* lily/beam.cc (least_squares): Add comment.

[lilypond.git] / lily / beam.cc

diff --git a/lily/beam.cc b/lily/beam.cc
index 3e9c31f66cb407a4c840703e93a10f0d291f6f4d..5f19968e65f345140df834d6acbd2dda5989aab3 100644 (file)
--- a/lily/beam.cc
+++ b/lily/beam.cc
@@ -819,23 +819,18 @@ Beam::least_squares (SCM smob)
       Interval chord (Stem::chord_start_y (first_visible_stem (me)),
                      Stem::chord_start_y (last_visible_stem (me)));
 
+      /* Simple beams (2 stems) on middle line should be allowed to be
+        slightly sloped.
+        
+        However, if both stems reach middle line,
+        ideal[LEFT] == ideal[RIGHT] and ideal.delta () == 0.
 
-      /*
-       TODO -- use scoring for this.
-
-       complicated, because we take stem-info.ideal for determining
-       beam slopes.
-       */
-      /* Make simple beam on middle line have small tilt */
+        For that case, we apply artificial slope */
       if (!ideal[LEFT] && chord.delta () && count == 2)
        {
-
-         /*
-           FIXME. -> UP
-         */
+         /* FIXME. -> UP */
          Direction d = (Direction) (sign (chord.delta ()) * UP);
          pos[d] = gh_scm2double (me->get_grob_property ("thickness")) / 2;
-         //                * dir;
          pos[-d] = - pos[d];
        }
       else