Doc-de: fix compiling error

[lilypond.git] / lily / rest-collision.cc

diff --git a/lily/rest-collision.cc b/lily/rest-collision.cc
index fc8a4b401d2880347f687c2b908d62f0d5140f3b..e2b0db5ef2352e6e6d002259d90386bb97579bee 100644 (file)
--- a/lily/rest-collision.cc
+++ b/lily/rest-collision.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 1997--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -146,13 +146,10 @@ Rest_collision::calc_positioning_done (SCM smob)
             rests[d]->warning (_ ("cannot resolve rest collision: rest direction not set"));
         }
 
-      Direction d = LEFT;
-      do
+      for (LEFT_and_RIGHT (d))
         vector_sort (ordered_rests[d], rest_shift_less);
-      while (flip (&d) != LEFT)
-        ;
 
-      do
+      for (LEFT_and_RIGHT (d))
         {
           if (ordered_rests[d].size () < 1)
             {
@@ -162,7 +159,6 @@ Rest_collision::calc_positioning_done (SCM smob)
               return SCM_BOOL_T;
             }
         }
-      while (flip (&d) != LEFT);
 
       Grob *common = common_refpoint_of_array (ordered_rests[DOWN], me, Y_AXIS);
       common = common_refpoint_of_array (ordered_rests[UP], common, Y_AXIS);
@@ -182,7 +178,7 @@ Rest_collision::calc_positioning_done (SCM smob)
                              2 * int (ceil (diff)));
         }
 
-      do
+      for (LEFT_and_RIGHT (d))
         {
           for (vsize i = ordered_rests[d].size () - 1; i-- > 0;)
             {
@@ -194,7 +190,6 @@ Rest_collision::calc_positioning_done (SCM smob)
                 Rest::translate (ordered_rests[d][i], d * (int) ceil (diff) * 2);
             }
         }
-      while (flip (&d) != LEFT);
     }
   else
     {
@@ -207,11 +202,12 @@ Rest_collision::calc_positioning_done (SCM smob)
       for (vsize i = 0; i < rests.size (); i++)
         {
           Grob *rcol = rests[i];
-          Direction dir = Note_column::dir (rcol);
+          Grob *rest = Note_column::get_rest (rcol);
+
+          Direction dir = get_grob_direction (rest);
           if (!dir)
-            continue;
+            dir = Note_column::dir (rcol);
 
-          Grob *rest = Note_column::get_rest (rcol);
           // Do not compute a translation for pre-positioned rests,
           //  nor count them for the "too many colliding rests" warning
           if (scm_is_number (rest->get_property ("staff-position")))
@@ -253,19 +249,14 @@ Rest_collision::calc_positioning_done (SCM smob)
           Real y = dir * max (0.0,
                               -dir * restdim[-dir] + dir * notedim[dir] + minimum_dist);
 
-          int stafflines = Staff_symbol_referencer::line_count (me);
-          if (!stafflines)
-            {
-              programming_error ("no staff line count");
-              stafflines = 5;
-            }
-
           // move discretely by half spaces.
           int discrete_y = dir * int (ceil (y / (0.5 * dir * staff_space)));
 
+          Interval staff_span = Staff_symbol_referencer::staff_span (rest);
+          staff_span.widen (1);
           // move by whole spaces inside the staff.
-          if (fabs (Staff_symbol_referencer::get_position (rest)
-                    + discrete_y) < stafflines + 1)
+          if (staff_span.contains
+              (Staff_symbol_referencer::get_position (rest) + discrete_y))
             {
               discrete_y = dir * int (ceil (dir * discrete_y / 2.0) * 2.0);
             }