add tex_annotation!()

[Moelf]

julia> using CairoMakie, MakieTex

julia> MakieTeX.CURRENT_TEX_ENGINE[] = `tectonic`

julia> function main()
           f,a,_ = plot(1:3, 1:3)
           MakieTeX.tex_annotation!(a, L"\sqrt{s} = 13~\text{TeV}", 1.5, 1.5;
           scale_factor=2)

           MakieTeX.tex_annotation!(a, L"\sqrt{s} = 13~\text{TeV}", 2.5, 2.5;
           mainfont="DejaVu Sans",
           scale_factor=2.5)

           MakieTeX.tex_annotation!(a, L"\sqrt{s} = 13~\text{TeV}", 1.5, 1.4;
                  mathfont="Nimbus Sans",
                  scale_factor=2)
           CairoMakie.save("/tmp/jl_onm7cZSLiJ.png", f)
       end

for #36

[Moelf]

user needs to have font installed, on linux, check fc-list

[asinghvi17]

This looks pretty cool! I would prefer we go through the to_plottable_cachedtex pipeline here, and make the mathfont etc changes there, since there is already a lot of logic there surrounding color, fontsize, line spacing, etc.

[asinghvi17]

Whoa cool! I didn't know you could do that.

Do \bf, \it, \sc etc work correctly with this?

[Moelf]

probably, we can probably have a comprehensive test of making 2x2x2 different math on the same canvase as a sanity check

two caveats:

• I can't find the default font's name
• I'm yet to fully understand how the exactly interaction between multiple set*font work

[asinghvi17]

The default font in Makie is "TeX Gyre Heros Makie", it's in the assets folder of Makie (I think).
I guess we should set the default math font to also be whichever math font relates to TeX Gyre Heros? This is what I was trying to do earlier, in building up a set of known font families for which we have good math fonts.

[Moelf]

you can use https://tug.org/FontCatalogue/ to find fonts with math support. https://ctan.org/pkg/tex-gyre-heros?lang=en by the look of it, it's basically Nimbus, but yeah we can default to it. And in that case a good math font is probably https://tug.org/FontCatalogue/urwnimbusroman/

[Moelf]

Bump?