Here's two simple ray-tracers that I've taken from public domain archive sites and compiled successfully on my NeXT. I've also included a Viewer for the output files that will even convert the files to .tiff! (Just be sure that the output files have a '.pic' extension, and then the viewer program, if on your current search path, will be automatically launched when you double click a '.pic' file.) All sources are included. Have fun with these! -Don Yacktman
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.
