Re: changing alignment of augmentation dots across multiple voices in the same staff

[Carl Sorensen]

On 5/24/17 7:49 AM, "David Nalesnik" <address@hidden> wrote:

>On Tue, May 23, 2017 at 2:51 PM, Kieren MacMillan
><address@hidden> wrote:
>> Hi David,
>>
>>> I would say so.  However, the situation is more complicated:
>>
>> #ugh #IsntItAlways
>>
>>> [Simon:] maybe a context property to turn off alignment of dotted
>>>rests would be useful?
>>
>> That sounds like it might work!
>>
>
> I agree with the idea of a context property, but it would switch
>between the current default (alignment by Staff always) and a new
>default which respects Gould's recommendations, which apply to more
>than rests.  An alignment by voice would also be used if the dotted
>quarter rest in Kieren's image were replaced by a dotted note or
>notes.  Additionally, by Gould's recommendation, the dots should align
>in cases where the voices have single notes (as in my counterexample
>above).

This would not be a simple change.  The engraver creates a dot column; the
dot column has only a y location for each dot.  The x location is handled
by the collision resolution system.

Furthermore, the current approach (put the engraver in either the Voice or
Staff context) can't be switched at a given moment in time, IIUC.

Perhaps we move the dot column engraver to the Voice context, and then
have a Staff context property something like AlignAllDotColumns.  I don't
know such a property would be implemented, but it seems to have the
appropriate flexibility to allow us to set the behavior at any time.

Thanks,

Carl