%% This is part of OpTeX project, see http://petr.olsak.net/optex \_codedecl \normalmath {Math fonts CM + AMS preloaded <2020-05-06>} % preloaded in format \_doc ------------------------------ We have two math macros \`\normalmath` for normal shape of all math symbols and \`\boldmath` for bold shape of all math symbols. The second one can be used in bold titles, for example. These macros load all fonts from all given math font families. \_cod ------------------------------ \_def\_normalmath{% \_loadmathfamily 0 cmr % CM Roman \_loadmathfamily 1 cmmi % CM Math Italic \_loadmathfamily 2 cmsy % CM Standard symbols \_loadmathfamily 3 cmex % CM extra symbols \_loadmathfamily 4 msam % AMS symbols A \_loadmathfamily 5 msbm % AMS symbols B \_loadmathfamily 6 rsfs % script \_loadmathfamily 7 eufm % fractur \_loadmathfamily 8 bfsans % sans serif bold \_loadmathfamily 9 bisans % sans serif bold slanted (for vectors) % \_setmathfamily 10 \_tentt % \_setmathfamily 11 \_tenit \_setmathdimens } \_def\_boldmath{% \_loadmathfamily 0 cmbx % CM Roman Bold Extended \_loadmathfamily 1 cmmib % CM Math Italic Bold \_loadmathfamily 2 cmbsy % CM Standard symbols Bold \_loadmathfamily 3 cmexb % CM extra symbols Bold \_loadmathfamily 4 msam % AMS symbols A (bold not available?) \_loadmathfamily 5 msbm % AMS symbols B (bold not available?) \_loadmathfamily 6 rsfs % script (bold not available?) \_loadmathfamily 7 eufb % fractur bold \_loadmathfamily 8 bbfsans % sans serif extra bold \_loadmathfamily 9 bbisans % sans serif extra bold slanted (for vectors) % \_setmathfamily 10 \_tentt % \_setmathfamily 11 \_tenbi \_setmathdimens } \_count18=9 % families declared by \newfam are 12, 13, ... \_def \normalmath {\_normalmath} \_def\boldmath {\_boldmath} \_doc ----------------------------- The classical math family selectors \`\mit`, \^`\cal`, \^`\bbchar`, \^`\frak` and \^`\script` are defined here. The \^`\rm`, \^`\bf`, \^`\it`, \^`\bi` and \^`\tt` does two things: they are variant selectors for text fonts and math family selectors for math fonts. The idea was adapted from plain \TeX/.\nl These macros are redefined when `unimat-codes.opm` is loaded, see the section~\ref[unimath-codes]. \_cod ----------------------------- \_chardef\_bffam = 8 \_chardef\_bifam = 9 %\_chardef\_ttfam = 10 %\_chardef\_itfam = 11 \_protected\_def \_rm {\_tryloadrm \_tenrm \_fam0 } \_protected\_def \_bf {\_tryloadbf \_tenbf \_fam\_bffam} \_protected\_def \_it {\_tryloadit \_tenit \_fam1 } \_protected\_def \_bi {\_tryloadbi \_tenbi \_fam\_bifam} \_protected\_def \_tt {\_tryloadtt \_tentt} \_protected\_def \_mit {\_fam1 } \_protected\_def \_cal {\_fam2 } \_protected\_def \_bbchar {\_fam5 } % double stroked letters \_protected\_def \_frak {\_fam7 } % fraktur \_protected\_def \_script {\_fam6 } % more extensive script than \cal \_public \rm \bf \it \bi \tt \mit \cal \bbchar \frak \script ; \_doc ----------------------------- The optical sizes