Re: Approximates cross-staff slurs in VerticalAxisGroup vertical-skylines. (issue 6498077)

[mtsolo]

On 2012/09/02 20:38:28, Keith wrote:
> On 2012/09/02 06:25:58, MikeSol wrote:

> > It's not a copy of the original slur because it is using
> > pure heights and offsets.

> I saw you interrogating SlurStub regarding its purity, but did not
notice that
> SlurStub took any different shape based on 'pure' estimates.

> The SlurStubs in the regtest were shaped just like the printed Slurs,
but now I
> see the difference in the Chopin prelude, with

>   \layout { \context { \Score
>     \override SlurStub #'color = #green
>     \override SlurStub #'transparent = ##f
>     \override Slur #'color = #darkgreen
>     \override PhrasingSlur #'color = #darkgreen }}

> The SlurStubs are not sufficiently accurate to help, and they cost me
time.

> Chopin op45:    patch           'skylines'      2.16
>      real       0m21.666s       0m16.245s       0m12.862s
>      user       0m20.814s       0m15.573s       0m12.232s
>      sys        0m0.240s        0m0.254s        0m0.217s

I'm working on a new version of the patch.  There is no way to improve
accuracy of the curve, but the Y-offset is often wrong and that can be
improved.

The time hike seems awfully expensive - there must be a way to optimize
it.  I'll post something that works when I have it and then we can
figure out how to optimize it.

http://codereview.appspot.com/6498077/