NAME

       droste - screen saver.

SYNOPSIS

       droste [--display host:display.screen] [--visual visual] [--window] [--root] [--delay number] [--duration
       seconds] [--speed ratio] [--r1 ratio] [--r2 ratio] [--fps]

DESCRIPTION

       Mise en abyme: infinite spiral recursion within images.

       Works best with images that have a central circular feature.

OPTIONS

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

       --root  Draw on the root window.

       --delay number
               Per-frame delay, in microseconds.  Default: 20000 (0.02 seconds).

       --duration number
               How long until loading a new image, in seconds.  Default: 2 minutes.

       --speed number
               Speed  of  zooming into the image.  2.0 means twice as fast, 0.5 means half as fast.  Negative to
               zoom out.

       --r1 number
               Inner radius of the spiral.  Default: 0.2.

       --r2 number
               Outer radius of the spiral.  Default: 0.7.

       --fps | --no--fps
               Whether to show a frames-per-second display at the bottom of the screen.

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.

       XSCREENSAVER_WINDOW
               The window ID to use with --root.

SEE ALSO

       X(1), xscreensaver(1)

COPYRIGHT

       Copyright  © 2023 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.