Issue 1493 in lilypond: Problem with horizontal beams

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Enhancement Priority-Low Frog

New issue 1493 by address@hidden: Problem with horizontal beams
http://code.google.com/p/lilypond/issues/detail?id=1493

James Lowe :
There seems to be an inconsistency with setting horizontal beams.

We have a snippet where we state that

\override Beam #'damping = #+inf.0

Should generate horizontal beams in all cases.

However the simple example attached shows some odd inconsistencies.

   \version "2.13.40"

\relative c''  {
    \override Beam #'damping = #+inf.0
     f16 g a b    a c d g,    a b a c   d e f g, % all beams horizontal
     f16 g a b    a c d g,    a b a c   d e f g, % all beams horizontal
     f16 g a b    a c d g,    a b a c   d e f g, % 2nd and 4th group not  
Horizontal
     f16 g a b    a c d g,    a b a c   d e f g, % 2nd and 4th group not  
Horizontal
}

\relative c''  {
    \override Beam #'damping = #+inf.0
     f16 g a b    a c d g,    a b a c   d e f g, \break % 4th group not  
Horizontal
     f16 g a b    a c d g,    a b a c   d e f g, \break % 2nd and 4th group  
not Horizontal
     f16 g a b    a c d g,    a b a c   d e f g, \break % 2nd and 4th group  
not Horizontal
     f16 g a b    a c d g,    a b a c   d e f g, \break % 2nd and 4th group  
not Horizontal
}

Phil Holmes :

I'd suggest the snippet is worth sorting out, too.  What do you reckon -  
adding the commands

   \override Beam #'details #'damping-direction-penalty = #0
   \override Beam #'details #'round-to-zero-slope = #0

to the existing snippet, or a new one pointed to by the old one, that  
says "if  \override Beam #'damping = #+inf.0 doesn't do what you want, add  
the other commands too, as shown here"?


Attachments:
        screenshot.png  24.6 KB
        beams.ly  807 bytes