2014-07-23 21:45 GMT+02:00 fantasai <[email protected]>: > c) Text justification can elongate glyphs and/or expand spaces, but > because > the script is cursive, cannot introduce inter-letter spacing
Cursive scripts can use inter-letter "spacing". in fact many OpenType fonts fot such scripts include the necessary mapping to a joining glyph that can be safely elongated or repeated or truncated to fill the gap and preserve the interletter joining. They also use contextual glyphs: when the script is horizontal, the joining glyph is typically an horizontal stroke but there are case where it may be diagonal or split in three parts with the central part horizontal and elongatable. In the Arabic script this glyph is even encoded as compatibility character (with some eastern styles used in Persian, Urdu or Uyghur, the vertical placement of the joining glyph is complex) But you can do the same as well for other cursive scripts such as Devanagari. It's possible as well for the Mongolian script (even if its fonts are built with a 90 degrees clockwise rotation so that by default they render left-to-right with lines staked top to bottom like Latin, and the traditional rendering is vertical by just rotating glyphs 90 degrees clockwise so they render lines top-to-bottom and stack lines right to left (like with Sinograms, Yi, Tangut, Bopomofo, Hirag111ana, Katakana and with old Hangul styles; except these scripts almost never need rotation of glyphs because they are most often not joined in cursive styles) In some calligraphic artworks painted with brushes, creative cursive styles are very difficult to reproduce with a general purpose font: these artworks are best reproduced with graphic formats such as SVG; that do not need any text encoding with Unicode (except for the embedded metadata containing descriptive plain text or alternated text).
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