latlong.cpp

来自「提取各种NEMA0183格式数据的类编程。」· C++ 代码 · 共 128 行

/*
** Author: Samuel R. Blackburn
** Internet: [e-mail]
**
** Copyright, 1996-2005, Samuel R. Blackburn
**
** "You can get credit for something or get it done, but not both."
** Dr. Richard Garwin
**
** BSD License follows.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** Redistributions of source code must retain the above copyright notice,
** this list of conditions and the following disclaimer. Redistributions
** in binary form must reproduce the above copyright notice, this list
** of conditions and the following disclaimer in the documentation and/or
** other materials provided with the distribution. Neither the name of
** the WFC nor the names of its contributors may be used to endorse or
** promote products derived from this software without specific prior
** written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**
** $Workfile: latlong.cpp $
** $Revision: 5 $
** $Modtime: 10/13/98 6:39a $
*/

#include "nmea0183.h"
#pragma hdrstop

#if defined( _DEBUG ) && defined( _INC_CRTDBG )
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#define new DEBUG_NEW
#endif // _DEBUG

LATLONG::LATLONG()
{
   Empty();
}

LATLONG::~LATLONG()
{
   Empty();
}

void LATLONG::Empty( void )
{
   Latitude.Empty();
   Longitude.Empty();
}

BOOL LATLONG::Parse( int LatitudePositionFieldNumber, int NorthingFieldNumber, int LongitudePositionFieldNumber, int EastingFieldNumber, const SENTENCE& LineToParse )
{
   Latitude.Parse(  LatitudePositionFieldNumber, NorthingFieldNumber, LineToParse );
   Longitude.Parse( LongitudePositionFieldNumber, EastingFieldNumber, LineToParse );

   if ( Latitude.IsDataValid() && Longitude.IsDataValid() )
   {
      return( TRUE );
   }
   else
   {
      return( FALSE );
   }
}

CString LATLONG::ToText( void ) const
{
   CString return_string;

   return_string.Format( TEXT( "Latitude %d %8.5lf" ), Latitude.GetWholeDegrees(), Latitude.GetDecimalMinutes() );

   if ( Latitude.Northing == North )
   {
      return_string += TEXT( " North, Longitude " );
   }
   else
   {
      return_string += TEXT( " South, Longitude " );
   }

   CString temp_string;

   temp_string.Format( TEXT( "%d %8.5lf" ), Longitude.GetWholeDegrees(), Longitude.GetDecimalMinutes() );

   return_string += temp_string;

   if ( Longitude.Easting == East )
   {
      return_string += TEXT( " East" );
   }
   else
   {
      return_string += TEXT( " West" );
   }

   return( return_string );
}

void LATLONG::Write( SENTENCE& sentence )
{
   Latitude.Write( sentence );
   Longitude.Write( sentence );
}

const LATLONG& LATLONG::operator = ( const LATLONG& source )
{
   Latitude  = source.Latitude;
   Longitude = source.Longitude;

   return( *this );
}