_show: jQuery.fn.show,
/**
- * Show all matched elements using a graceful animation.
+ * Show all matched elements using a graceful animation and firing an
+ * optional callback after completion.
+ *
* The height, width, and opacity of each of the matched elements
* are changed dynamically according to the specified speed.
*
* @example $("p").show("slow");
*
- * @name show
- * @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @cat Effects/Animations
- */
-
- /**
- * Show all matched elements using a graceful animation and firing a callback
- * function after completion.
- * The height, width, and opacity of each of the matched elements
- * are changed dynamically according to the specified speed.
- *
* @example $("p").show("slow",function(){
* alert("Animation Done.");
* });
*
* @name show
* @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @param Function callback A function to be executed whenever the animation completes.
+ * @param String|Number speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
+ * @param Function callback (optional) A function to be executed whenever the animation completes.
+ * @param String easing (optional) easing effect
* @cat Effects/Animations
+ * @see hide(String|Number,Function)
*/
- show: function(speed,callback){
+ show: function(speed,callback, easing){
return speed ? this.animate({
height: "show", width: "show", opacity: "show"
- }, speed, callback) : this._show();
+ }, speed, callback, easing) : this._show();
},
// Overwrite the old hide method
_hide: jQuery.fn.hide,
/**
- * Hide all matched elements using a graceful animation.
+ * Hide all matched elements using a graceful animation and firing an
+ * optional callback after completion.
+ *
* The height, width, and opacity of each of the matched elements
* are changed dynamically according to the specified speed.
*
* @example $("p").hide("slow");
*
- * @name hide
- * @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @cat Effects/Animations
- */
-
- /**
- * Hide all matched elements using a graceful animation and firing a callback
- * function after completion.
- * The height, width, and opacity of each of the matched elements
- * are changed dynamically according to the specified speed.
- *
* @example $("p").hide("slow",function(){
* alert("Animation Done.");
* });
*
* @name hide
* @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @param Function callback A function to be executed whenever the animation completes.
+ * @param String|Number speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
+ * @param Function callback (optional) A function to be executed whenever the animation completes.
+ * @param String easing (optional) easing effect
* @cat Effects/Animations
+ * @see show(String|Number,Function)
*/
- hide: function(speed,callback){
+ hide: function(speed,callback, easing){
return speed ? this.animate({
height: "hide", width: "hide", opacity: "hide"
- }, speed, callback) : this._hide();
+ }, speed, callback, easing) : this._hide();
},
/**
- * Reveal all matched elements by adjusting their height.
+ * Reveal all matched elements by adjusting their height and firing an
+ * optional callback after completion.
+ *
* Only the height is adjusted for this animation, causing all matched
* elements to be revealed in a "sliding" manner.
*
* @example $("p").slideDown("slow");
*
- * @name slideDown
- * @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @cat Effects/Animations
- */
-
- /**
- * Reveal all matched elements by adjusting their height and firing a callback
- * function after completion.
- * Only the height is adjusted for this animation, causing all matched
- * elements to be revealed in a "sliding" manner.
- *
* @example $("p").slideDown("slow",function(){
* alert("Animation Done.");
* });
*
* @name slideDown
* @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @param Function callback A function to be executed whenever the animation completes.
+ * @param String|Number speed (optional) A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
+ * @param Function callback (optional) A function to be executed whenever the animation completes.
+ * @param String easing (optional) easing effect
* @cat Effects/Animations
+ * @see slideUp(String|Number,Function)
+ * @see slideToggle(String|Number,Function)
*/
- slideDown: function(speed,callback){
- return this.animate({height: "show"}, speed, callback);
+ slideDown: function(speed,callback, easing){
+ return this.animate({height: "show"}, speed, callback, easing);
},
/**
- * Hide all matched elements by adjusting their height.
+ * Hide all matched elements by adjusting their height and firing an
+ * optional callback after completion.
+ *
* Only the height is adjusted for this animation, causing all matched
* elements to be hidden in a "sliding" manner.
*
* @example $("p").slideUp("slow");
*
- * @name slideUp
- * @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @cat Effects/Animations
- */
-
- /**
- * Hide all matched elements by adjusting their height and firing a callback
- * function after completion.
- * Only the height is adjusted for this animation, causing all matched
- * elements to be hidden in a "sliding" manner.
- *
* @example $("p").slideUp("slow",function(){
* alert("Animation Done.");
* });
*
* @name slideUp
* @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @param Function callback A function to be executed whenever the animation completes.
