X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fspacing-options.cc;h=dbf0587acdd7e6e98ae9110516d07a7b8cee222d;hb=b872748c6aa8bb721ced458691b38ac2fac5dfc8;hp=a3e512525b5c8352a825e08f81f2fc95cfbedcf5;hpb=7a32d3103c22d916cec37d1d7bb7e5cd4dc0463a;p=lilypond.git

diff --git a/lily/spacing-options.cc b/lily/spacing-options.cc
index a3e512525b..dbf0587acd 100644
--- a/lily/spacing-options.cc
+++ b/lily/spacing-options.cc
@@ -1,10 +1,21 @@
 /*
-  spacing-options.cc -- implement Spacing_options 
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 2006--2015 Han-Wen Nienhuys <hanwen@lilypond.org>
 
-  (c) 2006--2007 Han-Wen Nienhuys <hanwen@lilypond.org>
 
+  LilyPond is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "spacing-options.hh"
@@ -27,9 +38,8 @@ Spacing_options::init_from_grob (Grob *me)
     = to_boolean (me->get_property ("strict-grace-spacing"));
   shortest_duration_space_ = robust_scm2double (me->get_property ("shortest-duration-space"), 1);
 
-
   Moment shortest_dur = robust_scm2moment (me->get_property ("common-shortest-duration"),
-					   Moment (Rational (1,8), Rational (1,16)));
+                                           Moment (Rational (1, 8), Rational (1, 16)));
 
   if (shortest_dur.main_part_)
     global_shortest_ = shortest_dur.main_part_;
@@ -50,49 +60,44 @@ Spacing_options::Spacing_options ()
   global_shortest_ = Rational (1, 8);
 }
 
-
-
 /*
   Get the measure wide ant for arithmetic spacing.
 */
 Real
 Spacing_options::get_duration_space (Rational d) const
 {
-  Real k = shortest_duration_space_;
+  Real ratio = d / global_shortest_;
 
-  if (d < global_shortest_)
+  if (ratio < 1.0)
     {
       /*
-	We don't space really short notes using the log of the
-	duration, since it would disproportionally stretches the long
-	notes in a piece. In stead, we use geometric spacing with constant 0.5
-	(i.e. linear.)
+        We don't space really short notes using the log of the
+        duration, since it would disproportionally stretches the long
+        notes in a piece. In stead, we use geometric spacing with constant 0.5
+        (i.e. linear.)
 
-	This should probably be tunable, to use other base numbers.
+        This should probably be tunable, to use other base numbers.
 
-	In Mozart hrn3 by EB., we have 8th note = 3.9 mm (total), 16th note =
-	3.6 mm (total).  head-width = 2.4, so we 1.2mm for 16th, 1.5
-	mm for 8th. (white space), suggesting that we use
+        In Mozart hrn3 by EB., we have 8th note = 3.9 mm (total), 16th note =
+        3.6 mm (total).  head-width = 2.4, so we 1.2mm for 16th, 1.5
+        mm for 8th. (white space), suggesting that we use
 
-	(1.2 / 1.5)^{-log2(duration ratio)}
+        (1.2 / 1.5)^{-log2(duration ratio)}
 
 
       */
-      Rational ratio = d / global_shortest_;
 
-      return ((k - 1) + double (ratio)) * increment_;
+      return (shortest_duration_space_ + ratio - 1) * increment_;
     }
   else
     {
       /*
-	John S. Gourlay. ``Spacing a Line of Music, '' Technical
-	Report OSU-CISRC-10/87-TR35, Department of Computer and
-	Information Science, The Ohio State University, 1987.
+        John S. Gourlay. ``Spacing a Line of Music, '' Technical
+        Report OSU-CISRC-10/87-TR35, Department of Computer and
+        Information Science, The Ohio State University, 1987.
       */
-      Real log = log_2 (global_shortest_);
-      k -= log;
 
-      return (log_2 (d) + k) * increment_;
+      return (shortest_duration_space_ + log_2 (ratio)) * increment_;
     }
 }