JGeometry3D/JTime.hh

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#ifndef __JTIME1__
#define __JTIME1__
 
#include <istream>
#include <ostream>
 
#include "JIO/JSerialisable.hh"
 
 
/**
 * \author mdejong
 */
 
namespace JGEOMETRY3D {}
namespace JPP { using namespace JGEOMETRY3D; }
 
namespace JGEOMETRY3D {
 
  using JIO::JReader;
  using JIO::JWriter;
 
 
  /**
   * Time.
   */
  class JTime
  {
  public:
    /**
     * Default constructor.
     */
    JTime() :
      __t(0.0)
    {}
 
 
    /**
     * Constructor.
     *
     * \param  t                time
     */
    JTime(const double t) :
      __t(t)
    {}
 
 
    /**
     * Prefix unary minus.
     *
     * \return                  time
     */
    JTime& negate()
    {
      __t = -__t;
 
      return *this;
    }
 
 
    /**
     * Addition operator.
     *
     * \param  value            time
     * \return                  time
     */
    JTime& add(const JTime& value)
    {
      __t += value.getT();
 
      return *this;
    }
 
 
    /**
     * Subtraction operator.
     *
     * \param  value            time
     * \return                  time
     */
    JTime& sub(const JTime& value)
    {
      __t -= value.getT();
 
      return *this;
    }
 
 
    /**
     * Multiplication operator.
     *
     * \param  value            multiplication factor
     * \return                  time
     */
    JTime& mul(const double value)
    {
      __t *= value;
 
      return *this;
    }
 
 
    /**
     * Division operator.
     *
     * \param  value            multiplication factor
     * \return                  time
     */
    JTime& div(const double value)
    {
      __t /= value;
 
      return *this;
    }
 
 
    /**
     * Get time.
     *
     * \return                  time
     */
    inline double getT() const
    {
      return __t;
    }
 
 
    /**
     * Read time from input.
     *
     * \param  in            input stream
     * \param  time          time
     * \return               input stream
     */
    friend inline std::istream& operator>>(std::istream& in, JTime& time)
    {
      in >> time.__t;
 
      return in;
    }
 
 
    /**
     * Write time to output.
     *
     * \param  out           output stream
     * \param  time          time
     * \return               output stream
     */
    friend inline std::ostream& operator<<(std::ostream& out, const JTime& time)
    {
      out << time.__t;
 
      return out;
    }
 
 
    /**
     * Read time from input.
     *
     * \param  in            reader
     * \param  time          time
     * \return               reader
     */
    friend inline JReader& operator>>(JReader& in, JTime& time)
    {
      in >> time.__t;
 
      return in;
    }
 
 
    /**
     * Write time to output.
     *
     * \param  out           writer
     * \param  time          time
     * \return               writer
     */
    friend inline JWriter& operator<<(JWriter& out, const JTime& time)
    {
      out << time.__t;
 
      return out;
    }
 
 
  protected:
    double __t;
  };
}
 
#endif