anemotaxis(6x) XScreenSaver manual anemotaxis(6x)
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 di-
rection 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 re-
leased 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.
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 pur-
pose 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 repre-
sentations are made about the suitability of this software for any pur-
pose. It is provided "as is" without express or implied warranty.
AUTHOR
Eugene Balkovsky
X Version 11 5.45 (08-Dec-2020) anemotaxis(6x)
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