Re: Beam settings in 2.13.29

[Trevor Daniels]

Nick Payne wrote Saturday, August 07, 2010 12:22 AM

> I also notice that when I turn off the beamExceptions the beaming 
> goes a
> bit haywire. Have a look at bars 5 and 6 after I have used \set
> beamExceptions = #'():

This is due to erroneous ly input; see below:

> \version "2.13.29"
>
> changeBeamingA = \overrideTimeSignatureSettings
>       #'Score
>       #'(2 . 4)  % time signature fraction
>       #'(1 . 8)  % base moment fraction
>       #'(1)    % beatStructure

This should be
       #'(1 1 1 1)  % base moment fraction
if you want beams grouped in quavers else only
the first 1/8 is a separate beam group.

Or, if you want the default to beam the whole bar you need
       #'(1 . 2)  % base moment fraction
       #'(1)    % beatStructure

>       #'((end . (((1 . 16) . (2 2 2 2))
>                    ((1 . 24) . (3 3 3 3))
>                    ((1 . 32) . (4 4 4 4))
>                    ((1 . 48) . (6 6 6 6))))) % beamExceptions
>
> changeBeamingB = \set beamExceptions =
>       #'((end . (((1 . 16) . (2 2 2 2))
>                  ((1 . 24) . (3 3 3 3))
>                  ((1 . 32) . (4 4 4 4))
>                  ((1 . 48) . (6 6 6 6))))) % beamExceptions
>
> revertBeaming = \set beamExceptions = #'()
>
> \relative c'' {
>     \set tupletSpannerDuration = #(ly:make-moment 1 8)
>     \changeBeamingA
>     \time 2/4
>     \repeat unfold 8 c16
>     \times 2/3 { \repeat unfold 12 c16 }
>     \repeat unfold 16 c32
>     \times 4/6 { \repeat unfold 24 c32 }
>     \revertBeaming
>     \break \repeat unfold 8 c16 \repeat unfold 16 c32
>     \changeBeamingB
>     \repeat unfold 8 c16
>     \times 2/3 { \repeat unfold 12 c16 }
>     \repeat unfold 16 c32
>     \times 4/6 { \repeat unfold 24 c32 }
> }