mirror of
https://github.com/tumic0/GPXSee.git
synced 2024-11-24 03:35:53 +01:00
Added support for EPSG:9606 and EPSG:9607 datum transformations
This commit is contained in:
parent
bd6c6ef344
commit
792ec17a20
@ -126,7 +126,8 @@ HEADERS += src/config.h \
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src/data/igcparser.h \
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src/data/nmeaparser.h \
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src/data/oziparsers.h \
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src/map/rectd.h
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src/map/rectd.h \
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src/map/geocentric.h
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SOURCES += src/main.cpp \
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src/common/coordinates.cpp \
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src/common/rectc.cpp \
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@ -220,7 +221,8 @@ SOURCES += src/main.cpp \
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src/data/fitparser.cpp \
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src/data/igcparser.cpp \
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src/data/nmeaparser.cpp \
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src/data/oziparsers.cpp
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src/data/oziparsers.cpp \
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src/map/geocentric.cpp
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RESOURCES += gpxsee.qrc
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TRANSLATIONS = lang/gpxsee_cs.ts \
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lang/gpxsee_sv.ts \
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@ -2,6 +2,10 @@
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#include "common/wgs84.h"
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#include "datum.h"
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#define as2rad(x) ((x) * 4.84814e-6)
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#define rad2as(x) ((x) * 206265.0)
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static Ellipsoid WGS84e = Ellipsoid(WGS84_RADIUS, WGS84_FLATTENING);
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static Datum WGS84 = Datum(&WGS84e, 0.0, 0.0, 0.0);
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@ -43,29 +47,103 @@ static Coordinates molodensky(const Coordinates &c, const Datum &from,
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return Coordinates(c.lon() + rad2deg(dlon), c.lat() + rad2deg(dlat));
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}
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Datum::Datum(const Ellipsoid *ellipsoid, double dx, double dy, double dz)
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: _ellipsoid(ellipsoid), _dx(dx), _dy(dy), _dz(dz)
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Point3D Datum::helmert(const Point3D &p) const
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{
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_WGS84 = (_ellipsoid->radius() == WGS84_RADIUS
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&& _ellipsoid->flattening() == WGS84_FLATTENING && _dx == 0.0
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&& _dy == 0.0 && _dz == 0.0) ? true : false;
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double scale = 1 + _ds * 1e-6;
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double R00 = 1;
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double R01 = _rz;
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double R02 = -_ry;
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double R10 = -_rz;
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double R11 = 1;
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double R12 = _rx;
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double R20 = _ry;
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double R21 = -_rx;
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double R22 = 1;
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return Point3D(scale * (R00 * p.x() + R01 * p.y() + R02 * p.z()) + _dx,
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scale * (R10 * p.x() + R11 * p.y() + R12 * p.z()) + _dy,
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scale * (R20 * p.x() + R21 * p.y() + R22 * p.z()) + _dz);
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}
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Point3D Datum::helmertr(const Point3D &p) const
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{
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double scale = 1 + _ds * 1e-6;
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double R00 = 1;
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double R01 = _rz;
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double R02 = -_ry;
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double R10 = -_rz;
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double R11 = 1;
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double R12 = _rx;
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double R20 = _ry;
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double R21 = -_rx;
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double R22 = 1;
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double x = (p.x() - _dx) / scale;
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double y = (p.y() - _dy) / scale;
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double z = (p.z() - _dz) / scale;
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return Point3D(R00 * x + R10 * y + R20 * z, R01 * x + R11 * y + R21 * z,
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R02 * x + R12 * y + R22 * z);
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}
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Datum::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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: _ellipsoid(ellipsoid), _dx(dx), _dy(dy), _dz(dz), _rx(as2rad(rx)),
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_ry(as2rad(ry)), _rz(as2rad(rz)), _ds(ds)
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{
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if (_ellipsoid->radius() == WGS84_RADIUS && _ellipsoid->flattening()
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== WGS84_FLATTENING && _dx == 0.0 && _dy == 0.0 && _dz == 0.0
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&& _rx == 0.0 && _ry == 0.0 && _rz == 0.0 && _ds == 0.0)
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_shift = None;
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else
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_shift = Helmert;
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}
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Datum::Datum(const Ellipsoid *ellipsoid, double dx, double dy, double dz)
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: _ellipsoid(ellipsoid), _dx(dx), _dy(dy), _dz(dz), _rx(0.0), _ry(0.0),
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_rz(0.0), _ds(0.0)
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{
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if (_ellipsoid->radius() == WGS84_RADIUS && _ellipsoid->flattening()
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== WGS84_FLATTENING && _dx == 0.0 && _dy == 0.0 && _dz == 0.0)
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_shift = None;
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else
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_shift = Molodensky;
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}
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Coordinates Datum::toWGS84(const Coordinates &c) const
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{
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return _WGS84 ? c : molodensky(c, *this, WGS84);
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switch (_shift) {
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case Helmert:
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return Geocentric::toGeodetic(helmert(Geocentric::fromGeodetic(c,
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*this)), WGS84);
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case Molodensky:
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return molodensky(c, *this, WGS84);
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default:
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return c;
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}
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}
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Coordinates Datum::fromWGS84(const Coordinates &c) const
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{
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return _WGS84 ? c : molodensky(c, WGS84, *this);
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switch (_shift) {
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case Helmert:
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return Geocentric::toGeodetic(helmertr(Geocentric::fromGeodetic(c,
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WGS84)), *this);
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case Molodensky:
