NAME

       Eruption - eruption of pieces of hot volcanic rock

SYNOPSIS

       Eruption  [--display  host:display.screen]  [--visual  visual]  [--window]  [--root] [--window-id number]
       [--ncolors number] [--nParticles number] [-Heat number]  [-Cooling  number]  [-Gravity  number]  [--delay
       number] [--cycles number] [--fps]

DESCRIPTION

       This hack creates an eruption of pieces of hot volcanic rock.

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.

       --window-id number
               Draw on the specified window.

       --ncolors number
               Number of Colors.  Default: 256.

       --particles number
               Number of Particles. Default: 300.

       --cooloff number
               Eruption Cooloff. Default: 2.

       --heat number
               Heat of Eruption. Default: 256.

       --gravity number
               Gravity. Default: 1.

       --delay number
               Per-frame delay, in microseconds.  Default: 5000 (0.01 seconds.).

       --cycles number
               Duration.  10 - 3000.  Default: 80.

       --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.

       XSCREENSAVER_WINDOW
               The window ID to use with --root.

SEE ALSO

       X(1), xscreensaver(1),
       https://demo-effects.sourceforge.net/

COPYRIGHT

       Copyright  ©  2002-2003  by W.P. van Paassen.  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

       W.P. van Paassen