+ * @param String|Number speed (optional) A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
+ * @param Function callback (optional) A function to be executed whenever the animation completes.
+ * @param String easing (optional) easing effect
* @cat Effects/Animations
+ * @see slideDown(String|Number,Function)
+ * @see slideToggle(String|Number,Function)
*/
- slideUp: function(speed,callback){
- return this.animate({height: "hide"}, speed, callback);
+ slideUp: function(speed,callback, easing){
+ return this.animate({height: "hide"}, speed, callback, easing);
},
/**
- * Toggle the visibility of all matched elements by adjusting their height.
+ * Toggle the visibility of all matched elements by adjusting their height and firing an
+ * optional callback after completion.
+ *
* Only the height is adjusted for this animation, causing all matched
* elements to be hidden in a "sliding" manner.
*
* @example $("p").slideToggle("slow");
*
- * @name slideToggle
- * @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @cat Effects/Animations
- */
-
- /**
- * Toggle the visibility of all matched elements by adjusting their height
- * and firing a callback function after completion.
- * Only the height is adjusted for this animation, causing all matched
- * elements to be hidden in a "sliding" manner.
- *
* @example $("p").slideToggle("slow",function(){
* alert("Animation Done.");
* });
*
* @name slideToggle
* @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @param Function callback A function to be executed whenever the animation completes.
+ * @param String|Number speed (optional) A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
+ * @param Function callback (optional) A function to be executed whenever the animation completes.
+ * @param String easing (optional) easing effect
* @cat Effects/Animations
+ * @see slideDown(String|Number,Function)
+ * @see slideUp(String|Number,Function)
*/
- slideToggle: function(speed,callback){
+ slideToggle: function(speed, callback, easing){
return this.each(function(){
var state = jQuery(this).is(":hidden") ? "show" : "hide";
- jQuery(this).animate({height: state}, speed, callback);
+ jQuery(this).animate({height: state}, speed, callback, easing);
});
},
/**
- * Fade in all matched elements by adjusting their opacity.
+ * Fade in all matched elements by adjusting their opacity and firing an
+ * optional callback after completion.
+ *
* Only the opacity is adjusted for this animation, meaning that
* all of the matched elements should already have some form of height
* and width associated with them.
*
* @example $("p").fadeIn("slow");
*
- * @name fadeIn
- * @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @cat Effects/Animations
- */
-
- /**
- * Fade in all matched elements by adjusting their opacity and firing a
- * callback function after completion.
- * Only the opacity is adjusted for this animation, meaning that
- * all of the matched elements should already have some form of height
- * and width associated with them.
- *
* @example $("p").fadeIn("slow",function(){
* alert("Animation Done.");
* });
*
* @name fadeIn
* @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @param Function callback A function to be executed whenever the animation completes.
+ * @param String|Number speed (optional) A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
+ * @param Function callback (optional) A function to be executed whenever the animation completes.
+ * @param String easing (optional) easing effect
* @cat Effects/Animations
+ * @see fadeOut(String|Number,Function)
+ * @see fadeTo(String|Number,Number,Function)
*/
- fadeIn: function(speed,callback){
- return this.animate({opacity: "show"}, speed, callback);
+ fadeIn: function(speed, callback, easing){
+ return this.animate({opacity: "show"}, speed, callback, easing);
},
/**
- * Fade out all matched elements by adjusting their opacity.
+ * Fade out all matched elements by adjusting their opacity and firing an
+ * optional callback after completion.
+ *
* Only the opacity is adjusted for this animation, meaning that
* all of the matched elements should already have some form of height
* and width associated with them.
*
* @example $("p").fadeOut("slow");
*
- * @name fadeOut
- * @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @cat Effects/Animations
- */
-
- /**
- * Fade out all matched elements by adjusting their opacity and firing a
- * callback function after completion.
- * Only the opacity is adjusted for this animation, meaning that
- * all of the matched elements should already have some form of height
- * and width associated with them.
- *
* @example $("p").fadeOut("slow",function(){
* alert("Animation Done.");
* });
*
* @name fadeOut
* @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @param Function callback A function to be executed whenever the animation completes.
+ * @param String|Number speed (optional) A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
+ * @param Function callback (optional) A function to be executed whenever the animation completes.
+ * @param String easing (optional) easing effect
* @cat Effects/Animations
+ * @see fadeIn(String|Number,Function)
+ * @see fadeTo(String|Number,Number,Function)
*/
- fadeOut: function(speed,callback){
- return this.animate({opacity: "hide"}, speed, callback);
+ fadeOut: function(speed, callback, easing){
+ return this.animate({opacity: "hide"}, speed, callback, easing);
},
/**
- * Fade the opacity of all matched elements to a specified opacity.
