This version is intended to work with openjdk11+, @sampottinger is currently working on vanilla processing which will enable JRubyArt to catch up. Unfortunately there is a cockup in debian distributions, and it is currently safer to use the Oracle version on debian (Archlinux openjdk version is fine).

A slim layer to communicate with Processing from JRuby, features maven build. We have created a configuration free version of ruby processing, for processing-4.0+, where we include a modified processing core (public runPropane() to replace protected runSketch(). These jars are small enough to include in a gem distribution, and hence we do not require configuration. This has created a scriptable version, ie files get run direct from jruby. Currently JavaFX is unsupported again @sampottinger is currently working on vanilla processing to use OpenJFX. It would be nice make use of java modules, but I think we should let jruby project do that first (unless processing.org beat them to it).

adjust above for your OS/distro setup.

• jdk-11.0.2+
• jruby-9.2.7.0
• mvn-3.5.4+

rake rake gem rake javadoc

jgem install propane # from rubygems jgem install propane-3.3.0-java.gem # local install # Alternative jruby -S gem install propane # from rubygems jruby -S gem install propane-3.3.0-java.gem # local install

To check version and confirm gem bin files are on your path (also checks JDK version)

propane --version

A propane sketch:-

require 'propane' class FlashingLightsSketch < Propane::App def settings size(800, 600) end def setup sketch_title 'Flashing Light Sketch' end def draw background(rand(255), rand(255), rand(255)) end end FlashingLightsSketch.new

Create template sketches with the sketch creator tool

propane -c my_sketch 200 200 # for default renderer propane -c my_sketch 200 200 p2d # for opengl 2D renderer propane -c my_sketch 200 200 p3d # for opengl 3D renderer

To run sketches

jruby my_sketch.rb # or use script to run sketches from atom

To install the sound and video libraries ~/.propane/libraries. Depends on wget.

propane --install sound propane --install video

Other java libraries can be manually installed to the same folder (no need for processing ide)

See gh-pages for more detailed instructions and much more.

Worked Examples more to follow, feel free to add your own, especially ruby-2.4

• syntax now we can. To install the samples. The samples get copied to ~/propane_samples. Depends on wget.

propane --install samples

please move existing propane_samples if you wish to keep them. The current release features several PixelFlow glsl library examples, including a few shadertoy demos as sketches.