Re: Lilypond

[Aditya Mahajan <adityam@umich.edu>]

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On Fri, 19 Aug 2011, Henning Hraban Ramm wrote:

> Am 2011-08-19 um 17:08 schrieb Aditya Mahajan:
>
> But - can you even support different setups, say
>
> \startlilypondpreamble
> global settings for everything
> \stoplilypondpreamble
>
> \startlilypondpreamble[snippet]
> global settings for snippets
> \stoplilypondpreamble
>
> \startlilypondpreamble[fullscore]
> global settings for full scores
> \stoplilypondpreamble
>
> \startlilypond[setup=fullscore]
> the score
> \stoplilypond
>
> etc.

Yes. I can support the following syntax:

\startbuffer[snippets] ... \stopbuffer

\startbuffer[fullscore] ... \stopbuffer

\startbuffer[common] ... \stopbuffer

\startlilypond[bufferbefore={snippets,common}, bufferafter={....}]
.... 
\stoplilypond

(In fact, provide similar support for anything defined using the filter 
module).

>> The other thing is to be able to change linespace, papersize, offset, etc 
>> using parameters, so that one can say:
>> \startlilypond[linespace=...]
>> ...
>> \stoplilypond
>> This will require some lua side processing.
>
> You mean, translate ConTeXt-style settings to LilyPond settings, like we did 
> with the old module?

Yes.

> That wouldn’t make much sense. LilyPond just has too much settings. And most 
> of them you can set in different ways. To fully support this, you’d need a 
> complete LilyPond parser including Scheme. And a small set of settings is 
> never the right set for everyone.

OK.

> Ok, there are a few settings that we could translate, e.g. set ConTeXt’s main 
> fonts also for LilyPond.

Agreed. Does anyone know how to get the name of the current font in MkIV?

> We don’t need LilyPond's layout settings, as long as we go the 
> \externalfigure path.

But I think that at least automatic paper size settings (set paper 
size to be equal to text area) are needed.

> I don’t know a solution for line breaking of scores - if you’d set LilyPond’s 
> page size to ConTeXt’s remaining space, it would stay the same for the second 
> page. Perhaps we can get single lines (systems) and let ConTeXt to the page 
> breaking. I’ll look into that.

OK.

> But I don’t know how we can make it "right" WRT LilyPond snippets - I’d want 
> to align a note systems’s base line with ConTeXt’s text baseline, but the 
> height and clipping of a snippet depends on the visible elements. Without 
> some picture analysis (or runtime data from LilyPond, that doesn’t exist 
> AFAIK) you need to adjust your snippets manually.

Does lilypond-book handle this at all? It does not appear to. Manually 
adjusting each inline snippet will be too much work, IMO.

>> Do you know how lilypond numbers its output files. In some cases I get 
>> filename-1.pdf sometimes not. Can I force it to always give filename-1.pdf 
>> or always give filename.pdf
>
> LilyPond adds a number to EPS, if there’s more that one page.
> But in my songbook setup, I always get a filename-temp-lilypond-##.eps plus 
> an identical filename-temp-lilypond-##-1.eps
>
> When you order more than one \midi{} in several \score blocks, the first MIDI 
> file is unnumbered, the second gets number 1 etc.; didn’t try with different 
> \layout blocks yet.
>
> Seems like I must do some tests with multipage scores.

Look at the current version on github. It should be able to handle 
multi-page snippets.

Aditya

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