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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 -argyle1 -argyle2 [-color colorlist [-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.
You could, for example, use it to create wallpaper for a computer screen.
One use of this program is as an example of the Netpbm library drawing(1) functions, which
it uses.
Some of the 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.
If you specify -color, give two colors: background and foreground, in that order.
-gingham3
A slightly more complicated gingham. Can be tiled.
If you specify -color, give three colors: background and two foregrounds, in that
order.
-madras
A madras plaid. Can be tiled.
If you specify -color, give three colors: background and two foregrounds, in that
order.
-tartan
A tartan plaid. Can be tiled.
If you specify -color, give three colors: background and two foregrounds, in that
order.
-poles Color gradients centered on randomly-placed poles.
If you specify -color, give two or more colors.
-squig Squiggley tubular pattern. Can be tiled.
If you specify -color, give three or more colors. The first is the background
color.
-camo Camouflage pattern.
If you specify -color, give three or more colors. The first is the background
color; the others are colors for the leafy foreground shapes. The foreground
shapes will probably occupy nearly the entire image, so that the background color
is barely visible.
-anticamo
Anti-camouflage pattern - like -camo, but ultra-bright colors.
If you specify -color, this is the same as -camo.
-argyle1
A diamond argyle pattern, without a cross through the diamond, with one diamond.
Can be tiled.
If you specify -color, give two colors: background and foreground, in that order.
This option was new in Netpbm 10.78 (March 2017).
-argyle2
A diamond argyle pattern, with a cross through the diamond, with one diamond. Can
be tiled.
If you specify -color, give three colors: background, foreground, and stripe, in
that order.
This option was new in Netpbm 10.78 (March 2017).
-color colorlist
This specifies the colors to appear in the pattern.
If you do not specify this option, ppmpat chooses colors at random.
Different patterns take different numbers of colors. Some can involve variable
numbers of colors. If you specify a number of colors incompatible with the pattern
you specify, ppmpat fails, telling you how many colors to specify.
colorlist is a comma-separated list of colors.
Specify each color as described for the argument of the ppm_parsecolor() library
routine <libppm.html#colorname> .
Example: -color red, green, rgbi:1.0/0.5/.25 .
This option was new in Netpbm 10.78 (March 2017).
-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(1)
AUTHOR
Copyright (C) 1989 by Jef Poskanzer.
DOCUMENT SOURCE
This manual page was generated by the Netpbm tool 'makeman' from HTML source. The master
documentation is at
http://netpbm.sourceforge.net/doc/ppmpat.html
netpbm documentation 2 March 2016 Ppmpat User Manual(0)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
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