this is really old code that you should not look at, written sometime in late 2001 / early 2002. Index of /raytracer 
Icon  Name                    Last modified      Size  Description
[DIR] Parent Directory                             -   
[IMG] beforeantialias.png     16-Apr-2003 20:16   39K  
[DIR] crapray-0.3/            16-Apr-2003 20:16    -   
[DIR] crapray-0.4/            16-Apr-2003 20:16    -   
[IMG] firstimage.png          16-Apr-2003 20:16  2.8K  
[IMG] firstphong.png          16-Apr-2003 20:16   79K  
[IMG] firstreflections.png    16-Apr-2003 20:16   38K  
[IMG] morepathstuff.png       16-Apr-2003 20:16   90K  
[TXT] old.html                16-Apr-2003 20:17  2.0K  
[IMG] pathtracing.png         16-Apr-2003 20:16   16K  
[IMG] pbox.png                16-Apr-2003 20:17   68K  
[IMG] random1.png             16-Apr-2003 20:16   97K  
[IMG] random2.png             16-Apr-2003 20:16   84K  
[IMG] random3.png             16-Apr-2003 20:16   63K  
[IMG] randomcrap.png          16-Apr-2003 20:16   20K  
[IMG] randomspheres.png       16-Apr-2003 20:16   28K  
[IMG] randomstuff.png         16-Apr-2003 20:16  4.8K  
[IMG] raybox.png              16-Apr-2003 20:17   93K  
[IMG] simplereflections-sm..> 16-Apr-2003 20:16   27K  
[IMG] simplereflections.png   16-Apr-2003 20:16  138K