Kairos is a Pixlib extension that mainly rework on the transitions package to offer a new way to handle animations in your projects.

The main idea behind that project is that when we build animations in our games, sites, or applications, the speed of animations may changes according to the browser and/or the computer performances. Why not having a framerate-independant animation system ? Where tweens, movieclips and games routines always run at the same speed, even if framerate is different than the compiled one.

To realize that, all animated objects use a time bias in their algorithm. Basically, at each frame, objects compute animations according to the last frame duration. In that way, animations are not define in terms of unit/frames as we used to do, but as unit/seconds.

Please look at the wiki to a detailled description of Kairos mechanism and components.