Thank you for the detailed explanation.
вт, 5 февр. 2019 г. в 13:31, Urs Liska <li...@openlilylib.org>:
>
> Am 04.02.19 um 20:53 schrieb Павел Буданов:
>
> Hello everybody! You can see on the next image, that autobeaming is not
> always correct:
>
> For the sake of experiment, I tried to put this snippet to separate file:
> \scaleDurations 2/3 \relative f,
> {
> \clef bass
> \set subdivideBeams = ##t
> \set baseMoment = #(ly:make-moment 3/16)
> \tuplet 6/6 { b,8 f'16 d' f, d' }
> b' d, f, d' f, b,~
> \repeat unfold 2
> { b8 f'16 d' f, d' b' d, f, d' f, b,~ }
> }
> And got a different result:
>
> What is the root of this problem?
>
>
> The "root" of the problem is that the code is completely messed up in the
> first place. You don't want to use \scaleDurations here at all, only
> \tuplet, and then "\tuplet 6/6" doesn't make sense at all.
>
> Here's a commented example of what I assume you want to do:
>
> \version "2.21.0"
>
> % No \scaleDurations
> \relative f,
> {
> \clef bass
> \set subdivideBeams = ##t
> % Set the base moment to 1/8 (equals 3/16 in a 3/2 tuplet)
> \set baseMoment = #(ly:make-moment 1/8)
> % You want a 6/4 tuplet ("6 instead of 4", "6 instead of 6" doesn't mean
> anything)
> % supply the "4" to group tuplets in quarter notes
> % wrap the \tuplet around the *whole* music (INSTEAD of using
> \scaleDurations)
> \tuplet 6/4 4 {
> b,8 f'16 d' f, d'
> % Probably with the 6/6 tuplet around one single group
> % you meant to disable the tuplet number after the first incident.
> \omit TupletNumber
> b' d, f, d' f, b,~
> \repeat unfold 2
> { b8 f'16 d' f, d' b' d, f, d' f, b,~ }
> }
> }
>
> When it comes to tuplets the automatic beam subdivisions still fail in
> many cases (see
> http://lilypond.org/google-summer-of-code.html#Fix-Beaming-Patterns_002fBeam-Subdivisions-and-Tuplets),
> but this example works quite well.
>
> HTH
> Urs
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