Path: ...!2.eu.feeder.erje.net!3.eu.feeder.erje.net!feeder.erje.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Robert Riches Newsgroups: comp.os.linux.misc Subject: Re: GIMP 3.0.0-RC1 Date: 11 Feb 2025 05:18:56 GMT Organization: none-at-all Lines: 80 Message-ID: References: <655acbf6-05e5-69ff-8a44-9f7075aafa2e@example.net> <4d5c4b6a-b425-0700-affc-45c342ea7f5a@example.net> <9PadnaJX4N0-CDf6nZ2dnZfqn_idnZ2d@earthlink.com> Reply-To: spamtrap42@jacob21819.net X-Trace: individual.net E4htgJjlotOm3mkuqW9OKgX1EjZo/6UaC8A/5K/O2ArD97gUpN Cancel-Lock: sha1:ZBHjNeqwu/RsAoyqo7P9j1DXfaU= sha256:2X6G/LOuqYf6mr+uxP5cQKwJBnd3PlsAW8nczRpi1mU= User-Agent: slrn/1.0.3 (Linux) Bytes: 4839 On 2025-02-11, Robert Riches wrote: > On 2025-02-11, WokieSux282@ud0s4.net wrote: >> On 2/10/25 4:41 PM, D wrote: >>> >>> >>> On Mon, 10 Feb 2025, candycanearter07 wrote: >>> >>>> D wrote at 21:19 this Saturday (GMT): >>>> [snip] >>>>> My most powerful software was a multi-path checker to a storage system >>>>> that held a lot of pension money. >>>>> >>>>> It was written in bash. =D >>>>> >>>>> Ok, ok... I wrote a GUI for some kind of batch job mgmt software that >>>>> IBM >>>>> hobbled together in order to trace dependencies, that was done in >>>>> python. >>>> [snip] >>>> >>>> >>>> Did you use something like tkinter? >>>> >>> >>> Hmm, it was a long time ago, so I no longer remember. I _think_ it was >>> some kind of graph library that enabled you to generate graphics based >>> on some kind of node and vertice notation. It then generated a pdf which >>> you would zoom into, which visualized all the dependencies of all the >>> batch jobs. Sorry, that's about the best I can do. The code is long lost >>> in time, like tears in rain. >> >> "Vector" graphics ? You don't see that approach much >> any more. Was most popular when you could buy vector >> CRT displays - think 1950s/60s movies about NORAD or >> similar. They didn't have the stuff for big sharp >> bitmaps so you just had the CRT move a bright dot >> around XY coords. Kinda like working a pen potter. >> >> Vector makes no sense but with anything but CRTs >> as the dot path is made by directly driving the XY >> coils in the tube rather than any kind of 'scan' >> being involved. >> >> Hmmm ... I think there was an old 'asteroid' kind >> of arcade game that used vector. Very sharp, bright, >> quick outline drawings. > > Yes, there was an Asteroid arcade game that used vector graphics > on a CRT. It was a rather pretty picture. > > Tektronix had some fairly nice (but expensive) BASIC machines in > the late 1970s and into the earlier 1980s in the 4050 series: > > 4051 6800 and ~12" perfectly flat screen 1024x768 > > 4052 bit-slice ~20MHz, same screen as 4051 > > 4054 bit-slice ~20MHz, 19" curved screen 4Kx3K > > Everything in BASIC was 64-bit FP, for which the bit-slice CPU > had an opcode for FP add/sub/mult/div. I don't remember whether > trig functions were opcodes or done by the ROM. Oh, forgot to mention, both sizes of CRTs were _STORAGE_ tubes, almost like an electronic etch-a-sketch except that line segments of any angle were perfectly smooth--all done by analog circuitry. The CPU wrote to a few registers that fed the DACs, and the beam was moved along the specified path at a proper speed to write to write to the phosphor. To erase anything, you had to flash the screen to completely blank. Later on, they had a sort-of 2-color version of the larger CRT and a refresh graphics engine that would sweep the beam at a low enough intensity that it wouldn't transition the phosphor to stored 'on' mode. -- Robert Riches spamtrap42@jacob21819.net (Yes, that is one of my email addresses.)