NAME

marbling - Marble-like or cloud-like patterns.

SYNOPSIS

marbling [--display host:display.screen] [--visual visual] [--window] [--root] [--window-id number] [--delay number] [--scale number] [--iterations number] [--fps]

DESCRIPTION

This generates a random field with Perlin Noise, then permutes it with Fractal Brownian Motion to create images that somewhat resemble clouds, or the striations in marble, depending on the parameters selected and the colors chosen.

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: 10000 (0.01 seconds).

--scale number

Scale. 1 - 30. Default: 10.

--iterations number

Complexity. 1 - 20. Default: 5.

--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.

SEE ALSO

X(1), xscreensaver(1)

COPYRIGHT

Copyright © 2021 by Jamie Zawinski and Dave Odell. 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 and Dave Odell.