Re: Feature request: Display bezier control-points
Hi Urs, > There are two more issues with this: > - I don't see how to get it working with ties. Which would be nice of course works with Ties now. Can't do more for now. I have to go to my regular job. :( \version "2.14.2" #(define (make-cross-stencil coords) (ly:stencil-add (make-line-stencil 0.1 (- (car coords) 0.2) (- (cdr coords) 0.2) (+ (car coords) 0.2) (+ (cdr coords) 0.2)) (make-line-stencil 0.1 (- (car coords) 0.2) (+ (cdr coords) 0.2) (+ (car coords) 0.2) (- (cdr coords) 0.2 #(define (display-control-points line) (lambda (grob) (let* ((grob-name (lambda (x) (assq-ref (ly:grob-property x 'meta) 'name))) (name (grob-name grob)) (stil (cond ((or (eq? name 'Slur)(eq? name 'PhrasingSlur))(ly:slur::print grob)) ((eq? name 'Tie)(ly:tie::print grob (cps (ly:grob-property grob 'control-points))) (ly:stencil-add stil (ly:stencil-in-color (ly:stencil-add ;(make-cross-stencil (first cps)) (make-cross-stencil (second cps)) (make-cross-stencil (third cps)) ;(make-cross-stencil (fourth cps)) ) 1 0 0) (if (eq? line #t) (begin (ly:stencil-add (make-line-stencil 0.05 (car (first cps)) (cdr (first cps)) (car (second cps)) (cdr (second cps))) ;(make-line-stencil 0.05 (car (second cps)) (cdr (second cps)) (car (third cps)) (cdr (third cps))) (make-line-stencil 0.05 (car (third cps)) (cdr (third cps)) (car (fourth cps)) (cdr (fourth cps))) )) empty-stencil) ) ))) \relative c'' { \override Slur #'stencil = #(display-control-points #t) c2( d e f) \override PhrasingSlur #'stencil = #(display-control-points #t) c2\( d e f\) \override Tie #'stencil = #(display-control-points #t) e2~ e } -Harm ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: Feature request: Display bezier control-points
Am 04.05.2012 04:12, schrieb David Nalesnik: Hi Urs, But this really _is_ helping to find suitable values for the control-points. I'm very glad to hear this! * Although I know bezier curves from vector graphics software, I also was convinced that the 'control-points' were four points on the curve that define its shape. Initially I did too... * In fact the first and last are such points, whereas the middle two 'control-points' are the 'handles'. -> Is this explained somewhere? * From seeing the crosses I now realize that (when using your function) all four offsets are relative to LilyPond's original decision. Well, if you think about it, that's quite obvious, but I always assumed that if I change one offset the other control-points would be affected accordingly. But in fact they aren't. So if I for example raise the endpoint of a slur, the third control-point may well get below the slur. This makes me understand the seemingly strange behaviour of the slurs when fiddling with the offsets. * -> Probably it'll greatly improve my 'tweaking experience', even if I have seen this only once, not to speak if I manage to include this in a real-life workflow ... So, many thanks once more, David! You're very welcome! I've been playing around with it a bit myself, and I'm becoming more and more convinced that something like this would be a very useful feature. You can also use it to show you the effect of changing other properties. For example, you can see the effects of overriding 'height-limit and 'eccentricity. I'm finding it very instructive. At least one thing, which I did do right now: I compiled one score with and without your cross setting, and comparing the two pdfs with Alt-Tab showed that the layout was perfectly identical - except for the additional crosses. So obviously the crosses are added after LilyPond decides about the layout. I'm very glad to hear this! My worry was that the crosses might push staves further apart in extreme situations. Now I checked this and was glad to see that the crosses/lines happily print over adjacent staves without influencing them at all. Which is another point for using it together with the lines. I think your shapeXXX functions together with this option make a _very_ useful toolset for working with curves. I will gladly try to package this in some way and do anything to help making it accessible (if not directly within the LilyPond site then maybe through a tutorial) Best Urs Best Urs Thanks for trying this out! -David ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: Feature request: Display bezier control-points