of Computer Modern fonts, AMS and other fonts are declared here. \_cod ----------------------------- %% CM math fonts, optical sizes: \_regtfm cmmi 0 cmmi5 5.5 cmmi6 6.5 cmmi7 7.5 cmmi8 8.5 cmmi9 9.5 cmmi10 11.1 cmmi12 * \_regtfm cmmib 0 cmmib5 5.5 cmmib6 6.5 cmmib7 7.5 cmmib8 8.5 cmmib9 9.5 cmmib10 * \_regtfm cmtex 0 cstex8 8.5 cstex9 9.5 cstex10 * \_regtfm cmsy 0 cmsy5 5.5 cmsy6 6.5 cmsy7 7.5 cmsy8 8.5 cmsy9 9.5 cmsy10 * \_regtfm cmbsy 0 cmbsy5 5.5 cmbsy6 6.5 cmbsy7 7.5 cmbsy8 8.5 cmbsy9 9.5 cmbsy10 * \_regtfm cmex 0 cmex7 7.5 cmex8 8.5 cmex9 9.5 cmex10 * \_regtfm cmexb 0 cmexb10 * \_regtfm cmr 0 cmr5 5.5 cmr6 6.5 cmr7 7.5 cmr8 8.5 cmr9 9.5 cmr10 11.1 cmr12 15 cmr17 * \_regtfm cmbx 0 cmbx5 5.5 cmbx6 6.5 cmbx7 7.5 cmbx8 8.5 cmbx9 9.5 cmbx10 11.1 cmbx12 * \_regtfm cmti 0 cmti7 7.5 cmti8 8.5 cmti9 9.5 cmti10 11.1 cmti12 * \_regtfm cmtt 0 cmtt10 11.1 cmtt12 * %% AMS math fonts, optical sizes: \_regtfm msam 0 msam5 5.5 msam6 6.5 msam7 7.5 msam8 8.5 msam9 9.5 msam10 * \_regtfm msbm 0 msbm5 5.5 msbm6 6.5 msbm7 7.5 msbm8 8.5 msbm9 9.5 msbm10 * %% fraktur, rsfs, optical sizes: \_regtfm eufm 0 eufm5 5.5 eufm6 6.5 eufm7 7.5 eufm8 8.5 eufm9 9.5 eufm10 * \_regtfm eufb 0 eufb5 5.5 eufb6 6.5 eufb7 7.5 eufb8 8.5 eufb9 9.5 eufb10 * \_regtfm rsfs 0 rsfs5 6 rsfs7 8.5 rsfs10 * %% bf and bi sansserif math alternatives: \_regtfm bfsans 0 ecsx0500 5.5 ecsx0600 6.5 ecsx0700 7.5 ecsx0800 8.5 ecsx0900 9.5 ecsx1000 11.1 ecsx1200 * \_regtfm bisans 0 ecso0500 5.5 ecso0600 6.5 ecso0700 7.5 ecso0800 8.5 ecso0900 9.5 ecso1000 11.1 ecso1200 * \_regtfm bbfsans 0 ecsx0500 5.5 ecsx0600 6.5 ecsx0700 7.5 ecsx0800 8.5 ecsx0900 9.5 ecsx1000 11.1 ecsx1200 * \_regtfm bbisans 0 ecso0500 5.5 ecso0600 6.5 ecso0700 7.5 ecso0800 8.5 ecso0900 9.5 ecso1000 11.1 ecso1200 * \_doc ----------------------------- \`\_loadmathfamily` ` ` loads one math family, i.\,e.\ the triple of fonts in the text size, script size and script-script size. The `` is `` used in the `\_regtfm` parameter or the real TFM name. The family is saved as `\fam`. \nl \`\_setmathfamily` ` \` loads one math family like `\_loadmathfamily` does it. But the second parameter is a `\` declared previously by the `\font` primitive. \nl The font family is loaded at \`\_sizemtext`, \`\_sizemscript` and \`\_sizemsscript` sizes. These sizes are set by the \`\setmathsizes` `[//]` macro. These parameters are given in the \`\ptmunit` unit, it is set to 1\`\ptunit` and it is set to 1\,pt by default. \nl \`\_corrmsizes` should be used in the \^`\normalmath` and \^`\boldmath` macros if you need a size correction when a selected math family is loaded. It is similar as ex-height correction but for math fonts. \_cod ----------------------------- \_def\_corrmsizes{\_ptmunit=1\_ptunit\_relax} % for corrections of sizes in diferent fomts \_def\_loadmathfamily #1 #2 {\_chardef\_tmp#1\_corrmsizes \_edef\_optsizesave{\_the\_optsize}% \_optsize=\_sizemtext \_font\_mF=\_whichtfm{#2} at\_optsize \_textfont#1=\_mF \_optsize=\_sizemscript \_font\_mF=\_whichtfm{#2} at\_optsize \_scriptfont#1=\_mF \_optsize=\_sizemsscript \_font\_mF=\_whichtfm{#2} at\_optsize \_scriptscriptfont#1=\_mF \_optsize=\_optsizesave \_relax } \_def\_setmathfamily #1 #2{\_let\_mF=#2\_chardef\_tmp#1\_corrmsizes \_edef\_optsizesave{\_the\_optsize}% \_optsize=\_sizemtext \_fontlet#2=#2 at\_optsize \_textfont#1=#2% \_optsize=\_sizemscript \_fontlet#2=#2 at\_optsize \_scriptfont#1=#2% \_optsize=\_sizemsscript \_fontlet#2=#2 at\_optsize \_scriptscriptfont#1=#2% \_optsize=\_optsizesave \_let#2=\_mF } \_def\_setmathsizes[#1/#2/#3]{% \_def\_sizemtext{#1\_ptmunit}\_def\_sizemscript{#2\_ptmunit}% \_def\_sizemsscript{#3\_ptmunit}% } \_newdimen\_ptunit \_ptunit=1pt \_newdimen\_ptmunit \_ptmunit=1\_ptunit \_public \setmathsizes \ptunit \ptmunit ; \_doc ----------------------------- The \`\_setmathdimens` macro is used in \^`\normalmath` or \^`\boldmath` macros. It makes math dimensions dependent on the font size (plain \TeX/ sets them only for 10\,pt typesetting). The `\skewchar` of some math families are set here too. \_cod ----------------------------- \_def\_setmathdimens{% PlainTeX sets these dimens for 10pt size only: \_delimitershortfall=0.5\_fontdimen6\_textfont3 \_nulldelimiterspace=0.12\_fontdimen6\_textfont3 \_scriptspace=0.05\_fontdimen6\_textfont3 \_skewchar\_textfont1=127 \_skewchar\_scriptfont1=127 \_skewchar\_scriptscriptfont1=127 \_skewchar\_textfont2=48 \_skewchar\_scriptfont2=48 \_skewchar\_scriptscriptfont2=48 \_skewchar\_textfont6=127 \_skewchar\_scriptfont6=127 \_skewchar\_scriptscriptfont6=127 } \_doc ----------------------------- Finaly, we preload a math fonts colleciton in [10/7/5] sizes when the format is generated. This is done when `\_suppressfontnotfounderror=1` because we need not errors when format is generated. Maybe there are not all fonts in the \TeX/ distribution installed. \_cod ----------------------------- \_suppressfontnotfounderror=1 \_setmathsizes[10/7/5]\_normalmath \_suppressfontnotfounderror=0 \_endcode %--------------------------------------------------- The Computer Modern and AMS fonts are preloaded here in classical math-fam concept, where each math family includes three fonts with max 256 characters (typically 128 characters). On the other hand, when \^`\fontfam` macro is used in the document then text font family and appropriate math family is loaded with Unicoded fonts, i.e. Unicoded-math is used. It re-defines all settings given here. The general rule of usage the math fonts in different sizes in \OpTeX/ says: set three sizes by the macro \^`\setmathsizes` `[//]` and then load all math fonts in given sizes by \^`\normalmath` or \^`\boldmath` macros. For example \begtt \setmathsizes[12/8.4/6]\normalmath ... math typesetting at 12 pt is ready. \endtt \_endinput 2020-05-06: \itfam, \ttfam removed, (Unicode math preferred) 2020-04-14: \skewchar\fam6 added