32 years is quite a long time in computing terms! Both the computing tech and raytracing/graphics theory and algorithms have changed significantly over that ti

32 years is quite a long time in computing terms! Both the computing tech and raytracing/graphics theory and algorithms have changed significantly over that time, with better algorithms and much more powerful computing resources allowing more brute-force/accurate stuff to be more practically done. Writing a raytracer/renderer is also rather addictive, and it's quite cool writing something which produces something else (as is writing compilers).