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Ppmpat User Manual(0) Ppmpat User Manual(0)
NAME
ppmpat - make a pretty PPM image
SYNOPSIS
ppmpat {-gingham2|-g2} | {-gingham3|-g3} | -madras | -tartan | -poles |
-squig | -camo | -anticamo [-randomseed=integer]
width height
You can abbreviate any option to its shortest unique prefix.
DESCRIPTION
This program is part of Netpbm(1)
ppmpat produces a PPM of the specified width and height, with a pattern
in it.
This program is mainly to demonstrate use of the ppmdraw routines, a
simple but powerful drawing library. See the ppmdraw.h include file
for more info on using these routines. Still, some of the patterns can
be rather pretty. If you have a color workstation, something like ppm-
pat -squig 300 300 | pnmquant 128 should generate a nice background.
Some of these patterns have large numbers of colors, so if you want a
simpler pattern, use pnmquant on the output.
OPTIONS
The options specify various pattern types:
-gingham2
A gingham check pattern. Can be tiled.
-gingham3
A slightly more complicated gingham. Can be tiled.
-madras
A madras plaid. Can be tiled.
-tartan
A tartan plaid. Can be tiled.
-poles Color gradients centered on randomly-placed poles.
-squig Squiggley tubular pattern. Can be tiled.
-camo Camouflage pattern.
-anticamo
Anti-camouflage pattern - like -camo, but ultra-bright colors.
-randomseed=integer
This is the seed for the random number generator that generates
the pixels.
Use this to ensure you get the same image on separate invoca-
tions.
By default, ppmpat uses a seed derived from the time of day and
process ID, which gives you fairly uncorrelated results in mul-
tiple invocations.
This option was new in Netpbm 10.61 (December 2012).
REFERENCES
Some of the patterns are from 'Designer's Guide to Color 3' by Jeanne
Allen.
SEE ALSO
pnmtile(1) , pnmquant(1) , ppmmake(1) , ppmrainbow(1) , pamgradient(1)
, ppm(5)
AUTHOR
Copyright (C) 1989 by Jef Poskanzer.
netpbm documentation 24 November 2012 Ppmpat User Manual(0)
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