splitflap man page

splitflap — a simulation of a split-flap electromechanical display.


splitflap [-display host:display.screen] [-visual visual] [-window] [-root] [-delay microseconds] [-speed float] [-width columns] [-height rows] [-mode text | clock12 | clock24] [-no-wander] [-spin axes] [-no-spin] [-front] [-no-front] [-wireframe] [-fps]


Simulates a split-flap display, an old style of electromechanical sign as seen in airports and train stations, and commonly used in alarm clocks in the 1960s and 1970s.  


-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.

-delay number

Per-frame delay, in microseconds.  Default: 20000 (0.02 seconds).

-speed number

Animation speed.  2.0 means twice as fast, 0.5 means half as fast.

-width number

Columns of the display.  Default: 22.

-height number

Rows of the display. Default: 8.

-mode clock12

Display a 12-hour clock.

-mode clock24

Display a 24-hour clock.

-front | -no-front

When spinning, never spin all the way around or upside down: always face mostly forward so that the text is easily readable. This is the default.


Allow spins to go all the way around or upside down.

-wander | -no-wander

Whether the object should wander around the screen.


Which axes around which the text should spin.  The default is "XYZ", meaning rotate it freely in space.  "-spin Z" would rotate the text in the plane of the screen while not rotating it into or out of the screen; etc.

-wireframe | -no-wireframe

Render in wireframe instead of solid.

-fps | -no-fps

Whether to show a frames-per-second display at the bottom of the screen.



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.

See Also

X(1), xscreensaver(1)


Jamie Zawinski.


5.36-4.fc26 (10-Feb-2017) X Version 11 XScreenSaver manual