Provided by: xscreensaver-data-extra_5.36-1ubuntu1_amd64 
NAME
Eruption - eruption of pieces of hot volcanic rock
SYNOPSIS
Eruption [-display host:display.screen] [-visual visual] [-window] [-root] [-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. Ported from the demo effects collection
(http://demo-effects.sourceforge.net)
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.
-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.
SEE ALSO
X(1), xscreensaver(1)
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