Re: Overlay "ossia" voice

[Urs Liska]

Hi Mark,

Am 04.04.19 um 20:35 schrieb Mark Knoop:
> I'm trying to create something a bit like an ossia voice which should be 
> overlaid on top of the principal voice, but without affecting the layout of 
> each; i.e. ignoring all collisions.
This is great and may be an inspiration for me to handle my request from 
a few weeks ago: 
https://lists.gnu.org/archive/html/lilypond-user/2019-03/msg00389.html
> In the following example, ideally the Dots and Ties on the Gs in the first line 
> should have the same positioning as on the second.
>
> It's mostly working, except for the Dots which don't seem to have an equivalent 
> property to NoteColumn.ignore-collision. Any thoughts on this?


I'm not sure this might work at all since (like with the noteheads and 
the stems) through the \magnify the horizontal extent of all objects is 
different. I think what you'd basically have to do is making the 
secondary dots transparent (as you do in some instances).

What I would go after is a music function that detects another note head 
in the same NoteColumn at the same staff-position and if it finds one 
makes NoteHead, Stem, Flag, Dots (and more?) transparent.

I'd be interested in further results!

HTH
Urs