production3pg.h

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/********************************************************************************************
**    iLand - an individual based forest landscape and disturbance model
**    http://iland-model.org
**    Copyright (C) 2009-  Werner Rammer, Rupert Seidl
**
**    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 PRODUCTION3PG_H
#define PRODUCTION3PG_H
 
class SpeciesResponse;
class ProductionOut;
class Production3PG
{
public:
    Production3PG();
    void setResponse(const SpeciesResponse *response) { mResponse=response;}
    double calculate(); 
    void clear(); 
    double rootFraction() const { return mRootFraction; } 
    double GPPperArea() const { return mGPPperArea; } 
    double fEnvYear() const { return mEnvYear; } 
private:
    inline double calculateUtilizablePAR(const int month) const;
    inline double calculateEpsilon(const int month) const;
    inline double abovegroundFraction() const; 
    const SpeciesResponse *mResponse; 
    double mUPAR[12]; 
    double mGPP[12]; 
    double mRootFraction; 
    double mGPPperArea; 
    double mEnvYear; 
 
    friend class ProductionOut;
};
 
#endif // PRODUCTION3PG_H