NAME

       anemotaxis - directional search on a plane.

SYNOPSIS

       anemotaxis   [--display   host:display.screen]   [--visual   visual]  [--window]  [--root]
       [--window-id number] [--delay number] [--distance number] [--sources number]  [--searchers
       number] [--fps]

DESCRIPTION

       The  program  demonstrates  a  search  algorithm designed for locating a source of odor in
       turbulent atmosphere. The odor is convected by wind which has a  constant  mean  direction
       and  fluctuations  around  it.  The searcher is able to sense the odor and determine local
       instantaneous wind direction. The goal is to find the source in the  shortest  mean  time.
       Some  animals  face this task to find mates, food, home etc. They exhibit very particular,
       zigzagging search trajectories.

       This is modeled as a search on a discrete two-dimensional  lattice.  The  source  releases
       particles  that  drift  with  constant  velocity in one direction and walk randomly in the
       other direction. The searcher knows if it hit a particle, and if so,  particle's  position
       one  time  step  earlier  (local wind direction). The program paints sources and particles
       released by them as well as trajectories of  searchers  who  are  trying  to  capture  the
       sources.

OPTIONS

       --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.

       --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.

       --delay number
               Per-frame delay, in microseconds.  Default: 20000 (0.02 seconds.).

       --distance number
               Max initial distance to the source .  10 - 250.  Default: 40.

       --sources number
               Max number of sources.  Default: 25.

       --searchers number
               Max number of searchers. Default: 25.

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

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)

COPYRIGHT

       Copyright  ©  2004  by Eugene Balkovsky.  Permission to use, copy, modify, distribute, and
       sell this software and its documentation for any purpose is hereby  granted  without  fee,
       provided that the above copyright notice appear in all copies and that both that copyright
       notice and this permission notice appear in supporting documentation.  No  representations
       are  made  about the suitability of this software for any purpose.  It is provided "as is"
       without express or implied warranty.

AUTHOR

       Eugene Balkovsky