Between 17SEP95 and 9JAN96, 448 different WWW sites have downloaded a copy of 'gforge' from this homepage (http://jump.stanford.edu:8080). 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 is normalized, ranges from 0.0 to 1.0 Q values in the range 0.5-50 are typical. for lowpass, highpass: 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 and , 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)