From: Taco Hoekwater <taco@elvenkind.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: processaction inside MP graphic
Date: Thu, 13 May 2010 09:30:30 +0200 [thread overview]
Message-ID: <4BEBAA96.7020108@elvenkind.com> (raw)
In-Reply-To: <h2ua920c95c1005121022red42679cnaf11fb93d190a124@mail.gmail.com>
Vianney le Clément wrote:
> Hello,
>
> I'm having some trouble with a macro using \processaction inside a
> metapost graphic. Here is a minimal example.
>
> \def\Shape#1%
> {\processaction[#1]
> [square=>unitsquare,
> circle=>unitcircle]}
> \starttext
> \startuseMPgraphic{test}
> fill \Shape{square} scaled 1cm;
> \stopuseMPgraphic
> \useMPgraphic{test}
> \stoptext
>
> It stops with the error "Use of \p!compareprocessaction doesn't match
> its definition."
Like many of the more complex commands, \processaction does not
expand totally. If you are using mkiv, you could define \Shape
like this:
\def\Shape#1%
{\directlua{
local known = {square = 'unitsquare', circle = 'unitcircle' }
tex.sprint(known[#1] or 'unitsquare')}}
I don't know of a simple solution for mkii.
Best wishes,
Taco
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next prev parent reply other threads:[~2010-05-13 7:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-12 17:22 Vianney le Clément
2010-05-13 7:30 ` Taco Hoekwater [this message]
2010-05-13 8:45 ` Vianney le Clément
2010-05-13 9:13 ` luigi scarso
2010-05-13 9:19 ` Hans Hagen
2010-05-13 11:04 ` Vianney le Clément
2010-05-13 11:12 ` luigi scarso
2010-05-13 11:16 ` Vianney le Clément
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