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Whatsnew
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1996-05-19
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What's New in Gforge version 1.3? --------------------- 5/18/96 jpb
-- Updated zlib, png libraries again. Switched to DJGPP v.2 compiler.
-- Used the latest zlib and pnglib libraries, now compiles on DEC Alpha.
3/5/96 jpb
-- Changed input-line parser so syntax errors would actually be noticed,
instead of ignored. 1/8/95 jpb
-- Updated n-dimensional FFT routine to fix some bugs that would never
be visible in this implementation anyway. 1/8/95 jpb
What's New in Gforge version 1.2b? ---------------------- 12/16/95 jpb
-- Bugfix for default random -seed timebomb. Ooops! A date-dependent
integer overflow condition in the random number seed was fixed.
What's New in Gforge version 1.2a? ---------------------- 9/20/95 jpb
-- New -seed behavior. Now, if you specify a different resolution and
use the same -seed value as before, the image will look the same
(but, obviously, at a different resolution). Good for quickly roughing
out the shape you want and then generating at high quality later.
-- Beginnings of a Tcl/Tk graphical interface, tenatively named Xforge.
(so far, useful only on X-Windows on Unix systems)
What's New in Gforge version 1.1f? ---------------------- 8/8/95 jpb
-- New format: output to 16-bit greyscale PNG format, using the included
pnglib and zlib compression libraries. Source is now 4x larger; sorry!
Thanks to G.E. Schalnat at Group 42 Inc. for PNGLIB, and J-l Gailly
and Mark Adler for ZLIB.
-- Filtering options: bandpass, bandreject: <center frequency> <Q-value>
Center frequency is normalized, ranges from 0.0 to 1.0
Q values in the range 0.5-50 are typical.
for lowpass, highpass: <cutoff frequency> <filter order>
The filters tend to give you very UNrealistic landscapes, but then again
that might be what you're looking for.
-- Returned crater creation to Heiko's original bigger-craters-overlay-
smaller-ones structure, minor cosmetic code clean-ups
What's New in Gforge version 1.1? ------------------------ 7/27/95 jpb
-- New -crater option, takes two optional arguments <density> and
<vertical_scale>, gives you great looking lunar landscapes.
Thanks to Heiko Eissfeldt for this contribution!
-- Better control of nonlinear height scaling with the -limit option.
Good for lake basins, valleys, and plateau forms.
-- Better random number generator eliminates diagonal streaks at higher
dimensions and meshsizes. Now that the generator is internal, the same
-seed value will give you identical results on any machine gforge
can be compiled on (well, if you've got at least 24 bits matissa in your
floating point type, which doesn't exclude much).
-- Better FFT routine can handle any meshsize, not just powers of 2.
What's New in Gforge version 1.0f? ---------------------------------
-- Output to OCT and MAT types, the latter being Matlab binary-compatible
giving you 32 bit floating-point values for the highest accuracy.
OCT is the Octave ascii floating-point type.
---------------------------------------------------------------------
Gforge v1.0c was the initial release, contained basic
functionality. (May 1995)