Re: shorthand for autoBeam control

[Trevor Bača]

On Sat, Oct 25, 2008 at 9:43 PM, Jonathan Kulp <address@hidden> wrote:

Trevor, this is cool!  I think in your first example, though, where you want to illustrate right-pointing flags on a lone note, you mean to say "set stemLeftBeamCount to zero"?  Or do I misunderstand the example? Otherwise the first and second examples display the same thing.

Damn. Cut and paste error. Yes, you're totally right: the first example should talk about stemLeftBeamCount instead of stemRightBeamCount.

OK, let's try these:

%%%%%%% FLAT FLAGS & BEAM NIBS %%%%%

Flat flags on lone notes and beam nibs at the ends of beamed figures are both possible with a combination of stemLeftBeamCount, stemRightBeamCount and paired [ ] beam indicators.

For right-pointing flat flags on lone notes, use paired [ ] beam indicators and set stemLeftBeamCount to zero.

  \new RhythmicStaff {
    \set stemLeftBeamCount = #0
    c'16 [ ]
    r8.
  }

For left-pointing flat flags, set stemRightBeamCount instead.

  \new RythmicStaff {
    r8.
    \set stemRightBeamCount = #0
    c'16 [ ]
  }

For right-pointing nibs at the end of a run of beamed notes, set stemRightBeamCount to a positive value. And for left-pointing nibs at the start of a run of beamed notes, set  stemLeftBeamCount instead.

  \new RhythmicStaff {
    c'16
    c'16
    \set stemRightBeamCount = #2
    c'16
    r16
    r16
    \set stemLeftBeamCount = #2
    c'16
    c'16
    c'16
  }

Sometimes it may make sense for a lone note surrounded by rests to carry both a left- and right-pointing flat flag. Do this with paired [ ] beam indicators alone.

  \new RhythmicStaff {
     c'16
     c'16
     \set stemRightBeamCount = #2
     c'16
     r16
     c'16 [ ]
     r16
     \set stemLeftBeamCount = #2
     c'16
     c'16
  }

%%%%%%%%%

Oh, something else to realize when reading examples with \set stemLeftBeamCount is that the \set here is always equivalent to \once \set. In other words, the beam count settings aren't "sticky". This fact is indicated clearly in the docs, but, unless you use the setting frequently, the examples above might be a bit confusing.

(Especially the last example with the lone [ ]: it's important to understand here that the pair of flat flags attaching to the lone c'16 [ ] have nothing to do with the \set two notes prior.)






-- 
Trevor Bača
address@hidden