realtime voxel raytracer
download a) the appropriate tgz file and b) the file "install.UnixAos" from http://www.informatik.uni-bremen.de/~fld/UnixAos/rev.5500/
as root: chmod +x install.UnixAos install.UnixAos {Solaris,Linux,Darwin}Aos.tgz
clone this repository
cd spasim
aos