Re: Issue with AikenHeads with overlapping parts

[Colin Hall]

On Thu, Mar 22, 2012 at 11:19:42PM +0000, Colin Hall wrote:
> 
> On Thu, Mar 22, 2012 at 08:39:00PM +0000, Darren wrote:
> > > I'm not top posting.
> > 
> > I'm trying to create a score for four voices SATB that uses AikenHeads 
> > (shaped 
> > notes).  When two parts on the same staff overlap on the same notes (for 
> > example soprano and alto), it is customary to show the stems for the two 
> > parts 
> > going different directions so each part realizes that it is to sing the 
> > overlapping notes.
> > 
> > When I try to do this with LilyPond 2.14.2, 
> > 
> > 1. The heads face in opposite directions, which obscures the shape of the 
> > head.
> > 
> > 2. I tried suppressing the Note Head for one of the parts (made it 
> > transparent), however the stem does not meet the note head of the opposite 
> > part.
> > 
> > Example .ly code follows.  It requires a bit of detail to demonstrate the 
> > problem.  I have a screen shot I can provide if that would help (but this 
> > interface doesn't accept attachments).
> 

> Thanks for putting the bug report together, Darren. I was able to
> reproduce the behaviour you reported.

> I also tried removing the \ignoreCollide from your source just to
> see what happens, and I have to say that the output looks correct to
> me. See attached. The notes are both supertonics and the note shape
> seems correct.

Ooops! Not supertonics, they are subdominants. But you take my point.

> But I've never used Aikenhead notation so I may not be the best judge. I will 
> create a tracker so we don't lose your input. In the meantime, could you send 
> an example of good practice for colliding Aikenhead notes, or an image of 
> what you think Lilypond should do in this situation?

New issue tracker is 2430, see link:

http://code.google.com/p/lilypond/issues/detail?id=2430

Cheers,
Colin.

-- 

Colin Hall