AREnvelopeFollowerSquareLaw.h

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/*
 *  File:       AREnveloperFollowerSquareLaw.h
 *
 *  Created:    17/11/2020
 *
 *  This file is part of WECore.
 *
 *  WECore 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.
 *
 *  WECore 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 WECore.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#pragma once
 
#include "General/CoreMath.h"
#include "AREnvelopeFollowerParameters.h"
#include "AREnvelopeFollowerBase.h"
 
namespace WECore::AREnv {
    class AREnvelopeFollowerSquareLaw : public AREnvelopeFollowerBase {
    public:
 
        AREnvelopeFollowerSquareLaw() = default;
        virtual ~AREnvelopeFollowerSquareLaw() override = default;
 
        virtual double _envGetNextOutputImpl(double inSample) override {
            const double tmp = inSample * inSample;
 
            if (tmp > _envVal)
            {
                _envVal = _attackCoef * (_envVal - tmp) + tmp;
            }
            else
            {
                _envVal = _releaseCoef * (_envVal - tmp) + tmp;
            }
 
            return std::sqrt(_envVal);
        }
    };
}