/*
- 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) 1996,1997 Han-Wen Nienhuys <hanwen@stack.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 <assert.h>
-#include <math.h>
+#include <cassert>
+
#include "interval.hh"
-#include "string.hh"
-#include "flower-debug.hh"
+#include "std-string.hh"
-template<class T>
-void
-Interval_t<T>::print () const
-{
- fdebug << str ();
-}
+// 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.left == b.left && a.right == b.right)
- return 0;
-
- if (a.left <= b.left && a.right >= b.right)
- return 1;
+ if (a.at (LEFT) == b.at (LEFT) && a.at (RIGHT) == b.at (RIGHT))
+ return 0;
+
+ if (a.at (LEFT) <= b.at (LEFT) && a.at (RIGHT) >= b.at (RIGHT))
+ return 1;
- if (a.left >= b.left && a.right <= b.right)
- return -1;
+ if (a.at (LEFT) >= b.at (LEFT) && a.at (RIGHT) <= b.at (RIGHT))
+ return -1;
return -2;
}
template<class T>
-bool
-Interval_t<T>::contains_b (Interval_t<T> const& a) const
+bool
+Interval_t<T>::superset (Interval_t<T> const &a) const
{
- int c_i= _Interval__compare (*this, a);
+ int c_i = _Interval__compare (*this, a);
if (c_i == -2)
- return false;
+ return false;
return c_i >= 0;
}
template<class T>
int
-Interval__compare (const Interval_t<T>&a,Interval_t<T> const&b)
+Interval__compare (Interval_t<T> const &a, Interval_t<T> const &b)
{
- int i = _Interval__compare (a,b);
+ int i = _Interval__compare (a, b);
if (i < -1)
- assert (false);
+ assert (false);
return i;
}
template<class T>
void
-Interval_t<T>::set_empty()
+Interval_t<T>::set_empty ()
+{
+ at (LEFT) = (T) infinity ();
+ at (RIGHT) = (T) - infinity ();
+}
+
+template<class T>
+void
+Interval_t<T>::set_full ()
{
- left = (T) infinity();
- right = (T) -infinity();
+ at (LEFT) = (T) - infinity ();
+ at (RIGHT) = (T) infinity ();
}
template<class T>
T
-Interval_t<T>::length() const
+Interval_t<T>::length () const
{
- if (right < left)
+ if (at (RIGHT) <= at (LEFT))
return 0;
- else
- return right-left;
+ else
+ return at (RIGHT) - at (LEFT);
}
+template<class T>
+T
+Interval_t<T>::delta () const
+{
+ return at (RIGHT) - at (LEFT);
+}
+
+/* smallest Interval which includes *this and #h# */
template<class T>
void
Interval_t<T>::unite (Interval_t<T> h)
{
- if (h.left<left)
- left = h.left;
- if (h.right>right)
- right = h.right;
+ at (LEFT) = min (h.at (LEFT), at (LEFT));
+ at (RIGHT) = max (h.at (RIGHT), at (RIGHT));
}
-/**
- smallest Interval which includes *this and #h#
- */
-
+/* 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__)
- left = h.left >? left;
- right = h.right <?right;
-#else
- left = max (h.left, left);
- right = min (h.right, right);
-#endif
+ 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>
-intersect (Interval_t<T> x, Interval_t<T> const &y)
+Interval_t<T>::union_disjoint (Interval_t<T> h, T padding, Direction d) const
{
- x.intersect (y);
- return x;
+ Interval_t<T> iv = *this;
+ iv.unite_disjoint (h, padding, d);
+ return iv;
}
template<class T>
-String
-Interval_t<T>::str() const
+void
+Interval_t<T>::intersect (Interval_t<T> h)
{
- if (empty_b())
- return "[empty]";
- String s ("[");
-
- return s + T_to_str (left) + String ("," ) + T_to_str (right ) + String ("]" );
+ at (LEFT) = max (h.at (LEFT), at (LEFT));
+ at (RIGHT) = min (h.at (RIGHT), at (RIGHT));
}
template<class T>
-bool
-Interval_t<T>::elt_b (T r)
+string
+Interval_t<T>::to_string () const
{
- return r >= left && r <= right;
+ if (is_empty ())
+ return "[empty]";
+ string s ("[");
+
+ return (s + T_to_string (at (LEFT)) + string (",")
+ + T_to_string (at (RIGHT)) + string ("]"));
}
+template<class T>
+bool
+Interval_t<T>::contains (T r) const
+{
+ 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
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