anemotaxis(6) XScreenSaver manual anemotaxis(6)

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 (C) 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

X Version 11 6.09 (07-Jun-2024) anemotaxis(6)