Re: Sketchy sketch for a modification to the typesetting backend. (issue4446060)

[Han-Wen Nienhuys]

On Mon, Apr 25, 2011 at 9:45 AM,  <address@hidden> wrote:
> I realized that it was way too restrictive to have cross-staff beams
> avoid stems and beams - Reinhold had sent out a Beethoven example a
> while back that would need cross staff beams to take other beams into
> consideration.
>
> The real problem is that certain cross staff beams are not in fact cross
> staff beams.  This patch weeds them out of beam collision work via a new
> function Beam::is_fake_cross_staff.  Ultimately, this sorta logic can
> disappear once the beam collision engraver moves up to the score level,
> which seems like something that'll cause several bugs in the unstable
> version (if history is any indication) and thus is something I'm holding
> off on until this current crop of bugs dies down.

Can you try with looking for the common Y refpoint of stems and beam,
and seeing if that is an Y-aligment instead?  This code looks a bit
kludgey.

alternatively, put all staff_syms into a set<Grob*> and check if the length > 1.

-- 
Han-Wen Nienhuys - address@hidden - http://www.xs4all.nl/~hanwen