Re: how to simulate or vectorize free hand curve notation

[Thomas Morley]

2015-11-17 1:40 GMT+01:00 Andrew Bernard <address@hidden>:
> Hi Ryan,
>
> I feared as much. I assume you are talking about the curve in the extract
> from your sample, attached for reference.
>
> Lilypond slurs are Bezier curves that have two control points. That means
> you can’t create arbitrary wavy curves like that with that object – you need
> a large number of control points for that. (As an aside, if you do want to
> shape slurs there is an even nicer function that \shape called \shapeII in
> the openlilylib library.)
>
> So what are the alternatives? Take a look at the NR section on graphics in
> markup.
>
> http://lilypond.org/doc/v2.18/Documentation/notation/graphic
>
> You could use the path command, which will allow an arbitrarily long list of
> curveto commands – consequently as many control points as you want. Since
> lilypond is not a graphical drawing tool, this approach, for the curves you
> show, would take a very large amount of effort, compiling and adjusting.
>
> You can also use Postscript directly in markup, and you could write
> Postscript path commands. This has similar drawbacks to the above, but you
> can use Ghostscript as a development environment to see the curve. Again,
> painstakingly difficult. Also, if you incorporate Postscript into your
> lilypond file, it will not come out if you need to render the output in SVG.
>
> The least nice way is to export to SVG and then create your curve in the
> document in Inkscape, or other SVG editor. This is a last resort, because
> once you go out to Inkscape you can’t come back again into lilypond.
>
> Lilypond graphics markup allows the inclusion of EPS (encapsulated
> Postscript). So you could draw the curve in Adobe Illustrator, export as
> EPS, and include as an EPS file in lilypond.
>
> I engrave vastly complex New Complexity School scores by a composer
> colleague of mine. The modernist notation challenges lilypond at every turn
> and every measure, so I am used to these issues! In the end, often, I feel
> defeated by the composer who has nothing more than an HB pencil!
>
> Andrew
>
>
>
> On 17/11/2015, 08:37, "Ryan Michael" <address@hidden> wrote:
>
> The curves, say, on the second treble staff, in the image.
>
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There's
https://codereview.appspot.com/270640043/
Once it's finished it may help for tasks like this.
`make-bow-stencil' allows for some nice features. Just have to find
the time to finish it...

 Cheers,
  Harm