/*
- 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--2005 Han-Wen Nienhuys <hanwen@cs.uu.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
#define INTERVAL_TCC
#include <cassert>
-#include <cmath>
#include "interval.hh"
-#include "string.hh"
+#include "std-string.hh"
+
+// MacOS 10.3 problems:
+// #include <cmath>
+using namespace std;
template<class T>
int
-_Interval__compare (const Interval_t<T>&a, Interval_t<T> const &b)
+_Interval__compare (const Interval_t<T> &a, Interval_t<T> const &b)
{
- if (a.elem (LEFT) == b.elem (LEFT) && a.elem (RIGHT) == b.elem (RIGHT))
+ if (a.at (LEFT) == b.at (LEFT) && a.at (RIGHT) == b.at (RIGHT))
return 0;
- if (a.elem (LEFT) <= b.elem (LEFT) && a.elem (RIGHT) >= b.elem (RIGHT))
+ if (a.at (LEFT) <= b.at (LEFT) && a.at (RIGHT) >= b.at (RIGHT))
return 1;
- if (a.elem (LEFT) >= b.elem (LEFT) && a.elem (RIGHT) <= b.elem (RIGHT))
+ if (a.at (LEFT) >= b.at (LEFT) && a.at (RIGHT) <= b.at (RIGHT))
return -1;
return -2;
void
Interval_t<T>::set_empty ()
{
- elem_ref (LEFT) = (T) infinity ();
- elem_ref (RIGHT) = (T) -infinity ();
+ at (LEFT) = (T) infinity ();
+ at (RIGHT) = (T) - infinity ();
}
template<class T>
void
Interval_t<T>::set_full ()
{
- elem_ref (LEFT) = (T) -infinity ();
- elem_ref (RIGHT) = (T) infinity ();
+ at (LEFT) = (T) - infinity ();
+ at (RIGHT) = (T) infinity ();
}
template<class T>
T
Interval_t<T>::length () const
{
- if (elem (RIGHT) <= elem (LEFT))
+ if (at (RIGHT) <= at (LEFT))
return 0;
else
- return elem (RIGHT) - elem (LEFT);
+ return at (RIGHT) - at (LEFT);
}
template<class T>
T
Interval_t<T>::delta () const
{
- return elem (RIGHT) - elem (LEFT);
+ return at (RIGHT) - at (LEFT);
}
/* smallest Interval which includes *this and #h# */
void
Interval_t<T>::unite (Interval_t<T> h)
{
- elem_ref (LEFT) = h.elem (LEFT) <? elem (LEFT);
- elem_ref (RIGHT) = h.elem (RIGHT) >? elem (RIGHT);
+ at (LEFT) = min (h.at (LEFT), at (LEFT));
+ 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>::intersect (Interval_t<T> h)
+Interval_t<T>::unite_disjoint (Interval_t<T> h, T padding, Direction d)
{
-#if defined (__GNUG__) && !defined (__STRICT_ANSI__)
- elem_ref (LEFT) = h.elem (LEFT) >? elem (LEFT);
- elem_ref (RIGHT) = h.elem (RIGHT) <? elem (RIGHT);
-#else
- elem_ref (LEFT) = max (h.elem (LEFT), elem (LEFT));
- elem_ref (RIGHT) = min (h.elem (RIGHT), elem (RIGHT));
-#endif
+ T dir = d;
+ T translation = dir * (at (d) + dir * padding - h.at (-d));
+ if (translation > (T) 0)
+ h.translate (translation);
+ unite (h);
}
-#if 0 //this is called intersection
template<class T>
Interval_t<T>
-intersect (Interval_t<T> x, Interval_t<T> const &y)
+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)
{
- x.intersect (y);
- return x;
+ at (LEFT) = max (h.at (LEFT), at (LEFT));
+ at (RIGHT) = min (h.at (RIGHT), at (RIGHT));
}
-#endif
template<class T>
-String
+string
Interval_t<T>::to_string () const
{
if (is_empty ())
return "[empty]";
- String s ("[");
+ string s ("[");
- return (s + T_to_string (elem (LEFT)) + String (",")
- + T_to_string (elem (RIGHT)) + String ("]"));
+ return (s + T_to_string (at (LEFT)) + string (",")
+ + T_to_string (at (RIGHT)) + string ("]"));
}
template<class T>
bool
-Interval_t<T>::contains (T r)
+Interval_t<T>::contains (T r) const
{
- return r >= elem (LEFT) && r <= elem (RIGHT);
+ return r >= at (LEFT) && r <= at (RIGHT);
}
-#define INTERVAL__INSTANTIATE(T) struct Interval_t<T>; \
- template int Interval__compare (const Interval_t<T>&, Interval_t<T> const &)
+#define INTERVAL__INSTANTIATE(T) struct Interval_t<T>; \
+ template int Interval__compare (const Interval_t<T> &, Interval_t<T> const &)
#endif // INTERVAL_TCC