utm_util.h

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#ifndef TRANSFORM_UTIL_UTM_UTIL_H_
#define TRANSFORM_UTIL_UTM_UTIL_H_
 
#include <stdint.h>
 
#include <boost/serialization/singleton.hpp>
#include <boost/thread/mutex.hpp>
 
#include <proj.h>
 
namespace swri_transform_util
{
  uint32_t GetZone(double longitude);
 
  char GetBand(double latitude);
 
  class UtmUtil
  {
  public:
    UtmUtil();
 
    void ToUtm(
      double latitude, double longitude,
      int& zone, char& band, double& easting, double& northing) const;
 
    void ToUtm(
      double latitude, double longitude,
      double& easting, double& northing) const;
 
    void ToLatLon(
      int zone, char band, double easting, double northing,
      double& latitude, double& longitude) const;
 
  private:
    class UtmData
    {
      public:
        ~UtmData();
 
        void ToUtm(
          double latitude, double longitude,
          int& zone, char& band, double& easting, double& northing) const;
 
        void ToUtm(
          double latitude, double longitude,
          double& easting, double& northing) const;
 
        void ToLatLon(
          int zone, char band, double easting, double northing,
          double& latitude, double& longitude) const;
 
#if (BOOST_VERSION / 100 % 1000) >= 65 && (BOOST_VERSION / 100 % 1000) < 69
        friend class boost::serialization::singleton<swri_transform_util::UtmUtil::UtmData>;
#else
        friend class boost::serialization::detail::singleton_wrapper<swri_transform_util::UtmUtil::UtmData>;
#endif
      private:
        UtmData();
 
        PJ *P_ll_north_[60];
        PJ *P_ll_south_[60];
 
        mutable boost::mutex mutex_;
    };
    typedef boost::serialization::singleton<UtmData> UtmDataSingleton;
 
    const UtmData& utm_data_;
  };
}
 
#endif  // TRANSFORM_UTIL_UTM_UTIL_H_