Am 04.05.2012 03:09, schrieb Thomas Morley: Hi Urs, I would be very happy about one or two more features (that I unfortunately can't implement myself: - highlight (and separate from the music) the crosses through a color - possibly adding a connecting (very thin) line, making it even more intuitive Best Urs how about: \version "2.14.2" #(define (make-cross-stencil coords) (ly:stencil-add (make-line-stencil 0.1 (- (car coords) 0.2) (- (cdr coords) 0.2) (+ (car coords) 0.2) (+ (cdr coords) 0.2)) (make-line-stencil 0.1 (- (car coords) 0.2) (+ (cdr coords) 0.2) (+ (car coords) 0.2) (- (cdr coords) 0.2 #(define (display-control-points line) (lambda (grob) (let ((stencil (ly:slur::print grob)) (cps (ly:grob-property grob 'control-points))) (ly:stencil-add stencil (ly:stencil-in-color (make-cross-stencil (second cps)) 1 0 0) (ly:stencil-in-color (make-cross-stencil (third cps)) 1 0 0) (if (eq? line #t) (make-line-stencil 0.05 (car (second cps)) (cdr (second cps)) (car (third cps)) (cdr (third cps))) empty-stencil) ) ))) \relative c'' { \override Slur #'stencil = #(display-control-points #t) c2( d e f) } HTH, Harm Hi Harm, thanks for this. What I had in mind was to draw lines from control-points 1-2 and 3-4 (as in drawing programs). Your solution is equally intuitive, but I have the impression that 'my' lines are generally smaller and therefore less intrusive, especially with longer curves. See the attached updated file. In it you can see also: - it equally works with broken slurs - the lines are important: Take the control-point 2 of the slur in m. 2. It is already hard to tell if this belongs to the first or the second line - an ambiguity that isn't present in the second version with the lines. There are two more issues with this: - I don't see how to get it working with ties. Which would be nice of course - It would be nice to be able to pass the color as a (optional) list of values. So one could store the main function in a library file and define the appearance in a 'user space' wrapper function (like in the attached file). And it would make it possible to differentiate colors for slurs, phrasingSlurs and Ties. If we could continue to get a set of working tools (together with David's shapeXXX functions), I'd try hard to find the time to document it in some kind of tutorial (although currently I have to finish the 'real-life' project I need all this for ...) Best Urs \version "2.14.2" #(define (make-cross-stencil coords) (ly:stencil-add (make-line-stencil 0.15 (- (car coords) 0.2) (- (cdr coords) 0.2) (+ (car coords) 0.2) (+ (cdr coords) 0.2)) (make-line-stencil 0.15 (- (car coords) 0.2) (+ (cdr coords) 0.2) (+ (car coords) 0.2) (- (cdr coords) 0.2 #(define (display-control-points line) (lambda (grob) (let ((stencil (ly:slur::print grob)) (cps (ly:grob-property grob 'control-points))) (ly:stencil-add stencil (ly:stencil-in-color (make-cross-stencil (second cps)) 0 0 1) (ly:stencil-in-color (make-cross-stencil (third cps)) 0 0 1) (if (eq? line #t) (make-line-stencil 0.05 (car (first cps)) (cdr (first cps)) (car (second cps)) (cdr (second cps))) empty-stencil) (if (eq? line #t) (make-line-stencil 0.05 (car (third cps)) (cdr (third cps)) (car (fourth cps)) (cdr (fourth cps))) empty-stencil) ) ))) displayControlPoints = { \override Slur #'stencil = #(display-control-points #f) \override PhrasingSlur #'stencil = #(display-control-points #f) %\override Tie #'stencil = #(display-control-points #f) % commenting this out gives an error } displayControlPointsWithLines = { \override Slur #'stencil = #(display-control-points #t) \override PhrasingSlur #'stencil = #(display-control-points #t) %\override Tie #'stencil = #(display-control-points #t) % commenting this out gives an error } hideControlPoints = { \revert Slur #'stencil \revert PhrasingSlur #'stencil } \paper { indent = 0 } music = \relative c'' { \slurDown c2\( d e d( c d~ d f) \break g e c d c1\) } \markup "Show control-points" \score { { \displayControlPoints \music } } \markup "Show control-points and 'handle' lines" \score { { \displayControlPointsWithLines \music } } \markup "Plain curves" \score { { \music } }___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: Feature request: Display bezier control-points
