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%% This is part of the OpTeX project, see http://petr.olsak.net/optex
\_famdecl [Latin Modern] \LMfonts {TeX Gyre fonts based on Coputer Modern}
{\roman \sans \quotset \ttset \ttprop \ttlight \ttcond \upital
\dunhill submods:\caps \slant \nbold \bolder} {\rm \bf \it \bi \tt} {LM}
{[lmroman10-regular]}
{\_def\_fontnamegen {[\_optname{lm\_subfamV.\_currV}]:\_fontfeatures}}
\_wlog{\_detokenize{%
Modifiers (selects subfamily):^^J
\modreset .. implicit values (serif, bold extended, nocaps)^^J
\sans ...... sans serif subfamily^^J
\quotset ... quotation subfamily^^J
\ttset ..... typewriter subfamily^^J
\ttprop .... proportional typewriter-like subfamily^^J
\ttlight ... light typewriter subfamily^^J
\ttcond .... condensed typewriter subfamily^^J
\upital .... upright italic (only \rm)^^J
\dunhill ... dunhill roman subfamily (only \rm, \it)^^J%
Sub-modifiers (selects special variants of given subfamily):^^J
\caps ...... caps & small caps (available only at limited shapes)^^J
\slant ..... slanted (default in some subfamilies)^^J
\nbold ..... normal bold (extended bold is default)^^J
\bolder .... extended bold^^J%
Note: Text fonts support optical sizes, but LatinModern-Math only for scripts.^^J
Use another CM-like family if optical sizes not wanted: \fontfam[NewCM].
}}
\_def\_LMregfont #1 #2 #3{%
\_edef\_tmp {\_noexpand\_regoptsizes #1 #2 \_ea\_detokenize\_ea{#3}}%
\_lowercase\_ea{\_tmp}% OTF file names are lowercase
}
\_def \_regoptFS {5 <5.5 6 <6.5 7 <7.5 8 <8.5 9 <9.5 10 <11.1 12 <15 17 <*}
\_def \_regoptFT {5 <5.5 6 <6.5 7 <7.5 8 <8.5 9 <9.5 10 <11.1 12 <*}
\_def \_regoptST {7 <7.5 8 <8.5 9 <9.5 10 <11.1 12 <*}
\_def \_regoptES {8 <8.5 9 <9.5 10 <11.1 12 <15 17 <*}
\_def \_regoptET {8 <8.5 9 <9.5 10 <11.1 12 <*}
\_def \_regoptT {10 <*}
\_def \_regoptE {8 <*}
\_LMregfont lmrm.r LMRoman?-Regular \_regoptFS % 5-17
\_LMregfont lmrm.bx LMRoman?-Bold \_regoptFT % 5-12
\_LMregfont lmrm.i LMRoman?-Italic \_regoptST % 7-12
\_LMregfont lmrm.bxi LMRoman?-BoldItalic \_regoptT % 10
\_LMregfont lmrm.isl LMRomanSlant?-Regular \_regoptES % 8-17
\_LMregfont lmrm.bxisl LMRomanSlant?-Bold \_regoptT % 10
\_LMregfont lmrm.b LMRomanDemi?-Regular \_regoptT % 10
\_LMregfont lmrm.bi LMRomanDemi?-Oblique \_regoptT % 10
\_LMregfont lmss.r LMSans?-Regular \_regoptES % 8-17
\_LMregfont lmss.bx LMSans?-Bold \_regoptT % 10
\_LMregfont lmss.i LMSans?-Oblique \_regoptES % 8-17
\_LMregfont lmss.bxi LMSans?-BoldOblique \_regoptT % 10
\_LMregfont lmss.b LMSansDemiCond?-Regular \_regoptT % 10
\_LMregfont lmss.bi LMSansDemiCond?-Oblique \_regoptT % 10
\_LMregfont lmsq.r LMSansQuot?-Regular \_regoptE % 8
\_LMregfont lmsq.b LMSansQuot?-Bold \_regoptE % 8
\_LMregfont lmsq.i LMSansQuot?-Oblique \_regoptE % 8
\_LMregfont lmsq.bi LMSansQuot?-BoldOblique \_regoptE % 8
\_LMregfont lmtt.r LMMono?-Regular \_regoptET % 8-12
\_LMregfont lmtt.b LMMonoLt?-Bold \_regoptT % 10
\_LMregfont lmtt.i LMMono?-Italic \_regoptT % 10
\_LMregfont lmtt.bi LMMonoLt?-BoldOblique \_regoptT % 10
\_LMregfont lmtt.isl LMMonoSlant?-Regular \_regoptT % 10
\_optfontalias {lmtt.bisl} {lmtt.bi}
\_LMregfont lmtp.r LMMonoPropLt?-Regular \_regoptT % 10
\_LMregfont lmtp.bx LMMonoPropLt?-Bold \_regoptT % 10
\_LMregfont lmtp.i LMMonoPropLt?-Oblique \_regoptT % 10
\_LMregfont lmtp.bxi LMMonoPropLt?-BoldOblique \_regoptT % 10
\_LMregfont lmtp.b LMMonoProp?-Regular \_regoptT % 10
\_LMregfont lmtp.bi LMMonoProp?-Oblique \_regoptT % 10
\_LMregfont lmtl.r LMMonoLt?-Regular \_regoptT % 10
\_LMregfont lmtl.i LMMonoLt?-Oblique \_regoptT % 10
\_LMregfont lmtc.r LMMonoLtCond?-Regular \_regoptT % 10
\_LMregfont lmtc.i LMMonoLtCond?-Oblique \_regoptT % 10
\_LMregfont lmrm.rc LMRomanCaps?-Regular \_regoptT % 10
\_LMregfont lmrm.ic LMRomanCaps?-Oblique \_regoptT % 10
\_LMregfont lmtt.rc LMMonoCaps?-Regular \_regoptT % 10
\_LMregfont lmtt.ic LMMonoCaps?-Oblique \_regoptT % 10
\_LMregfont lmmu.r LMRomanUnsl?-Regular \_regoptT % 10
\_LMregfont lmdu.r LMRomanDunh?-Regular \_regoptT % 10
\_LMregfont lmdu.sl LMRomanDunh?-Oblique \_regoptT % 10
% main modifiers (they select a subfamily)
\_moddef \resetmod {\_fsetV subfam=rm \_fvars r bx i bxi }
