https://github.com/patrys/jstimeline

Animate objects using a single global timer
https://github.com/patrys/jstimeline

Last synced: 21 days ago
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Animate objects using a single global timer

• Host: GitHub
• URL: https://github.com/patrys/jstimeline
• Owner: patrys
• License: mit
• Created: 2010-09-16T08:06:29.000Z (about 14 years ago)
• Default Branch: master
• Last Pushed: 2013-11-05T11:50:07.000Z (about 11 years ago)
• Last Synced: 2024-10-04T13:14:38.773Z (about 1 month ago)
• Language: JavaScript
• Homepage:
• Size: 107 KB
• Stars: 22
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
jsTimeline

==========

(And why it's a lie.)

What?

-----

Ever wondered if creating tons of JavaScript timers and intervals hurt your performance? Well, I did. Maybe your PC is pure awesome but what about portable devices?

Ever wondered why all these tweening libraries do polynomial math for _each and every value_ you want to change on _each and every step_? Well, I did. Easing is nothing more than a fancy name for a silly scaling function. It should take one parameter and return one value.

Easing should be _easy_. Take that, jQuery:

```javascript

function(pos) {

    return pos * pos * pos;

}

```

Ever wished you could stop time? Or step through time to debug that piece of animation you've spent last night hacking on? I did. How about being able to attach your timeline to a slider widget?

But what does it do?

--------------------

You could say that it lets you animate stuff over time but that would be like calling your laptop "the thing that displays cute kittens and naked people."

It certainly can animate stuff. Over any range of values. Finite or not. Discrete or continuous. Time is just the most obvious choice.

It can tween things using the duration and easing of your choice.

It does _not_ alter any values directly, you probably already have a framework to do that. We simply ask for a callback and you change any attributes you want from there.

It is capable of shutting itself down when there's nothing to do. Who wants to do nothing at 50 frames per second anyway?

It does use your browser's native requestAnimationFrame() API when present.

It does not use any JavaScript frameworks or libraries.