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## Beam-patch - first try

**From**: |
Rune Zedeler |

**Subject**: |
Beam-patch - first try |

**Date**: |
Sat, 22 Sep 2001 02:52:30 +0200 |

Now I have the first version of the beaming patch.
My idea is to split the beamed section at the middle of duration if this
was possible.
This fixes
\time 6/8 [ c16 c c c8 c16 ]
and it also fixes the earlier mentioned
[\times 2/3 {c16 c c} c8] [\times 2/3 {c16 c c} c8]
(see
http://mail.gnu.org/pipermail/bug-gnu-music/2001-February/000148.html )
I haven't found any negative side-effects yet, but I haven't done any
heavy testing, so please test it and tell if it works.
The bad thing is the way I find the duration of the beam:
Moment duration = infos_[infos_.size()-1].start_mom_ -
infos_[0].start_mom_
+ Rational(1,4<<(infos_[infos_.size()-1].beams_i_drul_[LEFT]));
the 2nd line calculates the length of the last note based on the number
of beams on it. This is ugly, and there must be a better way to do this.
-Rune

--- lilypond-1.5.11/lily/beaming-info.cc.bak Sat Sep 22 00:45:31 2001
+++ lilypond-1.5.11/lily/beaming-info.cc Sat Sep 22 02:51:10 2001
@@ -24,12 +24,17 @@
}
const int infinity_i = INT_MAX; // guh.
+const int min_infinity_i = INT_MIN;
int
Beaming_info_list::min_denominator_index () const
{
int minden = infinity_i;
int minidx = -1;
+ /* YIKES!!! FIXME!!! SLAM!!! There must be a simpler and cleaner way to get
+ the duration of the beaming */
+ Moment duration = infos_[infos_.size()-1].start_mom_ - infos_[0].start_mom_
+ + Rational(1,4<<(infos_[infos_.size()-1].beams_i_drul_[LEFT]));
for (int i=1; i < infos_.size (); i++)
{
@@ -38,6 +43,11 @@
minidx = i;
minden = infos_[i].start_mom_.den ();
}
+ if (duration == ((infos_[i].start_mom_ -
infos_[0].start_mom_)*Rational(2) ))
+ {
+ minidx = i;
+ minden = min_infinity_i;
+ }
}
return minidx;

**Beam-patch - first try**,
*Rune Zedeler* **<=**