2017-03-24 22:25 GMT+01:00 Thomas Morley <[email protected]>:
>
>
> 2017-03-24 2:13 GMT+01:00 Andrew Bernard <[email protected]>:
>
>> Hi All,
>>
>>
>>
>> I have an unusual beaming situation in the piano work I am setting. The
>> composer I work with is fussy (very) about his visual gestures in notation
>> and it is incumbent on me to reproduce the beaming seen in the attached
>> image. The issue I am having difficulty with is where the beam for the
>> spanned group goes from up to down with no break – at the point where the
>> “treble^8” clef is introduced. Are there any smart solutions to such a
>> situation?
>>
>>
>>
>> I can ask to have this notated differently, but it would go against
>> various large scale structural patterns in the music. [Yes, we know it does
>> not follow engraving rules 😊] So a technical lilypond solution would
>> be great.
>>
>>
>>
>> Andrew
>>
>
>
> Sorry to say, I usually throw away scores where the composer obfuscates
> things.
>
Anyway, here my attempt, some heavy ugliness in it, though, (see comments
inline)
\version "2.19.57"
stemBeams =
#(define-music-function (l1 l2)(list? list?)
#{
\once \override Stem.beaming = #(cons l1 l2)
#})
\layout {
\override NoteHead.stem-attachment = #'(0 . 0)
\context {
\Score
proportionalNotationDuration = #(ly:make-moment 1/24)
\override SpacingSpanner.uniform-stretching = ##t
}
}
\new PianoStaff <<
\new Staff = "up"
\with { \override VerticalAxisGroup.staff-staff-spacing.padding = 4 }
{
\cadenzaOn
\stemUp
\once \override Beam.positions = #'(8 . 8)
b''!16[
\stemBeams #'(0) #'(0 1)
\times 4/5 { dis'' cis' dis'' b'! \stemBeams #'(0 1) #'(0) f''! }
\stemBeams #'(0) #'(0 1)
\times 4/5 { d' f''! bes' f''! \stemBeams #'(0 1) #'(0) gis' }
\stemBeams #'(0) #'(0 1)
b'!
\stemBeams #'(0 1) #'(0)
g''!
\change Staff = "down"
dis''!16]
%% This one is really ugly, because the values are hardcoded
%% Every slight change in layout will cause a new round of try-and-error
:(
%% Currently I see no convincing method to automate it.
\once \override Beam.after-line-breaking =
#(lambda (grob)
;; the (commented) line below prints the list to terminal
;; c/p this list and change the values until they fit your needs
;(pretty-print (ly:grob-property grob 'beam-segments))
(ly:grob-set-property! grob 'beam-segments
'(((vertical-count . 0)
(horizontal 55.65 . 85.5911087716535))
((vertical-count . 1)
(horizontal 55.65 . 74.7368967716535))
((vertical-count . 1)
(horizontal 76.9068967716535 . 78.8368967716535))
((vertical-count . 1)
(horizontal 80.5068967716535 . 85.5911087716535))
((vertical-count . 2)
(horizontal 55.65 . 58.3142607716535))
((vertical-count . 2)
(horizontal 61.1842607716535 . 62.34926077165349))
((vertical-count . 2)
(horizontal 73.5718967716535 . 74.7368967716535))
((vertical-count . 2)
(horizontal 76.9068967716535 . 78.8368967716535))
((vertical-count . 2)
(horizontal 80.5068967716535 . 82.4368967716535))))
)
\once \override Beam.positions = #'(-5 . -5)
\once \override Score.NoteColumn. X-offset = -1.2
\stemBeams #'(0 1 2) #'(0 1)
\change Staff = "up"
\stemDown
fis'''!32[
\change Staff = "down"
\stemUp
%% Remark
%% I don't understand those strange values for Stem.beaming following
below
%% and the need to set them in first place at all
%% Causing the need to correct some with the override for 'beam-segments
above
\stemBeams #'(0 1) #'(-1 0 1)
gis''!32
\change Staff = "up"
\stemDown
\stemBeams #'(-1 0 1) #'(-1 0 )
a'''!16 cis'''! cis'''!
\stemBeams #'(0 1 2) #'(0)
a'''!32
\change Staff = "down"
\stemUp
\stemBeams #'(0) #'(-2 -1 0)
dis'''!32
\change Staff = "up"
\stemDown
\stemBeams #'(-1 0 1) #'(-1)
g'''!
\change Staff = "down"
\stemUp
\stemBeams #'(0) #'(-2 -1 0)
cis''' !
\change Staff = "up"
\stemDown
bes'''! fis'''!16]
}
\new Staff = "down" {
s2 s4 s32
\times 4/5 { gis''16[ dis''! gis''! ais'' b''!] }
dis'''!
s8
}
>>
Cheers,
Harm
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