boing - draws a bouncing ball like the ancient Amiga demo

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

X Version 11                                   6.08 (10-Oct-2023)                                      boing(6x)

       Copyright  © 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.

       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.

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.

       XSCREENSAVER_WINDOW
               The window ID to use with --root.

       boing - draws a bouncing ball like the ancient Amiga demo

boing accepts the following options:

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

       --root  Draw on the root window.

       --window-idnumber
               Draw on the specified window.

       --install
               Install a private colormap for the window.

       --visualvisual
               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.

       --delayusecs
               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.

       --speedratio
               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.

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

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

       --parallelsn--meridiansn The pattern of rectangles on the ball.  Default 8x16.

       --wireframe
               Look crummy.

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

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

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