ggen

ggen is a 2-D geometry generator expressed as a c++ class library. It includes output drivers for povray, Superfish, and PostScript. The library performs geometry calculations that include smooth transitions between lines, circles, and ellipses. The calling program has to describe the desired geometry using a constructive series of operations. Since it is run as a c++ program, that can be fully parameterized, conditional, repetitive, etc.

Example of use:

• Start with the program inj3.cc.
• Compile it: make
• Run it: ./inj3 pov >inj3.pov0
• Its immediate output file is inj3.pov0
• You need the povray preamble file inj3_super.pov
• Finally, run povray: $ cat inj3_super.pov inj3.pov0 >inj3.pov; povray +iinj3.pov +oinj3.png +w320 +h240 +d +linclude
• Now you can see the output file inj3.png

Sound weird? Well, I needed it. The PostScript output is useful for debugging a geometry. The Superfish output is used for the real work. povray provides is the de rigour presentation-quality output. In the longer term, this library can be extended to front for other programs (like Urmel), or integrated into them (like my mythical vapor-ware Superfish-like program that might someday calculate S-parameters).

ggen is Copyright 2000, 2010 Larry Doolittle, and may be freely used and copied according to the terms of the GNU General Public License, version 2.

Download snapshots:

• ggen_2000_345.tar.gz
• ggen_2010_336.tar.gz

Documentation is currently almost nonexistent. You're looking at it.

Larry Doolittle
December 2, 2010