fluidballs(6) XScreenSaver manual fluidballs(6)

NAME

fluidballs - the physics of bouncing balls.

SYNOPSIS

fluidballs [--display host:display.screen] [--visual visual]
[--window] [--root] [--window-id number] [--count number] [--size
number] [--gravity number] [--wind number] [--elasticity number]
[--delay number] [--nonrandom] [--no-shake] [--fps]

DESCRIPTION

Models the physics of bouncing balls, or of particles in a gas or
fluid, depending on the settings. If "Shake Box" is selected, then
every now and then, the box will be rotated, changing which direction
is down (in order to keep the settled balls in motion.)

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.

--window-id number
Draw on the specified window.

--count number
How many balls to display. Default: 300.

--size number
Maximum size of each ball. Default: 25.

--gravity number
Coefficient of gravity. Useful values are < 0.1. Default:
0.01.

--wind number
Wind. Useful values are < 0.1. Default: 0.00.

--elasticity number
Coefficient of elasticity. Useful values are 0.2 to 1.0.
Default: 0.97. Lower numbers make less bouncy balls.

--delay number
Per-frame delay, in microseconds. Default: 10000 (0.01
seconds.).

--nonrandom
Make all balls be the same size.

--no-nonrandom
Make the balls be random sizes. Default.

--shake | --no-shake
Whether to shake the box if the system seems to have settled
down. "Shake" means "change the direction of Down."

--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.

XSCREENSAVER_WINDOW
The window ID to use with --root.

SEE ALSO

X(1), xscreensaver(1)

COPYRIGHT

Copyright (C) 2002 by Peter Birtles and Jamie Zawinski. 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.

AUTHOR

Peter Birtles, Jamie Zawinski, and Steven Barker.


X Version 11 6.09 (07-Jun-2024) fluidballs(6)