DragonFly On-Line Manual Pages

boing(6)                      XScreenSaver manual                     boing(6)

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
       Consumer Electronics Show (or so the legend goes.)  The boing ball was
       briefly the official logo of Amiga Inc., until they were bought by
       Commodore 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(6), pong(6), 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                  5.34 (24-Oct-2015)                      boing(6)