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65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
#ifndef DATUM_H
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#define DATUM_H
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#include <cmath>
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#include <QDebug>
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#include "common/coordinates.h"
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#include "ellipsoid.h"
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#include "geocentric.h"
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class Datum
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{
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public:
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Datum() : _ellipsoid(0), _transformation(None), _dx(NAN), _dy(NAN),
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_dz(NAN), _rx(NAN), _ry(NAN), _rz(NAN), _scale(NAN) {}
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Datum(const Ellipsoid *ellipsoid, double dx, double dy, double dz,
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double rx, double ry, double rz, double ds);
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Datum(const Ellipsoid *ellipsoid, double dx, double dy, double dz);
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const Ellipsoid *ellipsoid() const {return _ellipsoid;}
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double dx() const {return _dx;}
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double dy() const {return _dy;}
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double dz() const {return _dz;}
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double rx() const {return _rx;}
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double ry() const {return _ry;}
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double rz() const {return _rz;}
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double scale() const {return _scale;}
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bool isNull() const
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{return !_ellipsoid;}
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bool isValid() const
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{return (_ellipsoid && !std::isnan(_dx) && !std::isnan(_dy)
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&& !std::isnan(_dz) && !std::isnan(_scale) && !std::isnan(_rx)
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&& !std::isnan(_ry) && !std::isnan(_rz));}
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Coordinates toWGS84(const Coordinates &c) const;
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Coordinates fromWGS84(const Coordinates &c) const;
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static const Datum &WGS84();
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private:
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enum TransformationType {
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None,
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Molodensky,
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Helmert
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};
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Point3D helmert(const Point3D &p) const;
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Point3D helmertr(const Point3D &p) const;
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const Ellipsoid *_ellipsoid;
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TransformationType _transformation;
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double _dx, _dy, _dz, _rx, _ry, _rz, _scale;
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};
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inline bool operator==(const Datum &d1, const Datum &d2)
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{return (*d1.ellipsoid() == *d2.ellipsoid() && d1.dx() == d2.dx()
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&& d1.dy() == d2.dy() && d1.dz() == d2.dz() && d1.rx() == d2.rx()
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&& d1.ry() == d2.ry() && d1.rz() == d2.rz() && d1.scale() == d2.scale());}
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#ifndef QT_NO_DEBUG
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QDebug operator<<(QDebug dbg, const Datum &datum);
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#endif // QT_NO_DEBUG
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#endif // DATUM_H
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