Re: Embedding LilyPond in iOS app?

[Urs Liska]

Am 21.05.2016 um 16:43 schrieb Paul:
> On 05/21/2016 12:21 AM, Urs Liska wrote:
>> I suggest you have a look at the Verovio library
>> (http://verovio.org), which is a tool intended for high-speed
>> flexible in-browser (for example JavaScript) rendering of music.
> You might also consider VexFlow which is written in Javascript:
> http://www.vexflow.com/
>
> Looks like Verovio is written in C++ and then can be compiled to
> JavaScript or Python.

Yes, it is written in C++, without dependencies and has been compiled to
a number of platforms. The one most commonly in use is JavaScript
(compiled to that through Emscripten).

I have seen a presentation/tutorial workshop this week, and I must
really say that is an incredible piece of software. It is able to do
near-instantaneous engraving *in* the browser, with rescaling,
reselecting and everything, at an enormous speed.

It has a completely different target than LilyPond, though, and will
probably never reach anything near publishing quality engraving.
Therefore the current trend in digital music edition is to pursue a
two-way path for user interfaces: use Verovio for everything in content
editing and (flexible) end-user visualization, and (hope for being able
to) use LilyPond for print-quality engraving of selected readings.

One extremely interesting kind of approach that is made possible through
Verovio is having score documents (in MEI format) retrieved through a
URI and render them in-place. There are also tools/specs available to
address specific parts of a score through a URL and have only that
engraved. Another thing I saw is that the displaying website can
retrieve exceprts from that remote document using XSLT or XPath queries
and have that rendered instantaneously.

I think for any application where
- SVG is a suitable option
- isntant re-engraving is an issue (mobile platforms for example)
- publication quality isn't the target
Verovio is definitely something to look into.

Urs

>
> -Paul
>
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