Provided by: xscreensaver-data-extra_5.08-0ubuntu3_i386 bug
 

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 ear-
        lier  (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 sec-
                onds.).
 
        -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.
        X(1), xscreensaver(1)
 

COPYRIGHT

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

AUTHOR

        Eugene Balkovsky