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scrolling led signs

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Anything already programmed that generates computer animations
like the effects available on high-end scrolling led signs, e.g.,
   http://www.tvliquidator.com/
(scroll down a screen or so to the "Demonstration Video").
Google found
   http://wigflip.com/signbot/
but not too much else that I could get it to find.
I'd have thought this kind of thing has been done a lot,
but I couldn't get google to cough up much.

I'm working on my own version, gifscroll.cgi, as per
the banner at the top of
   http://www.forkosh.com/gifsave89.html
whereby you just put an <img> tag in your html document like
   <img src="cgi-bin/gifscroll.cgi?
     message=\HUGE \hspace{16}\fbox{\fbox{\bf{g i f s a v e 8 9}}}
     \hspace{16} & nscroll=3 & nflicker=12 & nrows=125 & ncols=500
     & njitter=6 & vjitter=.9 & fg=1 & bg2=0 & nchk=32
     & fg1=-1 & fg2=0 & opaque=2">
for that particular banner.
   It's a pretty complicated mess, but then gifscroll.cgi generates
the animation on-the-fly (and caches it so it's only generated once).
   So once you learn the syntax (or better, keep a cheatsheet in
front of you), you can easily and immediately embed these kinds of
banners in any html document. Just put the appropriate <img> tag
with some silly-looking ?querystring in the src="" attribute.

But what else already exists that does stuff along these
same lines? Thanks.
P.S. The code for gifscroll.c will become part of the gifsave89.zip
distribution, just like gifgraph.c already is (see Section 4 of
that gifsave89.html page). But that'll be a while yet, since gifscroll
is still under development, and I haven't even begun documentation.
-- 
John Forkosh  ( mailto:  j@f.com  where j=john and f=forkosh )

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scrolling led signs JohnF <john@please.see.sig.for.email.com> - 2014-03-22 15:49 +0000

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