Re: GIMP 3.0.0-RC1

On 2025-02-11, Robert Riches <spamtrap42@jacob21819.net> wrote:

On 2025-02-11, WokieSux282@ud0s4.net <WokieSux283@ud0s4.net> wrote:

On 2/10/25 4:41 PM, D wrote:

 
 
On Mon, 10 Feb 2025, candycanearter07 wrote:
 

D <nospam@example.net> 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.)