Re: Replicating chord slurs

[Thomas Morley]

2017-01-06 19:00 GMT+01:00 Joel C. Salomon :
> On 2017-01-05 1:04 PM, Thomas Morley wrote:
>> setting spanner-id via \=... has still some shortcomings.
>>
>> In _this_ and only this case I'd go for a complete stencil-rewrite,
>> tailored at mass (every bow starts/ends at same height.
>
> Nice!  I can see where this has its weaknesses too: it wouldn’t work if
> the two chords weren’t approximately at the same height,

Ofcourse, it's a special override for a special, single situation.

> but it’s
> perfect for this case.  Thank you.
>
> (Now I have to make an editorial decision whether to keep this, or to
> use standard LilyPond chord slurs––i.e., just one single slur curve––and
> be consistent throughout the project.)
>
> Question about the code, though:  I can kinda-sorta follow what it’s
> doing, or at least I can figure out where in the reference manual to
> look up the details.  But whence the numbers 0, 1, 2.4, & 3.7?  Are
> these trial-and-error numbers?

Yep.
One could probably reduce them with reading out the original stencil
extent, but still, at least two bows would need correction anyway, so
I decided: to much work for one-time-use

Btw, I didn't clean things like (- whatever 0). So follow readers have
a hint where to insert custom values...

And ofcourse it's all fragile like hell, but doable :)

If you could friend yourself with the possibities Abraham and Davd
demonstrated I'd go for it.


Cheers,
  Harm

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Re: Replicating chord slurs

[David Wright]

On Fri 06 Jan 2017 at 13:00:32 (-0500), Joel C. Salomon wrote:
> On 2017-01-05 1:04 PM, Thomas Morley wrote:
> > setting spanner-id via \=... has still some shortcomings.
> > 
> > In _this_ and only this case I'd go for a complete stencil-rewrite,
> > tailored at mass (every bow starts/ends at same height.
> 
> Nice!  I can see where this has its weaknesses too: it wouldn’t work if
> the two chords weren’t approximately at the same height, but it’s
> perfect for this case.  Thank you.
> 
> (Now I have to make an editorial decision whether to keep this, or to
> use standard LilyPond chord slurs––i.e., just one single slur curve––and
> be consistent throughout the project.)

Oh, if you don't have to copy it exactly, can't you just
write a tie and let LP do its own thing?

Cheers,
David.
\language "english"

\score {
  \relative c' {
\time 3/4
2
4

2
4

2
4
}
  \layout {}
}


slurs.pdf
Description: Adobe PDF document
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Re: Replicating chord slurs

[Joel C. Salomon]

On 2017-01-05 1:04 PM, Thomas Morley wrote:
> setting spanner-id via \=... has still some shortcomings.
> 
> In _this_ and only this case I'd go for a complete stencil-rewrite,
> tailored at mass (every bow starts/ends at same height.

Nice!  I can see where this has its weaknesses too: it wouldn’t work if
the two chords weren’t approximately at the same height, but it’s
perfect for this case.  Thank you.

(Now I have to make an editorial decision whether to keep this, or to
use standard LilyPond chord slurs––i.e., just one single slur curve––and
be consistent throughout the project.)

Question about the code, though:  I can kinda-sorta follow what it’s
doing, or at least I can figure out where in the reference manual to
look up the details.  But whence the numbers 0, 1, 2.4, & 3.7?  Are
these trial-and-error numbers?

––Joel C. Salomon

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Re: Replicating chord slurs

[tisimst]

Hi, Joel!

On Thu, Jan 5, 2017 at 8:38 AM, Joel C. Salomon [via Lilypond] <
ml-node+s1069038n198891...@n5.nabble.com> wrote:

> Neighbors,
>
> I’m trying to replicate the chord slurs in the attached image. This
> shows the closest two versions I’ve managed (image also attached):
>
> \version "2.19.54"
> \language "english"
>
> \score {
>   \relative c' {
> \time 3/4
> <cs\=1( e!\=2( g\=3^( as\=4^(>2
> <d\=1) g\=2)\=3) b\=4)>4
>
> <cs\=1( e!\=2( g\=4^( as\=3^(>2
> <d\=1) g\=2)\=3) b\=4)>4
>   }
>   \layout {}
> }
>
> The first has the right notes slurred together, but looks bad; the
> second looks less bad, but still isn’t right. Can anyone suggest another
> tweak I might try here?
>

A couple of thoughts for you (sorry, I'm using absolute pitch in all my
examples below). From top to bottom in the original score, here's what I
see:

