Re: Lilypond

[Henning Hraban Ramm <hraban@fiee.net>]

Am 2011-08-19 um 17:08 schrieb Aditya Mahajan:

>> I don't understand what you're planning,
>
> I am planning to add features so that you can say:
>
> \startlilypondpreamble
>  global settings
> \stoplilypondpreamble

Ah, that's great - at the moment I just import the same settings.ly  
file into every score of a songbook.

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.

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

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

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.

> 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.

> Which OSes do you have access to?

Normally I work on OSX Intel 10.5.8; I've access to Windows 7/64 and  
Ubuntu/Debian machines.


Greetlings from Lake Constance!
Hraban
---
http://www.fiee.net/texnique/
http://wiki.contextgarden.net
https://www.cacert.org (I'm an assurer)

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