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
       ppmpat -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
              invocations.

              By default, ppmpat uses a seed derived from the time of day and
              process ID, which gives you fairly uncorrelated results in
              multiple 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)