FreeAmplitude.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_FreeAmplitude_h
#define yap_FreeAmplitude_h

#include "fwd/FreeAmplitude.h"

#include "fwd/DecayChannel.h"
#include "fwd/Model.h"
#include "fwd/DataAccessor.h"
#include "fwd/ParticleCombination.h"
#include "fwd/SpinAmplitude.h"

#include "Parameter.h"

#include <complex>
#include <string>

namespace yap {

class FreeAmplitude : public ComplexParameter
{
public:

    FreeAmplitude(std::shared_ptr<DecayChannel> dc, std::shared_ptr<SpinAmplitude> sa,
                  int two_m, std::complex<double> a = 1);

    const std::shared_ptr<DecayChannel>& decayChannel() const
    { return DecayChannel_; }

    const std::shared_ptr<SpinAmplitude>& spinAmplitude() const
    { return SpinAmplitude_; }

    const int twoM() const
    { return TwoM_; }

    const ParticleCombinationSet& particleCombinations() const;
    
    const Model* model() const;

    using ComplexParameter::operator=;

private:

    std::shared_ptr<DecayChannel> DecayChannel_;

    std::shared_ptr<SpinAmplitude> SpinAmplitude_;

    int TwoM_;
};

std::string to_string(const FreeAmplitude& fa);

}

#endif