Re: mensural notation

[Juergen Reuter]

Hi, Pal!

On Wed, 20 Apr 2005, Pal Benko wrote:

> Hi all,
>
> attached is a patch with changed mensural noteheads.
>
> ...

> fet_beginchar("Mensural open head","s0mensural")
> -       draw_diamond_head (staff_space#, 0.15, 0.30, 30, true);
> +%      draw_diamond_head (1.8 staff_space#, 0.15, 0.40, 30, true);
> +      draw_neomensural_open_head (staff_space#, 1.8 staff_space#);
> fet_endchar;
>
> fet_beginchar("Mensural open head","s1mensural")
> -       draw_diamond_head (staff_space#, 0.15, 0.30, 30, true);
> +%      draw_diamond_head (1.8 staff_space#, 0.15, 0.40, 30, true);
> +      draw_neomensural_open_head (staff_space#, 1.8 staff_space#);
> fet_endchar;
>
> fet_beginchar("Mensural black head","s2mensural")
> -       draw_diamond_head (staff_space#, 0.15, 0.30, 30, false);
> +%      draw_diamond_head (1.8 staff_space#, 0.15, 0.40, 30, false);
> +      draw_neomensural_black_head (staff_space#, 1.8 staff_space#);
> fet_endchar;

What I do not understand, if you want neo-mensural noteheads, why not just
doing "\override Voice.NoteHead #'style = #'neomensural"?

> Some problems:
> 1. MensuralStaff sort of ceased to work for me - or, rather,
> I was using it inaccurately.  Roughly I wrote
>
> \score {
>  \context MensuralStaff {
>    % notes here
>  }
> }
>
> But since last week this doesn't work.


Ok, I will look into this.


> 2. I'd like to make punctus divisionis work as a new bar symbol,
> \bar ".".  But for correct positioning I need in
> Bar_line::compound_barline the previous and the next note - how
> can I get them (if I can at all)?

Maybe in the bar engraver, you can do something similar to what the 
ligature engraver does: listening for note heads (but not eating it up 
as the ligature engraver does), remembering the pitch of the last seen 
one, and when a bar is created, putting the pitch as a grob value into the 
bar grob, and doing similar for the pending next note's pitch.  You 
probably should discuss this with Han-Wen or Jan.

> 3. I hacked Mensural_ligature a bit so that now I don't have
> those spurious warnings for flexa shapes and I have horizontal
> positioning of dots all right.

Great to hear!

> I want to have correct vertical
> positions; in Mensural_ligature I can calculate the correct
> position, but I don't know how to propagate this information
> (and in fact I don't really know where to propagate it, but I
> guess it's Dot_column or Dot_column_engraver).

See Han-Wen's reply.

Greetings,
Jürgen


> thanks,
> Pal
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