Re: Help

[Thomas Morley]

Again, please keep the list cc'ed.
I don't like private mails for LilyPond-support.

For your pupose, as far as I understand it, I'd go for a different coding:
Basically, combine two circles to build the new NoteHead.
You surely want to adjust 'stem-attachment as well:

{
  \override NoteHead.stem-attachment =
    #(lambda (grob)
       (cons (ly:grob-property (ly:grob-object grob 'stem) 'direction) 0))

  \override NoteHead.stencil =
    #(lambda (grob)
      (ly:stencil-add
        (make-circle-stencil 0.5 0.1 #f)
        (make-circle-stencil 0.125 0.1 #t)))

  b'1 b'2 b'4 b'8 b'
}

Alas, b2 and b4 are now undistinguishable. How do you want to handle this?

Cheers,
  Harm

Am So., 21. Nov. 2021 um 15:51 Uhr schrieb Leonid Hrabovsky
<lhrabovsky@gmail.com>:
>
> Great, Thomas, I am very grateful - now I have the proper notehead for the 
> score of my large old composition that remained in manuscript 50 years. But 
> it is a bit too big - is there any way to reduce it to the distance between 
> two staff lines just to fit between them?
>
> Best wishes,
>
> Леонід - Leonid
>
>
>
> On Sun, Nov 21, 2021 at 5:27 AM Thomas Morley <thomasmorley65@gmail.com> 
> wrote:
>>
>> Am So., 21. Nov. 2021 um 01:58 Uhr schrieb Leonid Hrabovsky
>> <lhrabovsky@gmail.com>:
>> >
>> > Hi Thomas, here is my attempt to make a new notehead out of the grob 
>> > neomensural94 -
>> >
>> > \version "2.20.0"
>> > \language "english"
>> >
>> >    \score {
>> >      \new Staff {
>> >
>> >     MyNoteHeads = \override NoteHead.stencil = \musiglyph 
>> > "timesig.neomensural94"
>> >
>> >     \relative { a'4 g f e | fs gs a2 }
>> >
>> > myNoteHeads = \override NoteHead.stencil = \timesig.neomensural94
>> >
>> > % or maybe more correct code - - -
>> >
>> > \version "2.20.0"
>> > \language "english"
>> >
>> >    \score {
>> >      \new Staff {
>> >
>> >     MyNoteHeads = \override NoteHead.stencil = \musiglyph 
>> > "timesig.neomensural94"
>> >
>> >     \relative { a'4 g f e | fs gs a2 }
>> >
>> > }
>> > }
>> >
>> > What was wrong in that code?
>> >
>> > Леонід - Leonid
>>
>> Please always cc the list.
>>
>> Well, what's wrong?
>>
>> You need to do such definitions outside of the music at toplevel
>> niveau and call it _in_ music, i.e.
>>   myDef = ...
>>   { \myDef ... }
>>
>> If you want some text (i.e. \markup) replacing a stencil, do
>>   \override NoteHead.stencil = #ly:text-interface::print
>>   \override NoteHead.text = \markup ...
>> As explained here:
>> http://lilypond.org/doc/v2.22/Documentation/notation/modifying-stencils
>>
>> \musicglyph was misspelled.
>>
>> This works:
>>
>> MyNoteHeads = {
>>   \override NoteHead.stencil = #ly:text-interface::print
>>   \override NoteHead.text = \markup \musicglyph "timesig.neomensural94"
>> }
>>
>> \new Staff \relative { \MyNoteHeads a'4 g f e | fis gis a2 }
>>
>>
>> NB The above explanations are simplified, disregarding many other
>> possibilities and cases.
>>
>>
>> Cheers,
>>   Harm