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Unix System Administration Handbook 1997 October
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INDEX ENTRY FOR GD:
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Name: gd - Library for creating GIF files
Version: 1.2
Author(s): Thomas Boutell <boutell@boutell.com> (current maintainer)
Quest Protein Database Center, Cold Spring Harbor Labs
based on code by David Rowley, Marcel Wijkstra, Jef Poskanzer,
David Koblas, and others
On the CD-ROM in: goodies/gd.tar
Ftp source: cantine.wu-wien.ac.at:/pub/src/Graphics
Web page: http://www.boutell.com/gd/
Size on the CD: 328 KB (uncompressed)
Description:
gd is a graphics library. It allows your code to quickly draw
images complete with lines, arcs, text, multiple colors, cut and
paste from other images, and flood fills, and write out the
result as a .GIF file. This is particularly useful in World Wide
Web applications, where .GIF is the format used for inline images.
gd is not a paint program. If you are looking for a paint
program, try xpaint by David Koblas, available by anonymous FTP
from ftp.netcom.com in pub/ko/koblas. (That package is for the X
Window System; for the Mac and the PC, paint programs are
considerably easier to find.)
gd does not provide for every possible desirable graphics
operation. It is not necessary or desirable for gd to become a
kitchen-sink graphics package, but version 1.2 incorporates most
of the commonly requested features for a 2D package. Font support
does need improvement, and support for the PNG graphics format
will arrive in a forthcoming release.
-- Adapted from the 1.2 index.html file
Advertised architectures:
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 apps
that do not use them. Otherwise the code is highly portable.
-- Adapted from the 1.2 README file
Prerequisites:
To use gd, you will need an ANSI C compiler. Any full ANSI
standard C compiler should be adequate, although those with PCs
will need to replace the Makefile with one of their own. The cc
compiler released with SunOS 4.1.3 is not an ANSI C compiler. Get
gcc, which is freely available. See the Sun-related newsgroups
for more information.
You will also want a GIF viewer, if you do not already have one
for your system, since you will need a good way to check the
results of your work. lview is a good package for Windows PCs; xv
is a good package for X11. There are GIF viewers available for
every graphics-capable computer out there, so consult newsgroups
relevant to your particular system.
-- Adapted from the 1.2 index.html file