Am 11.09.2012 20:48, schrieb m...@mikesolomon.org:
On 11 sept. 2012, at 17:48, Marc Hohl <m...@hohlart.de> wrote:
Hello list,
for my work on the volta bracket inclusion for the new bar line interface,
I need to know how the bars are ordered in (ly:grob-object grob 'bars).
Please see the attached file.
For the \musOne, I get a grob array with eight BarLine grobs
(two for each staff) for the first volta bracket (and one for
the second volta bracket, of course):
|------volta------|
<BarLine> <BarLine>
<BarLine> <BarLine>
<BarLine> <BarLine>
<BarLine> <BarLine>
For \musTwo, I get a grob array consisting of eight BarLine grobs
(because the bracket spans eight bars in a single line) and a second
one for the second volta bracket.
|-------------------------------------volta-----------------------------------|
<BarLine> <BarLine> <BarLine> <BarLine> <BarLine> <BarLine> <BarLine> <BarLine>
Is there any chance to get to know how the grobs are arranged?
Or more formally: how can I get the 2D structure back from a 1D vector?
Thanks in advance,
Marc
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You can use Grob::get_vertical_axis_group_index (you'd have to write a Scheme
binding).
This seems to do the trick, at least I get values from 0 to 3 in the
case of \musOne,
which is very promising!
Thanks for the tip!
Marc
Or sort the list it based on ly:grob::vertical-less? (that binding is
already written).
Cheers,
MS
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