WMGlobe(1.3) WMGlobe(1.3)
NAME
WMGlobe - The Whole Earth spinning on you desktop... as a dockable app
for WindowMaker
SYNOPSISwmglobe [-options]
DESCRIPTION
WMGlobe is a WindowMaker dock.app that displays the earth on an icon.
It's an adaptation of XGlobe to WMaker environnement. WMGlobe uses a
map which is rendered on a sphere by raytracing. Yes, for a 64x64 pixel
result:-)
OPTIONS-v version. Currently, this should display :
WMGlobe v.1.3 12 aug 2001 <jerome.dumonteil@linuxfr.org>
-h short help
-zoom zoom_value
Value > 1 to magnify the view, value < 1 to lower. Default: 1.0
-pos latitude longitude
Initial viewing fixed at this position, don't follow the sun
rotation. Accepted values in the form 45°12'36 or 45.21 or
45:12:36 . Default: the initial position is "under" the sun,
and the point of view follows the sun.
-sun The point of view follows the Sun (default).
-moon The point of view follows the Moon (i.e. you see the Earth as
you were on the Moon).
-rand New random position at every refresh of screen.
-map map_file
Map used for the rendering. Can be JPEG, GIF, XPM PNM, TIFF but
none BMP. Default: use internal map of earth.
-nimap night_file
Map used for the dark side of the earth. Must be of the same
width x height as the day side map. Default: if the default
internal day map is used, use a default internal night file (see
-nonimap option).
-defnimap
Use the default night map (with a custom map).
-nonimap
Don't use the default night map.
-delay seconds
Time in seconds between each calculation of a new position. Lim‐
ited to 0.04 at compile time (25 frames per second should be
enough). The sun position move only once per minute, so if you
use wmglobe without -dlong or -accel option, the CPU cost of
WMGlobe is *very* low. The use of very low value for -delay plus
-dlong and -accel can be CPU costly (but very nice...).
Default: 1.0 sec.
-dlat delta_latitude
Move the point of view by delta_lat degrees per second, with a
value of 6 the earth make a full rotation in one minute. The
value can be formated as -pos option. Default: 0°0'0
-dlong delta_long
Move the point of view by delta_long degrees per second. With a
value of -0°0'15" the earth make a full rotation in 24 hours
toward the west. By default, -dlong and -dlat are null. If they
are used, the view follow their values. Going back to "follow
sun" mode in parameters screen put -dlat and -dlong to zero.
-light light_value
Level of light of the dark side when there is no night map, from
0 to 1. Default: 0.25
-dawn dawn_value
Level of continuity for dawn limit, from 0 to 1. With a value of
1, the border line between night and day is at maximum contrast.
Default: 0.2
-bord border_num
0 1 or 2. There are 3 different borders for the icon. Default:
2
-accel time_multi
Time warp factor. With -accel 24, the sun make a full rotation
in one hour (or the earth, I'm not sure). Default: 1.0
-time seconds
Time to display in seconds since 01-01-1970 (see the date com‐
mand). Necessary if you need to be sure that WMGlobe is Y2K com‐
pliant without changing system time. Negative values for dates
before 1970 accepted. Default: not set, use current time.
-mk latitude longitude
Put a fixed marker at latitude/longitude. -mk sun : put a
marker under the Sun position. -mk moon : put a marker under
the Moon. 5 markers can be defined simultaneously, so you can
use wmglobe to predict when Moon will meet the Sun :-)
-fun dx dy
Move the earth image by dx dy pixels in the icon. See puzzle.sh
to understand why.
-oz Start in "austral" mode (for "down under" people)
-stable
Keep the globe from going over the poles.
-d display
Select another display
-w -shape
Useless, since it is set by default (WMaker dockable applica‐
tion)
MOUSE OPTIONS
left button
Change longitude while pressed, change longitude & latitude if
shift+left button.
middle button
Zoom in, shift + middle button: zoom out
right button
Displays 7 screens of parameters. On every screen, just clic
with left or right button on the figures to change their value.
