quasicrystal(6x)

quasicrystal6x

Aperiodic plane tilings.

Usage

quasicrystal [--display host:display.screen] [--visual visual] [--window] [--root] [--window-id number] [--delay number] [--speed number] [--count number] [--contrast percent] [--no-wander] [--no-spin] [--asymmetric] [--fps]

Overview

A quasicrystal is a structure that is ordered but aperiodic. Two-dimensional quasicrystals can be generated by adding a set of planes where x is the sine of y. Different complex aperiodic plane tilings are produced depending on the period, position, and rotation of the component planes, and whether the rotation of the planes is evenly distributed around the circle (the "symmetric" option, above) or random. See also the "RD-Bomb", "CWaves" and "Penrose" screen savers.

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: 30000 (0.03 seconds.).

--speed number

Animation speed. 2 for twice as fast, 0.5 for half as fast.

--contrast contrast

Contrast. Sort of. Default 30%.

--count number

How many planes to use. Default 17.

--wander | --no-wander

Whether the planes should displace horizontally and vertically.

--spin | --no-spin

Whether the planes should rotate.

--asymmetric

Allow each plane to rotate freely instead of being constrained to an even distribution around the circle.

--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

6 releases since Debian 8 (Jessie); the text changed 5 times.

  1. 8
  2. 9
  3. 10
  4. 11
  5. 12
  6. 13

--asymmetric since Debian 12 (Bookworm); --contrast since Debian 12 (Bookworm); --count since Debian 12 (Bookworm); --delay since Debian 12 (Bookworm); --fps since Debian 12 (Bookworm); --no-fps since Debian 12 (Bookworm); --no-spin since Debian 12 (Bookworm); --no-wander 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); --window since Debian 12 (Bookworm); --window-id since Debian 12 (Bookworm).

-asymmetric until Debian 11 (Bullseye); -contrast until Debian 11 (Bullseye); -count until Debian 11 (Bullseye); -delay until Debian 11 (Bullseye); -fps until Debian 11 (Bullseye); -no-fps until Debian 11 (Bullseye); -no-spin until Debian 11 (Bullseye); -no-wander 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); -window 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.