DISPLAY
to get the default host and display number.
Aperiodic plane tilings.
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]
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.
--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.
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.
6 releases since Debian 8 (Jessie); the text changed 5 times.
--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).