README
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- This is the gd gif-manipulating library, version 1.2. It was
- created to allow graphs, charts and the like to be generated on the
- fly for use on the World wide Web, but is useful for any
- application in which custom .GIFs are useful. It is not a paint
- program; it is a library. If you are looking for a paint program
- for the X Window System, check out David Koblas "xpaint", available
- by anonymous FTP from ftp.netcom.com in pub/ko/koblas. (I'm just a
- fan of Dave's code.)
- NOTE TO THE IMPATIENT: the Sun 'cc' compiler shipped
- standard with SunOS 4.1.3 is NOT AN ANSI C COMPILER and
- will not compile gd. Get and use gcc if you don't
- already have it, or use Sun's own commercial-grade
- ANSI C compiler if you prefer to purchase it.
- "What's new in gd 1.2?"
- Many bug fixes, ANSI C compliance, several new fonts and more.
- "Where's the manual?"
- Load gd.html into your web browser. Print it if you like,
- but <em>every single reference to a function is a hyperlink</em>,
- so the manual is especially good when read online! Note
- that the entire manual is one document, so it should be
- reasonably pleasant to read offline when printed.
- COPYRIGHT 1994,1995 BY THE QUEST CENTER AT COLD SPRING HARBOR LABS.
- Permission granted for unlimited use, provided that
- Thomas Boutell and the Quest Center at Cold Spring Harbor Labs are given
- credit for the library in the user-visible documentation of
- your software. If you modify gd, we ask that you share the
- modifications with us so they can be added to the
- distribution. See gd.html for details.
- gd has been compiled in various forms on all major platforms.
- It is happiest on a machine with 32-bit addressing and
- a proper stack (ie, anything running Unix, VMS, Windows NT
- or any other modern operating system), but is entirely
- usable under DOS and Windows. Note, however, that the
- flood-fill routines are mildly recursive and may fail on machines
- with tiny stack areas. Also, the fonts require a significant
- amount of memory (they are optimized more for speed than
- for size), but they need not be linked by applications that
- do not use them. Otherwise the code is highly
- portable as long as you have an ANSI C compiler.
- Full documentation is provided in HTML (World Wide Web) format
- in the file gd.html (part of this distribution). You can access the
- latest version of the file at the URL "http://siva.cshl.org/gd/gd.html".
- If you are unfamiliar with the World Wide Web, consult the Frequently
- Asked Questions posting of the appropriate comp.infosystems.www.browsers
- subgroup for your operating system to obtain
- more information on where to locate a hypertext browser.
- The text-based browser "Lynx" does a particularly good job
- of navigating the manual and will run on nearly anything.
- Netscape works fine too.
- If you don't have the patience to consult the manual
- first, build and examine gddemo.c (see the Makefile)
- and run it. It will read in demoin.gif and output
- demoout.gif, which you will want to examine with your
- GIF viewer to see the results.
- Tom Boutell, boutell@boutell.com
- http://sunsite.unc.edu/boutell/index.html
- P.O. Box 20837
- Seattle, WA 98102