+ * Fade the opacity of all matched elements to a specified opacity and firing an
+ * optional callback after completion.
+ *
* Only the opacity is adjusted for this animation, meaning that
* all of the matched elements should already have some form of height
* and width associated with them.
*
* @example $("p").fadeTo("slow", 0.5);
*
- * @name fadeTo
- * @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @param Number opacity The opacity to fade to (a number from 0 to 1).
- * @cat Effects/Animations
- */
-
- /**
- * Fade the opacity of all matched elements to a specified opacity and
- * firing a callback function after completion.
- * Only the opacity is adjusted for this animation, meaning that
- * all of the matched elements should already have some form of height
- * and width associated with them.
- *
* @example $("p").fadeTo("slow", 0.5, function(){
* alert("Animation Done.");
* });
*
* @name fadeTo
* @type jQuery
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
+ * @param String|Number speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
* @param Number opacity The opacity to fade to (a number from 0 to 1).
- * @param Function callback A function to be executed whenever the animation completes.
+ * @param Function callback (optional) A function to be executed whenever the animation completes.
+ * @param String easing (optional) easing effect
* @cat Effects/Animations
+ * @see fadeIn(String|Number,Function)
+ * @see fadeOut(String|Number,Function)
*/
- fadeTo: function(speed,to,callback){
- return this.animate({opacity: to}, speed, callback);
+ fadeTo: function(speed,to,callback, easing){
+ return this.animate({opacity: to}, speed, callback, easing);
},
/**
* @name animate
* @type jQuery
* @param Hash params A set of style attributes that you wish to animate, and to what end.
- * @param Object speed A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
- * @param Function callback A function to be executed whenever the animation completes.
+ * @param String|Number speed (optional) A string representing one of the three predefined speeds ("slow", "normal", or "fast") or the number of milliseconds to run the animation (e.g. 1000).
+ * @param Function callback (optional) A function to be executed whenever the animation completes.
+ * @param String easing (optional) easing effect
* @cat Effects/Animations
*/
- animate: function(prop,speed,callback) {
+ animate: function(prop,speed,callback, easing) {
return this.queue(function(){
- this.curAnim = prop;
+ this.curAnim = jQuery.extend({}, prop);
for ( var p in prop ) {
- var e = new jQuery.fx( this, jQuery.speed(speed,callback), p );
+ var e = new jQuery.fx( this, jQuery.speed(speed,callback), p, easing );
if ( prop[p].constructor == Number )
e.custom( e.cur(), prop[p] );
else
});
jQuery.extend({
-
- setAuto: function(e,p) {
- if ( e.notAuto ) return;
-
- if ( p == "height" && e.scrollHeight != parseInt(jQuery.curCSS(e,p)) ) return;
- if ( p == "width" && e.scrollWidth != parseInt(jQuery.curCSS(e,p)) ) return;
-
- // Remember the original height
- var a = e.style[p];
-
- // Figure out the size of the height right now
- var o = jQuery.curCSS(e,p,1);
-
- if ( p == "height" && e.scrollHeight != o ||
- p == "width" && e.scrollWidth != o ) return;
-
- // Set the height to auto
- e.style[p] = e.currentStyle ? "" : "auto";
-
- // See what the size of "auto" is
- var n = jQuery.curCSS(e,p,1);
-
- // Revert back to the original size
- if ( o != n && n != "auto" ) {
- e.style[p] = a;
- e.notAuto = true;
- }
- },
speed: function(s,o) {
o = o || {};
* people. You've been warned.
