Re: Proposed Doc Changes in Polyphonic music

[Mats Bengtsson]

I hope you are aware of the fact that the only difference between \voiceOne
and \voiceThree is that the latter includes a \shiftOn. Similararly for
\voiceTwo versus \voiceFour. Therefore, two other methods to get the
same result as your second measure is
  << {d=''2 \voiceThree  g2 } \\
      {\oneVoice d=''8 c8 r4 e,8 c'8 r4 } \\
      { \voiceFour e,,2 e'2}
   >>
   << {\oneVoice d=''8 c8 r4 e,8 c'8 r4 } \\ {} \\
      {d=''2 g2 } \\
      { e,,2 e'2}
   >>

Note also that it's probably better to write \oneVoice instead of 
\stemNeutral,
if that voice also involves ties, slurs, articulations and so on.

  /Mats

Carl D. Sorensen wrote:
> Here is a proposed doc addition to section 6.3.5 Collision Resolution
>
> Just befor the heading Predefined Commands, I'd recommend the following
>
> ---
> If three or more notes line up in the same column,
> merge-differently-headed can't
> successfully complete the merge of the two notes that should be merged.
> To allow the merge to work properly, apply a \shift to the note that
> should not be merged.
> In the first measure of the example below, merge-differently-headed
> doesn't work (the half-note head is solid).  In the second measure,
> \shiftOn is applied to move the top g out of the column, and
> merge-differently-headed works properly.
>
>
> %%%% Begin .ly snippet
> % \shiftXxx can be used to avoid "warning: too many clashing note
> columns"
>
>
> \version "2.10.5"  %Windows XP
>
> \paper {indent = 0\mm ragged-right = ##t}
>
> \relative c' {
>     \override Staff.NoteCollision #'merge-differently-headed = ##t 
>     << {d=''2   g2 } \\ 
>        {\stemNeutral d=''8 c8 r4 e,8 c'8 r4 } \\ 
>        { \voiceFour e,,2 e'2} 
>     >>
>     << {d=''2 \shiftOn  g2 } \\ 
>        {\stemNeutral d=''8 c8 r4 e,8 c'8 r4 } \\ 
>        { \voiceFour e,,2 e'2} 
>     >>
> }
> %%%%  end of .ly snippet.
>
> ---
>
> Also, in the Predefined Commands part of section  6.3.5 Collision
> resolution, the first sentence should read "these commands specify the
> degree to which chords of the current voice should be shifted." ISO
> "these commands specify in what chords of the current voice should be
> shifted."
>
> --
>
> Immediately before 6.3.5 Collision Resolution, the following text could
> be added:
>
>
> In some instances of complex polyphonic music, you may need additional
> voices to avoid collisions between notes.  Additional voices are added
> by defining an identifier, as shown below
>
> voiceFive = #(context-spec-music (make-voice-props-set 4) 'Voice)
>
> << { \voiceOne g''4 ~  \stemDown g32[ f( es d c b a b64 )g] } \\ { 
> \voiceThree  b4} \\ { \voiceFive d,} \\ { \voiceTwo g,}\\>>
>
> ---
>
> Graham, I've greatly admired your work on the docs.  Now I'm even more
> impressed, given that you can work on the docs during momentary pauses
> in FFT lectures!
>
> Carl Sorensen
>
> Carl D. Sorensen
> Associate Professor
> Department of Mechanical Engineering
> Brigham Young University
> Provo, UT 84602
> 801-422-6397     Fax 801-422-0516 
>
>
> _______________________________________________
> lilypond-devel mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/lilypond-devel
>   

--
=============================================
        Mats Bengtsson
        Signal Processing
        Signals, Sensors and Systems
        Royal Institute of Technology
        SE-100 44  STOCKHOLM
        Sweden
        Phone: (+46) 8 790 8463                         
       Fax:   (+46) 8 790 7260
        Email: address@hidden
        WWW: http://www.s3.kth.se/~mabe
=============================================