# from Dan Falck # on Saturday 03 April 2010 14:47: >I often wondered how Postscript would do for this. The .ps, .pdf, and .svg formats all suffer from a slightly weak curve model (so you have to approximate splines) and a rather ad-hoc drawing model (.ps is even a turing-complete programming language), which makes it difficult to distinguish between a circle and and arc, and it's possible to have arbitrarily complex "path" objects (containing islands, may or may not be closed, etc.) There are some more elaborate options with fills, but this is significantly different than hatching, and these formats place far more emphasis on rendering/stroke than mathematical representation. There is also no "dimension" object, leader lines, and some related concepts. That's all fine if you just want to print something or look at it, but not so great for programmatically manipulating things, and probably puts a kink in any kind of two-way relation or geometry generation. --Eric -- [...proprietary software is better than gpl because...] "There is value in having somebody you can write checks to, and they fix bugs." --Mike McNamara (president of a commercial software company) --------------------------------------------------- http://scratchcomputing.com ---------------------------------------------------