Rick wrote:
> 
> wrong NG i know! but hey :P
> 
> I have a pet project on the go, a small raytracer that will fit on a C64 and
> render a simple scene, 3 spheres and a plane!
> 
> I am looking for code to small raytracers, 4k demo entries and any guides to
> making a very simple stripped down, bare bones raytracer
> 
> There are conciderable platform limitations, I only have about 40k to play
> with and 1mhz cpu to do it with, not to mention 16 whole cols, and an
> incedably low graphics resoloution.
> 
> Any help?
> 
> Rick

My housemate wrote a ray tracer in BASIC for the C-64 many years ago. 
Greyscale, only did planes.  Not sure whether he has the code anywhere,
though he did stumble across some printouts a few months back, which he
showed off with great pride.

Graphics Gems IV has the C code for a minimal ray-tracer.  It's written
in C and runs just over two pages.  Unfortunately, it gives absolutely
no consideration to speed, since most ray-tracing optimization
techniques ultimately involve a space-time tradeoff, and they were
shooting for minimal space.  Still, it's a place to start.  The source
code is included in an archive that can be found at
http://www.acm.org/tog/GraphicsGems/gemsiv.zip

-- 
Mark Gordon
mtg### [at] povrayorg

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