On Mon, Jan 7, 2013 at 9:30 AM, Johannes Rohrer <s...@johannesrohrer.de> wrote:
> Adam Spiers <lilypond-user <at> adamspiers.org> writes:
>
>> I've noticed that MIDI generation doesn't honour transparent notes,
>> e.g. in
>>
>> f8( \hideNotes \grace { c16 \glissando } \unHideNotes f8)
>>
>> a NoteOn event is generated for the c16. Hopefully I should be able
>> to address this if someone gives me a few pointers. My first guess
>> was to tweak Note_performer::process_music() by adding something like:
>>
>> if (to_boolean(n->get_property ("transparent")))
>> break;
>
> It won't be that simple I'm afraid. "transparent" is not an event property
> that
> you can read here, but a grob property. \hideNotes presets it for various
> graphical objects (Dots, NoteHead, Stem, Beam, Accidental, Rest, TabNoteHead),
> using override commands like this:
>
> \override NoteHead.transparent = ##t
>
> But during MIDI generation, no such objects are ever created.
Ah, of course.
> From a note event, Note_performer creates an AudioNote object, a type of
> AudioElement, and those are formally analogue to grobs. It would be nice if
> you
> could override a property again, like this:
>
> \override AudioNote.mute = ##t
That would be ideal, yes!
> Unfortunately, the AudioElement class, which is rather primitive compared to
> Grob, does not currently provide any scheme property interface. (Changing this
> is an item on my imaginary LilyPond project list, but I am still learning
> myself.)
>
> For now, working around the problem with tags might be more productive?
OK, but I'm not sure how tags could be used for this. Are they
available to Note_performer, or did you mean something else?
Thanks a lot!
Adam
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