Ruby-Newton is a Ruby wrapper for the NewtonGameDynamics physics engine ( http://newtondynamics.com/ ) It brings object-oriented real-time animated physics simulations to Ruby-enabled applications (e.g. 3D modeling tool with interactive scripting support
Ruby scripts grow 3D fractals and render them with PovRay, OpenInventor and YASRT. Includes (rough) ports of Lauren Lapre's LPARSER to GNU C++. Includes a RubyTk "sketch" output for quick previews as you edit a script.