dleigh@hplabsz.HPL.HP.COM (Darren Leigh) (06/30/87)
Has anyone had any experience with Kajiya's method for intersecting a parametric surface with a ray. It was outlined in _Computer_Graphics_, July 1982 in an article called "Ray Tracing Parametric Patches". I got most of the algorithm done and then was trying to work out the original polynomials for the general case. They are huge so I used Macsyma. Macsyma died on me, claiming that it was out of memory. Those polynomials are HUGE (yeah, and maybe my Macsyma implementation was screwed up, but their still big). Anyway, is there an easier way? Am I missing anything obvious? Any help would be vastly appreciated. Also any Macsyma help on polynomials would be good. Are you a Macsyma guru? Send me your address! Thanks in advance. Darren Leigh dlleigh@media-lab.mit.edu or dleigh@hplabs.hp.com