Différences

Ci-dessous, les différences entre deux révisions de la page.

--- fichiers:fontes:que_sont_les_fontes_virtuelles [2018/05/24 17:00] – joseph.wright
+++ 5_fichiers:fontes:que_sont_les_fontes_virtuelles [2021/02/01 20:38] (Version actuelle) – Correction des liens internes. Ajout de références. jejust
@@ Ligne 1: / Ligne 1: @@
----
+====== What are virtual fonts? ======
-section: Bits and pieces of (La)TeX
-permalink: /FAQ-virtualfonts
-date: 2014-06-10
----
-# What are virtual fonts?
 Virtual fonts provide a means of collecting bits and pieces together
 to make the glyphs of a font: the bits and pieces may be glyphs from
-''other'' fonts, rules and other ''basic'' typesetting commands, and
+"other" fonts, rules and other "basic" typesetting commands, and
 the positioning information that specifies how everything comes
 together.
@@ Ligne 16: / Ligne 11: @@
 implemented by David Fuchs to use an unusual printer.  However, for
 practical purposes for the rest of us, virtual fonts date from when Knuth
-specified a format and wrote some support software, in 1989 (he
+specified a format and wrote some support software, in 1989 (he published
-published an
+an [[https://tug.org/TUGboat/tb11-1/tb27knut.pdf|article in TUGboat]]
-[article in _TUGboat_](http://tug.org/TUGboat/tb11-1/tb27knut.pdf)
+at the time; [[http://tug.ctan.org/info/virtual-fonts.knuth|plain text copy on CTAN]]).
-at the time; a plain text copy is available on CTAN).
 Virtual fonts provide a way of telling TeX about something more
 complicated than just a one-to-one character mapping.  TeX reads a
-TFM file of the font, just as before, but the DVI
+TFM file of the font, just as before, but the DVI processor will
-processor will read the VF and use its content to specify how
+read the VF and use its content to specify how each glyph is to
-each glyph is to be processed.
+be processed.
 The virtual font may contain commands:
+  * to “open” one or more (real) fonts for subsequent use,
+  * to remap a glyph from one of the (real) fonts for use in the virtual font,
--  to ''open'' one or more (real) fonts for subsequent use,
+  * to build up a more complicated effect (using DVI commands).
--  to remap a glyph from one of the (real) fonts for use in the
-    virtual font,
--  to build up a more complicated effect (using DVI commands).
 In practice, the most common use of virtual fonts is to remap
-Adobe Type 1 fonts (see [font metrics](FAQ-metrics.md)),
+Adobe Type 1 fonts (see [[5_fichiers:fontes:fichiers_de_metriques_pour_les_fontes_t1|font metrics]]),
-though there has also been useful useful work building ''fake'' maths
+though there has also been useful useful work building "fake" maths
 fonts (by bundling glyphs from several fonts into a single virtual
 font).  Virtual Computer Modern fonts, making a
-[Cork encoded](FAQ-ECfonts.md) font from Knuth's originals by using
+[[5_fichiers:fontes:que_sont_les_fontes_ec|Cork encoded]] font from Knuth's
-remapping and fragments of DVI for single-glyph ''accented
+originals by using remapping and fragments of DVI for single-glyph
-characters'', were the first ''Type&nbsp;1 format'' Cork-encoded Computer
+“accented characters”, were the first “Type 1 format” Cork-encoded Computer
 Modern fonts available.
 Virtual fonts are normally created in a single ASCII VPL
 (Virtual Property List) file, which includes two sets of information.
-The `vptovf` utility will use the VPL file to create
+The ''vptovf'' utility will use the VPL file to create
 the binary TFM and VF files.
-A ''how-to'' document, explaining how to generate a VPL,
+A "how-to" document, explaining how to generate a VPL,
 describes the endless hours of fun that may be had, doing the job by
 hand.  Despite the pleasures to be had, the commonest way (nowadays)
-of generating an VPL file is to use the
+of generating an VPL file is to use the ''fontinst'' package, which
-`fontinst` package, which is described in more detail
+is described in more detail together with the discussion of
-together with the discussion of
+[[5_fichiers:fontes:fichiers_de_metriques_pour_les_fontes_t1|PostScript font metrics]].
-[PostScript font metrics](FAQ-metrics.md).
+[[ctanpkg>Qdtexvpl|Qdtexvpl]] is another utility for creating ad-hoc virtual
-[`Qdtexvpl`](https://ctan.org/pkg/Qdtexvpl) is another utility for creating ad-hoc virtual
 fonts (it uses TeX to parse a description of the virtual font, and
-`qdtexvpl` itself processes the resulting DVI file).
+''qdtexvpl'' itself processes the resulting DVI file).
+-----
+//Sources://
+  * [[faquk>FAQ-virtualfonts|What are virtual fonts?]]
+  * [[https://hal.archives-ouvertes.fr/hal-02100361/document|Virtual Fonts:  Great Fun, Not for Wizards Only]] by Yannis Haralambous,
+  * [[https://tex.stackexchange.com/questions/25852/how-to-create-a-virtual-font|How to create a virtual font?]]
+{{htmlmetatags>metatag-keywords=(LaTeX,polices de caractères,fonte,table de caractère)
+metatag-og:title=(What are virtual fonts?)
+metatag-og:site_name=(FAQ LaTeX francophone)
+}}