CompuServe Thread

#IPAS Catalog

6 messages in this thread
#25449From: bruce gorenOct 24, 1992 8:50 PM
Gary, Got the IPAS Catalog today, WOW ! Only one dissappointment , no Menger Sponges in the 3-D fractals, I'll get over it he said teary eyed — Grinning, Ducking, and Running ! Bruce
#25454From: Yost GroupOct 25, 1992 12:23 AM
Glad you got the catalog… (sorry about the lack of Menger Sponges… Menger Sponges? What's a Menger Sponge? 🙂 Now that the catalogs are out, and the docs are at the printer, I can actually take my first day off since August 6th. The computer's going off tonight, and it ain't gonna get turned back on till Monday morning. What a vacation! – G
#25552From: bruce gorenOct 26, 1992 7:17 PM
Gary, The Menger sponge is a special case of the Sierpenski gasket. I believe it can also be created using Barnsly style IFS matrices. A heavily recursive 3-D Menger sponge floating in space amongst a few asteriods would be a fine arena for close quarter battles ,<sigh> brings out the Starfighter in me just thinking about it. There was a movie at Siggraph a few years ago called "Fractal Fantasy" that toured a giant Menger Sponge revealing smaller fractal solids commuting through its corridors. Always dreamed of doing something similar on a PC. Gave up trying to build the Menger manually with Topas, couldn't figure out the proper IFS equation to do it in Fractint for DXF export, I'm betting IPAS will allow me to realize this goal sometime soon, someone wanna code this up ? Please, pretty please, pretty please with Koch curves on it . . . Bruce
#25576From: Yost GroupOct 26, 1992 11:07 PM
ohhh… THAT Menger Sponge! <g> We haven't gotten to that yet… – G
#25656From: james hydeOct 28, 1992 12:19 PM
Bruce, You'll be amazed at what the Silicon Garden can do! You might be able to tweak one of the existing curves to do what you want, and it doesn't require a compliler or anything else, just the book. "Check out" the Alogrithmic Beauty Of Plants, by Prusinkiewicz/Lindenmayer. I say check out because it's not for the non-mathmatically inclined. Besides, it will give you something to do while your waiting on the UPS person. James
#25807From: bruce gorenOct 29, 1992 10:48 PM
james, Have the book. Check out the Prusinkiewicz paper in this years' SIGGARPH proceedings, great Cactii and Broccoli . bruce