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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] [-mono] [-install] [-noinstall] [-visual vis‐
       ual] [-window-id window-id] [-delay usecs]  [-duration  secs]  [-radius
       pixels] [-speed int] [-number int] [-swamp] [-bounce] [-reflect] [-vor‐
       tex] [-magnify] [-blackhole] [-slow] [-shm] [-no-shm] [-fps]

DESCRIPTION
       The distort program takes an image and lets circular zones  of  distor‐
       tion  wander  randomly  around  it, distorting what is under them.  The
       mode of distortion and the overall behaviour of the zones can be influ‐
       enced 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-demo(1) for more details.

OPTIONS
       distort accepts the following options:

       -root   Draw on the root 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  sec‐
	       onds.

       -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.	 WARN‐
	       ING: 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.

SEE ALSO
       X(1), xscreensaver(1), xscreensaver-demo(1), xscreensaver-getimage(1)

COPYRIGHT
       Copyright  ©  1998  by  Jonas Munsin and Jamie Zawinski.	 Permission to
       use, copy, modify, distribute, and sell this software and its  documen‐
       tation for any purpose is hereby granted without fee, provided that the
       above copyright notice appear in all copies and that  both  that	 copy‐
       right notice and this permission notice appear in supporting documenta‐
       tion.  No representations are made about the suitability of this	 soft‐
       ware  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		      5.07 (10-Aug-2008)		    distort(6)
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