webgui/www/extras/yui/docs/YAHOO.util.Easing.html
JT Smith 20f8df1291 upgrading to YUI 2.6
data tables are going to need some work yet, but the other stuff seems to be working 100%
2008-10-22 23:53:29 +00:00

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<title>API: animation YAHOO.util.Easing (YUI Library)</title>
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<body id="yahoo-com">
<div id="doc3" class="yui-t2">
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<a href="http://developer.yahoo.com/yui/"><h1>Yahoo! UI Library</h1></a>
<h3>animation&nbsp; <span class="subtitle">2.6.0</span></h3>
<p>
<a href="./index.html">Yahoo! UI Library</a>
&gt; <a href="./module_animation.html">animation</a>
&gt; YAHOO.util.Easing
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<h2>
Class <b>YAHOO.util.Easing</b>
<span class="extends">
</span>
<span class="extends">
</span>
</code>
</h2>
<!-- class tree goes here -->
<div class="summary description">
Singleton that determines how an animation proceeds from start to end.
</div>
<div class="section method details">
<h3 id="methods">Methods</h3>
<div class="content">
<div class="">
<h4>
<a name="method_backBoth">backBoth</a></h4>
<div class="detail">
<code>
Number
<strong>backBoth</strong>
(
t
,
b
,
c
,
d
,
s
)
</code>
<div class="description">
Backtracks slightly, then reverses direction, overshoots end,
then reverses and comes back to end.
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
<dd>
<code>s &lt;Number&gt;</code>
Overshoot (optional)
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_backIn">backIn</a></h4>
<div class="detail">
<code>
Number
<strong>backIn</strong>
(
t
,
b
,
c
,
d
,
s
)
</code>
<div class="description">
Backtracks slightly, then reverses direction and moves to end.
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
<dd>
<code>s &lt;Number&gt;</code>
Overshoot (optional)
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_backOut">backOut</a></h4>
<div class="detail">
<code>
Number
<strong>backOut</strong>
(
t
,
b
,
c
,
d
,
s
)
</code>
<div class="description">
Overshoots end, then reverses and comes back to end.
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
<dd>
<code>s &lt;Number&gt;</code>
Overshoot (optional)
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_bounceBoth">bounceBoth</a></h4>
<div class="detail">
<code>
Number
<strong>bounceBoth</strong>
(
t
,
b
,
c
,
d
)
</code>
<div class="description">
Bounces off start and end.
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_bounceIn">bounceIn</a></h4>
<div class="detail">
<code>
Number
<strong>bounceIn</strong>
(
t
,
b
,
c
,
d
)
</code>
<div class="description">
Bounce off of start.
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_bounceOut">bounceOut</a></h4>
<div class="detail">
<code>
Number
<strong>bounceOut</strong>
(
t
,
b
,
c
,
d
)
</code>
<div class="description">
Bounces off end.
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_easeBoth">easeBoth</a></h4>
<div class="detail">
<code>
Number
<strong>easeBoth</strong>
(
t
,
b
,
c
,
d
)
</code>
<div class="description">
Begins slowly and decelerates towards end. (quadratic)
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_easeBothStrong">easeBothStrong</a></h4>
<div class="detail">
<code>
Number
<strong>easeBothStrong</strong>
(
t
,
b
,
c
,
d
)
</code>
<div class="description">
Begins slowly and decelerates towards end. (quartic)
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_easeIn">easeIn</a></h4>
<div class="detail">
<code>
Number
<strong>easeIn</strong>
(
t
,
b
,
c
,
d
)
</code>
<div class="description">
Begins slowly and accelerates towards end. (quadratic)
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_easeInStrong">easeInStrong</a></h4>
<div class="detail">
<code>
Number
<strong>easeInStrong</strong>
(
t
,
b
,
c
,
d
)
</code>
<div class="description">
Begins slowly and accelerates towards end. (quartic)
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_easeNone">easeNone</a></h4>
<div class="detail">
<code>
Number
<strong>easeNone</strong>
(
t
,
b
,
c
,
d
)
</code>
<div class="description">
Uniform speed between points.
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_easeOut">easeOut</a></h4>
<div class="detail">
<code>
Number
<strong>easeOut</strong>
(
t
,
b
,
c
,
d
)
</code>
<div class="description">
Begins quickly and decelerates towards end. (quadratic)
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_easeOutStrong">easeOutStrong</a></h4>
<div class="detail">
<code>
Number
<strong>easeOutStrong</strong>
(
t
,
b
,
c
,
d
)
</code>
<div class="description">
Begins quickly and decelerates towards end. (quartic)
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_elasticBoth">elasticBoth</a></h4>
<div class="detail">
<code>
Number
<strong>elasticBoth</strong>
(
t
,
b
,
c
,
d
,
a
,
p
)
</code>
<div class="description">
Snap both elastic effect.
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
<dd>
<code>a &lt;Number&gt;</code>
Amplitude (optional)
</dd>
<dd>
<code>p &lt;Number&gt;</code>
Period (optional)
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_elasticIn">elasticIn</a></h4>
<div class="detail">
<code>
Number
<strong>elasticIn</strong>
(
t
,
b
,
c
,
d
,
a
,
p
)
</code>
<div class="description">
Snap in elastic effect.
