Re: 4 hands piano pieces book

[Urs Liska]

Am 9. Mai 2016 20:35:17 MESZ, schrieb Hwaen Ch'uqi <address@hidden>:
>Greetings Alberto,
>
>I have been wwriting A LOT of four-hand music, and I agree in
>principle with most of what I have read in this thread. Even so, I
>thought to chime in with my approach. As has been advised, I create
>two separate book files, one for Secondo and one for Primo. The top of
>each file is headed with the following:
>
>#(define-markup-command (four-hand-page layout props offset) (number?)
>  (let* (
>    (two-hand (chain-assoc-get 'page:page-number-string props))
>(four-hand (number->string (+ offset (* 2 (string->number
>two-hand))))))
>    (interpret-markup layout props four-hand)))
>
>Then, in the \paper block, I include the following for the Secondo
>part:
>
>oddHeaderMarkup = \markup \fill-line {
>  \four-hand-page #0
>  " "
>}
>    evenHeaderMarkup = ##f
>
>Or, for the Primo part:
>
>oddHeaderMarkup = \markup \fill-line {
>  " "
>  \four-hand-page #1
>}
>evenHeaderMarkup = ##f
>
>In this way, each part will begin with the correct page number, and
>the numbering will increase by two automatically.
>
>In my experience, I have found that there can be no "master file" used
>for determining page breaks, due to the lovely but unpredictable way
>that LilyPond lays out pages. So this must still be done by trial and
>error. I do, however, use the Secondo file in the end as a "master"
>for generating a Table of Contents.
>
>Finally, I also use pdftk to produce the full book, but the process
>outlined earlier can be extremely streamlined if you use the "collate"
>feature. You do not need to burst the files into separate pages; pdftk
>will automatically alternate the pages when combining the two files.
>
>I hope this has been helpful.
>
>Hwaen Ch'uqi

This looks very interesting. Maybe we should try to wrap this into the 
page-layout library. I would also like to try triggering the pdftk stuff from 
within LilyPond.

Urs

>
>
>On 5/8/16, David Wright <address@hidden> wrote:
>> On Sun 08 May 2016 at 19:13:37 (+0200), Jacques Menu Muzhic wrote:
>>> Would dynamics parts dedicated to breaks and pageBreaks, stored in
>>> variables, be useful? They might contain only spacer rests and such
>>> breaks, and be used by Piano I and Piano II parts.
>>>
>>> I use this satisfactorily to produce director and musicians parts,
>with
>>> the same breaks in the first drafts to facilitate cross checking of
>the LP
>>> input code.
>>
>> This seems to be the mainstream way of handling breaks and pageBreaks
>> (though I hadn't thought of specifically using a Dynamics context).
>>
>>> One would still have to place things in the right order in the input
>file
>>> to build the left and right pages, of course.
>>
>> I wouldn't try to build the score in display order at all. In fact,
>> if you want to be able to start a new piece halfway down the page, I
>> think you'd get into a real mess.
>>
>> I would typeset the primo and secondo in separate scores, using
>\books
>> to write separate PDF files.
>>
>> I would use breakbefore = ##t to get the titling out of the way on
>> page 1.
>>
>> Consequently, primo would have its first music on page 2. All
>> subsequent page breaks would be written:
>>
>> \pageBreak % skips to the next page...
>> \markup { " " }
>> \pageBreak % ...and that leaves a page blank (except the page
>number).
>>
>> so that a blank page is left for secondo, and every odd page is
>blank.
>> (Probably put this construction in a variable.)
>>
>> Secondo would start with an immediate extra:
>>
>> \pageBreak % skips to the next page...
>> \markup { " " }
>> \pageBreak % ...and that leaves a page blank (except the page
>number).
>>
>> so that its first music is on page 3. Continue as with primo, so
>every
>> even page is blank.
>>
>> If this looks familiar, it's because this is a rehash of
>> http://lists.gnu.org/archive/html/lilypond-user/2016-05/msg00069.html
>>
>> Burst the two PDFs into two directories and delete all the empty
>pages
>> (ie every other file). Move the remaining files from either directory
>> into the other. Concatenate the PDFs exactly as before, except now
>the
>> output file is called interleaved-output.pdf instead of
>> decimated-output.pdf.
>>
>>> [A.N.Other] said:
>>
>>> > The initial problem is getting the page breaks in sync.
>>> > Once you've achieved that (presumably by manually adding page
>breaks)
>>> > you can easily create two separate pdfs and use an external tool
>to
>>> > create the bound volume.
>>
>> Write your page breaks into *one* variable. Where you give this
>variable
>> to \new Dynamics in the \score structures, prefix *only* secondo with
>> an extra copy of the three-liner above. This approach guarantees the
>same
>> pagebreaks for the two players, but pushes secondo forward by one
>page.
>>
>> Cheers,
>> David.
>>
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>
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