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PiCrate

Version for RaspberryPI Stretch and Oracle JDK8, will probably also work on OpenJDK11+ but see PiCrate-2.0.0 for version targetting Buster. Create processing sketches in ruby on raspberry-pi and linux (this project is a parallel development of propane targetting the raspberry-pi, but will initially be developed on a regular linux box). The aim is to produce a gem installable app that can be run with jruby, with minimal dependencies. Drop the C and you get pirate, or and an e and get PiCreate, a happy coincidence?

To install from rubygems

jgem install picrate -v 1.1.0 # NB: important to specify version

To Build and Test

Clone this repo:-

Requires java to build, but uses a maven wrapper so you don't need to install maven. Suggest build/test on regular linux box, but is designed for use on RaspberryPI 3B+. Needs installed jruby to test/run.

cd PiCrate
rake # assumes an installed version of vanilla processing
jgem install picrate-1.1.0-java.gem

To create a template sketch:-

picrate -c my_sketch 200 200

Edit sketch (vim is a good choice):-

#!/usr/bin/env jruby
# frozen_string_literal: false
require 'picrate'

class MySketch < Processing::App
  def settings
    size 200, 200
  end

  def setup
    sketch_title 'My Sketch'
  end

  def draw
    background 0
    fill 0, 0, 200
    ellipse 100, 100, 90, 70
  end
end

MySketch.new

Run Sketch

jruby --dev my_sketch.rb # --dev flag speeds start-up