[NTG-context] tweaked font options in \definedfontfeature?

[Hans Hagen]

On 1/1/2022 6:05 PM, Pablo Rodriguez via ntg-context wrote:

> I wonder whether it would be possible to add the options for tweaked
> fonts (or at least, xscale and yscale) to \definefontfeature.
> 
> I think this might ease the use of scaled fonts (at least, in some
> documents).
these two are unrelated to font feature so that won't happen .. the 
whole idea is to *not* scale the font and delay that

the three scales are realtime scales and absolute values

\starttext
     {test {\glyphxscale\numexpr 2*\glyphxscale\relax} test}

     \fontspecdef\MyFont \font xscale 500 yscale 2000 % currentfont

     {\MyFont test}
\stoptext

when you enable compact fonts we you actually use these fontspecs (a 
font spec is internally comparable to a so called glue spec which is why 
it's called that way: internally stored in some wierd kind of node .. 
maybe \fontscalespec is better so i might change it when i can't think 
of anything to add to it -- i'm still considering adding some of the 
other realtime glyph properties)

i suppose that at some point we can add a more high level command (or 
integrate it better in style definitions which all depends on usage 
patterns

Hans


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