Ppmpat User Manual(0) Ppmpat User Manual(0)NAMEppmpat - make a pretty PPM image
SYNOPSISppmpat {-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 ALSOpnmtile(1) , pnmquant(1) , ppmmake(1) , ppmrainbow(1) , pamgradient(1)
, ppm(1)AUTHOR
Copyright (C) 1989 by Jef Poskanzer.
netpbm documentation 24 November 2012 Ppmpat User Manual(0)
