In article <cadvh14ul9igw6wyvymg80hymiaxxhzfoc0no_4+dr70knok...@mail.gmail.com>, Andre Caldas <andre.em.cal...@gmail.com> wrote:
> Hello, list! > > I am writing down a macro package for commutative diagrams using metafun. > This is my first try: > https://bitbucket.org/andrecaldas/math-video-classes/src/9a050eab20348c9a9c9e5 > 0740618173648979f45/src/environments/diagrams.tex?at=default > > Used here: > https://bitbucket.org/andrecaldas/math-video-classes/src/9a050eab2034/src/prod > ucts/assorted/open_mapping_theorem/notes/introduction.tex?at=default#cl-106 > > But I would like to use some "object oriented" like approach. That is, > I'd like the diagram data structure to be set up like this: > > d = CD.new; > d.vertex("$X$"); d.arrow("$f$"); d.vertex("$Y$"); > d.newline; > d.arrow("$\pi$"); d.arrow("$\pi$"); > d.vertex("$A$"); d.arrow("$g$"); d.vertex("$B$"); > > or even in some "thelabel" similar fashion, > > d = CD.new; > CD.vertex(d, "$X$"); CD.arrow(d, "$f$"); CD.vertex(d, "$Y$"); > CD.newline(d); > CD.arrow(d, "$\pi$"); CD.arrow(d, "$\pi$"); > CD.vertex(d, "$A$"); CD.arrow(d, "$g$"); CD.vertex(d, "$B$"); > > > How do I do that in METAFUN/METAPOST? You may want to take a look at my attempt: http://users.dimi.uniud.it/~nicola.vitacolonna/home/content/metappeal It is a library intended to provide a minimal framework for “oo-like” constructs. It is a work in progress (actually, I have not worked on it for a while since I didn't receive any feedback) and the documentation is a bit messy, but the core is stable and well tested and should be compatible with MetaFun. It is all based on a pair of macros that generalize MetaPost declarations, a first draft of which is shortly described here: http://oldwww.gust.org.pl/projects/pearls/2011p/index_html For the functionality you are describing, you may just need to grab the file metappeal.mp (and the files that it includes) and include it in your source. Nicola ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________
