Path: utzoo!attcan!uunet!ogicse!ucsd!sdcc6!amos!jonah From: jonah@amos.ucsd.edu (Jonah Stich) Newsgroups: comp.sys.apple2 Subject: Re: 3200 pics Message-ID: <12132@sdcc6.ucsd.edu> Date: 2 Aug 90 13:51:48 GMT References: <9008020029.AA01917@apple.com> Sender: news@sdcc6.ucsd.edu Organization: University of California, San Diego Lines: 32 Nntp-Posting-Host: amos.ucsd.edu In article <9008020029.AA01917@apple.com> MQUINN%UTCVM@PUCC.PRINCETON.EDU writes: >Actually, it's as glamourus as it sounds, nor as easy or useful. To display >a 3200 color pic. Your CPU has to spend ALL of it's time switching the color >pallete3200 colors (and see it at the same time), that would be impossible (unl >ss you >have a TWGS (I -think- that would make it possible). because any code that >would read the mouse or call a toolbox routine, would throw off the timing >of switching the colors. The way they 3200 color deal works is, while the >electron beam in the monitor is scanning it's way accross and down the screen, >the computer is changing the color pallettes and timing is CRUCIAL in doing thi >s, that's why having the program do anything besides displaying the picture wou >ld be extremely difficult, if not impossible. Well, you're almost right. The IIgs is capable of doing a lot more than most people give it credit for, and easily displaying 3200 color pictures is one of those things. For instance, 3200 color animation is entirely possible, I've even seen it with my own four eyes! :) You are, right, though, that toolbox calls are pretty much out. :( >Also, the computer is limited in the way the 3200 colors are displayed. You >cannot have any pixel on the screen set to any one of the 3200 colors you want. >It's similar to the way a 256 color picture is displayed. With aEach horizonta >l line has it's own set of 16 colors and ONLY that set of 16 colors may be disp >layed on that line. (16 colors per line times 200 lines = 3200colors). True, but with good dithering and some careful color palette coices, the pictures that can be created are truly quite amazing. I think the important thing here is not to focus on the limitations, but instead to think of the POSSIBILITIES! 3200 color graphics are really taking off! Jonah Stich