glschool man page on Ubuntu
[printable version]
glschool(6x) XScreenSaver manual glschool(6x)
NAME
glschool - a 3D schooling simulation
SYNOPSIS
glschool [-display host:display.screen] [-visual visual] [-window]
[-root] [-wireframe] [-fps] [-delay number] [-nfish number] [-maxvel
number] [-minvel number] [-acclimit number] [-avoidfact number]
[-matchfact number] [-centerfact number] [-targetfact number] [-minra‐
dius number] [-momentum number] [-distexp number] [-goalchgf number]
[-fog] [-drawgoal] [-drawbbox]
DESCRIPTION
Uses Craig Reynolds Boids algorithm to simulate a 3d school of fish.
See <http://www.red3d.com/cwr/boids> for a description of the algorithm
and the original paper. This is a lightly modified version of the
algorithm that supports goal attraction.
Many different behaviors are possible by tweaking the parameters. No
sanity checking is performed on the command line params, so if you want
to use negative accelerations or minimum velocity that is larger than
maximum velocity or that sort of thing, the simulation will try to
digest it.
It looks best with the highest number of fish that will give you an FPS
of > 25 or so.
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 (0.020 sec‐
onds.).
-wireframe | -no-wireframe
Render in wireframe instead of solid.
-fps Display the current frame rate, CPU load, and polygon count.
-fog | -no-fog
Whether to show foggy (cloudy) water.
-drawgoal | -no-drawgoal
Whether to show the school's attraction goal.
-drawbbox | -no-drawbbox
Whether to show the bounding box.
-fog | -no-fog
Whether to show foggy (cloudy) water.
-nfish number
Number of fish. Defaults to 100
-acclimit number
Acceleration limit. Defaults to 8.0
-minvel number
Minimum velocity. Defaults to 1.0
-maxvel number
Minimum velocity. Defaults to 7.0
-goalchgf number
Goal change frequency. Defaults to 50 (frames)
-avoidfact number
Avoidance acceleration factor. Defaults to 1.5
-matchfact number
Match avg velocity acceleration factor. Defaults to 0.15
-centerfact number
School centering acceleration factor. Defaults to 0.1
-targetfact number
Target attraction acceleration factor. Defaults to 80
-distexp number
Distance weighting exponent. Defaults to 2.2
-momentum number
Momentum. Defaults to 0.9
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 © 2005-2006 by David C. Lambert. 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 war‐
ranty.
AUTHOR
David C. Lambert
X Version 11 5.10 (07-Sep-2009) glschool(6x)
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