Re: slurs in polyphony and TabStaff problems

[Colin Hall]

On Sun, Jun 10, 2012 at 03:08:58AM +0200, Federico Bruni wrote:
> Il 07/06/2012 11:21, address@hidden ha scritto:
> >
> >On 7 juin 2012, at 07:36, Federico Bruni wrote:
> >
> >>Il 04/06/2012 09:11, address@hidden ha scritto:
> >>>On 4 juin 2012, at 08:05, David Kastrup wrote:
> >>>
> >>>>Federico Bruni<address@hidden>   writes:
> >>>>
> >>>>>Another report about slurs and TabStaff.
> >>>>>IIUC, now slurs connect note heads in polyphony (instead of stems).
> >>>>>I _think_ that it's a desired output.
> >>>>
> >>>>Frankly, it does not look like an improvement to me on the normal staff
> >>>>either.  I thought that maybe the EventChord changes would have been
> >>>>responsible, but it does not seem so.  Maybe Stem/Flag?
> >>>
> >>>You're right.  Solution found, running regtests, will post soon.
> >>>
> >>
> >>Hey Mike,
> >>
> >>I _think_ this is related: try the attached example, the problem
> >>is with \voiceTwo activated.
> >>
> >>The slur in TabStaff is really ugly.
> >>Tested with 2.15.40 packaged version
> >>
> >>Thanks,
> >>Federico
> >
> >Hey Federico,
> >
> >It is and it isn't.  It's likely linked to the same underlying problem, but 
> >the problem you identify above already exists in 2.14.0.  My work on Stems 
> >and Flags exacerbated the problem for certain slurs.
> >
> >The problem is that, around line 167 of lily/slur-scoring.cc, there is not 
> >enough checking to see if the stems are printed on the page.  As a result, 
> >ghosted stems are taken into account.
> >
> >Before I fix this, I'll need a bit of feedback from a guitar 
> >player/enthusiast - could someone who knows tablature inside out look at 
> >Federico's example and let me know how the slur should be typeset (ideally 
> >w/ a PDF)?  Should these be treated more or less like whole notes?
> >
> >Cheers,
> >MS
> >
> 
> Hi Mike,
> 
> I'm CCing lilypond-user, hoping that they will give you some feedback.
> I'm not expert in notation at all. All I can say is that slur should
> be closer to notes (see .svg file edited in Inkscape).

Hi Federico,

The SVG file you sent looks nothing like the PNG images that you sent
in your original bug report that started this thread. It looks a bit
like the one for your other bug report "Ugly slur in TabStaff if font
is changed"

Can you clarify please?

Here are the two bug reports and related trackers:

------------
"Ugly slur in TabStaff if font is changed"

Report:
http://lists.gnu.org/archive/html/bug-lilypond/2012-06/msg00019.html

Tracker:
http://code.google.com/p/lilypond/issues/detail?id=2587
--------------

also:

--------------
"slurs in polyphony and TabStaff problems"

Report:
http://lists.gnu.org/archive/html/bug-lilypond/2012-06/msg00022.html

Tracker (which I just created):
http://code.google.com/p/lilypond/issues/detail?id=2587
-------------

Cheers,
Colin.

-- 

Colin Hall