Hi Urs, On Mon, Feb 6, 2017 at 5:26 AM, Urs Liska <u...@openlilylib.org> wrote: > Hi all, > > if I override a Tie/Slur's stencil I can easily (well, now, after your > help ...) get to the note columns at both ends. > > Is it possible to retrieve a list of all objects *between* those ends too? > Concretely I would like to know if there are ties within a slurred > phrase and to determine peak notes/stems in order to do some sort of > collision-handling-like layout decisions. >
One way would be to follow pointers. Most objects store references to other objects. In the case of Slur, consulting Internal Properties at http://lilypond.org/doc/v2.19/Documentation/internals/slur_002dinterface shows that a grob array of note columns traversed is available through the 'note-columns property (which you would access through ly:grob-object). BTW, you'd probably want to use ly:grob-array->list to work with the array more conveniently.. There are then pointers to other objects held by each NoteColumn grob. You can "go higher," too: use parentage (ly:grob-parent), or get the grob's associated paper column with ly:item::get-column. PaperColumn and NonMusicalPaperColumn will store references to many grobs (through the 'elements property from the axis-group-interface) -- Or, you could get all elements on a line (through the 'all-elements property of the System grob) and filter by location. This seems a bit inefficient to me. Sorry, no time right now for a working code snippet, but I hope this is helpful. Best, David _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
