Man page - xphoon(6)

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Package: xphoon
apt-get install xphoon

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xphoon(6)

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xphoon

Manual

xphoon

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
NOTES
SEE ALSO
AUTHORS

NAME

xphoon - displays the PHase of the mOON on the root window

SYNOPSIS

xphoon [ -b ] [ -t interval [ -i ]] [ -s ] [ -display name ]

DESCRIPTION

Xphoon sets the X root window to a picture of the moon in its current phase, including the partial lighting of the dark side by reflected earthlight.

OPTIONS

	-b		Defeats the earthlight feature, forcing the dark side to be black.
	-t		Have xphoon keep running and update the picture every interval minutes. (Normally, xphoon just sets the root picture and exits.)
	-i		Forks a background process and prints the process-id to stdout. Useful if you want to make menu commands to refresh or kill xphoon .
	-s		Rotate the whole picture 180 degrees, resulting in a moon picture as viewed fom the Southern hemisphere.
	-demo		Demonstrate xphoon by rapidly stepping through moon phases.

NOTES

The original motivation for this program was that xsetroot was too slow. Loading a full-screen bitmap took about 15 seconds. We made a trivial program that had fullmoon.bitmap compiled in, and it ran in less than a second. (And incidentally, the executable was smaller than fullmoon.xbm.) Then later we came up with the phase hacking, the earthlight, and the auto-scaling.

AUTHORS

The moon-phase computation is from "moontool.c" by John Walker.