Re: SPONSORSHIP OFFER: centering a context between two other contexts (followup)

[Kieren MacMillan]

Hey all,

After thinking about it a bit, it seems to me that the current  
(*wicked awesome*, BTW) skyline coding could come to the rescue  
here...  =)

IMO, the ultimate algorithm for a piano-with-centered-dynamics  
situation might be as follows:

1. At any given point requiring a dynamic/hairpin, the grob-box  
containing the dynamic/hairpin is inserted between the skylines of  
the two surrounding Staff contexts.

2a. If this insertion can be done without the dynamic/hairpin box  
touching either skyline, the two Staff contexts remain unaffected.
2b. If the dynamic/hairpin grob-box touches either skyline, the lower  
Staff context is pushed down until the grob-box no longer (or just  
barely) touches the skylines.
[In other words, this context would be "super-skylined" or "flatline- 
able", with a minimum height of 0 where a Staff context has a minimum  
height of 4.]

3a. The dynamic/hairpin grob-box #'padding would be user-settable.
3b. There would also be a setting (default = ##f) which would force  
all dynamic grob-boxes within a single system to be aligned on the  
same vertical axis.

How difficult (read: expen$ive) would it be to add such a feature?

Thanks,
Kieren.