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.TH XScreenSaver 1 "07-Feb-2002" "X Version 11"
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twang - pluck pieces of the screen
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[\-display \fIhost:display.screen\fP] [\-foreground \fIcolor\fP] [\-background \fIcolor\fP] [\-window] [\-root] [\-mono] [\-install] [\-visual \fIvisual\fP] [\-shm] [\-no-shm] [\-delay \fImicroseconds\fP] [\-border-color \fIcolor\fP] [\-border-width \fIinteger\fP] [\-event-chance \fIfraction\fP] [\-friction \fIfraction\fP] [\-springiness \fIfraction\fP] [\-tile-size \fIinteger\fP] [\-transference \fIfraction\fP]
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\fITwang\fP divides the screen into equal-sized tiles, and then plucks
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them in various ways. Tiles are affected by their neighbors, so waves
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of motion flow through the grid. This manpage
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describes v1.3 of the program.
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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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If on a color display, pretend we're on a monochrome display.
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Install a private colormap for the window.
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.B \-visual \fIvisual\fP
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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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Use the shared memory extension (or not, respectively), if available.
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up a bit, but probably won't make that much difference. If available,
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defaults to true, resource \fIuseSHM\fP.
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.B \-delay \fImicroseconds\fP
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The interframe delay, in microseconds. Defaults to 10000, resource
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.B \-border-color \fIcolor\fP
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Color of the border surrounding each tile. Defaults to blue, resource
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.B \-border-width \fIinteger\fP
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Width of the border surrounding each tile. Defaults to 3, resource
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.B \-event-chance \fIfraction\fP
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The chance, per iteration, for an event to occur (such as tweaking
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the orientation of a tile), in the range 0..1. Defaults to 0.01,
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resource \fIeventChance\fP.
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.B \-friction \fIfraction\fP
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How much friction there is in the system, in the range 0..1.
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This is the amount by which velocities are damped per iteration.
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Defaults to 0.05, resource \fIfriction\fP.
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.B \-springiness \fIfraction\fP
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How springy the tiles are, in the range 0..1.
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This is the fraction of an orientation that gets turned into a velocity
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towards the center (resting point). Defaults to 0.1, resource
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.B \-tile-size \fIinteger\fP
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Size (width and height) of each tile, not including the outer edge
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of the border. Defaults to 120, resource \fItileSize\fP.
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.B \-transference \fIfraction\fP
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How much a tile's neighbors affect it, in the range 0..1.
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This is the fraction of an orientation of a neighbor that gets turned
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into a velocity in the same direction Defaults to 0.025, resource
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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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There are resource equivalents for each option, noted above.
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should have more interesting events.
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Ways of speeding it up need to be investigated. It's kinda sluggish,
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especially on hugeass displays.
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Copyright \(co 2002 by Dan Bornstein. All rights reserved.
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation. No representations are made about the suitability of this
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software for any purpose. It is provided "as is" without express or
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Dan Bornstein <danfuzz@milk.com>.
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hacks/twang.man
