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64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
#ifndef PROJECTION_H
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#define PROJECTION_H
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#include <QtGlobal>
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#include "common/coordinates.h"
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#include "pointd.h"
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#include "linearunits.h"
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#include "coordinatesystem.h"
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#include "gcs.h"
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#include "ct.h"
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#include "proj/latlon.h"
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class PCS;
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class Projection {
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public:
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Projection() : _ct(0) {}
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Projection(const Projection &p);
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Projection(const PCS &pcs);
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Projection(const GCS &gcs, const CoordinateSystem &cs
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= CoordinateSystem(CoordinateSystem::YX));
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~Projection();
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Projection &operator=(const Projection &p);
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bool operator==(const Projection &p) const;
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bool isNull() const
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{
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return (_gcs.isNull() && _ct == 0 && _units.isNull() && _cs.isNull());
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}
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bool isValid() const
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{
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/* We do not check the CoordinateSystem here as it is not always defined
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and except of WMTS/WMS it is not needed. */
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return (_gcs.isValid() && _ct != 0 && _units.isValid());
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}
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bool isGeographic() const
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{
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return (dynamic_cast<const LatLon*>(_ct) != 0);
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}
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PointD ll2xy(const Coordinates &c) const
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{
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Q_ASSERT(isValid());
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return _units.fromMeters(_ct->ll2xy(_gcs.fromWGS84(c)));
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}
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Coordinates xy2ll(const PointD &p) const
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{
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Q_ASSERT(isValid());
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return _gcs.toWGS84(_ct->xy2ll(_units.toMeters(p)));
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}
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const LinearUnits &units() const {return _units;}
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const CoordinateSystem &coordinateSystem() const {return _cs;}
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private:
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GCS _gcs;
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const CT *_ct;
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LinearUnits _units;
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CoordinateSystem _cs;
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};
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#endif // PROJECTION_H
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