boing(6x)							XScreenSaver manual							 boing(6x)

NAME

       boing - draws a bouncing ball like the ancient Amiga demo

SYNOPSIS

       boing  [-display  host:display.screen]  [-window]  [-root]  [-install]  [-visual  visual] [-delay usecs] [-smooth] [-lighting] [-scanlines]
       [-speed] [-no-spin] [-angle degrees] [-size ratio] [-parallels n] [-meridians n] [-wireframe] [-fps]

DESCRIPTION

       The boing program draws a bouncing checkered ball on a grid.

       This is a clone of the first graphics demo for the Amiga 1000, which was written by Dale Luck and RJ Mical during a break at the 1984  Con-
       sumer Electronics Show (or so the legend goes.)	The boing ball was briefly the official logo of Amiga Inc., until they were bought by Com-
       modore later that year.

       With no arguments, this program looks a lot like the original Amiga demo. With "-smooth -lighting", it looks... less old.

OPTIONS

       boing 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 usecs
	       The delay between frames of the animation, in microseconds: default 15000.

       -smooth Draw a smooth sphere instead of a faceted polyhedron.

       -lighting
	       Do shaded lighting instead of flat colors.

       -scanlines
	       If the window is large enough, draw horizontal lines to simulate the scanlines on a low resolution monitor.

       -speed ratio
	       Change the animation speed; 0.5 to go half as fast, 2.0 to go twice as fast.

       -no-spin
	       Don't rotate the ball.

       -angle degrees
	       The jaunty angle at which the ball sits.  Default 15 degrees.

       -size ratio
	       How big the ball is; default 0.5 meaning about half the size of the window.

       -parallels n
	       -meridians n The pattern of rectangles on the ball.  Default 8x16.

       -wireframe
	       Look crummy.

       -fps    Display the current frame rate, CPU load, and polygon count.

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

       bsod(6x), pong(6x), xscreensaver(1), X(1)

COPYRIGHT

       Copyright (C) 2005 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 <jwz@jwz.org>, 19-Feb-2005.

X Version 11							5.15 (28-Sep-2011)							 boing(6x)