Animating Motion Along a Curved Path

The YUI Animation Utility allows you to animate the motion of an HTMLElement along a curved path using control points.

For this example, we will animate the position of a <div> element named demo. The points attribute, introduced in the YAHOO.util.Motion subclass, accepts an optional control field of one or more control points

Add a little style so that we can see the animation in action:

Create the demo element and a button to run the animation:

Now we create an instance of YAHOO.util.Motion, passing it the element we wish to animate, and the points attribute (an array of [x, y] positions), with the point we are animating to, and the control points that will influence the path:

This is an example of animating the motion HTMLElement along a curved path.