RE: [Devel] OpenType layout as a many-to-many CMAP

[Turner David]

Hello,

> -----Original Message-----
> From: address@hidden [mailto:address@hidden
> Behalf Of Vinod Kumar
> Sent: Friday, July 25, 2003 6:15 AM
> To: address@hidden
> Cc: Werner LEMBERG
> Subject: [Devel] OpenType layout as a many-to-many CMAP
> 
> 
> On Thu, 24 Jul 2003, Werner LEMBERG wrote:
> 
> >   . We've decided that OpenType support must be implemented 
> one level
> >     higher than FreeType, since FreeType is basically a rendering
> >     engine which converts an outline to a bitmap.
> 

To make things clear:

  - the plan is to write a stand-alone library, named "otlayout"
    whose purpose will be the loading, validation and processing
    of OpenType Layout tables. Having something separate should
    ease the testing and debugging of the library.

  - the "otlayout" library will have zero-dependency on FreeType 2.
    and will only accept in-memory images of the relevant tables.
    "fonts" will be abstracted through the usual means.
  
  - Additionnaly, FT2 will provide simple functions to extract
    these tables from a font, or even synthetize some automatically,
    plus an implementation of the "otlayout" font abstraction that
    will be "ready-to-use" by applications.

  - we may add special code in FT2 to handle GPOS-based kerning
    tables, but this will be completely independent

  - we lack time. aagh. but more on this later (I have some
    experimental code)

Hope this helps,

- David Turner
- The FreeType Project  (www.freetype.org)

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