distort



XScreenSaver(1)                                                XScreenSaver(1)




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] [-radius pixels]  [-speed
       int]  [-number  int] [-swamp] [-bounce] [-reflect] [-vortex] [-magnify]
       [-blackhole] [-slow] [-shm] [-no-shm]


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.

       -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.


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                       17-Oct-99                   XScreenSaver(1)

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