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Re: complex-beam


From: Carl Sorensen
Subject: Re: complex-beam
Date: Mon, 27 Feb 2012 00:02:14 +0000
User-agent: Microsoft-MacOutlook/14.10.0.110310

On 2/26/12 2:10 AM, "David Bobroff" <address@hidden> wrote:

>I'm looking for a way to achieve this beaming pattern:
>
>http://notendur.centrum.is/~bobroff/lily/complex-beam.png
>
>Can LilyPond do this?  I suspect I'll have to use a combination of
>subdivideBeams and stemRightBeamCount/stemLeftBeamCount.  Is there a
>known solution?
>
>Thanks,
>
>David
>
>
>

Lilypond does not currently do "second-level" beam subdivisions.

Please add this as a feature request.  I have been looking for a good
example of what it means to have multiple subdivision.

I believe this can be achieved; I will try to get to it in the next couple
of weeks.

I believe this beaming could be expressed as something like:

(subdivide . ((1 . 8) . (1 1 1))
             ((1 . 16) . (1 1 1 1 1 1)))

although I am not proposing this as the syntax.

It might be better to change subdivideBeams from a boolean to a list,
where each element of the list would be a beat length at which to
subdivide.  If that were the case we would achieve the beaming in the
sample by

\set subdivideBeams = #'((1 . 8) (1 . 16))

Or perhaps

\set subdivideBeams = #'((ly:make-moment 1 8)
                         (ly:make-moment 1 16))

Or perhaps even (with David K's new syntax, where we can have duration
elements)

\set subdivideBeams = #'( 8 16 )

I'll put this in the hopper and think about it.

Thanks,

Carl




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