Re: Tie engraver

[Urs Liska]

Hi Andrew,

this helps a lot to see the problem - and the solution ;-)

Setting \voiceOne and \voiceTwo (and your polyphony construct does so implicitly) takes a number of property and sets them to the "proper" direction, with "proper" meaning what is right for default polyphonic music.

In a case like yours you will generally want to set the voice number (or accept what the << {} \\ {} >> syntax does automatically) and override certain properties that don't match in the concrete case.

Here you should stick to the \voiceOne / \voiceTwo because that will properly handle stem directions and (if applicable) dynamics, slurs etc., so they all get printed "outside".
What you now want is \tieNeutral, which tells LilyPond to typeset ties independently from the voice number attribution.

This will probably save you _lots_ of individual tweaks, and when you still have to make adjustments you can use ^~ and _~ with the individual notes inside the chords.

HTH
Urs

Am 28.04.2015 um 14:32 schrieb Andrew Bernard:

Hi Urs,

Yes,  a small example always helps. I should have included one to begin with.

The snippet here shows how the up/down behaviour is the default, but when you go into voices the ties are unidirectional. All this is correct, I now understand. What I was wanting was to be able to override the voicing style defaults and tell the engraver to do it ‘my’ way, instead of the ‘proper’ way.

Andrew

\version "2.19.18"

treble = \relative c'' {

  \clef treble

  \time 1/4

  

  <c e g>^\markup { A } ~ <c e g> <c e g c>~ <c e g c>

  <<

    {

      <c e g>^\markup { B } ~ <c e g> <c e g c>~ <c e g c>

    }

    \\

    {

      <c,, e g> ~ <c e g> <c e g c>~ <c e g c>

    }

  >>

}

\score {

  \new Staff { \treble }

  \layout { }

}

From: Urs Liska
Date: Tuesday, 28 April 2015 22:12
To: David Nalesnik, Andro
Cc: lilypond-user
Subject: Re: Tie engraver

Am 28.04.2015 um 13:58 schrieb David Nalesnik:

Andrew,

On Tue, Apr 28, 2015 at 4:46 AM, Andrew Bernard <address@hidden> wrote:

Hi Urs and David,

Thanks so much. Yes, my chords are in voices so the slurs all face the same direction accordingly. I was completely unaware of this aspect of engraving. I had better study more scores and order that copy of Behind Bars!

But then the question becomes transformed - can you tell the tie engraver for a voice to override its default behaviour, even though that may be technically incorrect? I have literally several hundred I need to tweak.

No easy way that I know of.  Or, rather, no way that doesn't involve a lot of copied code from various files.  The attached should make life easier, but note that it won't work in at least one construct.

From Andrew's description I'm not 100% clear what he actually means. Maybe everything is much simpler?

Do you mean you don't have <x y > chords at all but polyphonic voices that line up to "chords"?
In that case you can force any of the voices' ties in a direction through \tieUp, \tieDown and \tieNeutral. Which is in the manuals ...

Urs

Best,

David