[comp.sys.atari.8bit] OMNIVIEW character set

jhs@mitre-bedford.ARPA.UUCP (04/15/87)

Dean Brunette writes:
> I guess my line should have read, "...can only display 40 columns legibly
> IN MY OPINION..."  I can't stand Omniview, and prefer the crispness of the
> Atari XEP80 (which is fantastic!) or an ST or an IBM (at even 640x200).
> Maybe it's just that I don't like my lower case N's to look like this bit
> map:
>                    N
>                  N N
>                  NNN
>                  N N
>                  N
-------
I was going to reply to this comment earlier, but David Young beat me to the
punch.  (Darn near literally, at that!)  However, he did not get specific:
The lowercase n in OMNIVIEW's character set is represented more like the n in
the following:
##############################################################################
##############################################################################
##############################################################################
#####       ############    ########  #####  #################################
#####  ######  ######  ######  #####  #####  #################################
#####  ######  ######  ######  #####  #####  #################################
#####  ######  ######  ######  #####  #####  #################################
#####  ######  ######  ######  #####  #####  #################################
#####  ######  ######  ######  #####         ################################
#####  ######  #########    ########  #####  ################################
#############################################################################
#############################################################################
#############################################################################

I have tried to make the rendition look accurately like the OMNIVIEW
rendition, and I must say the exercise has reinforced my feeling that David
Young "stole" some pixels from somewhere.  I simply COULD NOT make it look
right on a smaller scale.  Partly this is because I didn't have solid scan
lines to work with.  Anyway, the rendition looks quite accurate on my
printer, except that in this magnification, the characters look uglier and
more "quantized" than the actual OMNIVIEW font on my monitor.  Try looking at
ANY dot matrix font under a magnifying glass and you will see the same effect.
Anyway, the bottom line is, to see what it really looks like, you should stand
back from the screen or printout about as far as possible so that the # signs
blend into a continuous background and the letters blend into continuous
shapes.  If you do this, you will see that the "n" really looks like an "n",
and bears little resemblance to Mr. Brunette's rendition of it.  I can't
imagine where his version of an OMNIVIEW "n" came from, perhaps he has a
defective version of OMNIVIEW or something.  All I can say is, if your
reproduction of the above "now" looks anything like the one I printed on my
printer (using OmniCom's nifty new "Print Screen" function, by the way), then
you have a FAIRLY ACCURATE rendition of what it would look like with OMNIVIEW
on a good monochrome monitor.  Except be SURE to stand back far enough to lose
the dot matrix effect when you look at it.  And I would also say that the
image on my monitor of the actual word "now" looks a bit better than the fake
version on the printer.  Somehow the "n" has a more rounded shape at the top!
(Yes, I *KNOW* that this is IMPOSSIBLE!)

I reiterate that OMNIVIEW looks best in dark letters on light background.
It appears to me that in this mode, the eye "fools" the brain into seeing the
letters as having a rounded shape, seen in silhouette against the bright scan
lines of the raster.  The brain fills in the rounded segments with more or
less complete freedom where the dark silhoutted character passes over a dark
interval between bright scan lines.  Naturally, the brain computes some
magnificently smooth interpolating function where it is free to put the data
anywhere it likes (black character passing over black area between scan
lines).  The end result is a character set that is just plain BETTER LOOKING
than it has any right to be!!!  If you switch to light characters against a
black bacground, then the characters are dotted to begin with because of the
dark areas between raster lines, and the brain now HAS TO see just what is
there -- the dark stripes hurt rather than helping.  You will have to
see a real OMNIVIEW font on a real TV or monitor to fully appreciate the
above.

OMNIVIEW definitely is a compromise approach, as even David Young would I am
sure be the FIRST to agree that more than a 4x8 dot matrix would be far better
for creating a "pretty" font.  However, David has definitely shown, in my
opinion, that a USEABLE font can be constructed in 4x8 format.  Since OMNIVIEW
is currently available, and comes WITH A WORD PROCESSOR at $39.95 list, and it
also gives you a built-in RAMdisk handler and ends the Translator Disk Hassle,
I still stand behind my recommendation of it as a reasonable approach to
getting 80 columns on your 8-bitter.  With the trend to 16-bit machines moving
right along, $39.95 sounds to me like a lot more reasonable figure to invest
in upgrading an 8-bitter than $80 or so.

Of course if you need a printer interface more than a free 80-column word
processor, one of the other products might be a good way to go.  Especially if
you don't need it for a few (?) months and if you are especially critical of
screen fonts and if you plan to keep your 8-bitter forever and WANT to pay for
the best resolution you can (someday) get.  Ya pays yer money and ya takes yer
choice!

-John Sangster / jhs@mitre-bedford.arpa

njd@ihlpm.UUCP (04/16/87)

In article <8704150210.AA21650@mitre-bedford.ARPA>, jhs@mitre-bedford.ARPA writes:
> I reiterate that OMNIVIEW looks best in dark letters on light background.
> It appears to me that in this mode, the eye "fools" the brain into seeing the
> letters as having a rounded shape, seen in silhouette against the bright scan
> lines of the raster....
> 
> -John Sangster / jhs@mitre-bedford.arpa

Dark letters on a light background may look better to you, John, but I don't
agree that the display is ALWAYS better that way.  In fact, in my case, I
tend to go "blind" and/or get a headache when looking at an inverse video
display like that.  I have my copies of OmniTerm and OmniWriter set up to
display light characters on a dark green background (how dark depends on
the brightness setting on the monitor).  Also, OMNIVIEW from DOS or BASIC
is easier for me to read after I use the <SELECT>, <some-char> background-
color toggle to switch to light-on-dark.  

You may have something there about the brain perceiving the characters as
being more rounded than they are, even more so in the dark-on-light mode.
I just can't use the latter.

BTW, have you had any trouble changing the text color in OmniCom?  I was able
to play with the background color, but the text insists on being white (tho
last time it was light green).

Nick DiMasi  ...!ihnp4!ihlpm!njd