[fluxus] plt_scheme branch commits

[dave]

Hi all,

I've got the initial plt version working pretty well now, and in cvs -
but don't get excited, the only graphics commands it supports so far are
build-cube and draw-cube. However, the vector, matrix and quat maths
commands are all ported, and every-frame works

So a lot of the fiddly internals of the application are now ported to
scheme - the camera movement code mainly at the moment. To run the app
requires the fluxus-startup.scm script - which ties the callback
functions from the application (namely input events from mouse or
keyboard, the per-frame render call and window reshape events) to the
graphics engine, which is a module called fluxus-engine.so which is
built seperately (in modules/). 

I've still got to figure out a lot of things to do with how to package
and install the plt modules, and the various scheme scripts involved
along with the documentation, but most of the hard coding stuff is
resolved I think. 

cheers,

dave