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Re: Grace Note Thickness


From: Pierre Perol-Schneider
Subject: Re: Grace Note Thickness
Date: Wed, 23 May 2012 22:08:20 +0200

Dear Thomas,

I've followed your instruction and when I code :

\version "2.15.39" 

  \clef "treble_8"     
  \time 3/8
  \stemUp
  e'4. | %2
  \slurDown
  \appoggiatura { b'32 [ c'' b' ais' ] } b'8 [ c'' b'16 \glissando e'' ] | %2

this works fine (see first staff enclosed).

Problem comes with the polyphony :

\version "2.15.39" 

  \new Staff 
  << 
  \new Voice = "first"
    {  \voiceOne 
       \clef "treble_8"     
       \time 3/8
       \stemUp
       e'4. | %2
       \slurDown
       \appoggiatura { b'32 [ c'' b' ais' ] } b'8 [ c'' b'16 \glissando e'' ] | %2 
    }
  \new Voice= "second"
    {  \voiceTwo s2. }
  >>
}

( see second staff)  beam-thickness does not apply on grace notes ...

2012/5/23 Pierre Perol-Schneider <address@hidden>
See airy.png 


2012/5/23 Pierre Perol-Schneider <address@hidden>
> BTW, what do you intend at all?

In the last LilyPond Report , the comparison of Breitkopf and the "airy" Lilypond outpout, according to Janek, is something that I agree 100% for quite a long time.
What I would like to do is, as a 1st step, to raise the beam thickness up to #.55~59.

2012/5/23 Thomas Morley <address@hidden>
2012/5/23 Pierre Perol-Schneider <address@hidden>:
> Hi Groups,
>
> few months ago Thoms Morley (found thanks too Google) sent this code, wiche
> works fine :
(...)
> Now I would like to understand this :
>
> 1)
>
> \version "2.15.39"
>
> music = \relative c' {
>         \grace { d,16 [des] } c4
> }
> \score {
>         <<
>         \new Staff { \clef "G_8" \music}
>         \new TabStaff {
>                 \tabFullNotation
>                 \revert TabVoice.Flag #'transparent
>                 \music
>         }
>         >>
>         \layout {
>                 \context {
>                         \Score
>                         graceSettings = #`((Voice Stem length-fraction .5)
>                                            (Voice TabNoteHead font-size -4)
>                                            (Voice Beam beam-thickness 0.1))
>                 }
>          }
> }
>
>
> affect both staff and tabstaff grace notes (see *3.png)

Of course, you changed the context to \Score

> BUT, when thickness is increased :
(...)
> affect ONLY tabstaff grace notes.  (see *4.png)

Can't confirm. All grace-notes _are_ affected, but in a different
degree. I added
(Voice Beam length-fraction 1.5) to make this effect more visible:

\version "2.15.38"

music = \relative c' {
       \grace { d,16 [des] } c8 d e f
}
\score {
       <<
       \new Staff { \clef "G_8" \music}
       \new TabStaff {
               \tabFullNotation
               \revert TabVoice.Flag #'transparent
               \music
       }
       >>
       \layout {
               \context {
                       \Score
                       graceSettings = #`((Voice Stem length-fraction .5)
                                          (Voice TabNoteHead font-size -4)
                                          (Voice Beam length-fraction 1.5)
                                          (Voice Beam beam-thickness 0.5))
               }
        }
}

>
> 2) if I change, for example, (beam-thickness . 0.48) to (beam-thickness .
> 0.58) in the define-grobs.scm file this DOES NOT affect grace notes.  (see
> *5.png)

In graceSettings (Voice Beam beam-thickness 0.5) overrides other
alterations of beam-thickness (using an override in the file or
changing the value in define-grobs.scm), but only for grace-notes.

BTW, what do you intend at all?

Regards,
 Harm



Attachment: Polyphony.png
Description: PNG image


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