This is a proof of concept for a live drawing app in Ruby with the Ruby-Processing Gem (based on processing-2.0.1, and jruby-1.7.4)
Get inspired by Bret Victor or join the project with your own idea..
There is a stand alone app to play with without need of installing all stuff. With "ellipse 50, 50, 80, 80" or "rect/line/fill" you can draw and with mouse dragging change the values.
Start Ruby-Processing with "rp5 watch simple_live_coding.rb". This reloads "simple_live_coding.rb" after safing and you can implement your ideas in this file without need to restart. After implementation of the new feature just copy your code in a seperate file in the "main" directory and do "require_relative" for the file.
This is live coding a live coding app...