While searching for an implementation of the Barnsley's Fern fractal i came across a implementation that has .pde extension which programming language uses this extension?
PDE file is a PowerDesk Encrypted File. VCOM PowerDesk is a file manager that has all the features of Windows Explorer. When you encrypt a file or folder with, PowerDesk creates a new file with a PDE extension.
This code is from Processing.org an open source Java based IDE. You can find it Processing.org. The Arduino IDE also uses this extension, although they run on a hardware board.
EDIT - And yes it is C based, used mostly for art or live media presentations.
It isn't C code, it's an example of "Processing" - an open source language aimed at generating images. Take a look here
Bad news I'm afraid (or maybe great news?) : it isn't C code, it's an example of "Processing" - an open source language aimed at programming images. Take a look here
Looks very cool.