AngleReduced.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 <math.h>
#include "AngleReduced.hpp"
#include "GNSSconstants.hpp"
 
namespace gnsstk
{
   AngleReduced ::
   AngleReduced()
         : sine(std::numeric_limits<double>::quiet_NaN()),
           cosine(std::numeric_limits<double>::quiet_NaN())
   {}
 
 
   void AngleReduced ::
   setValue(double v, AngleType t)
   {
      double radians;
      switch (t)
      {
         case AngleType::Rad:
            sine = ::sin(v);
            cosine = ::cos(v);
            break;
         case AngleType::Deg:
            radians = v * DEG2RAD;
            sine = ::sin(radians);
            cosine = ::cos(radians);
            break;
         case AngleType::SemiCircle:
            radians = v * PI;
            sine = ::sin(radians);
            cosine = ::cos(radians);
            break;
         case AngleType::Sin:
            sine = v;
            cosine = ::sqrt(1-sine*sine);
            break;
         case AngleType::Cos:
            cosine = v;
            sine = ::sqrt(1-cosine*cosine);
            break;
         default:
            GNSSTK_THROW(Exception("Invalid type in setValue"));
            break;
      }
   }
}