MOLOSS Code

/**************************************************************************
   Copyright (C) 2019 Arnaud Champenois arthelion@free.fr

	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 3 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, see <http://www.gnu.org/licenses/>.
**************************************************************************/

#pragma once
#include "TimeVariant.h"

/*!
 * Class computing frequency given a note, a LFO and controller state 
 * 
 */
class Pitch : public TimeVariant
{
public:
	Pitch(const PitchParameters&pitchParam) :
		TimeVariant(pitchParam),mPitchParam(pitchParam) {}
	virtual ~Pitch() override;

	virtual void init(double sampleRate) override;

	/*!
	 * Returns current note frequency
	 * 
	 * \return Frequency in Hz
	 */
	double next() {
		double realNote = mCurrentPitch + nextCenteredLFO()+ nextCenteredADSR();

		return 440.0*pow(2.0, realNote*PITCH_NUM);
	}

	/*!
	 * Starts a note with a given velocity
	 * 
	 * \param note
	 * \param velocity
	 */
	 virtual void noteOn(int note) override;

	 void changeNote(int note);
	 
	 virtual void updateInternalValues(int controller=0) override;

private:
	static constexpr double PITCH_NUM = 1.0 / 12.0;

	// Parameters
	const PitchParameters&mPitchParam;

	// Current value
	double mCurrentPitch = 0.0;
};