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    <p>First off, you need to use an easing animation that starts and ends with the same "angle". If you look at the different <a href="http://jqueryui.com/resources/demos/effect/easing.html" rel="nofollow">easing options</a>, <code>swing</code>, <code>easeInOutQuad</code> and <code>easeInOutSine</code> are some of the valid options.</p> <p>To calculate an approximation of the angle, you can look at the mail icon's current position and its next position (in the next animation frame). To get a good approximation you need to "manually" calculate the current and next position using the easing function. This also means you need to control the animation manually.</p> <p>Here's a code snippet, and you can also see it on <a href="http://jsfiddle.net/BjVHW/10/" rel="nofollow">JSFiddle</a>.</p> <pre><code>// Init dom elements var $start = $('#start'); var $end = $('#end'); var $mail = $('#mail'); // Get position coordinates var startPos = $start.offset(); var endPos = $end.offset(); // Angle calculation var getAngle = function(currX, currY, endX, endY) { var angle = Math.atan2(currX - endX, currY - endY) * (180 / Math.PI); if (angle &lt; 0) { angle = Math.abs(angle); } else { angle = 360 - angle; } return angle; }; // Animate var maxframe = 1000; $({frame: 0}).animate({frame: maxframe}, { easing: "linear", duration: 1000, // Executed each "animation" frame, so we rotate here. step: function() { var easing = $.easing.easeInOutQuad; var left = easing(0, this.frame, startPos.left, endPos.left - startPos.left, maxframe); var leftNext = easing(0, this.frame+1, startPos.left, endPos.left - startPos.left, maxframe); var top = startPos.top + (endPos.top - startPos.top) * this.frame / maxframe; var topNext = startPos.top + (endPos.top - startPos.top) * (this.frame + 1) / maxframe; var angle = getAngle(left, top, leftNext, topNext); $mail.offset({left: left, top: top}); $mail.css('transform', 'rotate(' + angle + 'deg)'); }, // Set the final position complete: function() { $mail.offset($end.offset()); $mail.css('transform', ''); } }); </code></pre>
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    1. POJavascript point to point angle calculation
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    1. USAnders Carstensen
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    1. COThese formulas will cause the mail icon to always try and point directly towards the final point, not necessarily tangent to its current path.
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    2. COHi Seth. No, it doesn't always point towards the final point. You can see this by making a more complex easing function. See this [JSFiddle](http://jsfiddle.net/Mn88E/1/).
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    3. COYou are right. I thought your code snippet was the same as what was mentioned earlier (which does always point at the final point). This works perfectly on JSFiddle.
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