X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fsemi-tie.cc;h=2d0c1133a879f9e769900c014c8ba1c62c7e7bcc;hb=90e4d7057f3857da049dfda3d130017d4719bd6b;hp=193008751433dcaf3f7a5f7d6827a0bec6e88669;hpb=832fcf965e4b64aa55ae5dbbf6b0d78e0f686dac;p=lilypond.git

diff --git a/lily/semi-tie.cc b/lily/semi-tie.cc
index 1930087514..2d0c1133a8 100644
--- a/lily/semi-tie.cc
+++ b/lily/semi-tie.cc
@@ -49,26 +49,29 @@ ADD_INTERFACE (Semi_tie,
                "head-direction "
                "note-head "
                "thickness "
+               "line-thickness "
               );
 
 MAKE_SCHEME_CALLBACK (Semi_tie, calc_control_points, 1)
 SCM
 Semi_tie::calc_control_points (SCM smob)
 {
-  Grob *me = unsmob<Grob> (smob);
+  Item *me = LY_ASSERT_SMOB(Item, smob, 1);
+
   (void) me->get_property ("direction");
 
-  if (Semi_tie_column::has_interface (me->get_parent (Y_AXIS)))
-    {
-      me->get_parent (Y_AXIS)->get_property ("positioning-done");
-    }
-  else
+  Grob *yparent = me->get_parent (Y_AXIS);
+  if (has_interface<Semi_tie_column> (yparent))
     {
-      programming_error ("lv tie without Semi_tie_column.  Killing lv tie.");
-      me->suicide ();
+      /* trigger positioning. */
+      yparent->get_property ("positioning-done");
+
+      return me->get_property_data ("control-points");
     }
 
-  return me->get_property_data ("control-points");
+  programming_error ("lv tie without Semi_tie_column.  Killing lv tie.");
+  me->suicide ();
+  return SCM_EOL;
 }
 
 int
@@ -87,13 +90,20 @@ bool
 Semi_tie::less (Grob *g1, Grob *g2)
 {
   Item *i1 = dynamic_cast<Item *> (g1);
+  if (!i1)
+    {
+      g1->programming_error ("grob is not a semi-tie");
+      return false;
+    }
+
   Item *i2 = dynamic_cast<Item *> (g2);
-  if (i1 && i2) {
-    return get_position (i1) < get_position (i2);
-  }
+  if (!i2)
+    {
+      g2->programming_error ("grob is not a semi-tie");
+      return true;
+    }
 
-  programming_error ("grob is not a semi-tie");
-  return false;
+  return get_position (i1) < get_position (i2);
 }
 
 Item *
@@ -101,10 +111,3 @@ Semi_tie::head (Item *me)
 {
   return unsmob<Item> (me->get_object ("note-head"));
 }
-
-Item *
-Semi_tie::head (Item *me, Direction d)
-{
-  SCM head_dir = me->get_property ("head-direction");
-  return (is_direction (head_dir) && (to_dir (head_dir) == d)) ? head (me) : 0;
-}