This is a quick Amiga port, done by me, of Torben Æ. Mogensen's great program "Planet"
The following is taking from the original author's "Readme":
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Planet
Planet generating program
Copyright 1988-2002 Torben Æ. Mogensen
With additions by Jim Burrows
The program generates planet maps based on recursive spatial
subdivision of a tetrahedron containing the globe (earlier versions
used a rectangular box). The output is a bitmap file, with a choice of
different formats.
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Included in this archive is the original source and data files as well as optimized
executables for the 68020, 68040, and 68060. For demonstation I've also included two
sample pictures called A1200map.png and A1200globe.png
This map was created with the following command:
planet -s .0021 -i -0.01 -l 135 -w 800 -h 400 -ps -g 45 -G 45 -c -o A1200map.bmp
A1200globe.png was created with the same map but with orthographic projection and
bumpmapping. A brief description of all options can be seen below.
WARNING! -- This program is CPU INTENSIVE. A1200map.png took ~5 min to generate on
my 50MHz 68060.
HINTS -- Experiment with low resolution images first, they take CONSIDERABLY less
time to generate. Once you have a map you like, then generate a high res
version.
-- Use the undocumented "-X" option (I found it in the source)
This option outputs a "progress bar" to the console so you know
the program is actually working.
If you have any questions, comments, etc about the Amiga version of this program,
please email me:
Michael A. Piva
michpiva@shaw.ca
Usage: planet [options]
options:
-s seed Specifies seed as number between 0.0 and 1.0
-w width Specifies width in pixels, default = 800
-h height Specifies height in pixels, default = 600
-m magnification Specifies magnification, default = 1.0
-o output_file Specifies output file, default is standard output
-l longitude Specifies longitude of centre in degrees, default = 0.0
-L latitude Specifies latitude of centre in degrees, default = 0.0
-g gridsize Specifies vertical gridsize in degrees, default = 0.0 (no grid)
-G gridsize Specifies horisontal gridsize in degrees, default = 0.0 (no grid)
-i init_alt Specifies initial altitude (default = -0.02)
-c Colour depends on latitude (default: only altitude)
-C Use lighter colours (doesn't work with -a option)
-N nocols Use nocols number of colours (default = 256, minimum = 5)
-a Switch to alternative colour scheme.
-M file Read colour definitions from file
-O Produce a black and white outline map
-E Trace the edges of land in black on colour map
-B Use ``bumpmap'' shading
-A angle Angle of ``light'' in bumpmap shading
-P Use PPM file format (default is BMP)
-x Use XPM file format (default is BMP)
-b Reverse background colour (default: black)
-V number Distance contribution to variation (default = 0.03)
-v number Altitude contribution to variation (default = 0.4)
-pprojection Specifies projection: m = Mercator (default)
p = Peters
q = Square
s = Stereographic
o = Orthographic
g = Gnomonic
a = Area preserving azimuthal
c = Conical (conformal)
M = Mollweide
S = Sinusoidal
h = Heightfield
f = Find match, see below
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