NAME

       rd-bomb - reaction/diffusion textures

SYNOPSIS

       rd-bomb  [--display  host:display.screen]  [--foreground  color] [--background color] [--window] [--root]
       [--window-id number][--install] [--visual visual] [--width n] [--height n] [--reaction n] [--diffusion n]
       [--size f] [--speed f] [--delay millisecs] [--fps]

DESCRIPTION

       The rd-bomb program draws reaction/diffusion textures.

OPTIONS

       If  one  of  the  reaction,  diffusion, radius, and palette options is set to a negative value, then that
       option will be set to a random appropriate value.

       Be sure to try "-speed 1 -size 0.1 -epoch 3000".

       rd-bomb accepts the following options:

       --window
               Draw on a newly-created window.  This is the default.

       --root  Draw on the root window.

       --window-id number
               Draw on the specified window.

       --install
               Install a private colormap for the window.

       --visual visual
               Specify which visual to use.  Legal values are the name of a  visual  class,  or  the  id  number
               (decimal or hex) of a specific visual.

       --width n

       --height n
               Specify the size of the tile, in pixels.

       --reaction n

       --diffusion n
               These  are constants in the equations that effect its visual nature.  Each may be one of 0, 1, or
               2. Default is -1: these constants are chosen randomly.

       --radius n
               Size of the seed.

       --size f
               What fraction of the window is actively drawn, a floating point number between 0 (exclusive)  and
               1 (inclusive).  Default is 1.0.

       --speed f
               When  a  fraction  of  the screen is active, the active area moves at this rate (a floating point
               number).  Default is zero.  Suggested value: 1.0.

       --delay millisecs
               How many milliseconds to delay between frames; default 1, or about 1/1000th of a second.

       --fps   Display the current frame rate and CPU load.

HISTORY

       The code is derived from the 'd' mode of the "Bomb" visual musical instrument, also by Scott Draves.  The
       equations come from Xmorphia, which is based on a version of the Gray-Scott model taken from:

       John E. Pearson "Complex Patterns in a Simple System"
       Science, 261,189, 9 July 1993.

ENVIRONMENT

       DISPLAY to get the default host and display number.

       XENVIRONMENT
               to  get  the  name  of  a  resource  file  that  overrides  the  global  resources  stored in the
               RESOURCE_MANAGER property.

       XSCREENSAVER_WINDOW
               The window ID to use with --root.

SEE ALSO

       X(1), xscreensaver(1),
       https://scottdraves.com/bomb.html
       https://web.archive.org/web/19981206145216/http%3A//www.ccsf.caltech.edu/ismap/image.html

COPYRIGHT

       Copyright © 1997 by Scott Draves.

       Permission to use, copy, modify, and distribute this software and its documentation for any  purpose  and
       without  fee  is  hereby  granted, provided that the above copyright notice appear in all copies and that
       both that copyright notice and this permission notice appear in supporting documentation.

AUTHOR

       Scott Draves <spot@cs.cmu.edu>, Sep 1997