/*
- drul-array.hh -- declare Drul_array
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--2004 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 DRUL_ARRAY_HH
#define DRUL_ARRAY_HH
#include "direction.hh"
#include "real.hh"
-#include <assert.h>
-
/**
- Left/right or Up/down arrays. Drul is nicer sounding than udlr
- */
+ Left/right or Up/down arrays. Drul is nicer sounding than udlr
+*/
template<class T>
struct Drul_array
{
T array_[2];
- T &elem (Direction d)
- {
- assert (d==1 || d== -1);
- return array_[ (d+1)/2];
-
- }
- T &operator[] (Direction d)
+ T &at (Direction d)
+ {
+ assert (d == 1 || d == -1);
+ return array_[ (d + 1) / 2];
+ }
+ T const &at (Direction d) const
{
- return elem (d);
+ assert (d == 1 || d == -1);
+ return array_[ (d + 1) / 2];
}
- T elem (Direction d) const
- {
- assert (d==1 || d== -1);
- return array_[ (d+1)/2];
- }
-
- T operator[] (Direction d) const
+ T &operator [] (Direction d)
{
- return elem (d);
+ return at (d);
+ }
+ T const &operator [] (Direction d) const
+ {
+ return at (d);
}
Drul_array ()
- {}
- Drul_array (T t1, T t2)
- {
- array_[0] = t1;
- array_[1] = t2;
- }
+ {
+ }
+ Drul_array (T const &t1, T const &t2)
+ {
+ set (t1, t2);
+ }
+ void set (T const &t1, T const &t2)
+ {
+ array_[0] = t1;
+ array_[1] = t2;
+ }
};
template<class T>
void
-scale_drul (Drul_array<T> * dr, T x)
+scale_drul (Drul_array<T> *dr, T x)
{
- dr->elem (LEFT) *= x;
- dr->elem (RIGHT) *= x;
+ dr->at (LEFT) *= x;
+ dr->at (RIGHT) *= x;
}
inline Real
linear_combination (Drul_array<Real> const &d, Real x)
{
- return ((1.0 - x) * Real (d.elem (LEFT)) + (x + 1.0) * Real (d.elem (RIGHT))) * 0.5;
+ return ((1.0 - x) * Real (d.at (LEFT))
+ + (x + 1.0) * Real (d.at (RIGHT))) * 0.5;
}
-#endif // DRUL_ARRAY_HH
+#endif /* DRUL_ARRAY_HH */