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.TH XScreenSaver 1 "30-Oct-99" "X Version 11"
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boing - draws a bouncing ball like the ancient Amiga demo
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[\-display \fIhost:display.screen\fP] [\-window] [\-root] [\-install]
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[\-visual \fIvisual\fP]
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[\-angle \fIdegrees\fP]
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The \fIboing\fP program draws a bouncing checkered ball on a grid.
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This is a clone of the first graphics demo for the Amiga 1000, which
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was written by Dale Luck and RJ Mical during a break at the 1984
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Consumer Electronics Show (or so the legend goes.) The boing ball was
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briefly the official logo of Amiga Inc., until they were bought by
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Commodore later that year.
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With no arguments, this program looks a lot like the original Amiga
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demo. With "-smooth -lighting", it looks... less old.
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accepts the following options:
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Draw on a newly-created window. This is the default.
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Draw on the root window.
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Install a private colormap for the window.
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.B \-visual \fIvisual\fP\fP
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Specify which visual to use. Legal values are the name of a visual class,
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or the id number (decimal or hex) of a specific visual.
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.B \-delay \fIusecs\fP
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The delay between frames of the animation, in microseconds: default 15000.
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Draw a smooth sphere instead of a faceted polyhedron.
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Do shaded lighting instead of flat colors.
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If the window is large enough, draw horizontal lines to simulate the
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scanlines on a low resolution monitor.
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.B \-speed \fIratio\fP
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Change the animation speed; 0.5 to go half as fast, 2.0 to go twice as fast.
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Don't rotate the ball.
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.B \-angle \fIdegrees\fP
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The jaunty angle at which the ball sits. Default 15 degrees.
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How big the ball is; default 0.5 meaning about half the size of the window.
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.B \-parallels \fIn\fP
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.B \-meridians \fIn\fP
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The pattern of rectangles on the ball. Default 8x16.
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Display a running tally of how many frames per second are being rendered.
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In conjunction with \fB\-delay 0\fP, this can be a useful benchmark of
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to get the default host and display number.
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to get the name of a resource file that overrides the global resources
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stored in the RESOURCE_MANAGER property.
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Copyright \(co 2005 by Jamie Zawinski. Permission to use, copy, modify,
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distribute, and sell this software and its documentation for any purpose is
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hereby granted without fee, provided that the above copyright notice appear
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in all copies and that both that copyright notice and this permission notice
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appear in supporting documentation. No representations are made about the
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suitability of this software for any purpose. It is provided "as is" without
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express or implied warranty.
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Jamie Zawinski <jwz@jwz.org>, 19-Feb-2005.
added
removed
hacks/glx/boing.man
