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Re: [Lilypond-auto] Issue 2801 in lilypond: Patch: Approximates cross-st


From: lilypond
Subject: Re: [Lilypond-auto] Issue 2801 in lilypond: Patch: Approximates cross-staff slurs in VerticalAxisGroup vertical-skylines.
Date: Sun, 02 Sep 2012 11:11:04 +0000

Updates:
        Labels: -Patch-review Patch-new

Comment #2 on issue 2801 by address@hidden: Patch: Approximates cross-staff slurs in VerticalAxisGroup vertical-skylines.
http://code.google.com/p/lilypond/issues/detail?id=2801#c2

Approximates cross-staff slurs in VerticalAxisGroup vertical-skylines.

The approximation is almost always an overshoot for the time being.
A more robust strategy would be to create SlurStubs for every
VerticalAxisGroup on which the cross-staff slur encompassed a
note column. Then, the skyline added would be the union of
all these skylines where the top skyline acted as a top bound
and the low skyline acted as a lower bound, so if intermediary
skylines went over these bounds, those parts of the skyline would
be thrown out. This can be done in a separate commit: it'd require
making a Skyline::crop function that crops one skyline by
another and would require creating multiple SlurStubs in the
engraver as well as figuring out the right amount to shift
them for each vertical axis group.

http://codereview.appspot.com/6498077




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