NAME

       anemotaxis - directional search on a plane.

SYNOPSIS

       anemotaxis  [-display  host:display.screen]  [-visual  visual]  [-window]  [-root] [-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.

       -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.

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