MoonCycle.h

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#ifndef _utl_MoonCycle_h_
#define _utl_MoonCycle_h_

#include <utl/TimeStamp.h>


namespace utl {

  class MoonCycle {
  public:
    enum LunationEpoch {
      eJan2000,
      eJan2004
    };

    enum LunationType {
      eNewMoon,
      eFirstQuarter,
      eFullMoon,
      eLastQuarter
    };

    MoonCycle(const TimeStamp& time) : fTime(time) { }

    double GetLunation(const LunationType type = eFullMoon,
                       const LunationEpoch epoch = eJan2004) const;

    long GetFullMoonCycle(const LunationEpoch epoch = eJan2004) const
    { return GetLunation(eFullMoon, epoch); }

  private:
    const TimeStamp fTime;
  };

}


#endif