time_example_1.cpp

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//==============================================================================
//
//  This file is part of GNSSTk, the ARL:UT GNSS Toolkit.
//
//  The GNSSTk is free software; you can redistribute it and/or modify
//  it under the terms of the GNU Lesser General Public License as published
//  by the Free Software Foundation; either version 3.0 of the License, or
//  any later version.
//
//  The GNSSTk is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with GNSSTk; if not, write to the Free Software Foundation,
//  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
//
//  This software was developed by Applied Research Laboratories at the
//  University of Texas at Austin.
//  Copyright 2004-2022, The Board of Regents of The University of Texas System
//
//==============================================================================
 
//==============================================================================
//
//  This software was developed by Applied Research Laboratories at the
//  University of Texas at Austin, under contract to an agency or agencies
//  within the U.S. Department of Defense. The U.S. Government retains all
//  rights to use, duplicate, distribute, disclose, or release this software.
//
//  Pursuant to DoD Directive 523024
//
//  DISTRIBUTION STATEMENT A: This software has been approved for public
//                            release, distribution is unlimited.
//
//==============================================================================
 
#include <iostream>
#include "SystemTime.hpp"
#include "CommonTime.hpp"
#include "CivilTime.hpp"
#include "YDSTime.hpp"
#include "GPSWeekSecond.hpp"
#include "MJD.hpp"
 
using namespace std;
using namespace gnsstk;
 
int main(int argc, char* argv[])
{
 
   try
   {
 
         // In the GNSSTk there are multiple classes to manage time, depending
         // on the specific operation that we want to carry out. This modular
         // approach eases handling the many different time systems used in the
         // modern Global Navigation Satellite Systems.
 
         // Note, however, that in the GNSSTk the unifying class to do time
         // computations is the 'CommonTime' class.
 
         // Read current time from system clock
      SystemTime systime;
 
         // Convert to 'CommonTime', the standard way to handle time at GNSSTk
         // Please note that declaration, initialization and conversion are
         // done in the same line.
      CommonTime comtime( systime );
 
         // This is the typical way to handle civil time
      CivilTime civtime( comtime );
 
         // The YDSTime class is very useful for common GNSS tasks
      YDSTime ydstime( comtime );
 
         // This is a typical class to handle time in GPS system
      GPSWeekSecond gpstime( comtime );
 
         // Class to handle Modified Julian Date
      MJD mjd( comtime );
 
      cout << "Hello world!" << endl;
      cout << "   The current civil time is " << civtime << endl;
      cout << "   The current year is " << ydstime.year << endl;
      cout << "   The current day of year is " << ydstime.doy << endl;
      cout << "   The current second of day is " << ydstime.sod << endl;
      cout << "   The current full GPS week is " << gpstime.week << endl;
      cout << "   The current short GPS week is " << gpstime.getModWeek()
           << endl;
      cout << "   The current day of GPS week is " << gpstime.getDayOfWeek()
           << endl;
      cout << "   The current second of GPS week is " << gpstime.sow << endl;
      cout << "   The current Modified Julian Date is " << mjd << endl;
 
   }
   catch( Exception error)
   {
      cout << error << endl;
      exit(-1);
   }
 
   exit(0);
}