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piecewise - Man Page

lots of moving circles intersecting in interesting ways.


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]


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


--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.


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


Draw on the root window.

--window-id number

Draw on the specified window.

--delay number

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

--count number

Number of circles.  Default: 32.

--ncolors number

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

--colorspeed number

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

--minradius number

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

--maxradius number

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

--db | --no-db

Whether to double buffer.


Display the current frame rate and CPU load.



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.


The window ID to use with --root.

See Also

X(1), xscreensaver(1)


Geoffrey Irving.


6.09-1.fc41 (11-Jun-2024) X Version 11 XScreenSaver manual