*/
- fx: function( elem, options, prop ){
-
+ fx: function( elem, options, prop, easing ){
+
var z = this;
-
+
// The users options
z.o = {
duration: options.duration || 400,
complete: options.complete,
- step: options.step
+ step: options.step,
+ easing : easing || 'linear'
};
-
+
// The element
z.el = elem;
-
+
// The styles
var y = z.el.style;
-
+
+ // Store display property
+ var oldDisplay = jQuery.css(z.el, 'display');
+ // Set display property to block for animation
+ y.display = "block";
+ // Make sure that nothing sneaks out
+ y.overflow = "hidden";
+
// Simple function for setting a style value
z.a = function(){
if ( options.step )
options.step.apply( elem, [ z.now ] );
-
+
if ( prop == "opacity" )
jQuery.attr(y, "opacity", z.now); // Let attr handle opacity
else if ( parseInt(z.now) ) // My hate for IE will never die
y[prop] = parseInt(z.now) + "px";
-
- y.display = "block";
};
-
+
// Figure out the maximum number to run to
z.max = function(){
return parseFloat( jQuery.css(z.el,prop) );
};
-
+
// Get the current size
z.cur = function(){
var r = parseFloat( jQuery.curCSS(z.el, prop) );
return r && r > -10000 ? r : z.max();
};
-
+
// Start an animation from one number to another
z.custom = function(from,to){
z.startTime = (new Date()).getTime();
z.now = from;
z.a();
-
+
z.timer = setInterval(function(){
z.step(from, to);
}, 13);
};
-
+
// Simple 'show' function
z.show = function(){
if ( !z.el.orig ) z.el.orig = {};
// Remember where we started, so that we can go back to it later
z.el.orig[prop] = this.cur();
-
- var start = z.el.orig[prop];
-
+
+ z.o.show = true;
+
// Begin the animation
z.custom(0, z.el.orig[prop]);
if ( prop != "opacity" )
y[prop] = "1px";
};
-
+
// Simple 'hide' function
z.hide = function(){
if ( !z.el.orig ) z.el.orig = {};
// Begin the animation
z.custom(z.el.orig[prop], 0);
};
-
- // Remember the overflow of the element
- if ( !z.el.oldOverflow )
- z.el.oldOverflow = jQuery.css( z.el, "overflow" );
-
- // Make sure that nothing sneaks out
- y.overflow = "hidden";
-
+
+ //Simple 'toggle' function
+ z.toggle = function() {
+ if ( !z.el.orig ) z.el.orig = {};
+
+ // Remember where we started, so that we can go back to it later
+ z.el.orig[prop] = this.cur();
+
+ if(oldDisplay == 'none') {
+ z.o.show = true;
+
+ // Stupid IE, look what you made me do
+ if ( prop != "opacity" )
+ y[prop] = "1px";
+
+ // Begin the animation
+ z.custom(0, z.el.orig[prop]);
+ } else {
+ z.o.hide = true;
+
+ // Begin the animation
+ z.custom(z.el.orig[prop], 0);
+ }
+ };
+
// Each step of an animation
z.step = function(firstNum, lastNum){
var t = (new Date()).getTime();
-
+
if (t > z.o.duration + z.startTime) {
// Stop the timer
clearInterval(z.timer);
z.now = lastNum;
z.a();
- z.el.curAnim[ prop ] = true;
-
+ if (z.el.curAnim) z.el.curAnim[ prop ] = true;
+
var done = true;
for ( var i in z.el.curAnim )
if ( z.el.curAnim[i] !== true )
done = false;
-
+
if ( done ) {
// Reset the overflow
- y.overflow = z.el.oldOverflow;
-
+ y.overflow = '';
+
+ // Reset the display
+ y.display = oldDisplay;
+ if (jQuery.css(z.el, 'display') == 'none')
+ y.display = 'block';
+
// Hide the element if the "hide" operation was done
if ( z.o.hide )
y.display = 'none';
-
- // Reset the property, if the item has been hidden
- if ( z.o.hide ) {
- for ( var p in z.el.curAnim ) {
+
+ // Reset the properties, if the item has been hidden or shown
+ if ( z.o.hide || z.o.show )
+ for ( var p in z.el.curAnim )
if (p == "opacity")
jQuery.attr(y, p, z.el.orig[p]);
else
- y[ p ] = z.el.orig[p] + "px";
-
- // set its height and/or width to auto
- if ( p == 'height' || p == 'width' )
- jQuery.setAuto( z.el, p );
- }
- }
+ y[p] = '';
}
// If a callback was provided, execute it
