Re: Cross staff beams with subdivision

[Keith OHara]

Noeck <noeck.marburg <at> gmx.de> writes:

> >   \once\override Rest #'minimum-Y-extent = #'(0 . 9)
> >   r8 gis,,,,!32\([ b dis gis!
> >     \change Staff=upper \times 4/6 { b dis gis! b dis gis!\)] }
> 
> Is there a preferred way using some staff spacing instead of using space 
> around a rest, that happens to be close by?
> 

I think the staff spacing parameters take effect for the whole score.
I do not think that LilyPond figure searches to find the spacing parameters 
currently in effect for each line, for every potential way of line-breaking.
I also find it hard figure out how to input the staff-spacing parameters.

It was easier for me to learn one way flexible to request extra space,
and use the same method whether LilyPond needs to change staff-spacing, 
slur-position, or note-spacing to meet my request for the space.

Unfortunately, the way I learned does not work in the development versions,
(I just tried 2.17.3) because some spacing decisions now use the actual 
printed shape, not the "extent" that I have been adjusting
<http://code.google.com/p/lilypond/issues/detail?id=2148>

Sometime before 2.18 I will need to find a new method.  The best I can think
of so far is to print a tall invisible box---a "phantom strut"---where I need 
space.

  r8-\tweak #'stencil #(ly:make-stencil '() '(0 . 0.1) '(0 . 6) ) 
    ^"request space above, so that the staves spread" 
  gis,,,,!32\([ b dis gis!
    \change Staff=upper \times 4/6 { b dis gis! b dis gis!\)] }