jet@karazm.math.uh.edu (J. Eric Townsend) (09/13/90)
Just read "ARTS: Accelerated Ray-Tracing System" by Fujimoto, Tanaka and Iwata (IEEE CG&A, Apr 86). They talk about using SEADS (Spatially Enumerated Auxiliary Data Structure) with a 3D DDA. My question is this: What is SEADS, really? From what I can tell it's just a 3D array. If that's true, there's no way they could have run their test cases on their equipment in the times they show. A 512x512x512 array on a 4Mb Vax 750? Maybe it's an octree, but they talk about how much better SEADS is than an octree. If anyone knows of where I can find an implementation of SEADS, that would be best. In any case, if you know anything more about this, please let me know... -- J. Eric Townsend -- University of Houston Dept. of Mathematics (713) 749-2120 Internet: jet@uh.edu Bitnet: jet@UHOU Skate UNIX(r)