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