quasicrystal (6)

NAME

quasicrystal - aperiodic plane tilings.

SYNOPSIS

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

DESCRIPTION

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. en.wikipedia.org/wiki/Quasicrystal

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.

-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.

SEE ALSO

X(1), xscreensaver(1)

COPYRIGHT

Copyright © 2013 by Jamie Zawinski. Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. No representations are made about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty.

AUTHOR

Jamie Zawinski.