32 years is quite a long time in computing terms!<p>Both the computing tech and raytracing&#x2F;graphics theory and algorithms have changed significantly over that time, with better algorithms and much more powerful computing resources allowing more brute-force&#x2F;accurate stuff to be more practically done.<p>Writing a raytracer&#x2F;renderer is also rather addictive, and it&#x27;s quite cool writing something which produces something else (as is writing compilers).