Kolekcja fontów TEX Gyre: kolejna odsłona

The TEX Gyre free collection of fonts [15] (released under the GUST Font License [4]) was created from 2006 to 2009 as a free replacement for the renowned standard set of the 35 Type1 fonts by Adobe Systems Inc. The article concerns the first phase of a recent GUST e-foundry project of enhancing the text fonts of the TEX Gyre collection; it describes the project’s essential, most difficult and thus, presumably, most interesting aspects. This “face-lifting” of the text TEX Gyre fonts is mainly rooted in the math part of those fonts. Many symbols contained therein do not need the mathematical extension of the font structure, i.e., the MATH table in OTF files [10], but still prove useful for typesetting technical texts; these, e.g., are mathematical symbols (operators, relational symbols), arrows, geometrical symbols, etc. Such symbols can be used in usual text fonts (without the MATH table).The main goal was to include selected math-oriented symbols into the TEX Gyre text fonts (circa 1000 characters were selected to be included). Apart from that, the structure of the fonts was enhanced by adding the so called anchor mechanism. So far, two fonts, TEX Gyre Pagella (the replacement for Palatino) and TEX Gyre Adventor (the replacement for Avant Garde), are released [6]. Additionally, for the purpose the project, our MetaType 1 engine for generating fonts was improved – it is now completely based on Metapost and Python with FontForge libraries.