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Kolekcja fontów TEX Gyre: kolejna odsłona

Jackowski B., Pianowski P., Strzelczyk P.

Acta Poligraphica

2018

Vol. 12

17--30

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.

Uogónione krzywe pościgowe

Icha A.

Modelowanie Inżynierskie

2017

T. 31, nr 62

29--36

Praca dotyczy wybranych zagadnień krzywych przestępnych pojawiających się przy analizie problemów pościgowych. Krótko omówiono klasyczne zagadnienie pogoni oraz zaprezentowano rezultaty modelowania uogólnionych problemów pościgowych przy wykorzystaniu języka programowania MetaPost i systemu obliczeń symbolicznych Maple. Otrzymano i przedstawiono realizacje krzywych pogoni dla wybranych, zadanych krzywych ucieczki obejmujących: prostą (test), okrąg, parabolę, asteroidę, krzywą Talbota, bikorn oraz trzy krzywe autorskie.

The paper deals with selected problems concerning the transcendental curves that arise when analyzing pursuit problems. The classical chase problem is described briefly, and the results of modelling the generalized pursuit problems are presented, using the MetaPost and the Maple software. The following chase curves are obtained for the prescribed escape curves, namely, the line (for the test),the circle, the parabola, the asteroid, the Talbot curve, the bicorn, and the three own curves.