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.TH nphoon 1 "26 August 1988" .SH NAME nphoon \- set the NeXT root window to display the PHase of the mOON .SH SYNOPSIS .in +.5i .ti -.5i nphoon \%[ -b ] \%[ -t <interval> ] \%[ -display <display> ] .in -.5i .SH DESCRIPTION .I nphoon sets the NeXT root window to display a picture of the moon in its current phase, including the partial lighting of the dark side by reflected earthlight. .LP The .I -b flag defeats the earthlight feature, forcing the dark side to be black. The .I -t flag can be used to have .I nphoon keep running and update the picture every .I <interval> minutes. (Normally, .I nphoon just sets the root picture and exits.) .SH NOTES The original motivation for this program was that xsetroot was .B 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.bitmap.) Then later we came up with the cheapmoons, the phase hacking, and finally the earthlight. .SH "SEE\ ALSO" .IR phoon(1), .IR pft(1) .SH AUTHORS Copyright (C) 1988 by Jef Poskanzer and Craig Leres. Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. This software is provided "as is" without express or implied warranty. The moon-phase computation is from "moontool.c" by John Walker.
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.