December 2008
Intermediate to advanced
912 pages
33h 22m
English
Content preview from CJKV Information Processing, 2nd Edition
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Glyph Sets
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409
Glyph sets necessarily evolve, usually due to new or expanded character set standards on
which they are based. Sometimes, changes to or expansion of glyph sets is due to Ta ro’s
Law.
*
Static Versus Dynamic Glyph Sets
Now that we have described today’s most widely used font formats, it is clearly useful to
write about the distinction between static and dynamic glyph sets. Today’s fonts gener-
ally dier as to whether their glyph sets are static or dynamic, and can be described as
follows:
A static glyph set
Based on a standard, meaning that any font that is based on a static glyph set is pre-
dictable and stable. Static glyph sets are advantageous when building large volumes of
fonts. e development and testing of such fonts is greatly simplied, in my opinion
and experience.
A dynamic glyph set
Allows font developers to add new glyphs on a whim.
TrueType fonts, by denition, are based on dynamic glyph sets. OpenType fonts can be
either. OpenType fonts with name-keyed ‘CFF’ tables are based on dynamic glyph sets.
Only CID-keyed fonts, including CID-keyed ‘CFF’ tables, are based on static glyph sets.
e concept of “character collection,” as used by CID-keyed fonts, is a real-world imple-
mentation of static glyph sets. Interestingly, and as you will learn in this chapter, it is
possible to build OpenType fonts with CID-keyed ‘CFF’ tables that are based on dynamic
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.