>> is it possible to pass data from MetaPost back to TeX? This would be similar
>> in spirit to, say, the MetaPost variable BodyFontSize that contains data
>> from the TeX surrounding. Just the other way round.
>
> maybe future mlib versions will provide something like that (writing
> something from mp to a lua table); currently you have to use a file or
> interpret the log (use show to print out values).
OK. What I have in mind is to vertically align a diagram with the math axis...
something like:
---
\startuseMPgraphic{diagram}
u := StrutHeight;
draw origin--(2u,0)--(u,sqrt(3)*u)--cycle;
% MathAxis at y-coordinate sqrt(3)*u/3
\stopuseMPgraphic
\starttext
\startformula
A\useMPgraphic{diagram}
=B
\stopformula
\stoptext
---
It would be great if the comment could be turned into a processing instruction
for ConTeXt such that the triangle's center of mass ends up on the math axis of
the formula.
What's the best way to achieve this?
Many thanks,
Oliver
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