fluidballs - the physics of bouncing balls.
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]
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.)
- --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.
- 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.
Copyright © 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.
Peter Birtles, Jamie Zawinski, and Steven Barker.