HourAngle.h

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// $Id: HourAngle.h,v 1.16 2006/01/13 14:36:04 cgwon Exp $

#ifndef CARMA_SERVICES_HOURANGLE_H
#define CARMA_SERVICES_HOURANGLE_H

#include "carma/services/Angle.h"
#include <iostream>
#include <string>

namespace carma  {
  namespace services {
      class HourAngle : public Angle {
        public:

            HourAngle(double value, 
                      const std::string& units);

            virtual ~HourAngle();
            
            double convert(const std::string& convertTo) const;

            std::string getUnits() const;

            double hours() const;

            void reset(double value, const std::string& units);

            const HourAngle operator+(const HourAngle& angle) const;

            const HourAngle operator-(const HourAngle& angle) const;

            HourAngle &operator+=(const HourAngle &frequency);

            HourAngle &operator-=(const HourAngle &frequency);

            std::string getString(int precision=0);

            std::string getLstString(int precision=0);

            static inline std::string getAngleString(double angle, int precision=0) {
              return Angle::getAngleString(angle, precision, false);
            }

            static std::string hms(double decimalHours, int precision);

        private:

            HourAngle moduloPi(double value) const;
            double moduloPiDouble(double value) const;
            inline static std::string hourUnits()
                { 
                    return "circle (hours/day)"; 
                }

            bool isHours(const std::string& units) const;

            std::string HOURS_;

      };

std::ostream& operator<<(std::ostream& os, 
                         const carma::services::HourAngle& hourangle);

  }
}



#endif //CARMA_SERVICES_HOURANGLE_H