A suite of javascript classes for working with the html5 canvas. Provides graphics, tweening, sounds, preloading resources. Nicely implemented. Above demo implements a container (2 shapes), an array of 400 shapes, tweening, text, z-indexing, time-based animation, sound preloading, mouse and touch events. Click / tap the blue circle+square to hear a closed hihat.
Client animation pauses when tab loses focus, and restarts at same point when focus is regained. (Blur/Focus on all loop events).