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
<dd>
<code>a &lt;Number&gt;</code>
Amplitude (optional)
</dd>
<dd>
<code>p &lt;Number&gt;</code>
Period (optional)
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
<div class="">
<h4>
<a name="method_elasticOut">elasticOut</a></h4>
<div class="detail">
<code>
Number
<strong>elasticOut</strong>
(
t
,
b
,
c
,
d
,
a
,
p
)
</code>
<div class="description">
Snap out elastic effect.
</div>
<div class="description">
<dl>
<dt>Parameters:</dt>
<dd>
<code>t &lt;Number&gt;</code>
Time value used to compute current value
</dd>
<dd>
<code>b &lt;Number&gt;</code>
Starting value
</dd>
<dd>
<code>c &lt;Number&gt;</code>
Delta between start and end values
</dd>
<dd>
<code>d &lt;Number&gt;</code>
Total length of animation
</dd>
<dd>
<code>a &lt;Number&gt;</code>
Amplitude (optional)
</dd>
<dd>
<code>p &lt;Number&gt;</code>
Period (optional)
</dd>
</dl>
<dl>
<dt>Returns:
<code>
Number
</code></dt>
<dd>The computed value for the current animation frame</dd>
</dl>
</div>
</div>
<hr />
</div>
</div>
</div>
</div>
</div>
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<h4>Modules</h4>
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<li class=""><a href="module_autocomplete.html">autocomplete</a></li>
<li class=""><a href="module_button.html">button</a></li>
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<li class=""><a href="module_datatable.html">datatable</a></li>
<li class=""><a href="module_dom.html">dom</a></li>
<li class=""><a href="module_dragdrop.html">dragdrop</a></li>
<li class=""><a href="module_editor.html">editor</a></li>
<li class=""><a href="module_element.html">element</a></li>
<li class=""><a href="module_event.html">event</a></li>
<li class=""><a href="module_get.html">get</a></li>
<li class=""><a href="module_history.html">history</a></li>
<li class=""><a href="module_imagecropper.html">imagecropper</a></li>
<li class=""><a href="module_imageloader.html">imageloader</a></li>
<li class=""><a href="module_json.html">json</a></li>
<li class=""><a href="module_layout.html">layout</a></li>
<li class=""><a href="module_logger.html">logger</a></li>
<li class=""><a href="module_menu.html">menu</a></li>
<li class=""><a href="module_paginator.html">paginator</a></li>
<li class=""><a href="module_profiler.html">profiler</a></li>
<li class=""><a href="module_profilerviewer.html">profilerviewer</a></li>
<li class=""><a href="module_resize.html">resize</a></li>
<li class=""><a href="module_selector.html">selector</a></li>
<li class=""><a href="module_slider.html">slider</a></li>
<li class=""><a href="module_tabview.html">tabview</a></li>
<li class=""><a href="module_treeview.html">treeview</a></li>
<li class=""><a href="module_uploader.html">uploader</a></li>
<li class=""><a href="module_yahoo.html">yahoo</a></li>
<li class=""><a href="module_yuiloader.html">yuiloader</a></li>
<li class=""><a href="module_yuitest.html">yuitest</a></li>
</ul>
</div>
<div class="module">
<h4>Classes</h4>
<ul class="content">
<li class=""><a href="YAHOO.util.Anim.html">YAHOO.util.Anim</a></li>
<li class=""><a href="YAHOO.util.AnimMgr.html">YAHOO.util.AnimMgr</a></li>
<li class=""><a href="YAHOO.util.Bezier.html">YAHOO.util.Bezier</a></li>
<li class=""><a href="YAHOO.util.ColorAnim.html">YAHOO.util.ColorAnim</a></li>
<li class="selected"><a href="YAHOO.util.Easing.html">YAHOO.util.Easing</a></li>
<li class=""><a href="YAHOO.util.Motion.html">YAHOO.util.Motion</a></li>
<li class=""><a href="YAHOO.util.Scroll.html">YAHOO.util.Scroll</a></li>
</ul>
</div>
<div class="module">
<h4>Files</h4>
<ul class="content">
<li class=""><a href="Anim.js.html">Anim.js</a></li>
<li class=""><a href="AnimMgr.js.html">AnimMgr.js</a></li>
<li class=""><a href="Bezier.js.html">Bezier.js</a></li>
<li class=""><a href="ColorAnim.js.html">ColorAnim.js</a></li>
<li class=""><a href="Easing.js.html">Easing.js</a></li>
<li class=""><a href="Motion.js.html">Motion.js</a></li>
<li class=""><a href="Scroll.js.html">Scroll.js</a></li>
</ul>
</div>
<div class="module">
<h4>Methods</h4>
<ul class="content">
<li class=""><!--<code>Number</code>-->
<a href="#method_backBoth">backBoth</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_backIn">backIn</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_backOut">backOut</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_bounceBoth">bounceBoth</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_bounceIn">bounceIn</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_bounceOut">bounceOut</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_easeBoth">easeBoth</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_easeBothStrong">easeBothStrong</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_easeIn">easeIn</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_easeInStrong">easeInStrong</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_easeNone">easeNone</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_easeOut">easeOut</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_easeOutStrong">easeOutStrong</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_elasticBoth">elasticBoth</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_elasticIn">elasticIn</a>
</li>
<li class=""><!--<code>Number</code>-->
<a href="#method_elasticOut">elasticOut</a>
</li>
</ul>
</div>
</div>
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