TerrainTile.h

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#pragma once
 
#include <QtCore/QList>
class QGeoCoordinate;
class TerrainTileTest;
 
class TerrainTile
{
    friend class TerrainTileTest;
 
public:
    explicit TerrainTile(const QByteArray &byteArray);
    virtual ~TerrainTile();
 
    bool isValid() const { return _isValid; }
 
    double elevation(const QGeoCoordinate &coordinate) const;
 
    double minElevation() const { return (_isValid ? static_cast<double>(_tileInfo.minElevation) : qQNaN()); }
 
    double maxElevation() const { return (_isValid ? static_cast<double>(_tileInfo.maxElevation) : qQNaN()); }
 
    double avgElevation() const { return (_isValid ? _tileInfo.avgElevation : qQNaN()); }
 
protected:
    struct TileInfo_t {
        double  swLat, swLon, neLat, neLon;
        int16_t minElevation, maxElevation;
        double  avgElevation;
        int16_t gridSizeLat, gridSizeLon;
    } Q_PACKED;
 
private:
    TileInfo_t _tileInfo{};
    QList<QList<int16_t>> _elevationData;   
    double _cellSizeLat = 0.0;              
    double _cellSizeLon = 0.0;              
    bool _isValid = false;                  
};