anemotaxis - directional search on a plane.
anemotaxis [-display host:display.screen] [-visual visual] [-window]
[-root] [-delay number] [-distance number] [-sources number]
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 serchers who are trying to
capture the sources.
Specify which visual to use. Legal values are the name of a
visual class, or the id number (decimal or hex) of a specific
-window Draw on a newly-created window. This is the default.
-root Draw on the root window.
Per-frame delay, in microseconds. Default: 20000 (0.02 sec-
Max initial distance to the source . 10 - 250. Default: 40.
Max number of sources. Default: 25.
Max number of searchers. Default: 25.
DISPLAY 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 (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.
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