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return molodensky(c, WGS84, *this);
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default:
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return c;
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}
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}
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#ifndef QT_NO_DEBUG
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QDebug operator<<(QDebug dbg, const Datum &datum)
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{
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dbg.nospace() << "Datum(" << *datum.ellipsoid() << ", " << datum.dx()
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<< ", " << datum.dy() << ", " << datum.dz() << ")";
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<< ", " << datum.dy() << ", " << datum.dz() << ", " << rad2as(datum.rx())
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<< ", " << rad2as(datum.ry()) << ", " << rad2as(datum.rz()) << ", "
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<< datum.ds() << ")";
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return dbg.space();
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}
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#endif // QT_NO_DEBUG
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@ -4,40 +4,57 @@
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#include <cmath>
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#include <QList>
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#include <QDebug>
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#include "ellipsoid.h"
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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), _dx(NAN), _dy(NAN), _dz(NAN),
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_WGS84(false) {}
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Datum() : _ellipsoid(0), _shift(None), _dx(NAN), _dy(NAN), _dz(NAN),
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_rx(NAN), _ry(NAN), _rz(NAN), _ds(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 ds() const {return _ds;}
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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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bool isNull() const
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{return (!_ellipsoid && std::isnan(_dx) && std::isnan(_dy)
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&& std::isnan(_dz));}
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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));}
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&& !std::isnan(_dz) && !std::isnan(_ds) && !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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private:
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enum ShiftType {
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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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double _dx, _dy, _dz;
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bool _WGS84;
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ShiftType _shift;
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double _dx, _dy, _dz, _rx, _ry, _rz, _ds;
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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());}
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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.ds() == d2.ds());}
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#ifndef QT_NO_DEBUG
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QDebug operator<<(QDebug dbg, const Datum &datum);
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@ -78,6 +78,7 @@ void GCS::loadList(const QString &path)
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bool res;
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int ln = 0;
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const Ellipsoid *e;
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double ds, rx, ry, rz;
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if (!file.open(QFile::ReadOnly)) {
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@ -145,6 +146,33 @@ void GCS::loadList(const QString &path)
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qWarning("%s:%d: Invalid dz", qPrintable(path), ln);
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continue;
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}
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if (list.size() == 14) {
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rx = list[10].trimmed().toDouble(&res);
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if (!res) {
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qWarning("%s:%d: Invalid rx", qPrintable(path), ln);
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continue;
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}
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ry = list[11].trimmed().toDouble(&res);
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if (!res) {
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qWarning("%s:%d: Invalid ry", qPrintable(path), ln);
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continue;
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}
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rz = list[12].trimmed().toDouble(&res);
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if (!res) {
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qWarning("%s:%d: Invalid rz", qPrintable(path), ln);
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continue;
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}
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ds = list[13].trimmed().toDouble(&res);
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if (!res) {
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qWarning("%s:%d: Invalid ds", qPrintable(path), ln);
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continue;
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}
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} else {
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rx = NAN;
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ry = NAN;
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rz = NAN;
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ds = NAN;
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}
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if (!(e = Ellipsoid::ellipsoid(el))) {
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qWarning("%s:%d: Unknown ellipsoid code", qPrintable(path), ln);
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@ -156,11 +184,22 @@ void GCS::loadList(const QString &path)
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case 9603:
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datum = Datum(e, dx, dy, dz);
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break;
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case 9606:
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datum = Datum(e, dx, dy, dz, -rx, -ry, -rz, ds);
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break;
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case 9607:
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datum = Datum(e, dx, dy, dz, rx, ry, rz, ds);
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break;
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default:
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qWarning("%s:%d: Unknown coordinates transformation method",
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qPrintable(path), ln);
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continue;
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}
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if (!datum.isValid()) {
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qWarning("%s:%d: Invalid coordinates transformation parameters",
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qPrintable(path), ln);
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continue;
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}
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GCS gcs(datum, pm, au);
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if (gcs.isValid())
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118
src/map/geocentric.cpp
Normal file
118
src/map/geocentric.cpp
Normal file
@ -0,0 +1,118 @@
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/*
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* Based on libgeotrans with the following Source Code Disclaimer:
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1. The GEOTRANS source code ("the software") is provided free of charge by
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the National Imagery and Mapping Agency (NIMA) of the United States
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Department of Defense. Although NIMA makes no copyright claim under Title 17
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U.S.C., NIMA claims copyrights in the source code under other legal regimes.
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NIMA hereby grants to each user of the software a license to use and
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distribute the software, and develop derivative works.
