Re: Creates a MIDI note length formatter (issue 5576062)

[Marc Hohl]

Am 31.01.2012 09:28, schrieb David Kastrup:
> Marc Hohl<address@hidden>  writes:
>
> > Am 31.01.2012 08:52, schrieb address@hidden:
> > > On Jan 31, 2012, at 8:48 AM, Marc Hohl wrote:
> > >
> > > > Am 29.01.2012 10:35, schrieb address@hidden:
> > > > > Reviewers: ,
> > > > >
> > > > > Message:
> > > > > The idea here is to create a generic framework that allows for
> > > > > modifications to note lengths (i.e. swing) in the MIDI without having a
> > > > > typographical impact on the score.
> > > > Brilliant idea, from my rather amatheurish point of view!
> > > >
> > > > Regards,
> > > >
> > > > Marc
> > > I nixed the patch because Xavier informed me that one could just
> > > create two separate score blocks, one for layout and one for midi.
> > > This makes it possible to feed different music to the two blocks,
> > > which solves the problem, so it's not necessary to touch the C++
> > > code.
> > No, no! It would be great to use one input for graphical *and* midi
> > output by just applying a suitable make-swing-formatter, written in
> > scheme.
> Nobody keeps you from writing
>
> \midi { \makeSwingFormatter \music }
I tried to write such stuff long ago, but I was told that it is not 
possible to
get the informations about beats and measures within such a scheme function.

Mike's proposal opened a way to get exactly this information.
> and it has the advantage that you can use
> \score { \makeSwingFormatter \music }
> for a much easier check that the swing formatter is doing what you
> want if the swing formatter works by altering _main_ durations.  And if
> the swing formatter works by altering _factors_, you will want it not as
> much for proofreading, but for actual typesetting since it will then
> "swing" the note placement.
>
> > I think this patch would make life much easier!  Writing every pairs
> > of eights as triplets again and again is so annoying ...
> Huh?  Mike did not suggest that you create the swinged version manually.

Oh, come on - if I were to write music containing just pairs of eights,
I would not have complained about the withdrawing of the patch ;-)

Furthermore, a built-in solution is better than a half-brewn python script
parsing my lilypond data (which I even did not write yet).

Regards,

Marc