Am 04.05.2012 08:09, schrieb James: Hello, On 4 May 2012 01:31, Urs Liska wrote: Am 04.05.2012 02:08, schrieb David Nalesnik: Hi Urs, > It would be a really valuable feature if one could let LilyPond display > the control-points of a bezier curve. > I would imagine something like a cross or a point at the middle two > control-points. I think this would be very helpful, so that you can visualize exactly what these control-points are that you're setting. (It must be a common misconception that they are points on the actual curve.) I'm not sure what impact this may have on the layout, but you could do something like the following: \version "2.15.37" #(define (make-cross-stencil coords) (ly:stencil-add (make-line-stencil 0.1 (- (car coords) 0.2) (- (cdr coords) 0.2) (+ (car coords) 0.2) (+ (cdr coords) 0.2)) (make-line-stencil 0.1 (- (car coords) 0.2) (+ (cdr coords) 0.2) (+ (car coords) 0.2) (- (cdr coords) 0.2 #(define display-control-points (lambda (grob) (let ((stencil (ly:slur::print grob)) (cps (ly:grob-property grob 'control-points))) (ly:stencil-add stencil (make-cross-stencil (second cps)) (make-cross-stencil (third cps)) \relative c'' { \override Slur #'stencil = #display-control-points c( d e f) } Hope you find this helpful! Wow, extremely! Of course I would prefer to have this built-in. And as you I can't really judge if this has side effects. But this really _is_ helping to find suitable values for the control-points. * Although I know bezier curves from vector graphics software, I also was convinced that the 'control-points' were four points on the curve that define its shape. * In fact the first and last are such points, whereas the middle two 'control-points' are the 'handles'. -> Is this explained somewhere? http://lilypond.org/doc/v2.14/Documentation/notation-big-page.html#modifying-ties-and-slurs OK, that's a thorough explanation ... I must have read this - but probably I didn't understand it then and therefore forgot it more effectively than if I hadn't seen it at all ;-) Best Urs ? James ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: Feature request: Display bezier control-points
Hello, On 4 May 2012 01:31, Urs Liska wrote: > Am 04.05.2012 02:08, schrieb David Nalesnik: > >> Hi Urs, >> >> > It would be a really valuable feature if one could let LilyPond >> display >> > the control-points of a bezier curve. >> > I would imagine something like a cross or a point at the middle two >> > control-points. >> >> >> I think this would be very helpful, so that you can visualize exactly what >> these control-points are that you're setting. (It must be a common >> misconception that they are points on the actual curve.) >> >> I'm not sure what impact this may have on the layout, but you could do >> something like the following: >> >> \version "2.15.37" >> >> #(define (make-cross-stencil coords) >> (ly:stencil-add >> (make-line-stencil 0.1 (- (car coords) 0.2) (- (cdr coords) 0.2) >> (+ (car coords) 0.2) (+ (cdr coords) 0.2)) >> (make-line-stencil 0.1 (- (car coords) 0.2) (+ (cdr coords) 0.2) >> (+ (car coords) 0.2) (- (cdr coords) 0.2 >> >> #(define display-control-points >> (lambda (grob) >> (let ((stencil (ly:slur::print grob)) >> (cps (ly:grob-property grob 'control-points))) >> (ly:stencil-add stencil >> (make-cross-stencil (second cps)) >> (make-cross-stencil (third cps)) >> \relative c'' { >> \override Slur #'stencil = #display-control-points >> c( d e f) >> } >> >> Hope you find this helpful! > > Wow, extremely! > Of course I would prefer to have this built-in. > And as you I can't really judge if this has side effects. > But this really _is_ helping to find suitable values for the control-points. > > * Although I know bezier curves from vector graphics software, I also > was convinced that the 'control-points' were four points on the > curve that define its shape. > * In fact the first and last are such points, whereas the middle two > 'control-points' are the 'handles'. > -> Is this explained somewhere? http://lilypond.org/doc/v2.14/Documentation/notation-big-page.html#modifying-ties-and-slurs ? James ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: Feature request: Display bezier control-points
