Re: Automatic beaming global settings

[Nick Payne]

On 10/09/10 23:35, James Worlton wrote:
> Hello,
>
> I'm trying to define the set of default automatic beamings for a 
> score. The new beaming function is nice, but it won't let me set 
> multiple rules in a global variable. Here is what I'm trying to do--I 
> have a rule for 4/4 and a rule for 3/4 that limits beaming to a 
> quarter note:
>
> \version "2.13.32"
> global = {
>     \overrideTimeSignatureSettings
>         #'Score
>         #'(4 . 4)  % time signature fraction
>         #'(1 . 4)  % base moment fraction
>         #'(1 1 1 1)    % beatStructure
>         #'()       % beamExceptions
>
>     \overrideTimeSignatureSettings
>         #'Score
>         #'(3 . 4)  % time signature fraction
>         #'(1 . 4)  % base moment fraction
>         #'(1 1 1)    % beatStructure
>         #'()       % beamExceptions %}
> }
>
> music = \relative c' {
>     \time 4/4
>     \repeat unfold 4 { c8 c c c c c c c }
>     \time 3/4
>     \repeat unfold 4 { c8 c c c c c }
> }
>
> \score {
>     \new Staff {
>         \global
>         \music
>     }
>     \layout { }
> }
>
> The problem is that with just one of those rules define in \global, 
> everything is fine. With the 2 definitions, only the last one takes 
> effect. I tried putting them in separate variables (\globalFour and 
> \globalThree) and then calling both in the \new Staff before \music, 
> but that didn't work either.
>
> Is there a way to do this?

This seems to work:

\version "2.13.32"

global = \set beamExceptions =
    #'((end . (((1 . 8) . (2 2 2 2))
                ((1 . 8) . (2 2 2)))))

revertBeaming = \set beamExceptions = #'()

music = \relative c' {
    \time 4/4
    \repeat unfold 4 { c8 c c c c c c c }
    \time 3/4
    \repeat unfold 4 { c8 c c c c c }
}

\score {
    \new Staff {
        \global
        \music
    }
    \layout { }
}