slurs with more than 2 control points
Hi list, how complicated would it be to get slurs with more than 2 control points? Slurs with an S shape often have very flat ends and slurs with more than one "direction change" (sometimes used in romantic/impressionistic piano music) aren't possible at all, are they? Malte ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: slurs with more than 2 control points
Malte, On Thursday, November 26, 2015, lilypond-7 [via Lilypond] < ml-node+s1069038n184151...@n5.nabble.com> wrote: > Hi list, > > how complicated would it be to get slurs with more than 2 control > points? With the current code? Nothing automatic, but you could definitely create a function that could take an arbitrary number of control points, but I can see that taking effect as a direct postscript drawing routine. I have done quite a few curve routines for other projects in the past so I know it's possible. Slurs with an S shape often have very flat ends and slurs with > more than one "direction change" (sometimes used in > romantic/impressionistic piano music) aren't possible at all, are they? Current slurs can take the S shape, but only to an extent. By definition, since the slurs are defined as 3rd-order Bézier curves, they mathematically can only have a single inflection point. It would take a higher order curve to change directions more than one time. They aren't mathematically complex, but beyond the scope of the current code infrastructure. In short, are they possible at the moment? No. Are they impossible? No, but it requires some new code. I might consider tackling that in the near future. Best, Abraham -- View this message in context: http://lilypond.1069038.n5.nabble.com/slurs-with-more-than-2-control-points-tp184151p184186.html Sent from the Bugs mailing list archive at Nabble.com. ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: slurs with more than 2 control points
Am 27.11.2015 um 03:14 schrieb tisimst: > Malte, > > On Thursday, November 26, 2015, lilypond-7 [via Lilypond] < > ml-node+s1069038n184151...@n5.nabble.com> wrote: > >> Hi list, >> >> how complicated would it be to get slurs with more than 2 control >> points? > > > With the current code? Nothing automatic, but you could definitely create a > function that could take an arbitrary number of control points, but I > can see that taking effect as a direct postscript drawing routine. I have > done quite a few curve routines for other projects in the past so I know > it's possible. > > Slurs with an S shape often have very flat ends and slurs with >> more than one "direction change" (sometimes used in >> romantic/impressionistic piano music) aren't possible at all, are they? > > > Current slurs can take the S shape, but only to an extent. By definition, > since the slurs are defined as 3rd-order Bézier curves, they mathematically > can only have a single inflection point. It would take a higher order curve > to change directions more than one time. They aren't mathematically > complex, but beyond the scope of the current code infrastructure. > > In short, are they possible at the moment? No. Are they impossible? No, but > it requires some new code. I might consider tackling that in the near > future. That would be a great addition, be it as an includable function or (better) in LilyPond's code base. Urs > > Best, > Abraham > > > > > -- > View this message in context: > http://lilypond.1069038.n5.nabble.com/slurs-with-more-than-2-control-points-tp184151p184186.html > Sent from the Bugs mailing list archive at Nabble.com. > ___ > bug-lilypond mailing list > bug-lilypond@gnu.org > https://lists.gnu.org/mailman/listinfo/bug-lilypond > -- Urs Liska www.openlilylib.org ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
