XScreenSaver(1)                                                XScreenSaver(1)


       fluidballs - the physics of bouncing balls.


       fluidballs  [-display  host:display.screen]  [-visual visual] [-window]
       [-root] [-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

       -window Draw on a newly-created window.  This is the default.

       -root   Draw on the root 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:

       -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  sec-

               Make all balls be the same size.

               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 | -no-fps
               Whether to show a frames-per-second display at  the  bottom  of
               the screen.


       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.


       X(1), xscreensaver(1)


       Copyright © 2002 by Peter Birtles and Jamie  Zawinski.   Permission  to
       use,  copy, modify, distribute, and sell this software and its documen-
       tation for any purpose is hereby granted without fee, provided that the
       above  copyright  notice  appear in all copies and that both that copy-
       right notice and this permission notice appear in supporting documenta-
       tion.   No representations are made about the suitability of this soft-
       ware for any purpose.  It  is  provided  "as  is"  without  express  or
       implied warranty.


       Peter Birtles, Jamie Zawinski, and Steven Barker.

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