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Animated GIF Object... HIGHLY BETA [message #16932] Sun, 29 August 1999 00:00 Go to next message
Matthew J. Sheats is currently offline  Matthew J. Sheats
Messages: 19
Registered: September 1997
Junior Member
Howdy Folks,

Last week there was a short lived discussion about the lack of an
animated gif reader/writer for IDL. Welp, far be it from me to let a
problem like that stand unchallenged. So I began working on one.

After about 10 hours of work, I have a GIF89A Reader working. It's IDL
Object Oriented. You instantiate the object, tell it what file you want
it to load, and it loads all frames into a linked list. (So in memory).

From there you can (at this point) display the gif.. and that's about
it for right now. (Mainly because it's 4 pm on a Sunday, and I want to
go home).

Right now it supports:

* Full Gif 89a support (as far as I can tell)
* Global Color Map
* Local Color Maps
* Comment Display (The Gif Workshop from Mindspring loves those...)
* Looping (But won't loop infinitely..)
* Loop Delays
* Application Data BLocks
* Assorted other goofiness I can't think of.

So, if anyone wants to try it out.. I'd like a few people to run it
over there favorite gifs and see what happens. Just drop me an e-mail
and I'll send it over. At the moment, it requires my own linked list
class as well...

In the next week I plan to add editing/writing capabilities, and better
data access capabilities to it.

Thanks,

Matthew Sheats
Los Alamos National Laboratory
sheats@lanl.gov
Re: Animated GIF Object... HIGHLY BETA [message #17027 is a reply to message #16932] Mon, 30 August 1999 00:00 Go to previous message
mallors is currently offline  mallors
Messages: 76
Registered: November 1997
Member
In article <37C9AD2B.E1A5363D@lanl.gov>,
"Matthew J. Sheats" <sheats@lanl.gov> writes:
>
> Howdy Folks,
>
> Last week there was a short lived discussion about the lack of an
> animated gif reader/writer for IDL. Welp, far be it from me to let a
> problem like that stand unchallenged. So I began working on one.
> [cut]


Sounds like a nice tool, but maybe it's time to start
moving away from the gif format?

http://www.slashdot.org/articles/99/08/29/0722236.shtml
http://corp2.unisys.com/LeadStory/lzw-license.html


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