latlong.h

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#pragma once
 
/*+
________________________________________________________________________
 
 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Bert
 Date:          2008
 Contents:      Geographics lat/long <-> Coord transform (an estimate)
 RCS:           $Id$
________________________________________________________________________
 
-*/
 
#include "basicmod.h"
#include "coord.h"
 
namespace Coords { class CoordSystem; }
 
 
mExpClass(Basic) LatLong
{
public:
                        LatLong( double la=0, double lo=0 )
                            : lat_(la), lng_(lo)  {}
                        LatLong( const LatLong& ll )
                            : lat_(ll.lat_), lng_(ll.lng_)      {}
 
    bool                operator ==(const LatLong&) const;
 
                        LatLong( const Coord& c ) { *this = transform(c); }
                        operator Coord() const    { return transform(*this); }
                        //Using SI()
 
    bool                isDefined() const {return !mIsUdf(lat_)&&!mIsUdf(lng_);}
    static LatLong      udf() { return LatLong(mUdf(double),mUdf(double)); }
 
    static Coord        transform(const LatLong&,bool towgs84=false,
                                  const Coords::CoordSystem* si=0);
    static LatLong      transform(const Coord&,bool towgs84=false,
                                  const Coords::CoordSystem* si=0);
 
    const char*         toString() const;
    bool                fromString(const char*);
 
    void                getDMS(bool lat,int&,int&,float&) const;
    void                setDMS(bool lat,int,int,float);
 
    bool                setFromString(const char*,bool lat);
    static bool         isDMSString(const BufferString&);
 
    double              lat_;
    double              lng_;
 
protected:
    bool                parseDMSString(const BufferString&,bool lat);
};
 
 
mExpClass(Basic) LatLong2Coord
{
public:
 
                        LatLong2Coord();
                        LatLong2Coord(const Coord&,const LatLong&);
    bool                isOK() const    { return !mIsUdf(lngdist_); }
 
    void                set(const LatLong&,const Coord&);
 
    LatLong             transform(const Coord&) const;
    Coord               transform(const LatLong&) const;
 
    const char*         toString() const;
    bool                fromString(const char*);
 
    Coord               refCoord() const        { return refcoord_; }
    LatLong             refLatLong() const      { return reflatlng_; }
 
protected:
 
    Coord               refcoord_;
    LatLong             reflatlng_;
 
    double              latdist_;
    double              lngdist_;
    double              scalefac_;
};