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#ifndef ACTTHINNING_H
#define ACTTHINNING_H
#include "activity.h"
#include "grid.h"

namespace ABE {

class FMSTP; // forward
class FMStand; // forward
class FMTreeList; // forward


class ActThinning : public Activity
{
public:
    ActThinning(FMSTP *parent);
    enum ThinningType { Invalid, FromBelow, FromAbove, Custom, Selection};
    QString type() const;
    void setup(QJSValue value);
    bool evaluate(FMStand *stand);
    bool execute(FMStand *stand);
private:
    struct SCustomThinning {
        QString filter; ///< additional filter
        bool usePercentiles; ///< if true, classes relate to percentiles, if 'false' classes relate to relative dbh classes
        bool removal; ///< if true, classes define removals, if false trees should *stay* in the class
        bool relative; ///< if true, values are per cents, if false, values are absolute values per hectare
        double targetValue; ///< the number (per ha) that should be removed, see targetVariable
        bool targetRelative; ///< if true, the target variable is relative to the stock, if false it is absolute
        QString targetVariable; ///< target variable ('volume', 'basalArea', 'stems') / ha
        QVector<double> classValues; ///< class values (the number of values defines the number of classes)
        QVector<int> classPercentiles; ///< percentiles [0..100] for the classes (count = count(classValues) + 1
        double minDbh; ///< only trees with dbh > minDbh are considered (default: 0)
        int remainingStems; ///< minimum remaining stems/ha (>minDbh)
    };
    struct SSelectiveThinning {
        int N; // stems pro ha target
    };

    SSelectiveThinning mSelectiveThinning;

    QVector<SCustomThinning> mCustomThinnings;
    /// setup function for custom thinnings
    void setupCustom(QJSValue value);
    /// setup function for selective thinnings ("auslesedurchforstung")
    void setupSelective(QJSValue value);

    // setup a single thinning definition
    void setupSingleCustom(QJSValue value, SCustomThinning &custom);
    bool evaluateCustom(FMStand *stand, SCustomThinning &custom);
    int selectRandomTree(FMTreeList *list, const int pct_min, const int pct_max);
    void clearTreeMarks(FMTreeList *list);

    // selective
    bool evaluateSelective(FMStand *stand);
    bool markCropTrees(FMStand* stand);
    float testPixel(const QPointF &pos,  Grid<float> &grid);
    void setPixel(const QPointF &pos,  Grid<float> &grid);
    ThinningType mThinningType;

    // syntax checking
    static QStringList mSyntaxCustom;
    static QStringList mSyntaxSelective;

};


} // namespace
#endif // ACTTHINNING_H