Re: Skylines and custom MMR range engraver

[Malte Meyn]

Am 06.10.2017 um 16:47 schrieb Pierre-Luc Gauthier:
> I suspect that, to overcome this limitation and thus being able to
> print*bellow*  the staff, _this line was added to make the object have
> no dimensions at all thus no collision.
>
> \with-dimensions #empty-interval #empty-interval

I think you’re right.

> The problem with this is, as shown in the image attached, that there
> is no skylines around the grob an thus collisions happens in the score
> with adjacent systems.
>
> I suspect the way to go with this is to make this markup go bellow the
> staff in the first place.

That’s not so easy because the markup is part of the 
MultiMeasureRestNumber grob and *one* grob cannot have *two* 
directions/locations ;)

> How would you go about doing that?

I tried some things and finally found a possible solution:
        \override MultiMeasureRestNumber.Y-offset = 2.45
The 2.45 seems to be the default value which can be found using the 
following code without any special engravers:

\relative c' {
  \override MultiMeasureRestNumber.after-line-breaking =
  #(lambda (grob)
     (display (ly:grob-property grob 'Y-offset))
     (newline))
  \compressFullBarRests
  R1*7
}