1boing(6x)                     XScreenSaver manual                    boing(6x)
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NAME

6       boing - draws a bouncing ball like the ancient Amiga demo
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SYNOPSIS

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

15       The boing program draws a bouncing checkered ball on a grid.
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17       This is a clone of the first graphics demo for the  Amiga  1000,  which
18       was  written  by Dale Luck and RJ Mical during a break at the 1984 Con‐
19       sumer Electronics Show (or so the legend goes.)   The  boing  ball  was
20       briefly the official logo of Amiga Inc., until they were bought by Com‐
21       modore later that year.
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23       With no arguments, this program looks a lot  like  the  original  Amiga
24       demo. With "-smooth -lighting", it looks... less old.
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OPTIONS

27       boing accepts the following options:
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29       --window
30               Draw on a newly-created window.  This is the default.
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32       --root  Draw on the root window.
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34       --window-id number
35               Draw on the specified window.
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37       --install
38               Install a private colormap for the window.
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40       --visual visual
41               Specify  which  visual  to use.  Legal values are the name of a
42               visual class, or the id number (decimal or hex) of  a  specific
43               visual.
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45       --delay usecs
46               The delay between frames of the animation, in microseconds: de‐
47               fault 15000.
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49       --smooth
50               Draw a smooth sphere instead of a faceted polyhedron.
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52       --lighting
53               Do shaded lighting instead of flat colors.
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55       --scanlines
56               If the window is large enough, draw horizontal lines  to  simu‐
57               late the scanlines on a low resolution monitor.
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59       --speed ratio
60               Change  the  animation speed; 0.5 to go half as fast, 2.0 to go
61               twice as fast.
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63       --no-spin
64               Don't rotate the ball.
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66       --angle degrees
67               The jaunty angle at which the ball sits.  Default 15 degrees.
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69       --size ratio
70               How big the ball is; default 0.5 meaning about half the size of
71               the window.
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73       --parallels n
74               --meridians  n  The pattern of rectangles on the ball.  Default
75               8x16.
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77       --wireframe
78               Look crummy.
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80       --fps   Display the current frame rate, CPU load, and polygon count.
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ENVIRONMENT

83       DISPLAY to get the default host and display number.
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85       XENVIRONMENT
86               to get the name of a resource file that  overrides  the  global
87               resources stored in the RESOURCE_MANAGER property.
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89       XSCREENSAVER_WINDOW
90               The window ID to use with --root.
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SEE ALSO

93       bsod(6x), pong(6x), xscreensaver(1), X(1)
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96       Copyright  ©  2005 by Jamie Zawinski.  Permission to use, copy, modify,
97       distribute, and sell this software and its documentation for  any  pur‐
98       pose  is  hereby granted without fee, provided that the above copyright
99       notice appear in all copies and that both  that  copyright  notice  and
100       this  permission  notice appear in supporting documentation.  No repre‐
101       sentations are made about the suitability of this software for any pur‐
102       pose.  It is provided "as is" without express or implied warranty.
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AUTHOR

105       Jamie Zawinski <jwz@jwz.org>, 19-Feb-2005.
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109X Version 11               6.08-1.fc38 (17-Oct-2023)                 boing(6x)
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