[NTG-context] Mathematical MetaFun Mania

[Hans Hagen]

On 12/15/2022 5:15 PM, Gavin wrote:
> Hi Hans and List,
> 
>>> 2) Can I tell \connectboxanchors to use my MetaPost code and pass key=value pairs like I do with \setMPpositiongraphic?
>> see attached ... the 'cross pages' feature is in the upcoming
> 
> This indeed passes key=value pairs, but I cannot get it to pass mine. Is there some intermediate step? Your example has a key=value pair in \connectboxanchors and which is accessed in the MetaPost code. The pair, and MetaPost code are:
> 
>    rulethickness=1pt
>    mpvard “rulethickness"
> 
> However, if I change the pair and MPcode to (see attached example for full code)
> 
>    myrulethickness=1pt
>    mpvard “myrulethickness"
> 
> it doesn’t work. Similarly, you have a pair and MPcode that don’t match.
> 
>    rulecolor=darkgreen
>    mpvars "linecolor"
> 
> This may be a historical fluke, but it suggests that there is some intermediate translation that I am missing. Any way I can name and pass by own key=value pairs?
I updated lmtx so you can test it again.

Hans

ps. For the adventurous some bonus experiment in the engine:

\def\ccc#1#2#3#4#5#6#7#8#9#A#B#C#D#E#F%
   {\def\ddd{#A-#D-#E/#F-#4-#1}%
    #A-#D-#E/#F-#4-#1+\ddd}

so, upto 15 arguments:

[[\ccc123456789abcdef]]

(not that we need it in the context core, so more a gimmick for users 
and it fits the much is already hex approach)

Hans

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