math_demo

An example of how you might develop an app as a gem with propane

to install

jgem install math_demo

to run

math_demo

Now you've installed propane! Get more examples to try:-

propane --install samples

The samples get copied to ~/propane_samples, NB: depends on wget. for a simple demo of circumcircle math see ~/propane_samples/processing_app/library/vecmath/vec2d/circumcircle_sketch.rb or to run samples as a demo:-

cd ~/propane_samples
rake
# Some sketches require opengl which doesn't get installed on windows.
# For other libraries see below

Or to run individual sketches cd to directory and:-

cd ~/propane_samples/processing_app/library/vecmath/vec2d
jruby circumcircle_sketch.rb

Changing directories is particulary important for sketches with extra files eg data or relative *.rb files.

Or explore using atom editor and use script plugin to run (NB: make sure the file type is Ruby or JRubyArt, sketches wont run with type as Ruby on Rails) also make sure jruby is on your path.

Propane documentation

Propane web-site

Scope for improvement

In theory we should be able to use nmatrix (jruby version) in the matrix calculation, possibly on the gpu https://groups.google.com/forum/#!topic/sciruby-dev/CIC0EuTRNAk