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#ifndef LAYEREDGRID_H

#define LAYEREDGRID_H

#include "grid.h"

/** LayeredGrid

  */

class LayeredGridBase

{

public:

    // access to properties

    int sizeX() const;

    int sizeY() const;

    QRectF metricRect() const;

    // available variables

    virtual const QStringList names() const=0;

    // statistics

    /// retrieve min and max of variable 'index'

    void range(double &rMin, double &rMax, const int index);

    // data access functions

    double value(const float x, const float y, const int index) const;

    double value(const int grid_index, const int index) const;

};

template <class T>

class LayeredGrid: public LayeredGridBase

{

public:

    LayeredGrid(const Grid<T>& grid) { mGrid = &grid; }

    LayeredGrid() { mGrid = 0; }

    double value(const T& data, const int index) const;

    double value(const T* ptr, const int index) const { return value(mGrid->constValueAtIndex(mGrid->indexOf(ptr)), index);  }

    double value(const int grid_index, const int index) const { return value(mGrid->constValueAtIndex(grid_index), index); }

    double value(const float x, const float y, const int index) const { return value(mGrid->constValueAt(x,y), index); }

    void range(double &rMin, double &rMax, const int index) { rMin=9999999999.; rMax=-99999999999.;

                                                              for (int i=0;i<mGrid->count(); ++i) {

                                                                  rMin=qMin(rMin, value(i, index));

                                                                  rMax=qMax(rMax, value(i,index));}}

protected:

    const Grid<T> *mGrid;

};

#endif // LAYEREDGRID_H