piecewise - lots of moving circles intersecting in interesting ways.

       Geoffrey Irving.

X Version 11                                   6.08 (10-Oct-2023)                                  piecewise(6x)

       Copyright © 2003 by Geoffrey Irving.  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.

       This draws a bunch of moving circles which switch from visibility to invisibility when they intersect.

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.

       piecewise - lots of moving circles intersecting in interesting ways.

--visualvisual
               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-idnumber
               Draw on the specified window.

       --delaynumber
               Per-frame delay, in microseconds.  Default: 5000 (0.01 seconds.).

       --countnumber
               Number of circles.  Default: 32.

       --ncolorsnumber
               Number of colors, only one of which is used at a time.  Default: 256.

       --colorspeednumber
               How fast the color changes (0 - 100).  Default: 10.

       --minradiusnumber
               Minimum circle radius (as a proportion of screen height). Default: 0.05.

       --maxradiusnumber
               Maximum circle radius (as a proportion of screen height). Default: 0.2.

       --db|--no-db
               Whether to double buffer.

       --fps   Display the current frame rate and CPU load.

X(1), xscreensaver(1)

piecewise  [--display  host:display.screen]  [--visual  visual]  [--window] [--root] [--window-id number]
       [--delay  number]  [--count  number]  [--ncolors  number]  [--colorspeed  number]  [--minradius   number]
       [--maxradius number] [--no-db] [--fps]