/*
- pitch.hh -- declare Pitch
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1998--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1998--2005 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 MUSICAL_PITCH_HH
-#define MUSICAL_PITCH_HH
+#ifndef PITCH_HH
+#define PITCH_HH
#include "lily-proto.hh"
#include "smobs.hh"
+#include "rational.hh"
-/** A "tonal" pitch. This is a pitch used in diatonal western music
- (24 quartertones in an octave), as opposed to a frequency in Hz or a
- integer number of semitones.
-
- Pitch is lexicographically ordered by (octave, notename,
- alteration).
-
-
- TODO:
+/*
+ A "tonal" pitch. This is a pitch used in diatonal western music
+ (24 quartertones in an octave), as opposed to a frequency in Hz or a
+ integer number of semitones.
- - add indeterminate octaves, so it can be used as a key in keySigature
+ Pitch is lexicographically ordered by (octave, notename, alteration).
*/
-class Pitch
-{
-private: // fixme
- /*
- TODO: use SCM
- */
- int notename_;
- int alteration_;
+class Pitch : public Simple_smob<Pitch>
+{
+public:
+ static SCM equal_p (SCM, SCM);
+ int print_smob (SCM, scm_print_state *) const;
+ SCM mark_smob () const;
+ static const char * const type_p_name_;
+private:
int octave_;
+ int notename_;
+ Rational alteration_;
+ Scale *scale_;
void transpose (Pitch);
void up_to (int);
void down_to (int);
- void normalise ();
+ void normalize_octave ();
+ void normalize_alteration ();
+ void normalize ();
public:
-
int get_octave () const;
int get_notename () const;
- int get_alteration () const;
+ Rational get_alteration () const;
- Pitch (int octave, int notename, int accidental);
+ Pitch (int octave, int notename, Rational accidental = 0);
Pitch ();
Pitch transposed (Pitch) const;
Pitch to_relative_octave (Pitch) const;
+ Pitch normalized () const;
+
static int compare (Pitch const &, Pitch const &);
int steps () const;
- int semitone_pitch () const;
- int quartertone_pitch () const;
- String to_string () const;
+ Rational tone_pitch () const;
+ int rounded_semitone_pitch () const;
+ int rounded_quartertone_pitch () const;
+ Pitch negated () const;
+ string to_string () const;
DECLARE_SCHEME_CALLBACK (less_p, (SCM a, SCM b));
- DECLARE_SIMPLE_SMOBS (Pitch,);
};
enum
- {
- DOUBLE_FLAT = -4,
- THREE_Q_FLAT,
- FLAT,
- SEMI_FLAT,
- NATURAL,
- SEMI_SHARP,
- SHARP,
- THREE_Q_SHARP,
- DOUBLE_SHARP,
- };
+{
+ DOUBLE_FLAT = -4,
+ THREE_Q_FLAT,
+ FLAT,
+ SEMI_FLAT,
+ NATURAL,
+ SEMI_SHARP,
+ SHARP,
+ THREE_Q_SHARP,
+ DOUBLE_SHARP,
+};
+
+extern Rational DOUBLE_FLAT_ALTERATION;
+extern Rational THREE_Q_FLAT_ALTERATION;
+extern Rational FLAT_ALTERATION;
+extern Rational SEMI_FLAT_ALTERATION;
+extern Rational NATURAL_ALTERATION;
+extern Rational SEMI_SHARP_ALTERATION;
+extern Rational SHARP_ALTERATION;
+extern Rational THREE_Q_SHARP_ALTERATION;
+extern Rational DOUBLE_SHARP_ALTERATION;
SCM ly_pitch_diff (SCM pitch, SCM root);
SCM ly_pitch_transpose (SCM p, SCM delta);
-DECLARE_UNSMOB (Pitch, pitch);
INSTANTIATE_COMPARE (Pitch, Pitch::compare);
-int compare (Array<Pitch> *, Array<Pitch> *);
extern SCM pitch_less_proc;
Pitch pitch_interval (Pitch const &from, Pitch const &to);
+extern SCM Pitch_type_p_proc;
-#endif /* MUSICAL_PITCH_HH */
-
+#endif /* PITCH_HH */