Subversion Repositories public iLand

#ifndef LAYEREDGRID_H
#define LAYEREDGRID_H

#include "grid.h"

/** LayeredGrid

  */

class LayeredGridBase
{
public:
    // access to properties
    virtual int sizeX() const=0;
    virtual int sizeY() const=0;
    virtual QRectF metricRect() const=0;
    virtual QRectF cellRect(const QPoint &p) const=0;
    // available variables
    virtual const QStringList names() const=0;
    // statistics
    /// retrieve min and max of variable 'index'
    virtual void range(double &rMin, double &rMax, const int index) const=0;

    // data access functions
    virtual double value(const float x, const float y, const int index) const = 0;
    virtual double value(const QPointF &world_coord, const int index) const = 0;
    virtual double value(const int ix, const int iy, const int index) const = 0;
    virtual double value(const int grid_index, const int index) const = 0;
};

template <class T>
class LayeredGrid: public LayeredGridBase
{
public:
    LayeredGrid(const Grid<T>& grid) { mGrid = &grid; }
    LayeredGrid() { mGrid = 0; }
    QRectF cellRect(const QPoint &p) const { return mGrid->cellRect(p); }
    QRectF metricRect() const { return mGrid->metricRect(); }
    int sizeX() const { return mGrid->sizeX(); }
    int sizeY() const { return mGrid->sizeY();}

    virtual double value(const T& data, const int index) const = 0;
    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); }
    double value(const QPointF &world_coord, const int index) const { return value(mGrid->constValueAt(world_coord), index); }
    double value(const int ix, const int iy, const int index) const { return value(mGrid->constValueAtIndex(ix, iy), index); }
    void range(double &rMin, double &rMax, const int index) const { 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