From: Wolfgang Schuster <schuster.wolfgang@googlemail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: question about MPpositiongraphic
Date: Sat, 3 Jan 2009 15:26:25 +0100 [thread overview]
Message-ID: <737ED430-F3D6-4375-903E-8ADCD46D58F3@gmail.com> (raw)
In-Reply-To: <D0702F0F-822D-4CE1-8218-B844F0FF9EED@uni-bonn.de>
Am 03.01.2009 um 15:02 schrieb Thomas A. Schmitz:
> Hi all,
>
> first, best wishes for the New Year to all of you - may 2009 bring
> peace and fortune and world domination for ConTeXt!
>
> And my little question - trivial for the resident experts, I guess,
> but I can't find a solution: I want to write a little macro that
> will allow me to place a thin curved line under letters (metrical
> symbol for synizesis). Now that metafun is so fast in mkiv, I
> thought I'd use a MPpositiongraphic for that purpose, but my problem
> is that I can't make the graphic really local - when it is used more
> than once in a document, Metafin uses the last values for all
> occurrences. I tried grouping and the "save" command, but to no
> avail. Here's an example that shows the problem:
>
> \startMPpositiongraphic{placesynizesis}
> StartPage ;
> begingroup ; save a ;
> initialize_box(\MPpos{\MPvar{self}}) ;
> numeric a ; a = ExHeight/6 ;
> z1 = llxy ;
> z2 = lrxy ;
> z3 = 1/2[z1,z2] ;
> z4 = ((x1 + 2a),(y1 - 2a)) ;
> z5 = (x3, (y3 - 4a)) ;
> z6 = ((x2 - 2a),(y2 - 2a)) ;
> path syn ; syn := z4 .. z5 .. z6 ;
> pickup pencircle scaled a ;
> draw syn ;
> anchor_box(\MPanchor{\MPvar{self}}) ;
> endgroup ;
> StopPage ;
> \stopMPpositiongraphic%
> \setMPpositiongraphic{POS}{placesynizesis}
>
> \define[1]\synizesis
> {\hpos{POS}{#1}}
>
> \starttext
>
> \switchtobodyfont[25pt]
>
> test: \synizesis{au} and \synizesis{aeiou}
>
> \stoptext
>
> Any solution to this conundrum?
\newcount\synizesisnumber
\define[1]\synizesis
{\advance\synizesisnumber\plusone
\setMPpositiongraphic{POS-\number\synizesisnumber}{placesynizesis}
\hpos{POS-\number\synizesisnumber}{#1}}
Wolfgang
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next prev parent reply other threads:[~2009-01-03 14:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-03 14:02 Thomas A. Schmitz
2009-01-03 14:26 ` Wolfgang Schuster [this message]
2009-01-04 12:59 ` Thomas A. Schmitz
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