Provided by: xscreensaver-gl-extra_5.08-0ubuntu3_i386 bug
 

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  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.
 
        -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.
        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  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.
 

AUTHOR

        Jamie Zawinski <jwz@jwz.org>, 19-Feb-2005.