Section: XScreenSaver manual (6)
Updated: 5.40 (12-Aug-2018)
anemotaxis - directional search on a plane.
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.
- -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.
Draw on a newly-created window. This is the default.
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.
Display the current frame rate and CPU load.
to get the default host and display number.
to get the name of a resource file that overrides the global resources
stored in the RESOURCE_MANAGER property.
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.