HELP! * GREY=local LOCAL HTML version of Foils prepared 10 Sept 1996

Foil 21 Multiple-Block GIF Files (Animated GIFs)

From CGI Programming --ECS400 fall 96 ECS400fall96 Senior Undergraduate Course -- Fall Semester 96. by Nancy J. McCracken * See also color IMAGE
The GIF89a specification allows a GIF file to have multiple blocks of data, each with a different image. The images can be set to display one after another or as overlays that partially replace sections of the preceding image. They can be set to have time delays and also to loop.
Multiple-Block GIFs can be created by a program called Construction Set, from Alchemy Mindworks:
  • http://www.north.net/alchemy/alchemy.html

Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

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Page produced by wwwfoil on Wed Feb 19 1997