The TIME screen shows an approximation of date and time of the
earth zone currently displayed, using GMT time + longitude off‐
set, it's close to the real local time by one or two hours. Oth‐
ers options don't need more help. Intuitive they said...
FILES
MAPS Like XGlobe, WMGlobe needs a longitude/latitude map to work. By
default, it uses a low quality built-in map of earth. But you
will probably want to use better ones. You can get maps usable
with WMGlobe on the net. See the links below.
using custom maps:
For the image to be mapped correctly, position 0°North 0°West
must be in the center of the image and the latitude must be lin‐
ear from 90°N to 90°S. When using a night map, make sure that
day and night map have the same dimensions.
Links: Where to find maps and similar softs
where to find the sources of wmglobe: the web page of WMGlobe
(made by Sylvestre Taburet):
<http://perso.linuxfr.org/jdumont/wmg/>
where to find maps and similar softs:
Earth image by a cgi:
<http://www.fourmilab.ch/cgi-bin/uncgi/Earth>
two softs running under X:
XGlobe Homepage: (many links to map of earth)
<http://www.uni-karlsruhe.de/~uddn/xglobe>
Xearth Homepage:
<http://www.cs.colorado.edu/~tuna/xearth/>
By the way, you can use maps of Mars, Luna ... and text.
ENVIRONMENT
WMGlobe uses the setlocale(3) function, so you LANG environment need to
be ok.
You need WindowMaker 0.62 or higher to use WMGlobe. (use WMGlobe 1.0
for older versions of WindowMaker).
SEE ALSO
The Window Maker User Guide
The Window Maker FAQ
AUTHOR
jerome dumonteil <jerome.dumonteil@linuxfr.org>
Patches, bug reports, and suggestions are welcome.
CREDITS
WMGlobe is Copyright (C) 1998,99 by Jerome Dumonteil and licensed
through the GNU General Public License. Read the COPYING file for the
complete GNU license.
Original idea, tests, logos:
Sylvestre Taburet <Sylvestre.Taburet@free.fr>
WindowMaker 0.62 fix : Charles G Waldman <cgw@fnal.gov>
The code in 'sunpos.cpp' is taken from Xearth by Kirk Lauritz Johnson.
/* sunpos.c kirk johnson july 1993
code for calculating the position on the earth's surface for which the
sun is directly overhead (adapted from _practical astronomy with your
calculator, third edition_, peter duffett-smith, cambridge university
press, 1988.)
Copyright (C) 1989, 1990, 1993, 1994, 1995 Kirk Lauritz Johnson
Parts of the source code (as marked) are:
Copyright (C) 1989, 1990, 1991 by Jim Frost
Copyright (C) 1992 by Jamie Zawinski <jwz@lucid.com>
Permission to use, copy, modify and freely distribute xearth for non-
commercial and not-for-profit purposes is hereby granted without fee,
provided that both the above copyright notice and this permission
notice appear in all copies and in supporting documentation. */
The rendering engine is taken from XGlobe by Thorsten Scheuermann
XGlobe Homepage: http://www.uni-karlsruhe.de/~uddn/xglobe
Raster graphics library by Alfredo K. Kojima, & stuff of Window Maker
<http://windowmaker.org> by A. K. Kojima, Dan Pascu, Matthew Hawkins &
team
BUGS
If you use the --enable-single-icon compile time option of Window‐
Maker, you can not display more than one WMGlobe.
WMGlobe hopes that an overflow of a long integer dont generate an error
and that LONG_MAX +1 = LONG_MIN . This happens with high values of
-accel when the date go over year 2038. The expected result is wmglobe
continuing smoothly from 1901.
Using WMGlobe at high speed through a LAN may induce some load on the
net.
august 2001 WMGlobe(1.3)
