Reviewers: Graham Percival,
Description:
doc: changing example for overriding positions
example in LM 4.5.2 (fixing beam collision)
is outdated because beam collision has been
implemented, so there is nothing to fix.
Therefore I change the type of collision
to beam-tie collision.
Please review this at http://codereview.appspot.com/4607043/
Affected files:
M Documentation/learning/tweaks.itely
Index: Documentation/learning/tweaks.itely
diff --git a/Documentation/learning/tweaks.itely
b/Documentation/learning/tweaks.itely
index
97b2cadfd9744d9f432379e93338f9303349185e..d3c2ab156eb0d6baa5a0eaea39d43ef64f30fdfe
100644
--- a/Documentation/learning/tweaks.itely
+++ b/Documentation/learning/tweaks.itely
@@ -2793,42 +2793,53 @@ r4
\acciaccatura e8\( d8 c~ c d c d\)
@end lilypond
-Here's a further example taken from the opening of the left-hand
-staff of Chopin's Prelude Op 28 No. 2. We see that the beam
-collides with the upper notes:
+Here's a further example. We see that the beams
+collide with the ties:
@lilypond[quote,verbatim,fragment,ragged-right]
{
- \clef "bass"
- << { b,8 ais, b, g, } \\ { e,8 g e, g } >>
- << { b,8 ais, b, g, } \\ { e,8 g e, g } >>
+ \time 4/2
+ <<
+ { c'1 ~ c'2. e'8 f'}
+ \\
+ { e''8 e'' e'' e'' e'' e'' e'' e'' | f''2 g''}
+ >>
+ <<
+ { c'1 ~ c'2. e'8 f'}
+ \\
+ { e''8 e'' e'' e'' e'' e'' e'' e'' | f''2 g''}
+ >>
}
@end lilypond
@noindent
This can be resolved by manually moving both ends of the beam
-up from their position at 2 staff-spaces above the center line to,
-say, 3:
+up from their position at 1.81 staff-spaces below the center line to,
+say, 1:
@cindex Beam, example of overriding
@cindex positions property, example
@lilypond[quote,verbatim,fragment,ragged-right]
{
- \clef "bass"
+ \time 4/2
<<
- \override Beam #'positions = #'(3 . 3)
- { b,8 ais, b, g, }
- \\
- { e,8 g e, g }
+ { c'1 ~ c'2. e'8 f'}
+ \\
+ \override Beam #'positions = #'(-1 . -1)
+ { e''8 e'' e'' e'' e'' e'' e'' e'' | f''2 g''}
+ >>
+ <<
+ { c'1 ~ c'2. e'8 f'}
+ \\
+ { e''8 e'' e'' e'' e'' e'' e'' e'' | f''2 g''}
>>
- << { b,8 ais, b, g, } \\ { e,8 g e, g } >>
}
@end lilypond
@noindent
Note that the override continues to apply in the first voice of
-the second block of quavers, but not to any of the beams in the
+the second measure of quavers, but not to any of the beams in the
second voice.
@subheading force-hshift property
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