CFF was even-odd. CFF2 is non-zero winding. behdad http://behdad.org/
On Tue, Dec 19, 2023 at 9:50 AM Hin-Tak Leung <ht...@users.sourceforge.net> wrote: > This is the same as the winding rule concept (overlap once = wounded > twice) ... I seem to remember one of them is even-odd and the other is > non-zero, and quite fundamental difference between truetype and cff. > > On Tuesday, 19 December 2023 at 13:54:21 GMT, Alexei Podtelezhnikov < > apodt...@gmail.com> wrote: > > > > > > It's easy enough to add FT_OUTLINE_OVERLAP to any glyph loaded from a > > CFF2 font. Whether that makes sense is one thing I'd like advice about. > > There's currently no such code. > > > I would suggest that CFF2 invent a special charstring to mark overlaps > with FT_OUTLINE_OVERLAP only when necessary. Let us know to implement > it in FreeType. > > > https://www.w3.org/TR/WOFF2/#p1 > > WOFF2 is moving towards accepting explicit overlap flags. Perhaps CFF2 can > spare a reserved operator or a two-byte operator. >
