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anemotaxis(6)		      XScreenSaver manual		 anemotaxis(6)

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  (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

X Version 11		      5.12 (15-Sep-2010)		 anemotaxis(6)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ENVIRONMENT | SEE ALSO | COPYRIGHT | AUTHOR

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