dtmsampler.h

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#ifndef OPENSWMMVIS_MESH_DTMSAMPLER_H
#define OPENSWMMVIS_MESH_DTMSAMPLER_H
 
#include <QPointF>
#include <QString>
#include <QVector>
 
class GDALDataset;
 
namespace mesh {
 
class DTMSampler
{
public:
    DTMSampler();
    ~DTMSampler();
 
    DTMSampler(const DTMSampler &) = delete;
    DTMSampler &operator=(const DTMSampler &) = delete;
 
    bool open(const QString &path, int band = 1);
 
    void close();
    [[nodiscard]] bool isOpen() const noexcept;
 
    [[nodiscard]] double sample(double x, double y) const;
 
    [[nodiscard]] QVector<double> sampleBulk(const QVector<QPointF> &pts) const;
 
    [[nodiscard]] double pixelSize() const;
 
    [[nodiscard]] QString crsWkt() const;
 
    [[nodiscard]] QString errorMsg() const { return m_errorMsg; }
 
private:
    GDALDataset *m_ds        = nullptr;
    int          m_band      = 1;
    double       m_geo[6]    = {0,0,0,0,0,0};   
    double       m_invGeo[6] = {0,0,0,0,0,0};   
    int          m_width     = 0;
    int          m_height    = 0;
    double       m_noData    = 0.0;
    bool         m_hasNoData = false;
    mutable QString m_errorMsg;
};
 
} // namespace mesh
 
#endif // OPENSWMMVIS_MESH_DTMSAMPLER_H