distort(6) XScreenSaver manual distort(6)

NAME

distort - distort the content of the screen in interesting ways

SYNOPSIS

distort [--root] [--window-id number][--window] [--mono] [--install]
[--noinstall] [--visual visual] [--window-id window-id] [--delay
usecs] [--duration secs] [--radius pixels] [--speed int] [--number
int] [--swamp] [--bounce] [--reflect] [--vortex] [--magnify]
[--blackhole] [--slow] [--shm] [--no-shm] [--fps]

DESCRIPTION

The distort program takes an image and lets circular zones of
distortion wander randomly around it, distorting what is under them.
The mode of distortion and the overall behaviour of the zones can be
influenced in various ways.

The image that it manipulates will be grabbed from the portion of the
screen underlying the window, or from the system's video input, or
from a random file on disk, as indicated by the grabDesktopImages,
grabVideoFrames, and chooseRandomImages options in the
~/.xscreensaver file; see xscreensaver-settings(1) for more details.

OPTIONS

distort accepts the following options:

--root Draw on the root window.

--window-id number
Draw on the specified window.

--window
Draw on a newly-created window. This is the default.

--mono If on a color display, pretend we're on a monochrome display.

--install
Install a private colormap for the window.

--noinstall
Don't install a private colormap for the window.

--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-id window-id
Specify which window id to use.

--delay usecs
Specify the delay between subsequent animation frames in
microseconds.

--duration seconds
How long to run before loading a new image. Default 120
seconds.

--radius pixels
Specify the radius of the distortion zone in pixels.

--speed int
Specify the speed at which the distortion zone moves, where 0
is slow, higher numbers are faster (10 is pretty fast.)

--number int
Specify the number of distortion zones.

--swamp Instead of letting zones wander around, let small zones pop
up like bubbles in a swamp and leave permanent distortion.
WARNING: this option uses a colossal amount of memory: keep
the --radius small when using --swamp.

--bounce
Let zones wander around and bounce off the window border.
This is the default.

--reflect
Mode of distortion that resembles reflection by a cylindrical
mirror.

--vortex
Whirlpool-shaped distortion. Way cool.

--magnify
This mode of distortion looks like a magnifying glass.

--blackhole
Suck your pixels beyond the event horizon. Favourite mode of
Dr Stephen Hawking.

--slow Make the zone wander slower.

--shm Use shared memory extension.

--no-shm
Don't use shared memory extension.

--fps Display the current frame rate and CPU load.

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), xscreensaver-settings(1),
xscreensaver-getimage(6)

COPYRIGHT

Copyright (C) 1998 by Jonas Munsin and 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.

AUTHORS

Jonas Munsin <jmunsin@iki.fi> and Jamie Zawinski <jwz@jwz.org>. This
manual page by Matthias Warkus <mawa@iname.com>, 17-Oct-1999.

X Version 11 6.09 (07-Jun-2024) distort(6)