/* * Copyright (C) 2021 Paul Davis * * This program 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 2 of the License, or * (at your option) any later version. * * This program 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 this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "ardour/key.h" MusicalKey::~MusicalKey () { } void MusicalKey::set_root (int r) { /* force root into lowest octave. Yes, 12 tone for now */ _root = (r % 12); } bool MusicalKey::in_key (int note) const { /* currently 12 tone based */ note = note % 12; /* we should speed this us. Probably a bitset */ if (note == _root) { return true; } for (std::vector::const_iterator i = steps.begin(); i != steps.end(); ++i) { int ii = (int) ((*i) * 2.0); if (note == _root + ii) { return true; } } return false; }