From: John Hudson (tiro@tiro.com)
Date: Sat Apr 26 2003 - 16:16:54 EDT
At 01:09 AM 4/26/2003, William Overington wrote:
>So, how wide should I make U+2003 in font units please?
This should equal the UPM value of your font, since this is the scaling
factor applied by the rasteriser. The actual height of the glyphs in your
font is not equivalent to the *body* height which is determined by the UPM
value. In TT fonts, the UPM value can be any value you like, e.g. you could
change it to equal the actual height of your tallest characters, but is
usuall a power of 2 (which gives a miniscule performance improvement) and
is typically 2048. In the latter case, your em space, dash, etc. should be
2048 units wide. This ensures that these glyphs are e.g. 12pts wide in 12pt
text.
John Hudson
Tiro Typeworks www.tiro.com
Vancouver, BC tiro@tiro.com
As for the technique of trimming the nib,
Do not be greedy!
I will not reveal its nuances; I withhold its secrets.
- Ibn al-Bawwab, Ra'iyyah
This archive was generated by hypermail 2.1.5 : Sat Apr 26 2003 - 16:54:23 EDT