Tuning.h

Go to the documentation of this file.

// Copyright (c) XJ Music Inc. (https://xjmusic.com) All Rights Reserved.
 
#ifndef XJMUSIC_MUSIC_TUNING_H
#define XJMUSIC_MUSIC_TUNING_H
 
#include <map>
#include <string>
#include <cmath>
 
#include "Note.h"
 
namespace XJ {
 
  class Tuning {
  private:
    double TWELFTH_ROOT_OF_TWO = std::pow(2.0, 1.0 / 12.0);
    double NATURAL_LOGARITHM_OF_TWELFTH_ROOT_OF_TWO = std::log(TWELFTH_ROOT_OF_TWO);
    float ROOT_PITCH_MINIMUM = 1.0;
    float ROOT_PITCH_MAXIMUM = 100000.0;
    int ROOT_OCTAVE_MINIMUM = 0;
    int ROOT_OCTAVE_MAXIMUM = 15;
    std::map <int, std::map<PitchClass, float>> _notePitches;
    std::map <float, int> _deltaFromRootPitch;
    std::map <float, Note> _pitchNotes;
 
  public:
    Note rootNote;
    float rootPitch;
 
    Tuning();
 
    Tuning(const Note &rootNote, const float &rootPitch);
 
    static Tuning atA4(float a4);
 
    static Tuning at(Note note, float pitch);
 
    float pitch(Note note);
 
    Note getTones(float pitch);
 
    int deltaFromRootPitch(float pitch);
 
    [[nodiscard]] float pitchAtDelta(int delta) const;
 
    void validate() const;
  };
 
}// namespace XJ
 
#endif //XJMUSIC_MUSIC_TUNING_H