From: Nicola <nvitacolonna@gmail.com>
To: ntg-context@ntg.nl
Subject: Re: OOP in Metafun.
Date: Mon, 10 Dec 2012 10:56:56 +0100 [thread overview]
Message-ID: <nvitacolonna-C48C2B.10565610122012@news.gmane.org> (raw)
In-Reply-To: <CADVh14UL9iGw6WyVyMG80hymiaxxhZfoc0nO_4+dR70KnOkn+A@mail.gmail.com>
In article
<CADVh14UL9iGw6WyVyMG80hymiaxxhZfoc0nO_4+dR70KnOkn+A@mail.gmail.com>,
Andre Caldas <andre.em.caldas@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
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next prev parent reply other threads:[~2012-12-10 9:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-09 18:55 Andre Caldas
2012-12-09 23:32 ` Andre Caldas
2012-12-10 9:56 ` Nicola [this message]
2012-12-11 2:11 ` Andre Caldas
2012-12-11 10:21 ` Nicola
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