NAME

       distort - distort the content of the screen in interesting ways

SYNOPSIS

       distort [-root] [-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-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 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.

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 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                                   5.45 (08-Dec-2020)                                    distort(6x)