X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=flower%2Finclude%2Finterval.tcc;h=72be6e81e92161984a74cfb6128902bb3d2ade31;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=3f5abc8b47945de2d3063b7e3dfbbb9700b9993e;hpb=a276a19dc6bd57832db3107f2f2cbb04cb4677b6;p=lilypond.git

diff --git a/flower/include/interval.tcc b/flower/include/interval.tcc
index 3f5abc8b47..72be6e81e9 100644
--- a/flower/include/interval.tcc
+++ b/flower/include/interval.tcc
@@ -1,9 +1,20 @@
 /*
-  interval.tcc -- implement Interval_t
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the Flower Library
+  Copyright (C) 1996--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
-  (c) 1996--2007 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
+  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/>.
 */
 
 #ifndef INTERVAL_TCC
@@ -59,14 +70,14 @@ void
 Interval_t<T>::set_empty ()
 {
   at (LEFT) = (T) infinity ();
-  at (RIGHT) = (T) -infinity ();
+  at (RIGHT) = (T) - infinity ();
 }
 
 template<class T>
 void
 Interval_t<T>::set_full ()
 {
-  at (LEFT) = (T) -infinity ();
+  at (LEFT) = (T) - infinity ();
   at (RIGHT) = (T) infinity ();
 }
 
@@ -96,6 +107,31 @@ Interval_t<T>::unite (Interval_t<T> h)
   at (RIGHT) = max (h.at (RIGHT), at (RIGHT));
 }
 
+/* Unites h and this interval, but in such a way
+   that h will lie in a particular direction from this
+   interval, with a minimum amount of space in between.
+   (That is, h will be translated before we unite, if
+   that is necessary to prevent overlap. */
+template<class T>
+void
+Interval_t<T>::unite_disjoint (Interval_t<T> h, T padding, Direction d)
+{
+  T dir = d;
+  T translation = dir * (at (d) + dir * padding - h.at (-d));
+  if (translation > (T) 0)
+    h.translate (translation);
+  unite (h);
+}
+
+template<class T>
+Interval_t<T>
+Interval_t<T>::union_disjoint (Interval_t<T> h, T padding, Direction d) const
+{
+  Interval_t<T> iv = *this;
+  iv.unite_disjoint (h, padding, d);
+  return iv;
+}
+
 template<class T>
 void
 Interval_t<T>::intersect (Interval_t<T> h)
@@ -113,7 +149,7 @@ Interval_t<T>::to_string () const
   string s ("[");
 
   return (s + T_to_string (at (LEFT)) + string (",")
-	  + T_to_string (at (RIGHT)) + string ("]"));
+          + T_to_string (at (RIGHT)) + string ("]"));
 }
 
 template<class T>
@@ -123,7 +159,7 @@ Interval_t<T>::contains (T r) const
   return r >= at (LEFT) && r <= at (RIGHT);
 }
 
-#define INTERVAL__INSTANTIATE(T) struct Interval_t<T>;			\
+#define INTERVAL__INSTANTIATE(T) struct Interval_t<T>;                  \
   template int Interval__compare (const Interval_t<T> &, Interval_t<T> const &)
 
 #endif // INTERVAL_TCC