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#ifndef RESOURCEUNITSPECIES_H

#define RESOURCEUNITSPECIES_H

#include "production3pg.h"

#include "standstatistics.h"

#include "speciesresponse.h"

#include "establishment.h"

#include "sapling.h"

#include "grid.h"

#include "snag.h"

class Species;

class ResourceUnit;

class ResourceUnitSpecies

{

public:

    ResourceUnitSpecies() : mLAIfactor(0.), mSpecies(0), mRU(0) {}

    ~ResourceUnitSpecies();

    void setup(Species *species, ResourceUnit *ru);

    // access

    const SpeciesResponse *speciesResponse() const { return &mResponse; }

    const Species *species() const { return mSpecies; } ///< return pointer to species

    const ResourceUnit *ru() const { return mRU; } ///< return pointer to resource unit

    const Production3PG &prod3PG() const { return m3PG; } ///< the 3pg production model of this speies x resourceunit

    const Sapling &sapling() const { return mSapling; } ///< sapling growth submodel

    Sapling &changeSapling() { return mSapling; } ///< sapling growth submodel (non-const access)

    StandStatistics &statistics() { return mStatistics; } ///< statistics of this species on the resourceunit

    StandStatistics &statisticsDead() { return mStatisticsDead; } ///< statistics of died trees

    StandStatistics &statisticsMgmt() { return mStatisticsMgmt; } ///< statistics of removed trees

    const StandStatistics &constStatistics() const { return mStatistics; } ///< const accessor

    const StandStatistics &constStatisticsDead() const { return mStatisticsDead; } ///< const accessor

    const StandStatistics &constStatisticsMgmt() const { return mStatisticsMgmt; } ///< const accessor

   // actions

    void updateGWL();

    double removedVolume() const { return mRemovedGrowth; } ///< sum of volume with was remvoved because of death/management (m3/ha)

    /// relative fraction of LAI of this species (0..1) (if total LAI on resource unit is >= 1, then the sum of all LAIfactors of all species = 1)

    double LAIfactor() const { return mLAIfactor; }

    void setLAIfactor(const double newLAIfraction) { mLAIfactor=newLAIfraction; if (mLAIfactor<0 || mLAIfactor>1.00001) qDebug() << "invalid LAIfactor"<<mLAIfactor; }

    // properties

    double leafArea() const; ///< total leaf area of the species on the RU (m2).

    // action

    void calculate(const bool fromEstablishment=false); ///< calculate response for species, calculate actual 3PG production

    // establishment, sapling growth

    void calculateEstablishment(); ///< perform establishment calculations

    void calclulateSaplingGrowth(); ///< growth of saplings

    int addSapling(const QPoint &position, const float height=0.05f) { return mSapling.addSapling(position, height); } ///< add a saplings on a given position

    void clearSaplings(const QPoint &position) { mSapling.clearSaplings(position);} ///< clear saplings on a given position (after recruitment)

    bool hasSaplingAt(const QPoint &position) const { return mSapling.hasSapling(position); } ///< return true if a sapling of the current speices is present at 'position'

    // visualization/graphical output

    void visualGrid(Grid<float> &grid) const;

private:

    ResourceUnitSpecies(const ResourceUnitSpecies &); // no copy

    ResourceUnitSpecies &operator=(const ResourceUnitSpecies &); // no copy

    double mLAIfactor; ///< relative amount of this species' LAI on this resource unit (0..1). Is calculated once a year.

    double mRemovedGrowth; ///< m3 volume of trees removed/managed (to calculate GWL) (m3/ha)

    StandStatistics mStatistics; ///< statistics of a species on this resource unit

    StandStatistics mStatisticsDead; ///< statistics of died trees (this year) of a species on this resource unit

    StandStatistics mStatisticsMgmt; ///< statistics of removed trees (this year) of a species on this resource unit

    Production3PG m3PG; ///< NPP prodution unit of this species

    SpeciesResponse mResponse; ///< calculation and storage of species specific respones on this resource unit

    Establishment mEstablishment; ///< establishment for seedlings and sapling growth

    Sapling mSapling; ///< saplings storage/growth

    Species *mSpecies; ///< link to speices

    ResourceUnit *mRU; ///< link to resource unit

    int mLastYear;

};

#endif // RESSOURCEUNITSPECIES_H