Re: part combiner

[Han-Wen Nienhuys]

address@hidden wrote:
> > address@hidden wrote:
> >
> > > Hi, I am not sure of the function of Recording_group_engraver.  What
> > > should I change, and how will it change the scheme code?
> > > > From looking at the c++ code it doesn't appear to do much.
> > > If it records the time signature, then will it be added between the
> > > other
> > > events?
> >
> > the Recording_group_engraver now records events. You could also record
> > changes to  properties.  The result is a vector, which is
> > read out from
> >
> >   make-part-combine-music
> >
> > (see scm/part-combiner.scm).
>
>
> As far as I can see the music events are recorded in try_music.  Which
> method do I have to add to record property changes?  

Try process_music(). You will have to read the properties, check them 
against values in the previous time steps, and modify the data structure 
where events are stored to also contain property values.


> Sorry, I am not
> so familier with lilypond internals.  Perhaps could you give me some
> source files that I should read to get more info?

Sure! They're in lily/*.cc  :)

In all seriousness: your question is too vague for me to answer.

> I read part-combiner, and I think it works as follows:
> make-part-combine-music puts the events in noticed, and from there
> it gets passed to the function determine-split-list.  That function
> returns a list of moments and descriptions.  So I just need to change
> the determine-split-list function.  Is that right?

yes.



--
 Han-Wen Nienhuys - address@hidden - http://www.xs4all.nl/~hanwen