| 1 | #include "nmea0183.h"
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| 2 | #pragma hdrstop
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| 3 |
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| 4 | /*
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| 5 | ** Author: Samuel R. Blackburn
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| 6 | ** Internet: sam_blackburn@pobox.com
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| 7 | **
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| 8 | ** You can use it any way you like as long as you don't try to sell it.
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| 9 | **
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| 10 | ** Copyright, 1997, Samuel R. Blackburn
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| 11 | **
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| 12 | ** $Workfile: long.cpp $
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| 13 | ** $Revision: 6 $
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| 14 | ** $Modtime: 10/12/98 6:50a $
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| 15 | */
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| 16 |
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| 17 | #ifdef _MSC_VER
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| 18 | # pragma warning(disable:4996)
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| 19 | #endif // _MSC_VER
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| 20 |
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| 21 | LONGITUDE::LONGITUDE()
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| 22 | {
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| 23 | Empty();
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| 24 | }
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| 25 |
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| 26 | LONGITUDE::~LONGITUDE()
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| 27 | {
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| 28 | Empty();
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| 29 | }
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| 30 |
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| 31 | void LONGITUDE::Empty( void )
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| 32 | {
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| 33 | Longitude = 0.0;
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| 34 | Easting = EW_Unknown;
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| 35 | }
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| 36 |
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| 37 | BOOL LONGITUDE::IsDataValid( void )
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| 38 | {
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| 39 | if ( Easting != East && Easting != West )
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| 40 | {
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| 41 | return( FALSE );
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| 42 | }
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| 43 |
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| 44 | return( TRUE );
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| 45 | }
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| 46 |
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| 47 | void LONGITUDE::Parse( int position_field_number, int east_or_west_field_number, const SENTENCE& sentence )
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| 48 | {
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| 49 | // Thanks go to Eric Parsonage (ericpa@mpx.com.au) for finding a nasty
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| 50 | // little bug that used to live here.
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| 51 |
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| 52 | double position = 0.0;
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| 53 |
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| 54 | position = sentence.Double( position_field_number );
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| 55 |
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| 56 | QString east_or_west;
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| 57 |
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| 58 | east_or_west = sentence.Field( east_or_west_field_number );
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| 59 |
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| 60 | Set( position, east_or_west.toLatin1() );
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| 61 | }
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| 62 |
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| 63 | void LONGITUDE::Set( double position, const char *east_or_west )
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| 64 | {
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| 65 | Longitude = position;
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| 66 | Coordinate = position;
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| 67 |
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| 68 | if ( east_or_west[ 0 ] == 'E' )
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| 69 | {
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| 70 | Easting = East;
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| 71 | }
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| 72 | else if ( east_or_west[ 0 ] == 'W' )
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| 73 | {
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| 74 | Easting = West;
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| 75 | }
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| 76 | else
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| 77 | {
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| 78 | Easting = EW_Unknown;
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| 79 | }
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| 80 | }
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| 81 |
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| 82 | void LONGITUDE::Write( SENTENCE& sentence )
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| 83 | {
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| 84 | char temp_string[ 80 ];
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| 85 |
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| 86 | ::sprintf( temp_string, "%08.2f", Longitude );
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| 87 | sentence += temp_string;
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| 88 |
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| 89 | if ( Easting == East )
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| 90 | {
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| 91 | sentence += "E";
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| 92 | }
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| 93 | else if ( Easting == West )
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| 94 | {
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| 95 | sentence += "W";
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| 96 | }
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| 97 | else
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| 98 | {
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| 99 | /*
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| 100 | ** Thanks to Jan-Erik Eriksson (Jan-Erik.Eriksson@st.se) for
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| 101 | ** finding and fixing a bug here
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| 102 | */
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| 103 |
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| 104 | sentence += "";
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| 105 | }
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| 106 | }
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| 107 |
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| 108 | const LONGITUDE& LONGITUDE::operator = ( const LONGITUDE& source )
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| 109 | {
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| 110 | Longitude = source.Longitude;
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| 111 | Easting = source.Easting;
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| 112 |
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| 113 | return( *this );
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| 114 | }
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