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P.S. Please, that piece of code is perfectly valid, there's no need to break it every month. There is nothing wrong with it, still it was changed (and simultaneously broken) 4 or 5 times already. That code use a smart trick to draw the multi diagonal gradient using integer operations, that is perfectly valid and moreover is much faster than the classical floating point calculation algorithm that was used before, so there is no need to randomly 'fix' it every now and then. If you don't understand how it works please ask.
WindowMaker raster graphics library This library is used to manipulate images and convert them to a format that can be displayed through the X window system. Read the wraster.h header for an idea of what is available This Library is LGPL and Copyright (c) Alfredo K. Kojima <kojima@inf.ufrgs.br> The following environment variables control some parameters: RIMAGE_CACHE <integer> Is the maximum number of images to store in the internal cache. Default is 8 RIMAGE_CACHE_SIZE <integer> Is the size of the biggest image to store in the cache. Default is 4k (64x64) Porting ======= It should be fairly easy to port it to other environments (svgalib, libggi etc), probably only requiring wraster.h, context.c and convert.c to be changed. Note that the X specific code should be disabled in that case, including support for libXpm.