Re: Re[4]: MetaTricks?

[Hans Hagen <pragma@wxs.nl>]

At 05:42 PM 2/7/2003 +0100, Jens-Uwe Morawski wrote:
>On Thu, 6 Feb 2003 23:35:14 +0100
>Giuseppe Bilotta <gip.bilotta@iol.it> wrote:
>
> > Thursday, February 6, 2003 Jens-Uwe Morawski wrote:
> >
> > JUM> as you know, PSTricks is a huge package, so where to start?
> >
>
> > In particular, there are a few things that I currently see as
> > "missing" in (plain) MetaPost (and which I couldn't find in
> > MetaFun either); for example, there is no macro that allows to
> > "add" drawoptions; you can only replace them altogether. PSTricks,
> > OTOH (at least for what I could see) has a default color, pensize
> > and line style which can be changed singularly (MetaPost seems to
> > only do this for the pen --currentpen; it doesn't have a
> > currentcolor or currentstyle).
>
>Do you mean something like in the attached files?
>keyvalmp.mp : package for key-value parameters in MP; used in mpt-conf.mp
>               (BTW, if anybody knows a better way to implement this, please
>                let me know)

nice example of expansion and redefinition of symbols

about this picture key/val problem: how about passing it as string, say

   SomePic=pic("picture stuff")

Hans
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