s)*(2*Math.PI)/p )) + valueStart;
}
var easeOutElastic= function (time, duration, valueStart, valueChange) {
var s=1.70158;var p=0;var a=valueChange;
if (time==0) return valueStart; if ((time/=duration)==1) return valueStart+valueChange; if (!p) p=duration*.3;
if (a < Math.abs(valueChange)) { a=valueChange; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin (valueChange/a);
return a*Math.pow(2,-10*time) * Math.sin( (time*duration-s)*(2*Math.PI)/p ) + valueChange + valueStart;
}
var easeInOutElastic= function (time, duration, valueStart, valueChange) {
var s=1.70158;var p=0;var a=valueChange;
if (time==0) return valueStart; if ((time/=duration/2)==2) return valueStart+valueChange; if (!p) p=duration*(.3*1.5);
if (a < Math.abs(valueChange)) { a=valueChange; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin (valueChange/a);
if (time < 1) return -.5*(a*Math.pow(2,10*(time-=1)) * Math.sin( (time*duration-s)*(2*Math.PI)/p )) + valueStart;
return a*Math.pow(2,-10*(time-=1)) * Math.sin( (time*duration-s)*(2*Math.PI)/p )*.5 + valueChange + valueStart;
}
var easeInBack= function (time, duration, valueStart, valueChange, s) {
if (s == undefined) s = 1.70158;
return valueChange*(time/=duration)*time*((s+1)*time - s) + valueStart;
}
var easeOutBack= function (time, duration, valueStart, valueChange, s) {
if (s == undefined) s = 1.70158;
return valueChange*((time=time/duration-1)*time*((s+1)*time + s) + 1) + valueStart;
}
var easeInOutBack= function (time, duration, valueStart, valueChange, s) {
if (s == undefined) s = 1.70158;
if ((time/=duration/2) < 1) return valueChange/2*(time*time*(((s*=(1.525))+1)*time - s)) + valueStart;
return valueChange/2*((time-=2)*time*(((s*=(1.525))+1)*time + s) + 2) + valueStart;
}
var easeInBounce= function (time, duration, valueStart, valueChange) {
return valueChange - (duration-time, 0, valueChange, duration) + valueStart;
}
var easeOutBounce= function (time, duration, valueStart, valueChange) {
if ((time/=duration) < (1/2.75)) {
return valueChange*(7.5625*time*time) + valueStart;
} else if (time < (2/2.75)) {
return valueChange*(7.5625*(time-=(1.5/2.75))*time + .75) + valueStart;
} else if (time < (2.5/2.75)) {
return valueChange*(7.5625*(time-=(2.25/2.75))*time + .9375) + valueStart;
} else {
return valueChange*(7.5625*(time-=(2.625/2.75))*time + .984375) + valueStart;
}
}
var easeInOutBounce= function (time, duration, valueStart, valueChange) {
if (time < duration/2) return (time*2, 0, valueChange, duration) * .5 + valueStart;
return (time*2-duration, 0, valueChange, duration) * .5 + valueChange*.5 + valueStart;
}
/*
*
* TERMS OF USE - EASING EQUATIONS
*
* Open source under the BSD License.
*
* Copyright (C) 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.
*
*/
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