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From: Hans Hagen <pragma@wxs.nl>
To: context <ntg-context@ntg.nl>
Subject: Re: MetaPost instance mechanism broken
Date: Thu, 06 Dec 2012 23:12:21 +0100	[thread overview]
Message-ID: <50C11845.9080905@wxs.nl> (raw)
In-Reply-To: <20121206191009.GB26897@homerow>

On 12/6/2012 8:10 PM, Marco Patzer wrote:
> On 2012–11–25 Marco Patzer wrote:
>
>> in one of the last few betas the MetaPost instance
>> mechanism broke.
>
> Did the interface change again? The following does not work on
> today's beta, only “alpha” and “gamma” are printed.
>
> \defineMPinstance
>    [myinstance]
>    [metafun]
>
> \startuseMPgraphic{alpha}
>    draw textext("alpha") ;
> \stopuseMPgraphic
>
> \startuseMPgraphic{myinstance::beta}
>    draw textext("beta") ;
> \stopuseMPgraphic
>
> \starttext
>    \useMPgraphic{alpha}
>    \useMPgraphic{myinstance::beta}
>    \startMPcode{myinstance}
>      draw textext("gamma") ;
>    \stopMPcode
> \stoptext

sure, we have a different interface on odd days

Currently instances are played with a bit (as Alan and I want the 
chemical module to run in its own but also want it to be public).

Anyhow, one complication is in the related variables. I now have a 
version that supports this:

\defineMPinstance
   [myinstance]
   [metafun]

\startuseMPgraphic{alpha}
     draw textext("alpha") ;
\stopuseMPgraphic

\startuseMPgraphic{myinstance::beta}
   draw textext("beta") ;
\stopuseMPgraphic

\startuniqueMPgraphic{myinstance::beta}{width}
   draw textext("beta") xsized \MPvar{width} ;
\stopuniqueMPgraphic

\startuseMPgraphic{myinstance::epsilon}{width,height}
   draw textext("epsilon") xysized (\MPvar{width},\MPvar{height}) ;
\stopuseMPgraphic

\setMPvariables
   [myinstance::beta]
   [width=5cm]

\setMPvariables
   [epsilon]
   [width=5cm,
    height=5cm]

\starttext

     one   : \useMPgraphic{alpha} \blank

     two   : \useMPgraphic{myinstance::beta} \blank

     three : \startMPcode{myinstance} draw textext("gamma") ; 
\stopMPcode \blank

     four  : \reuseMPgraphic{myinstance::beta}{width=2cm} \blank

     five  : \startMPcode{myinstance} draw textext("delta") ; 
\stopMPcode \blank

     six   : \reuseMPgraphic{myinstance::epsilon}{height=2cm} \blank

     seven : \reuseMPgraphic{myinstance::epsilon} \blank

\stoptext

Hans


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      reply	other threads:[~2012-12-06 22:12 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-11-25 17:11 Marco Patzer
2012-11-25 17:40 ` Wolfgang Schuster
2012-11-25 17:40 ` Aditya Mahajan
2012-11-25 18:05   ` Marco Patzer
2012-11-26 14:32     ` Sietse Brouwer
2012-11-26 16:10       ` Marco Patzer
2012-11-26 16:46         ` Aditya Mahajan
2012-11-26 16:50         ` Hans Hagen
2012-12-06 19:10 ` Marco Patzer
2012-12-06 22:12   ` Hans Hagen [this message]

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