js9b+@andrew.cmu.edu (Jon C. Slenk) (11/28/88)
Hi all. I have had many replies about the 3d stuff - thank you one and all for taking the time to write. I will _try_ to set up a mailing list (I'm only a Freshman - these things are new to me... :-)) so that we can get all this off the bboard. I must apologize to those who feel I and others have been wasting time/space on basics. Thank you for pointing out the benefits of mailing lists. Please, keep the basic 3d comments off the bboard - only really neat stuff should be posted. Else email me. I will be doing my best to set up a mailing list - the problem is that I am _screwed_ as far as homework and exams go... Well, thanks once again for all the input! Sincerely, Jon Slenk / js9b CMU.
js9b+@andrew.cmu.edu (Jon C. Slenk) (03/10/89)
Howdy all! Seeing how there is all this discussion about 3d forced by people, how about some discussion about 3d on/by computers. There are a couple of methods that I know of: the standard two colors and respective filters, the polarized (not sure how to do this on a computer exactly) way, and the swapping way. The first works well with multi-colored computers (ie Amiga, Mac II extended, VGA etc.) because you can match the colors to the filters, not the filters to the colors. I wonder why 3d never caught on for games etc. If you get the proper filters, you should be able to do 3d on any color computer, no? The third method has special 'specs which shutter out images to either eye in time with the screen swapping so each eye sees one screen map, and if this is done quickly enough, one sees 3d. Effective, but takes some seriousish hardware. Why is 3d so uncommon? Try using a color computer (Amiga whatever) and making the two color pictures; define a brush with red and blue/green whatever and draw with it. Then change the distance between the two colors, and repeat. Makes all sorts of neat depths to the picture. Perhaps 3d is moot seeing how a proper output device (ie all 4096 colors or whatever) costs ~$5000 last I heard... Sincerely, Jon Slenk / js9b CMU an employee of Academic Computing - "he loved Big Brother" PS: standard disclaimers are all included. You just can't see them :-)
eugene@eos.UUCP (Eugene Miya) (03/11/89)
In article <kY5rr5y00Vs9B08GhF@andrew.cmu.edu> js9b+@andrew.cmu.edu (Jon C. Slenk) writes: >Howdy all! High! >Why is 3d so uncommon? I don't know about the community you work in, but the REQUIREMENTS for 3-D are very severe here. This is why we have had numerous local ACM/SIGGRAPH meetings here on 3-D. The uses I've seen include: cartography (making real space coordinates and removing perpective), image processing, flight simulation [E&S CT5A and Link], Stereographics hardware (lower cost). Applications include just about everything from molecular bio to entertainment (video games). You will note the simulation has a real-time requirement (NC == not cheap). "How many jumps have you made?" "42...... 41 simulated..." The USGS does tons (read millions of $$) of 3-D making maps with all sorts of older analogue equipment. They don't have the bucks, so they use inexpensive systems like the synchronous rotating tin can. It just does not scale (cost). 3-D for most people is sort of like a picture phone (which didn't take off either). We will eventually get the stuff, but just like certain things in the world, if you have to ask the cost, you can't afford it. And remember what Steve Martin said, "Think three dimensionally." What ever song that was. 8-) Another gross generalization from --eugene miya, NASA Ames Research Center, eugene@aurora.arc.nasa.gov resident cynic at the Rock of Ages Home for Retired Hackers: "Mailers?! HA!", "If my mail does not reach you, please accept my apology." {uunet,hplabs,ncar,decwrl,allegra,tektronix}!ames!aurora!eugene "Post follow ups. Contribute to network noise."
lmeyer@well.UUCP (lhary meyer) (03/18/89)
For stereophiles on the net, Stereographics Corp. is now on board and happy to answer questions and assist in any way we can about our Stereoscopic display equipment specificly and stereo in general. Either I or Lenny Lipton, the author of "Foundations of the Stereoscopic Cinema", the only modern book on the subject, will try to answer any questions. Email me or try phone:415-459-4500 .. FAX 415-459-3020..MCI 231-9225..email lmeyer@well.uucp and path via any lll machine or !ptsfa.