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Re: Cowell clusters
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From: |
Klaus Blum |
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Subject: |
Re: Cowell clusters |
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Date: |
Fri, 18 Dec 2020 20:50:36 +0100 |
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User-agent: |
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.5.1 |
Ooops,
sorry for that mess in my last post.
This time, I'll copy-past my code straight from Frescobaldi.
Hope it works now...
Cheers,
Klaus
% ------------------------------------------------------------------
\version "2.20.0"
toneClusterDown = #(define-music-function
(note1 note2) (ly:music? ly:music?)
(let*
(
(p1 (ly:music-property note1 'pitch))
(p2 (ly:music-property note2 'pitch))
(y1 (+ (* 7 (ly:pitch-octave p2))
(ly:pitch-notename p2)))
(y2 (+ (* 7 (ly:pitch-octave p1))
(ly:pitch-notename p1)))
(steps
(if (> y1 y2)
(- y1 y2)
(- y2 y1)
)
)
(note-a (if (> y1 y2) note1 note2 ))
(note-b (if (> y1 y2) note2 note1 ))
)
#{
{
\once \voiceTwo
<<
#note-a
\new Voice {
\voiceTwo
\tweak NoteHead.stem-attachment #'(0 . 0.7)
\tweak Stem.length #(- steps 1.4)
\tweak Stem.thickness #2
\tweak Flag.stencil ##f
#note-b
}
>>
}
#})
)
toneClusterUp = #(define-music-function
(note1 note2) (ly:music? ly:music?)
(let*
(
(p1 (ly:music-property note1 'pitch))
(p2 (ly:music-property note2 'pitch))
(y1 (+ (* 7 (ly:pitch-octave p2))
(ly:pitch-notename p2)))
(y2 (+ (* 7 (ly:pitch-octave p1))
(ly:pitch-notename p1)))
(steps
(if (> y1 y2)
(- y1 y2)
(- y2 y1)
)
)
(note-a (if (> y1 y2) note1 note2 ))
(note-b (if (> y1 y2) note2 note1 ))
)
#{
{
\once \voiceOne
<<
#note-b
\new Voice {
\voiceOne
\tweak NoteHead.stem-attachment #'(0 . 0.7)
\tweak Stem.length #(- steps 1.4)
\tweak Stem.thickness #2
\tweak Flag.stencil ##f
#note-a
}
>>
}
#})
)
%% Test:
{
\toneClusterDown f'1 f''
\toneClusterDown f'2 f''
\toneClusterDown g'' g'
\toneClusterDown a' a''
\toneClusterDown b'' b'
\toneClusterDown c''4. a''
\toneClusterDown d''8 g''
\toneClusterDown g'8 c''
\toneClusterDown g'8 c''
\toneClusterDown a cis'''
\toneClusterDown a cis'''
\bar "||"
\toneClusterUp f'1 f''
\toneClusterUp f'2 f''
\toneClusterUp g'' g'
\toneClusterUp a' a''
\toneClusterUp b'' b'
\toneClusterUp c''4. a''
\toneClusterUp d''8 g''
\toneClusterUp g'8 c''
\toneClusterUp g'8 c''
\toneClusterUp a cis'''
\toneClusterUp a cis'''
}
% ------------------------------------------------------------------