\_moddef \sans {\_fsetV subfam=ss \_fvars r bx i bxi }
\_moddef \quotset {\_fsetV subfam=sq \_fvars r b i bi }
\_moddef \ttset {\_fsetV subfam=tt \_fvars r b i bi }
\_moddef \ttprop {\_fsetV subfam=tp \_fvars r b i bi }
\_moddef \ttlight {\_fsetV subfam=tl \_fvars r . i . }
\_moddef \ttcond {\_fsetV subfam=tc \_fvars r . i . }
\_moddef \upital {\_fsetV subfam=mu \_fvars r . . . }
\_moddef \dunhill {\_fsetV subfam=du \_fvars r . sl . }
% submodifiers (they select special vaiants in a subfamily)
\_moddef \nbold {\_onlyif subfam=rm,ss,tp: {\_fvars r b i bi }}
\_moddef \bolder {\_onlyif subfam=rm,ss,tp: {\_fvars r bx i bxi }}
\_moddef \slant {\_onlyif subfam=rm: {\_fvars r bx isl bxisl }%
\_onlyif subfam=tt: {\_fvars r b isl bisl }}
\_moddef \caps {\_onlyif subfam=rm,tt: {\_fvars rc . ic . }}
\_def \_tryloadtt {\_fontdef\_tentt{\_LMfonts \_addto\_fontfeatures{-tlig;}\_ttset \_rm}}
\_private \LMfonts \ttset ; % used in \_tryloadtt
\_initfontfamily % new font family must be initialized
\_loadmath {[latinmodern-math]}
\_endcode
\secc How to write the font family file with optical sizes
You can use \^`\_optname` macro when `\_fontnamegen` in expanded. This macro is fully
expandable and its input is `<internal-template>` and its output is a
part of the font file name `<size-dependent-template>` with respect to given
optical size.
You can declare a collection of `<size-dependent-template>`s for one
given `<internal-template>` by the \^`\_regoptsizes` macro.
The syntax is shown for one real case:
\begtt
\_regoptsizes lmr.r lmroman?-regular
5 <5.5 6 <6.5 7 <7.5 8 <8.5 9 <9.5 10 <11.1 12 <15 17 <*
\endtt
In general:
\begtt \catcode`\<=13
\_regoptsizes <internal-template> <general-ouput-template> <resizing-data>
\endtt
Suppose our example above. Then `\_optname{lmr.r}` expands to
lmroman?-regular where the question mark is substituted by a number
depending on current `\_optsize`. If the `\_optsize` lies between two boundary
values (they are prefixed by \code{<} character) then the number written between
them is used. For example if $11.1 \lt `\_optsize` \le 15$ then 12 is
substituted instead question mark. The <resizing-data> virtually begins
with zero \code{<0}, but it is not explicitly written. The right part of
<resizing-data> must be terminated by \code{<*} which means "less than infinity".
If `\_optname` gets an argument which is not registered <internal-template>
then it expands to `\_failedoptname` which typically ends with an error message
about missing font. You can redefine `\_failedoptname` macro to some
existing font if you find it useful.
We are using a special macro `\_LMregfont` in `f-lmfonts.opm`.
It sets the file names to
lowercase and enables us to use shortcuts instead of real <resizing-data>.
There are shortcuts `\_regoptFS`, `\_regoptT`, etc. here. The collection of
`<internal-templates>` are declared, each of them covers a collection of real
file names.
The \^`\_optfontalias` `{<new-template>} {<internal-template>}` declares
`<new-template>` with the same meaning as previously declared
`<internal-template>`.
The `\_optname` macro can be used even if no otical sizes are provided by
a font family. Suppose that font file names are much more chaotic (because
artists are very creative people), so you need to declare more systematic
`<internal-templates>` and do an alias from each `<internal-template>` to
`<real-font-name>`. For example, you can do it as follows:
\begtt
\def\fontalias #1 #2 {\_regoptsizes #1 ?#2 {} <*}
% alias name real font name
\fontalias crea-a-regular {Creative Font}
\fontalias crea-a-bold {Creative FontBold}
\fontalias crea-a-italic {Creative olique}
\fontalias crea-a-bolditalic {Creative Bold plus italic}
\fontalias crea-b-regular {Creative Regular subfam}
\fontalias crea-b-bold {Creative subfam bold}
\fontalias crea-b-italic {Creative-subfam Oblique}
\fontalias crea-b-bolditalic {Creative Bold subfam Oblique}
\endtt
Another example of a font family with optical sizes is Antykwa Półtawskiego.
The optical sizes feature is deactivated by default and it is switched on by
`\osize` font modifier:
\printdoc f-poltawski.opm
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