#4 ✓resolved
Eric S

Opentype: CFF or Truetype?

Reported by Eric S | September 19th, 2010 @ 10:09 PM

Making a little conversion script based on Dave’s work ( http://article.gmane.org/gmane.comp.freedesktop.fonts/1741 ),
to generate font files from the UFO.

And I wondered: are these cubic or quadratic Bézier curves?

If I understand correctly, in the former case it would make more sense to generate Opentype with Postscript outlines, and in the latter Opentype with Truetype outlines.

Comments and changes to this ticket

  • Simon Pascal Klein

    Simon Pascal Klein October 23rd, 2010 @ 03:22 PM

    I believe they’re quadratic. Having a script to auto create (T/o)TFs would certainly help in creating ‘builds’ that people can use, test, and get excited about. (:

  • Eric S

    Eric S February 6th, 2011 @ 04:19 PM

    Actually, FontForge turned out to be smart enough to figure everything out for itself. But I believe it’s actually cubic outlines: i.e., for every control point there are two handles.

    So it’s a PostScript font. I’ve also managed to compile it with the Adobe Font Development Kit, which is a compiler for OpenType/CFF fonts.

    There’s a whole discussion on TrueType vs PostScript, which starts out as a discussion on hinting, on the Open Font Library list:


    Erik van B tells me most fonts are initially drawn in PostScript, because drawing is easier with cubic beziers. Then, if it needs to be converted TrueType, some subsequent work is done on the TrueType outlines, because conversion algorithms aren’t perfect.

  • Eric S

    Eric S February 11th, 2011 @ 12:14 PM

    • State changed from “new” to “resolved”

Please Sign in or create a free account to add a new ticket.

With your very own profile, you can contribute to projects, track your activity, watch tickets, receive and update tickets through your email and much more.

New-ticket Create new ticket

Create your profile

Help contribute to this project by taking a few moments to create your personal profile. Create your profile »

Open Baskerville is an open source project to create a digital revival of the famous ‘Baskerville’ typefaces. To be more exact, Open Baskerville is based upon Fry’s Baskerville, a Baskerville derivative created by Isaac Moore, a punchcutter who worked for John Baskerville. work. The font is to be licensed under either the SIL OFL or the GNU GPL v3.

People watching this ticket