latlon.h

GPS的一个应用程序,很不错的.大家试一试.

#ifndef LATLON_H
#define LATLON_H

#include "datatypes.h"
#include <iostream>

using namespace std;

namespace gpsmgr
{

    //--------------------------------------------------------------------------
    class Latitude
    {
    public:
	Latitude();

	/** throws Exception<IllegalValue> */
	Latitude(BrgDegs val);

	BrgDegs value() const;

	/** throws Exception<IllegalValue> */
	void setValue(BrgDegs val);
	
    private:
	BrgDegs mValue;
    };

    //--------------------------------------------------------------------------
    class Longitude
    {
    public:
	Longitude();

	/** throws Exception<IllegalValue> */
	Longitude(BrgDegs lat);

	BrgDegs value() const;

	/** throws Exception<IllegalValue> */
	void setValue(BrgDegs val);
	
    private:
	BrgDegs mValue;
    };

    //--------------------------------------------------------------------------
    class LatLon
    {
    public:
	LatLon();
	LatLon(const Latitude& lat, const Longitude& lon);

	const Latitude& lat() const;
	void setLat(const Latitude& lat);

	const Longitude& lon() const;
	void setLon(const Longitude& lon);
	
    private:
	Latitude mLat;
	Longitude mLon;
    };

    bool operator<(const Latitude& lhs, const Latitude& rhs);
    bool operator<(const Longitude& lhs, const Longitude& rhs);
    bool operator<(const LatLon& lhs, const LatLon& rhs);
    
    bool operator==(const Latitude& lhs, const Latitude& rhs);
    bool operator==(const Longitude& lhs, const Longitude& rhs);
    bool operator==(const LatLon& lhs, const LatLon& rhs);

    bool operator!=(const Latitude& lhs, const Latitude& rhs);
    bool operator!=(const Longitude& lhs, const Longitude& rhs);
    bool operator!=(const LatLon& lhs, const LatLon& rhs);

    ostream& operator<<(ostream& os, const Latitude& lat);
    ostream& operator<<(ostream& os, const Longitude& lon);
    ostream& operator<<(ostream& os, const LatLon& ll);

    istream& operator>>(istream& is, Latitude& ll);
    istream& operator>>(istream& is, Longitude& ll);
    istream& operator>>(istream& is, LatLon& ll);
    
}

#endif