Re: Feta optical sizes

[Valentin Petzel]

Hello Sam,

look into the metafont definition in the sources. By changing the design_size 
parameter you should be able to create your own set of weights.

Cheers,
Valentin

Am Montag, 5. Dezember 2022, 15:53:48 CET schrieb Sam Speer:
> Dear list,
> 
> I'd like to create a heavier/thicker look for some of my engravings, and
> one way which might work nicely is to bump up the optical weight of the
> feta font.
> 
> For example, I'd like to have a staff size of 16 or 17, but use feta14 or
> feta11.
> 
> But I can't seem to find how to do this. Searching through the manuals for
> font information, one finds mostly information about text fonts, or
> sometimes how to adjust the notation font size with macros like \tiny. I
> don't want the noteheads or other objects to be smaller though -- just to
> use the glyphs from the thicker font weight. Another macro which doesn't
> seem to apply is \magnifyMusic which adjusts everything, including the
> staff.
> 
> I'm fine adjusting all of the other lines (staff, beams, stems, barlines,
> ledger lines) myself; those are straightforward. It's just this font swap
> which I can't figure out.
> 
> I'd like to do something like this:
> 
> \paper {
>   #(define fonts
>     (set-global-fonts
>      #:music "emmentaler-14" ; font filename without suffix and extension
>      #:brace "emmentaler-14" ; font filename without suffix and extension
>    ))
> }
> 
> But as you can see from the comment, you are not supposed to include the
> suffix and in fact this code doesn't work. You have to set the global font
> as a whole "family" as it were. Besides, if I did this, I wouldn't be able
> to have smaller staves for some instruments and use a heavier weight for
> just that staff.
> 
> One workaround that I've thought of is to calculate a smaller page size and
> staff size which would blow up to my desired dimensions, but I'd like to
> avoid that if possible. Another solution which Urs and Janek used for their
> Fried score was to marginally increase the font size of each score item by
> custom amounts, trying to create glyphs which still look like they "fit" in
> the staff but were a bit bolder. A third workaround that occurs to me is to
> create an "EmmentalerTwo" font which just transposes the weights the way
> I'd like. So you can see that I'm able to workaround if necessary. I'm only
> wondering if there is a simpler code-based way which I am not finding.
> 
> Here are some of the pages I've consulted that are most relevant:
> https://lilypond.org/doc/v2.22/Documentation/essay/engraving-details#optical
> -sizing
> https://lilypond.org/doc/v2.21/Documentation/notation/setting-the-staff-siz
> e (auto font weight section)
> https://lilypond.org/doc/v2.21/Documentation/notation/replacing-the-notation
> -font
> https://github.com/openlilylib/snippets/blob/master/fried-library-to-be-sor
> ted/lied-stylesheet.ily

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