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2. Warranty Disclaimer: The software was developed to meet only the internal
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requirements of the U.S. National Imagery and Mapping Agency. The software
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is provided "as is," and no warranty, express or implied, including but not
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limited to the implied warranties of merchantability and fitness for
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particular purpose or arising by statute or otherwise in law or from a
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course of dealing or usage in trade, is made by NIMA as to the accuracy and
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functioning of the software.
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3. NIMA and its personnel are not required to provide technical support or
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general assistance with respect to the software.
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4. Neither NIMA nor its personnel will be liable for any claims, losses, or
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damages arising from or connected with the use of the software. The user
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agrees to hold harmless the United States National Imagery and Mapping
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Agency. The user's sole and exclusive remedy is to stop using the software.
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5. NIMA requests that products developed using the software credit the
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source of the software with the following statement, "The product was
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developed using GEOTRANS, a product of the National Imagery and Mapping
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Agency and U.S. Army Engineering Research and Development Center."
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6. For any products developed using the software, NIMA requires a disclaimer
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that use of the software does not indicate endorsement or approval of the
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product by the Secretary of Defense or the National Imagery and Mapping
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Agency. Pursuant to the United States Code, 10 U.S.C. Sec. 2797, the name of
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the National Imagery and Mapping Agency, the initials "NIMA", the seal of
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the National Imagery and Mapping Agency, or any colorable imitation thereof
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shall not be used to imply approval, endorsement, or authorization of a
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product without prior written permission from United States Secretary of
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Defense.
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*/
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#include "datum.h"
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#include "geocentric.h"
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#ifndef M_PI_2
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#define M_PI_2 1.57079632679489661923
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#endif // M_PI_2
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#define AD_C 1.0026000
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Point3D Geocentric::fromGeodetic(const Coordinates &c, const Datum &datum)
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{
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const Ellipsoid *e = datum.ellipsoid();
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double e2 = 2.0 * e->flattening() - e->flattening() * e->flattening();
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double lat = deg2rad(c.lat());
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double lon = deg2rad(c.lon());
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double slat = sin(lat);
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double slat2 = slat * slat;
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double clat = cos(lat);
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double Rn = e->radius() / (sqrt(1.0 - e2 * slat2));
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if (lon > M_PI)
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lon -= (2 * M_PI);
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return Point3D(Rn * clat * cos(lon), Rn * clat * sin(lon),
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(Rn * (1 - e2)) * slat);
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}
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Coordinates Geocentric::toGeodetic(const Point3D &p, const Datum &datum)
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{
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const Ellipsoid *e = datum.ellipsoid();
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double b = e->radius() * (1.0 - e->flattening());
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double e2 = 2.0 * e->flattening() - e->flattening() * e->flattening();
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double ep2 = (1.0 / (1.0 - e2)) - 1.0;
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bool pole = false;
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double lat, lon;
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if (p.x() == 0.0) {
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if (p.y() > 0)
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lon = M_PI_2;
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else if (p.y() < 0)
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lon = -M_PI_2;
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else {
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pole = true;
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lon = 0.0;
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if (p.z() > 0.0)
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lat = M_PI_2;
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else if (p.z() < 0.0)
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lat = -M_PI_2;
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else
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return Coordinates(rad2deg(lon), rad2deg(M_PI_2));
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}
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} else
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lon = atan2(p.y(), p.x());
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double W2 = p.x()*p.x() + p.y()*p.y();
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double W = sqrt(W2);
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double T0 = p.z() * AD_C;
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double S0 = sqrt(T0 * T0 + W2);
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double Sin_B0 = T0 / S0;
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double Cos_B0 = W / S0;
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double Sin3_B0 = Sin_B0 * Sin_B0 * Sin_B0;
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double T1 = p.z() + b * ep2 * Sin3_B0;
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double Sum = W - e->radius() * e2 * Cos_B0 * Cos_B0 * Cos_B0;
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double S1 = sqrt(T1*T1 + Sum * Sum);
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double Sin_p1 = T1 / S1;
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double Cos_p1 = Sum / S1;
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if (!pole)
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lat = atan(Sin_p1 / Cos_p1);
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return Coordinates(rad2deg(lon), rad2deg(lat));
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}
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29
src/map/geocentric.h
Normal file
29
src/map/geocentric.h
Normal file
@ -0,0 +1,29 @@
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#ifndef GEOCENTRIC_H
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#define GEOCENTRIC_H
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#include <cmath>
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#include "common/coordinates.h"
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class Datum;
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class Point3D {
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public:
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Point3D() : _x(NAN), _y(NAN), _z(NAN) {}
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Point3D(double x, double y, double z) : _x(x), _y(y), _z(z) {}
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double x() const {return _x;}
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double y() const {return _y;}
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double z() const {return _z;}
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private:
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double _x;
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double _y;
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double _z;
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};
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||||
|
||||
namespace Geocentric {
|
||||
Point3D fromGeodetic(const Coordinates &c, const Datum &datum);
|
||||
Coordinates toGeodetic(const Point3D &p, const Datum &datum);
|
||||
}
|
||||
|
||||
#endif // GEOCENTRIC_H
|
||||
Loading…
Reference in New Issue
Block a user