// Execute the complete function
z.o.complete.apply( z.el );
} else {
+ var n = t - this.startTime;
// Figure out where in the animation we are and set the number
- var p = (t - this.startTime) / z.o.duration;
- z.now = ((-Math.cos(p*Math.PI)/2) + 0.5) * (lastNum-firstNum) + firstNum;
-
+ var p = n / z.o.duration;
+ //if the easing function exists then use it else use default linear easing
+ if (jQuery.easing[z.o.easing])
+ z.now = jQuery.easing[z.o.easing](p, n, firstNum, (lastNum-firstNum), z.o.duration);
+ else
+ z.now = ((-Math.cos(p*Math.PI)/2) + 0.5) * (lastNum-firstNum) + firstNum;
+
// Perform the next step of the animation
z.a();
}
};
+ },
+
+ /**
+ *
+ * @param Integer p period step in animation
+ * @param Integer n current time
+ * @param Mixed firstNum begin value
+ * @param Mixed delta change in
+ * @param Integer duration duration
+ */
+ easing : {
+ linear: function(p, n, firstNum, delta, duration) {
+ return ((-Math.cos(p*Math.PI)/2) + 0.5) * delta + firstNum;
+ },
+
+ easein: function(p, n, firstNum, delta, duration) {
+ return delta*(n/=duration)*n*n + firstNum;
+ },
+
+ easeou: function(p, n, firstNum, delta, duration) {
+ return -delta * ((n=n/duration-1)*n*n*n - 1) + firstNum;
+ },
+
+ easeboth: function(p, n, firstNum, delta, duration) {
+ if ((n/=duration/2) < 1)
+ return delta/2*n*n*n*n + firstNum;
+ return -delta/2 * ((n-=2)*n*n*n - 2) + firstNum;
+ },
+
+ bounceout: function(p, n, firstNum, delta, duration) {
+ if ((n/=duration) < (1/2.75)) {
+ return delta*(7.5625*n*n) + firstNum;
+ } else if (n < (2/2.75)) {
+ return delta*(7.5625*(n-=(1.5/2.75))*n + .75) + firstNum;
+ } else if (n < (2.5/2.75)) {
+ return delta*(7.5625*(n-=(2.25/2.75))*n + .9375) + firstNum;
+ } else {
+ return delta*(7.5625*(n-=(2.625/2.75))*n + .984375) + firstNum;
+ }
+ },
+
+ bouncein: function(p, n, firstNum, delta, duration) {
+ if (jQuery.easing.bounceout)
+ return delta - jQuery.easing.bounceout (p, duration - n, 0, delta, duration) + firstNum;
+ return firstNum + delta;
+ },
+
+ bounceboth: function(p, n, firstNum, delta, duration) {
+ if (jQuery.easing.bouncein && jQuery.easing.bounceout)
+ if (n < duration/2)
+ return jQuery.easing.bouncein(p, n*2, 0, delta, duration) * .5 + firstNum;
+ return jQuery.easing.bounceout(p, n*2-duration, 0, delta, duration) * .5 + delta*.5 + firstNum;
+ return firstNum + delta;
+ },
+
+ elasticin: function(p, n, firstNum, delta, duration) {
+ var a, s;
+ if (n == 0)
+ return firstNum;
+ if ((n/=duration)==1)
+ return firstNum+delta;
+ a = delta * 0.3;
+ p=duration*.3;
+ if (a < Math.abs(delta)) {
+ a=delta;
+ s=p/4;
+ } else {
+ s = p/(2*Math.PI) * Math.asin (delta/a);
+ }
+ return -(a*Math.pow(2,10*(n-=1)) * Math.sin( (n*duration-s)*(2*Math.PI)/p )) + firstNum;
+ },
+
+ elasticout:function(p, n, firstNum, delta, duration) {
+ var a, s;
+ if (n==0)
+ return firstNum;
+ if ((n/=duration/2)==2)
+ return firstNum + delta;
+ a = delta * 0.3;
+ p=duration*.3;
+ if (a < Math.abs(delta)){
+ a = delta;
+ s=p/4;
+ } else {
+ s = p/(2*Math.PI) * Math.asin (delta/a);
+ }
+ return a*Math.pow(2,-10*n) * Math.sin( (n*duration-s)*(2*Math.PI)/p ) + delta + firstNum;
+ },
+
+ elasticboth: function(p, n, firstNum, delta, duration) {
+ var a, s;
+ if (n==0)
+ return firstNum;
+ if ((n/=duration/2)==2)
+ return firstNum + delta;
+ a = delta * 0.3;
+ p=duration*.3;
+ if (a < Math.abs(delta)){
+ a = delta;
+ s=p/4;
+ } else {
+ s = p/(2*Math.PI) * Math.asin (delta/a);
+ }
+ if (n < 1) {
+ return -.5*(a*Math.pow(2,10*(n-=1)) * Math.sin( (n*duration-s)*(2*Math.PI)/p )) + firstNum;
+ }
+ return a*Math.pow(2,-10*(n-=1)) * Math.sin( (n*duration-s)*(2*Math.PI)/p )*.5 + delta + firstNum;
+ }
}
-});
+});
\ No newline at end of file