1. as' ( b' )
2. g' ~ g'
3. e!' ( g' )
4. cs' ( d' )

Personally, I think this is overkill with the slurs since you really only
need one from one chord to the next, two max (is this for piano?). Now that
I'm looking at it a little closer, I wonder what the purpose of the slur in
e'! ( g' ) is supposed to mean in the first place... You can't play it AND
the tie at the same time, unless it's indicating a finger exchange or
something like that. So, here's what I'd recommend:

1. If you MUST replicate the original, re-map the curves to include the
tie, then adjust shapes as necessary (I think the tie is all you may need
to adjust--maybe flip its direction to DOWN?):

  <cs'\=1_( e'!\=2_( g'^~ as'\=3^(>2 <d'\=1) g'\=2) b'\=3)>4

2. Re-notate the progression with two voices, and combine the tied g' into
a single note, like so:

  << { g'2. } \\ { <cs' e'! as'>2 ( <d' g' b'>4 ) } >>
OR
  << { <cs' e'! as'>2 ( <d' g' b'>4 ) } \\ { g'2. } >>

depending on which order appears better to you.

3. If the tie is superfluous, then

  <cs' e'! g' as'>2 ( <d' g' b'>4 )

4. If the second g' is really supposed to be sustained, then I'd do #2 and
omit the g' from the second slurred chord:

  << { g'2. } \\ { <cs' e'! as'>2 ( <d' b'>4 } >>

If I had to choose one, I'd go with #3 or #4.

HTH,
Abraham

[image: Inline image 2]


image.png (25K) 
<http://lilypond.1069038.n5.nabble.com/attachment/198896/0/image.png>




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Re: Replicating chord slurs

[Thomas Morley]

2017-01-05 16:32 GMT+01:00 Joel C. Salomon :
> Neighbors,
>
> I’m trying to replicate the chord slurs in the attached image. This
> shows the closest two versions I’ve managed (image also attached):
>
> \version "2.19.54"
> \language "english"
>
> \score {
>   \relative c' {
> \time 3/4
> 2
> 4
>
> 2
> 4
>   }
>   \layout {}
> }
>
> The first has the right notes slurred together, but looks bad; the
> second looks less bad, but still isn’t right. Can anyone suggest another
> tweak I might try here?
>
> ––Joel C. Salomon



Hi,

setting spanner-id via \=... has still some shortcomings.

In _this_ and only this case I'd go for a complete stencil-rewrite,
tailored at mass (every bow starts/ends at same height.

\version "2.19.52"

myStil =
  #(lambda (grob)
(let* ((c-ps (ly:slur::calc-control-points grob))
   (thick 0.1)
   (angularity 0.5)
   (height (/ (ly:grob-property grob 'minimum-length) 10)))
   (ly:stencil-add
(make-bow-stencil
  (cons (+ (car (car c-ps)) 1) (- (cdr (car c-ps)) 0))
  (cons (- (car (fourth c-ps)) 1) (- (cdr (car c-ps)) 0))
  thick angularity height UP)
(make-bow-stencil
  (cons (+ (car (car c-ps)) 1) (- (cdr (car c-ps)) 1))
  (cons (- (car (fourth c-ps)) 1) (- (cdr (car c-ps)) 1))
  thick angularity height UP)
(make-bow-stencil
  (cons (+ (car (car c-ps)) 0) (- (cdr (car c-ps)) 2.4))
  (cons (- (car (fourth c-ps)) 1) (- (cdr (car c-ps)) 2.4))
  thick angularity height DOWN)
(make-bow-stencil
  (cons (+ (car (car c-ps)) 0) (- (cdr (car c-ps)) 3.7))
  (cons (- (car (fourth c-ps)) 1) (- (cdr (car c-ps)) 3.7))
  thick angularity height DOWN

mySlur =
\tweak minimum-length #10
\tweak direction #UP
\tweak stencil \myStil
\etc


\new Staff \relative c' {
2 -\mySlur (
4)
}


Hopefully someone comes up with a better idea.

Cheers,
  Harm

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Replicating chord slurs

[Joel C. Salomon]

Neighbors,

I’m trying to replicate the chord slurs in the attached image. This
shows the closest two versions I’ve managed (image also attached):

\version "2.19.54"
\language "english"

\score {
  \relative c' {
\time 3/4
2
4

2
4
  }
  \layout {}
}

The first has the right notes slurred together, but looks bad; the
second looks less bad, but still isn’t right. Can anyone suggest another
tweak I might try here?

––Joel C. Salomon
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