Installing ruby processing on macOS

Step one install homebrew, this is required because Apple are willfully stupid.

Full instructions at homebrew wiki.

ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"

or if already installed brew upgrade to make sure you are up to date

Step two install wget, unless you've already installed it

brew install wget

Step three install Oracle java, you absolutely do not want any Apple version of java (openjdk8 should also work, but is probably best left to experts).

NB: this is not required for vanilla processing (which includes its own version of Oracles jdk1.7.0_XX) but it is required for jruby and ruby-processing

Step four install processing 2.x (for processing-3.0 see JRubyArt), give a donation to processing.org if you like

Use configRP5.pde to create .rp5rc yaml configuration file (copy to processing ide and run the sketch). Or just use your favourite editor to edit ~/.rp5rc.

Step five install rvm, I hate it, but I'm on linux

But most people seem to need it or something similar (rbenv is probably better, it doesn't override cd and gem commands to enable some of its functionality). In both cases you are relinquishing control of your system.

curl -sSL https://get.rvm.io | bash -s stable

Step six install jruby

rvm install jruby

If you prefer not to install jruby you should set JRUBY: "false" in the ~/.rp5rc config. Otherwise use --nojruby flag when running sketches. Without jruby installed, using other gems with jruby is tricky....

Step seven install ruby-processing

Using MRI ruby, you don't need jruby here

You can use jruby though if you are keeping jruby and ruby gems separate (like with rvm).

gem install ruby-processing

Step eight install jruby-complete

Uses wget to download.

rp5 setup install

Step nine unpack the samples

rp5 setup unpack_samples

Step ten run the demos

cd rp_samples
# to run contributed sketches...
rake
# or to run shader sketches...
rake shaders
# or to run vecmath sketches...
rake vecmath
# or just explore all the many other sketches

Step eleven unless you have a favourite editor install jedit

brew install jedit

Install the console plugin and anything else you fancy from jedit (the ruby-plugin is out of date but can be used but it doesn't recognize the latest syntax). Use the macro and commando file here https://gist.github.com/monkstone/9636961 to configure jedit for ruby-processing. Back to getting started.