Hi Harm, > how about: > > \version "2.14.2" > > #(define (make-cross-stencil coords) > (ly:stencil-add > (make-line-stencil 0.1 (- (car coords) 0.2) (- (cdr coords) 0.2) > (+ (car coords) 0.2) (+ (cdr coords) 0.2)) > (make-line-stencil 0.1 (- (car coords) 0.2) (+ (cdr coords) 0.2) > (+ (car coords) 0.2) (- (cdr coords) 0.2 > > #(define (display-control-points line) > (lambda (grob) > (let ((stencil (ly:slur::print grob)) > (cps (ly:grob-property grob 'control-points))) > > (ly:stencil-add stencil > (ly:stencil-in-color > (make-cross-stencil (second cps)) > 1 0 0) > (ly:stencil-in-color > (make-cross-stencil (third cps)) > 1 0 0) > (if (eq? line #t) > (make-line-stencil 0.05 (car (second cps)) (cdr (second cps)) > (car (third cps)) (cdr (third cps))) > empty-stencil) > ) > ))) > > \relative c'' { > \override Slur #'stencil = #(display-control-points #t) > c2( d e f) > } > Looks great! Makes this even more fun to play around with :) -David ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: Feature request: Display bezier control-points
Hi Urs, >> But this really _is_ helping to find suitable values for the >> control-points. >> > I'm very glad to hear this! > >> * Although I know bezier curves from vector graphics software, I >>also was convinced that the 'control-points' were four points on >>the curve that define its shape. >> > Initially I did too... > * In fact the first and last are such points, whereas the middle two >>'control-points' are the 'handles'. >>-> Is this explained somewhere? >> * From seeing the crosses I now realize that (when using your >>function) all four offsets are relative to LilyPond's original >>decision. >>Well, if you think about it, that's quite obvious, but I always >>assumed that if I change one offset the other control-points would >>be affected accordingly. >>But in fact they aren't. So if I for example raise the endpoint of >>a slur, the third control-point may well get below the slur. >>This makes me understand the seemingly strange behaviour of the >>slurs when fiddling with the offsets. > > * -> Probably it'll greatly improve my 'tweaking experience', even >>if I have seen this only once, not to speak if I manage to include >>this in a real-life workflow ... >>So, many thanks once more, David! >> > You're very welcome! I've been playing around with it a bit myself, and I'm becoming more and more convinced that something like this would be a very useful feature. You can also use it to show you the effect of changing other properties. For example, you can see the effects of overriding 'height-limit and 'eccentricity. I'm finding it very instructive. At least one thing, which I did do right now: > I compiled one score with and without your cross setting, and comparing > the two pdfs with Alt-Tab showed that the layout was perfectly identical - > except for the additional crosses. > So obviously the crosses are added after LilyPond decides about the layout. > I'm very glad to hear this! My worry was that the crosses might push staves further apart in extreme situations. Thanks for trying this out! -David ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: Feature request: Display bezier control-points
Hi Urs, > I would be very happy about one or two more features (that I unfortunately > can't implement myself: > - highlight (and separate from the music) the crosses through a color > - possibly adding a connecting (very thin) line, making it even more > intuitive > > Best > Urs how about: \version "2.14.2" #(define (make-cross-stencil coords) (ly:stencil-add (make-line-stencil 0.1 (- (car coords) 0.2) (- (cdr coords) 0.2) (+ (car coords) 0.2) (+ (cdr coords) 0.2)) (make-line-stencil 0.1 (- (car coords) 0.2) (+ (cdr coords) 0.2) (+ (car coords) 0.2) (- (cdr coords) 0.2 #(define (display-control-points line) (lambda (grob) (let ((stencil (ly:slur::print grob)) (cps (ly:grob-property grob 'control-points))) (ly:stencil-add stencil (ly:stencil-in-color (make-cross-stencil (second cps)) 1 0 0) (ly:stencil-in-color (make-cross-stencil (third cps)) 1 0 0) (if (eq? line #t) (make-line-stencil 0.05 (car (second cps)) (cdr (second cps)) (car (third cps)) (cdr (third cps))) empty-stencil) ) ))) \relative c'' { \override Slur #'stencil = #(display-control-points #t) c2( d e f) } HTH, Harm ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: Feature request: Display bezier control-points
Am 04.05.2012 02:31, schrieb Urs Liska: Am 04.05.2012 02:08, schrieb David Nalesnik: Hi Urs, > It would be a really valuable feature if one could let LilyPond display > the control-points of a bezier curve. > I would imagine something like a cross or a point at the middle two > control-points. I think this would be very helpful, so that you can visualize exactly what these control-points are that you're setting. (It must be a common misconception that they are points on the actual curve.) I'm not sure what impact this may have on the layout, but you could do something like the following: \version "2.15.37" #(define (make-cross-stencil coords) (ly:stencil-add (make-line-stencil 0.1 (- (car coords) 0.2) (- (cdr coords) 0.2) (+ (car coords) 0.2) (+ (cdr coords) 0.2)) (make-line-stencil 0.1 (- (car coords) 0.2) (+ (cdr coords) 0.2) (+ (car coords) 0.2) (- (cdr coords) 0.2 #(define display-control-points (lambda (grob) (let ((stencil (ly:slur::print grob)) (cps (ly:grob-property grob 'control-points))) (ly:stencil-add stencil (make-cross-stencil (second cps)) (make-cross-stencil (third cps)) \relative c'' { \override Slur #'stencil = #display-control-points c( d e f) } Hope you find this helpful! Wow, extremely! Of course I would prefer to have this built-in. And as you I can't really judge if this has side effects. But this really _is_ helping to find suitable values for the control-points. * Although I know bezier curves from vector graphics software, I also was convinced that the 'control-points' were four points on the curve that define its shape. * In fact the first and last are such points, whereas the middle two 'control-points' are the 'handles'. -> Is this explained somewhere? * From seeing the crosses I now realize that (when using your function) all four offsets are relative to LilyPond's original decision. Well, if you think about it, that's quite obvious, but I always assumed that if I change one offset the other control-points would be affected accordingly. But in fact they aren't. So if I for example raise the endpoint of a slur, the third control-point may well get below the slur. This makes me understand the seemingly strange behaviour of the slurs when fiddling with the offsets. * -> Probably it'll greatly improve my 'tweaking experience', even if I have seen this only once, not to speak if I manage to include this in a real-life workflow ... So, many thanks once more, David! I'll test this together with your new offset function (I intended to do it this very evening, but it has become sooo late now (here in Central Europe) ... At least one thing, which I did do right now: I compiled one score with and without your cross setting, and comparing the two pdfs with Alt-Tab showed that the layout was perfectly identical - except for the additional crosses. So obviously the crosses are added after LilyPond decides about the layout. So tomorrow I will incorporate all this into my set-up (in a way that in 'draft mode' display-control-points is active by default) I would be very happy about one or two more features (that I unfortunately can't implement myself: - highlight (and separate from the music) the crosses through a color - possibly adding a connecting (very thin) line, making it even more intuitive Best Urs Best Urs -David ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: Feature request: Display bezier control-points
Am 04.05.2012 02:08, schrieb David Nalesnik: Hi Urs, > It would be a really valuable feature if one could let LilyPond display > the control-points of a bezier curve. > I would imagine something like a cross or a point at the middle two > control-points. I think this would be very helpful, so that you can visualize exactly what these control-points are that you're setting. (It must be a common misconception that they are points on the actual curve.) I'm not sure what impact this may have on the layout, but you could do something like the following: \version "2.15.37" #(define (make-cross-stencil coords) (ly:stencil-add (make-line-stencil 0.1 (- (car coords) 0.2) (- (cdr coords) 0.2) (+ (car coords) 0.2) (+ (cdr coords) 0.2)) (make-line-stencil 0.1 (- (car coords) 0.2) (+ (cdr coords) 0.2) (+ (car coords) 0.2) (- (cdr coords) 0.2 #(define display-control-points (lambda (grob) (let ((stencil (ly:slur::print grob)) (cps (ly:grob-property grob 'control-points))) (ly:stencil-add stencil (make-cross-stencil (second cps)) (make-cross-stencil (third cps)) \relative c'' { \override Slur #'stencil = #display-control-points c( d e f) } Hope you find this helpful! Wow, extremely! Of course I would prefer to have this built-in. And as you I can't really judge if this has side effects. But this really _is_ helping to find suitable values for the control-points. * Although I know bezier curves from vector graphics software, I also was convinced that the 'control-points' were four points on the curve that define its shape. * In fact the first and last are such points, whereas the middle two 'control-points' are the 'handles'. -> Is this explained somewhere? * From seeing the crosses I now realize that (when using your function) all four offsets are relative to LilyPond's original decision. Well, if you think about it, that's quite obvious, but I always assumed that if I change one offset the other control-points would be affected accordingly. But in fact they aren't. So if I for example raise the endpoint of a slur, the third control-point may well get below the slur. This makes me understand the seemingly strange behaviour of the slurs when fiddling with the offsets. * -> Probably it'll greatly improve my 'tweaking experience', even if I have seen this only once, not to speak if I manage to include this in a real-life workflow ... So, many thanks once more, David! I'll test this together with your new offset function (I intended to do it this very evening, but it has become sooo late now (here in Central Europe) ... Best Urs -David ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: Feature request: Display bezier control-points
On Thu, May 3, 2012 at 7:08 PM, David Nalesnik wrote: > Hi Urs, > > > It would be a really valuable feature if one could let LilyPond display >> > the control-points of a bezier curve. >> > I would imagine something like a cross or a point at the middle two >> > control-points. >> > > I think this would be very helpful, so that you can visualize exactly what > these control-points are that you're setting. (It must be a common > misconception that they are points on the actual curve.) > Of course, you can use the slur tweak tool in LilyPondTool! -David ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: Feature request: Display bezier control-points
Hi Urs, > It would be a really valuable feature if one could let LilyPond display > > the control-points of a bezier curve. > > I would imagine something like a cross or a point at the middle two > > control-points. > I think this would be very helpful, so that you can visualize exactly what these control-points are that you're setting. (It must be a common misconception that they are points on the actual curve.) I'm not sure what impact this may have on the layout, but you could do something like the following: \version "2.15.37" #(define (make-cross-stencil coords) (ly:stencil-add (make-line-stencil 0.1 (- (car coords) 0.2) (- (cdr coords) 0.2) (+ (car coords) 0.2) (+ (cdr coords) 0.2)) (make-line-stencil 0.1 (- (car coords) 0.2) (+ (cdr coords) 0.2) (+ (car coords) 0.2) (- (cdr coords) 0.2 #(define display-control-points (lambda (grob) (let ((stencil (ly:slur::print grob)) (cps (ly:grob-property grob 'control-points))) (ly:stencil-add stencil (make-cross-stencil (second cps)) (make-cross-stencil (third cps)) \relative c'' { \override Slur #'stencil = #display-control-points c( d e f) } Hope you find this helpful! -David ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond
Re: Feature request: Display bezier control-points
On Thu, May 3, 2012 at 7:14 PM, Urs Liska wrote: > Sorry if I should be asking for something that is already possible, but at > least I don't know of it ... > > Tweaking slurs and similar curves is a matter of trial and error, although > David's functions that expect offsets instead of hardcoded control-points > greatly simplify it. > > It would be a really valuable feature if one could let LilyPond display > the control-points of a bezier curve. > I would imagine something like a cross or a point at the middle two > control-points. > > It should be settable through e.g. >\paper { display-control-points = ##t } > (like annotate-spacing) > > Is that of general interest? > And does it look complicated? > > Best > Urs Greetings, Urs and list members : Your request for an enhancement has been submitted as issue 2510 : http://code.google.com/p/lilypond/issues/detail?id=2510 Enjoy your music writing/transcribing/playing, Ralph ___ bug-lilypond mailing list bug-lilypond@gnu.org https://lists.gnu.org/mailman/listinfo/bug-lilypond