On Sat, Dec 03, 2011 at 08:45:24AM +0200, Tobias Schoel wrote: > > > On 02.12.2011 21:48, Ross Moore wrote: > >Hi Tobias, > > > > > >On 03/12/2011, at 6:06, Tobias Schoel<liesdieda...@googlemail.com> wrote: > > > >>As a teacher I can think of some more Applications. Of course, these are > >>pedagogical: > >> > >>Teaching scripts to beginners (learning to write a primary school, learning > >>to write in a different script when learning another language (or even in > >>the same language: Mongol?): > >> > >>You might want to color single parts of a glyph in order to highlight them. > >>So, for example in a handwritten (see > >>http://de.wikipedia.org/wiki/Schulausgangsschrift or english equivalents I > >>haven't found in the time) "a" the beginning or end-strokes might be > >>colored. > > > >Yes, but are these examples really requiring parts of the same whole > >character coloured differently? > > > >Presuming that the font did allow access to individual glyphs, as if > >separate characters, then would not all meaningful aspects be equally well > >(if not better) encoded by an overlay? > The result would be mostly the same. I don't know if some software > might treat a partially colored glyph and two overlaid glyphs > distuinguishably differently. > > Are overlaids encoded in a font and if yes, how are they accessible > via XeTeX?
Dunno about XeTeX, but in ConTeXt (when used with LuaTeX), you can have a sort of glyph color scheme that says glyph X takes color Y whenever it appears in the document (where X is glyph name whether it is encoded or not), if one wants to color, say the horizontal stroke of A, the font can be built where A is first decomposed in the Lambda-like part and the horizontal stroke, and then positioned together by some glyph positioning rule (or even using negative side bearing for such a simple case.) Someone can right something like that for LaTeX I think, but you would still need LuaTeX (unless someone extends XeTeX of course.) Regards, Khaled -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex