This is a direct port of my old Firedemo effect. Made to celebrate the 20th anniversary :)

See it in action at http://www.iguanademos.com/Jare/files/Fire/

Works great in IE9+, Firefox 20+ (Win and Android) and iOS Safari. Chrome on both Win and Android is rather slow, not sure why. Android Dolphin only updates a subrect of the canvas.

(C) 2013 by Javier Arevalo

This code is released under the MIT license.