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boing(6)		      XScreenSaver manual		      boing(6)

       boing - draws a bouncing	ball like the ancient Amiga demo

       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]

       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.

       boing accepts the following options:

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

       -root   Draw on the root	window.

	       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

       -delay usecs
	       The delay between frames	of the animation, in microseconds: de-
	       fault 15000.

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

	       Do shaded lighting instead of flat colors.

	       If the window is	large enough, draw horizontal lines  to	 simu-
	       late 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.

	       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

	       Look crummy.

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

       DISPLAY to get the default host and display number.

	       to get the name of a resource file that	overrides  the	global
	       resources stored	in the RESOURCE_MANAGER	property.

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

       Copyright (C) 2005 by Jamie Zawinski.  Permission to use, copy, modify,
       distribute, and sell this software and its documentation	for  any  pur-
       pose  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	repre-
       sentations are made about the suitability of this software for any pur-
       pose.  It is provided "as is" without express or	implied	warranty.

       Jamie Zawinski <>, 19-Feb-2005.

X Version 11		      5.44 (20-Mar-2020)		      boing(6)


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