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   1 <!DOCTYPE html><html><head><title>Ext.fx.Easing | Ext JS 4.0 Documentation</title><script type="text/javascript" src="../ext-all.js"></script><link rel="stylesheet" href="../reset.css" type="text/css"><link rel="stylesheet" href="../scrollbars.css" type="text/css"><link rel="stylesheet" href="../docs.css" type="text/css"><link id="styleCss" rel="stylesheet" href="../style.css" type="text/css"><script type="text/javascript" src="../prettify.js"></script><link rel="stylesheet" href="../prettify.css" type="text/css"><!-- link(rel: 'stylesheet', href: req.baseURL + '/css/ext4.css', type: 'text/css')--><link rel="shortcut icon" type="image/ico" href="../favicon.ico"><!--[if IE]>
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  37 </script><div id="top-block" class="top-block"><h1 id="clsTitle" class="cls"><a href="../source/Easing.html#Ext-fx.Easing" target="_blank">Ext.fx.Easing</a></h1></div><div id="docContent"><div id="doc-overview-content"><div class="lft"><p>This class contains a series of function definitions used to modify values during an animation.
  38 They describe how the intermediate values used during a transition will be calculated. It allows for a transition to change
  39 speed over its duration. The following options are available:</p>
  40
  41 <ul>
  42 <li>linear The default easing type</li>
  43 <li>backIn</li>
  44 <li>backOut</li>
  45 <li>bounceIn</li>
  46 <li>bounceOut</li>
  47 <li>ease</li>
  48 <li>easeIn</li>
  49 <li>easeOut</li>
  50 <li>easeInOut</li>
  51 <li>elasticIn</li>
  52 <li>elasticOut</li>
  53 <li>cubic-bezier(x1, y1, x2, y2)</li>
  54 </ul>
  55
  56
  57 <p>Note that cubic-bezier will create a custom easing curve following the CSS3 transition-timing-function specification <code><a href="http://www.w3.org/TR/css3-transitions/#transition-timing-function_tag" rel="http://www.w3.org/TR/css3-transitions/#transition-timing-function_tag" class="docClass">http://www.w3.org/TR/css3-transitions/.transition-timing-function_tag</a></code>. The four values specify points P1 and P2 of the curve
  58 as (x1, y1, x2, y2). All values must be in the range [0, 1] or the definition is invalid.</p>
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