This is a simple program written to demonstrate the following principles:

• Functional Reactive Programming using reactive-banana
• Using GTK in Haskell
• Using OpenGL in Haskell
• Using GTKGLExt in Haskell

Development of this program is largely happening on Debian GNU/Linux's "unstable" branch. reactive-solar.cabal contains build-depends for the Haskell side of things, but base libraries they depend on will need to be installed as well. Under Debian, the package names of these are:

• libgtk2.0-dev
• libgtkglext1-dev
• libftgl2-dev

Similar packages can be found on other Linux platforms.

As for GHC, I recommend installing the base system through Debian's package management then using cabal to install all other dependencies.

GHC, GTK+ and GTKGLExt can be installed through homebrew and then Haskell dependencies can be handled with cabal. The homebrew package names are:

• haskell-platform
• gtk+
• gtkglext

This program uses some Haskell libraries that are not in Hackage:

• reactive-banana-gtk
• a fork of FTGL
  • Requires FTGL library (see Linux Preqs)

Download them (using git) and install by running cabal-install from its top level directory.

cabal should handle the rest of the Haskell prerequisites. Run cabal configure && cabal build to build the program in place.

Currently, this program uses data files, and cabal's data-files support has not been integrated in yet, so cabal install will not do the right thing and should not be used. Load reactive-solar.hs into ghci and type main to run the program for the time being.

Author: James Curbo [email protected]

Written for the author's Capstone Research Project, part of the degree plan for earning a Masters of Science in Computer Science at Capitol College in Laurel, MD.

This project is available at both bitbucket and github.