NAME

       decayscreen - make a screen meltdown.

SYNOPSIS

       decayscreen  [-display  host:display.screen] [-window] [-root] [-mono] [-install] [-visual
       visual] [-delay usecs] [-duration secs] [-mode mode] [-fps]

DESCRIPTION

       The decayscreen program creates a melting effect by randomly  shifting  rectangles  around
       the screen.

       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

       decayscreen accepts the following options:

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

       -root   Draw on the root window.

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

       -install
               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.

       -delay microseconds
               Slow it down.

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

       -mode mode
               The  direction  in  which the image should tend to slide.  Legal values are random
               (meaning pick one), up, left, right, down, upleft, downleft,  upright,  downright,
               shuffle  (meaning  prefer no particular direction), in (meaning move things toward
               the center), out (meaning move things away from the center),  melt  (meaning  melt
               straight  downward),   stretch  (meaning  stretch  the  screen downward), and fuzz
               (meaning go blurry instead of melty).

       -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 1992 by Vivek Khera.  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.

AUTHOR

       Vivek Khera <khera@cs.duke.edu>, 05-Aug-93; based on code by David Wald,  1988.   Modified
       by  jwz,  28-Nov-1997.  Modified by Rick Schultz <rick@skapunx.net> 05-Apr-1999.  Modified
       by Vince Levey <vincel@vincel.org> 25-Oct-2001.