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Re: [Freefont-bugs] Off-by-one error in glyph positioning?
From: |
Primoz Peterlin |
Subject: |
Re: [Freefont-bugs] Off-by-one error in glyph positioning? |
Date: |
Fri, 26 Apr 2002 11:02:18 +0200 (METDST) |
On Thu, 25 Apr 2002, Josef W. Segur wrote:
> The 'post' table in FreeSans.ttf causes names to be off-by-one when making
> an AFM file with Richard Kinch's ttf_edit:
> CH <0020> ; WX 278 ; N .notdef ; B 124 0 208 729 ;
> CH <0021> ; WX 278 ; N space ; B 124 0 208 729 ;
> CH <0022> ; WX 355 ; N exclam ; B 52 464 305 709 ;
> There's an extra index entry near the beginning of the table, so in
> addition to those MACglyph names being off by one, the attempt to read
> the string names starts with the last index and gets badly confused:
> CH <0101> ; WX 556 ; N thyphenXAmacronXamacronXAbreveXabreveXAogonekXaogon...
I realise I know less about TrueType indices that I thought I do.
I can see now what you are talking about if I dump the font tables with
showttf <http://bibliofile.mc.duke.edu/gww/FreeWare/MyToys.html>.
Here is an excerpt from the showttf output for FreeSans:
post table (at 263308)
format=00020000
italicAngle=0
underlinePos=-151
underlineWidth=50
fixedpitch=0
mem1=0
mem2=0
mem3=0
mem4=0
Glyph 0 (name index=0) -> ".notdef" U+FFFF
Glyph 1 (name index=1) -> ".null" U+0000
Glyph 2 (name index=2) -> "nonmarkingreturn" U+0000
Glyph 3 (name index=0) -> ".notdef" U+0020
Glyph 4 (name index=3) -> "space" U+0021
...
I can also see the name confusion later on you are talking about. I don't
know yet where the indices of postscript names table are read from,
though.
The same table for FreeMonoBold looks OK, though:
post table (at 275960)
format=00020000
italicAngle=0
underlinePos=-100
underlineWidth=50
fixedpitch=0
mem1=0
mem2=0
mem3=0
mem4=0
Glyph 0 (name index=0) -> ".notdef" U+FFFF
Glyph 1 (name index=1) -> ".null" U+0000
Glyph 2 (name index=2) -> "nonmarkingreturn" U+0000
Glyph 3 (name index=3) -> "space" U+0020
...
I'll have a look and see if I can understand anything. I am also sending
CC to George Williams, tha author of PfaEdit.
With kind regards, Primoz
--
Primož Peterlin, Inštitut za biofiziko, Med. fakulteta, Univerza v Ljubljani
Lipičeva 2, SI-1000 Ljubljana, Slovenija. address@hidden
Tel: +386-1-5437632, fax: +386-1-4315127, http://sizif.mf.uni-lj.si/~peterlin/
F8021D69 OpenPGP fingerprint: CB 6F F1 EE D9 67 E0 2F 0B 59 AF 0D 79 56 19 0F
- [Freefont-bugs] Off-by-one error in glyph positioning?, Primoz Peterlin, 2002/04/08
- Re: [Freefont-bugs] Off-by-one error in glyph positioning?, Josef W. Segur, 2002/04/25
- Re: [Freefont-bugs] Off-by-one error in glyph positioning?,
Primoz Peterlin <=
- Re: [Freefont-bugs] Off-by-one error in glyph positioning?, Primoz Peterlin, 2002/04/26
- Re: [Freefont-bugs] Off-by-one error in glyph positioning?, Primoz Peterlin, 2002/04/26
- Re: [Freefont-bugs] Off-by-one error in glyph positioning?, Josef W. Segur, 2002/04/26
- Re: [Freefont-bugs] Off-by-one error in glyph positioning?, Primoz Peterlin, 2002/04/29
- Re: [Freefont-bugs] Off-by-one error in glyph positioning?, Josef W. Segur, 2002/04/29