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- From: bkph@kauai.ai.mit.edu (Berthold K.P. Horn)
- Newsgroups: comp.fonts
- Subject: Re: Adobe Type Manager, WFNBoss, Corel Draw
- Message-ID: <1hn49gINNkb3@life.ai.mit.edu>
- Date: 28 Dec 92 14:51:28 GMT
- Article-I.D.: life.1hn49gINNkb3
- References: <1992Dec18.125202.13638@ircam.fr> <OM39NTM@math.fu-berlin.de>
- Organization: MIT Artificial Intelligence Lab
- Lines: 30
- NNTP-Posting-Host: kauai.ai.mit.edu
- In-reply-to: wolff@inf.fu-berlin.de's message of Tue, 22 Dec 1992 20:11:16 GMT
-
-
- In article <OM39NTM@math.fu-berlin.de> wolff@inf.fu-berlin.de (Thomas Wolff) writes:
-
-
- I wrote a program to adjust all the many problems with fonts converted
- from WFN fonts. It works on decrypted .pfb files (using another PD
- package). It changes the UniqueID, renames some wrongly-named characters
- and generates some missing characters from outlines of similar ones.
-
- ...
-
- Then it compresses the font program by finding out common subpaths and
- placing them into subroutines. (This is a good idea for many other PD
- fonts as well, they get reduced in size by ca. 20% without loss of
- information.)
-
- Using Subrs for common subshapes is a great idea, with one major problem:
- hinting. The rmoveto's, rlineto's and rcurveto's are all relative, and so
- can be easily used to generate the same shape in different positions.
- But hints are all absolute (with respect to the left side bearing point).
- So the shared code better not contain any hints. But then, if it was made
- by WFNBoss it doesn't contain any hints anyway. And if it was made by Font*
- (wild-card expansion required here), then the `hints' are all at the
- beginning of the CharString and there is no problem either. But please
- don't destroy a good commercial quality font that uses hint replacement,
- for example, by applying this method for extracting common subshapes...
- Ah, I just noticed you said `PD fonts' in your posting (:-).
-
- Berthold K.P. Horn
- Cambridge, Massachusetts, USA
-