splitflap(6x)

splitflap6x

A simulation of a split-flap electromechanical display.

Usage

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

Overview

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.

Options

--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.

--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.

--no-front

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

--wander | --no-wander

Whether the object should wander around the screen.

--spin

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.

Environment

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.

Releases

5 releases since Debian 9 (Stretch); the text changed 4 times.

  1. 9
  2. 10
  3. 11
  4. 12
  5. 13

--delay since Debian 12 (Bookworm); --fps since Debian 12 (Bookworm); --front since Debian 12 (Bookworm); --height since Debian 12 (Bookworm); --mode since Debian 12 (Bookworm); --no-fps since Debian 12 (Bookworm); --no-front since Debian 12 (Bookworm); --no-wander since Debian 12 (Bookworm); --no-wireframe since Debian 12 (Bookworm); --root since Debian 12 (Bookworm); --speed since Debian 12 (Bookworm); --spin since Debian 12 (Bookworm); --visual since Debian 12 (Bookworm); --wander since Debian 12 (Bookworm); --width since Debian 12 (Bookworm); --window since Debian 12 (Bookworm); --window-id since Debian 12 (Bookworm); --wireframe since Debian 12 (Bookworm).

-delay until Debian 11 (Bullseye); -fps until Debian 11 (Bullseye); -front until Debian 11 (Bullseye); -height until Debian 11 (Bullseye); -mode until Debian 11 (Bullseye); -no-fps until Debian 11 (Bullseye); -no-front until Debian 11 (Bullseye); -no-wander until Debian 11 (Bullseye); -no-wireframe until Debian 11 (Bullseye); -root until Debian 11 (Bullseye); -speed until Debian 11 (Bullseye); -spin until Debian 11 (Bullseye); -visual until Debian 11 (Bullseye); -wander until Debian 11 (Bullseye); -width until Debian 11 (Bullseye); -window until Debian 11 (Bullseye); -wireframe until Debian 11 (Bullseye).

Author

Jamie Zawinski.

From xscreensaver-gl 6.09+dfsg1-1 in Debian 13 (Trixie). Parsed by carta from the page's man source.