XScreenSaver(1)

NAME
       puzzle - permute the screen image like a jigsaw puzzle

SYNOPSIS
       puzzle  [-display host:display.screen] [-background color]
       [-delay  usecs]  [-window]  [-root]  [-install]   [-visual
       visual]

DESCRIPTION
       The puzzle program takes an image of the screen, carves it
       up into a crossword puzzle, shuffles it, and  then  solves
       it.

OPTIONS
       puzzle accepts the following options:

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

       -root   Draw on the root window.

       -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
               How long to wait between shuffling pieces; default
               700000, or 0.7 seconds.

RESOURCES
       On  some systems (currently, only SGIs), this program can,
       instead of grabbing a desktop image, grab a frame of video
       from  an external camera and manipulate that instead.  The
       following resources control that.

       grabVideoProbability (Float)
               What portion of the time to grab video rather than
               a  screen image, between 0.0 and 1.0.  Defaults to
               0.5, or half the time.

       videoDevice (Integer)
               The number of the default video  input  device  to
               check  first.   If unspecified, the default camera
               (from videopanel(1)) will be checked first.  After
               that, all other available video input devices will
               be checked in order.
               The first one which  produces  a  non-black  image
               will be used.  If all images are black, the others
               will be re-checked a few times  before  giving  up
               and  falling  back  to  simply  grabbing a desktop
               image (but note that this takes a few seconds,  so
               if  you  don't  actually  have  any  video sources
               hooked up, you should consider turning  off  video
               grabbing  by setting grabVideoProbability to 0.0.)

       videoGain (Float)
               The amount by which to brighten the grabbed image.
               This defaults to 2.2.

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_MAN-
               AGER property.

SEE ALSO
       X(1) xscreensaver(1) 

COPYRIGHT
       Copyright  (C) 1997 by 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.

AUTHOR
       Jamie Zawinski lt;jwz@netscape.com, 25-Nov-97.