Hi,
considering the statement by Gould below and my personal findings,
I would like to see the following change to the ottavation bracket be
added to LilyPond like proposed in this thread:
http://lists.gnu.org/archive/html/lilypond-user/2014-02/msg00321.html
and now updated in this mail.
Could this be added to the issues as a wish or enhancement (it is even a
bit ugly).
Cheers,
Joram
Here is my wish including examples:
>> What does E. Gould say ...
>
> Page 28:
>> The octave sign is written in italic, the numeral '8' is 1 1/2
>> stave-paces high. The optional 'va' is placed flush with the top of
>> _ottava sopra_ (_8^va_), flush with the base of _ottava bassa_ (_8va_).
>>
>> Indicate the extent of the transposition with a line of dashes
>> (hereafter called a dotted line). The line extends from the top edge
>> of the _8_ for _8 sopra_ and the base of the _8_ for _8 bassa_, and
>> runs parallel to the stave.
>
> And those 8s look bold to me.
>
> Brian Barker
This has something in common with the current situation, but these
points are different:
- there should be super/subscript for va etc.
- it should be bold
- the lines should be at the top edge/base and not in the middle
Here is my incomplete suggestion with some comments:
Text positioning:
- \super does not look good
- \raise depends on the staff size (not on the font size)
- therefore \translate-scaled
- the value is a compromise for 8 and 15 which look slightly different
- should we add text for a third octave to LP? ±3 (i.e. 22va and 22vb)
(this is easy in scm/define-music-callbacks.scm)
or a general text calculated from the octavation:
|octavation|*7 + 1 and va if octavation > 0, vb if octavation < 0
Lines
- The lines are unchanged but they should go to the top line or base
line respectively.
- The right edge would look better if it was a solid vertical line
(without a dash gap)
- I have seen more dotted than dashed lines, but that’s debatable.
This snippet shows what I propose as default. If accepted, the markups
would have to be translated to scheme:
\version "2.18.0"
ottavaaI = { % this is an alternative proposal to all the rest
\ottava 1
\set Staff.ottavation = \markup \concat {
\bold "8" \fontsize #-2 \translate-scaled #'(0 . 0.85) "va"
}
}
ottavaa = {
\ottava 1
\set Staff.ottavation = \markup \concat {
\bold "8" \fontsize #-2 \translate-scaled #'(0 . 0.85) "va"
}
}
ottavab = {
\ottava -1
\set Staff.ottavation = \markup \bold \concat{
"8" \fontsize #-2 "vb" }
}
ottavac = {
\ottava 2
\set Staff.ottavation = \markup \bold \concat{
"15" \fontsize #-2 \translate-scaled #'(0 . 0.85) "ma"
}
}
ottavad = {
\ottava -2
\set Staff.ottavation = \markup \bold \concat{
"15" \fontsize #-2 "mb" }
}
ottavae = {
\ottava 3
\set Staff.ottavation = \markup \bold \concat {
"22" \tiny \translate-scaled #'(0 . 0.85) "ma"
}
}
ottavaf = {
\ottava -3
\set Staff.ottavation = \markup \bold \concat {
"22"\fontsize #-2 "mb"
}
}
<<
\new Staff \relative c''' {
\ottava #1 a a
\ottava #-1 a,, a
\ottava #2 a''' a
\ottava #-2 a,,,, a
\ottava #3 a''''' a
\ottava #-3 a,,,,,, a
\ottava #0
}
\new Staff \relative c''' {
\ottavaa a a
\ottavab a,, a
\ottavac a''' a
\ottavad a,,,, a
\ottavae a''''' a
\ottavaf a,,,,,, a
\ottavaaI a'''' a
}
>>
This function might also be helpful, but is perhaps overkill:
#(define-markup-command (topalign layout props arg)
(markup?)
(let* ((mol (interpret-markup layout props arg)))
(ly:stencil-aligned-to mol Y 1)))
\markup \huge \bold \italic \concat {AB \topalign 8 \topalign \tiny va}
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