Decyphering the Business Card Raytracer

1 · Fabien · Sept. 21, 2013, 1:08 a.m.
I recently came across Paul Heckbert's business card raytracer. For those that have never heard of it: It is a very famous challenge in the Computer Graphics field that started on May 4th, 1984 via a post on comp.graphics by Paul Heckbert ( More about this in his article "A Minimal Ray Tracer" from the book Graphics Gems IV). The goal was to produce the source code for a raytracer...that would fit on the back of a business card. Andrew Kensler's version is mesmerizing and one ...