Re: [NTG-context] processaction inside MP graphic

2010/5/13 Vianney le Clément :

On Thu, May 13, 2010 at 09:30, Taco Hoekwater wrote:

...

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')}}

Thanks Taco. That does the trick provided you enclose #1 with quotes:

\def\Shape#1%  {\directlua{    local known = {square = 'unitsquare', circle = 'unitcircle' }    tex.sprint(known['#1'] or 'unitsquare')}}

Another, maybe uglier but plain TeX, solution I've come up with is defining auxiliary macros:

\def\ShapeSSSsquare{unitsquare} \def\ShapeSSScircle{unitcircle} \def\Shape#1{\csname ShapeSSS#1\endcsname}

But of course, this does not handle unknown options (though that could be added).

I'll add this to the wiki.

Vianney ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!

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Also \getparameters[Shape][square={unitsquare }, circle={unitcircle }] \starttext \startuseMPgraphic{test} fill \Shapesquare scaled 1cm; \stopuseMPgraphic \useMPgraphic{test} \stoptext %%%%%%%%%%%%%% \setevalue{square}{unitsquare} \setevalue{circle}{unitcircle} \starttext \startuseMPgraphic{test} fill \getvalue{square} scaled 1cm; \stopuseMPgraphic \useMPgraphic{test} \stoptext -- luigi