u...@openlilylib.org writes: > Hi all, > > I just came across the issue of printing coloured scores and wondered > if it's possible to use CMYK colours in LilyPond. From what the NR > says this seems impossible but I wanted to ask anyway. > > If it is *not* possible, what would be - theoretically - the > complexity of adding support for that? > It might be rather straightforward to provide a conversion function in > Scheme (ignoring the issue of colour profiles), but I'm talking of > native support.
LilyPond does not actually track colors in any manner if I remember correctly. It just passes them through. So take a look at how RGB support is done, and CMYK support should be straightforward to add. Instead of adding new user-level commands, you could just permit the color commands to accept lists with 4 members as well as three and then just let the backends emit different commands. That's minimally invasive but would not allow us to use RGBA in a similar manner. But maybe partial transparency is better dealt with using separate primitives anyway. -- David Kastrup _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
