Hi Gordon,
Welcome. If you are interested in an online music application, have you
looked here yet? -->
http://weblily.net/web/guest;jsessionid=CF320C2C6F66038EA5B98FAC59F34B28
For starters / ideas:
LilyPond-driven applications, etc.
Ben
Gordon Rouse wrote
> Being interested in writing music and web-development,
> I am interested in making an online
> music editing system that would maybe be half as good as Sibelius!
>
> The idea would be to use the lilypond with SVG backend.
> I have had a look at the SVG output from lilypond and
> I am impressed with the work.
> To make the SVG able to be manipulated with a
> javascript library like jQuery I would need a manner to identify the
> elements in the SVG to
> add functionality to clicking and dragging the elements.
> While I could work with the curent
> output, it would be better
> if the elements could have some identifiers in them - like classes
> and ids, that would allow easier manipulation.
>
> Here is an example of the current note element:
> transform="translate(35.6618, 7.0119) scale(0.0040, -0.0040)"
> d="M220 138c56 0 109 -29
> 109 -91c0 -72 -56 -121 -103
> -149c-36 -21 -76 -36 -117
> -36c-56 0 -109 29 -109 91c0 72 56 121
> 103 149c36 21 76 36 117 36z"
> fill="currentColor"/>
> I might be able to figure out it is a note by the numbers,
> and its position might tell me
> something about what note it is.
>
> However, if we added some extra information
> to the element like a class tag, we could have
> some useful information that would make
> the SVG output easily manipulated by javascript.
> id="el-X"
> class="note g4 bar-32 beat-2.5
> {group-X} {triplet|duplet|etc} {grouplength-2}
> {groupindex-2}"
> transform="translate(35.6618, 7.0119)
> scale(0.0040, -0.0040)"
> d="M220 138c56
> 0 109 -29 109 -91c0 -72 -56 -121 -103
> -149c-36 -21 -76 -36 -117 -36c-56 0 -109 29 -109 91c0
> 72 56 121 103 149c36 21 76 36 117 36z"
> fill="currentColor"/>
> The element should have a unique id which allows it's identification
>
> Then I envisage that the first class item tells me it is a note, rest stem
> etc, the second
> tells what note (not exactly as notated in ly file as these characters
> need
> to be www3
> compliant), the third item gives me bar number, fourth the beat position,
> the fifth links it
> to other elements - ie stem and quaver groupings, with the X being a
> unique
> generated index
> for subsequent groups. The sixth item would tell me if it was part of
> special triplet or
> duplet etc over grouplength parameter and is the nth item as given in
> groupindex.
>
> The layout of such information needs to be easy for jQuery or other
> javascript libraries to
> find related items. In the above example,
> if I was trying to find all elements in bar 32, I
> could use jQuery notation $('.bar-32').
> Hence why I want the separation of bits of
> information into useful groupings. Naturally,
> once I found an item, I can lookup its other
> properties.
>
> These are just ideas.
> Obviously this extra information adds more size to the SVG output, so
> it would not be part of any default SVG output.
> Maybe if someone could point out the files where
> the SVG syntax is generated I could have a
> look at implementing this myself.
>
> Regards
>
> Gordon Rouse
> Web-Programmer/Developer
>
>
>
>
>
>
>
>
> ___
> lilypond-devel mailing list
> lilypond-devel@
> https://lists.gnu.org/mailman/listinfo/lilypond-devel
-
composer | sound designer
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http://lilypond.1069038.n5.nabble.com/making-SVG-output-ready-for-web-GUIs-tp151249p151250.html
Sent from the Dev mailing list archive at Nabble.com.
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