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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 dis-
     tortion 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,  grabVide-
     oFrames,  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 microsec-
	     onds.

     --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  mir-
	     ror.

     --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  re-
	     sources 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 copy-
     right notice appear in all copies and that both that copyright  notice  and
     this  permission notice appear in supporting documentation.  No representa-
     tions 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 man-
     ual page by Matthias Warkus <mawa@iname.com>, 17-Oct-1999.

X Version 11		       6.15 (30-Mar-2026)		      distort(6)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=distort&sektion=6&manpath=FreeBSD+Ports+15.1.quarterly>

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