Thanks Mark, That’s really useful - thanks for the pointer, and nice to see you here!
Alex > On 5 Nov 2024, at 08:28, Mark Knoop <m...@opus11.net> wrote: > > Hi Alex, > > Basically yes, this should all be possible at the 'user' level in scheme. You > probably will want to write a custom engraver. Take a look at the 'Defining > an engraver in Scheme: ambitus engraver' example on this page: > https://lilypond.org/doc/v2.23/Documentation/snippets/contexts-and-engravers, > and also at the scm/scheme-engravers.scm file. > > Cheers, > > Mark > > At 18:42 on 04 Nov 2024, Alex Harker wrote: >> Hello, > >> I’m working on a score where I likely need to be able to >> notate multiple pedals (sometimes simultaneously) for a >> pedal steel part. I’d like these to look somewhat like the >> piano sustain mixed notation (and eventually have the >> possibility of more complex graphical shapes) > >> I can easily modify the sustain pedal stencil to draw what >> I want as a one off, but what I’d really like to do is >> extend lilypond temporarily to allow this across a whole >> score with custom commands per pedal. > >> I’ve looked through various scm files, and I have a sense >> of what I’d need to copy/modify/add, but it looks like >> define-grobs.scm and define-music-types.scm add items to >> some kind of global variables, (such as >> music-descriptions) and some of these might then get >> manipulated after creation, so I’m not really sure how >> possible this without modifying core lilypond files. > >> My preferred way of doing this would not be to modify >> lilyponds internal code at all, but just to add further >> scheme code purely to create my score. Is there any way >> this is possible (to add new events/objects in this way? >> Any advice would be gratefully appreciated. > >> Thanks > >> Alex > > -- > Mark Knoop
