Re: Baskervald ADF Virtual Math Fonts

[Hans Hagen <pragma@wxs.nl>]

On 4/13/2014 8:32 AM, joasyannick@gmail.com wrote:
> Hello,
>
> I am going to solve my problem here:
>
>     http://tex.stackexchange.com/questions/123647/from-xelatexs-unicode-math-to-contexts-typescript
>
>
> with virtual math fonts. I use Baskervald ADF instead of Libertine. I
> was pleased to see that the following files produced effects:
>
> Extract from environment file fonts.tex:
> ------------------------------------------------
> \startenvironment fonts
>      \starttypescript [math] [fonts]
>          \loadfontgoodies[baskervald-math]
>
> \definefontsynonym[MathRoman][file:texgyrepagella-math@baskervald-math]
>      \stoptypescript
>      \definetypeface [fonts] [mm] [math] [fonts] [default]
> [features=default]
>      \setupbodyfont [fonts, 12pt]
> \stopenvironment
> -------------------------------------------------------------------------------------------------------
>
> Extract from goodies file baskervald-math.lfg:
> ------------------------------------------
> return {
>      name = "baskervald-math",
>      version = "1.00",
>      comment = "Goodies that give math support for the Baskervald ADF
> font.",
>      author = "author",
>      copyright = "copyrigth",
>      mathematics = {
>          virtuals = {
>              ["baskervald-math"] = {
>                  { name = "texgyrepagella-math.otf", features =
> "virtualmath", main = true },
>                  { name = "BaskervaldADFStd.otf", features =
> "virtualmath", vector = "tex-mr-missing" } ,
>                  { name = "BaskervaldADFStd-Italic", vector = "tex-it" } ,
>                  { name = "BaskervaldADFStd-Bold.otf", vector =
> "tex-bf", skewchar=0x7F } ,
>                  { name = "BaskervaldADFStd-BoldItalic.otf", vector =
> "tex-bi" } ,
>                  { name = "corbel.ttf", vector = "tex-ss", optional=true },
>                  { name = "UbuntuMono-R.ttf", vector = "tex-tt",
> optional=true },
>              },
>          }
>      }
> }
> ---------------------------------------------------------------------------------------------------------
>
> Now I have two questions.
>
> The first and most important question is: Where do I define my own
> vector mapping? Should I modify ConTeXt’s source code in the
> math-ttv.lua file? How do I define my own baskervald-math.lua and what
> should I write in it (for example for mapping Pagella’s upright
> mathematic glyphs to Baskervald’s upright glyphs)?

the virtual math font mechanism is normally used for type one math fonts 
overlayed over open type text fonts

if you have a proper opentype math font you can better use fallbacks 
(the fallback mechanism for math looks the same as for text but is 
implemented differently)

see type-imp-euler.mkiv for an example


> The second question is this. I have the following Project structure:
>
> Book (root directory)
> Book/book.tex (Project file)
> Book/fonts.tex (environment file)
> Book/Volume1 (subdirectory)
> Book/Volume1/volume1.tex (product file)
> Book/Volume1/Chapter1 (subsubdirectory)
> Book/Volume1/Chapter1/chapter1.tex (component file)
>
> I am forced to put the goodies file baskervald-math.lfg in
> Book/Volume1/Chapter1. When I put it in Book and compiled chapter1.tex
> separately ConTeXt failed to find it. What should I do to have the file
> baskervald-math.lfg in the Book directory and make ConTeXt find it when
> invoked from Book/Volume1/Chapter1.





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                                           Hans Hagen | PRAGMA ADE
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