AmplitudeComponent.h

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/*  YAP - Yet another PWA toolkit
    Copyright 2015, Technische Universitaet Muenchen,
    Authors: Daniel Greenwald, Johannes Rauch

    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/>.
*/


#ifndef yap_AmplitudeComponent_h
#define yap_AmplitudeComponent_h

#include "fwd/AmplitudeComponent.h"
#include "fwd/DataPoint.h"
#include "fwd/Parameter.h"
#include "fwd/ParticleCombination.h"

#include "RecalculableDataAccessor.h"
#include "StaticDataAccessor.h"
#include "VariableStatus.h"

#include <complex>
#include <memory>

namespace yap {

class AmplitudeComponent
{
public:
    virtual const bool validFor(const std::shared_ptr<ParticleCombination>& pc) const = 0;

    virtual const std::complex<double> value(const DataPoint& d, const std::shared_ptr<ParticleCombination>& pc) const = 0;

    virtual const VariableStatus status() const = 0;
};

class StaticAmplitudeComponent : public AmplitudeComponent, public StaticDataAccessor
{
public:
    StaticAmplitudeComponent(Model& m, const ParticleCombinationEqualTo& equal)
        : AmplitudeComponent(), StaticDataAccessor(m, equal) {}

    virtual const bool validFor(const std::shared_ptr<ParticleCombination>& pc) const override
    { return symmetrizationIndices().find(pc) != symmetrizationIndices().end(); }

    virtual const VariableStatus status() const override
    { return VariableStatus::fixed; }
};    


class RecalculableAmplitudeComponent : public AmplitudeComponent, public RecalculableDataAccessor
{
public:
    explicit RecalculableAmplitudeComponent(const ParticleCombinationEqualTo& equal)
        : RecalculableDataAccessor(equal) {}

    virtual const bool validFor(const std::shared_ptr<ParticleCombination>& pc) const override
    { return symmetrizationIndices().find(pc) != symmetrizationIndices().end(); }

    virtual const VariableStatus status() const override;
};


}

#endif