src/marnav/nmea/bwc.cpp

   1 #include <marnav/nmea/bwc.hpp>
   2 #include "convert.hpp"
   3 #include "checks.hpp"
   4 #include <marnav/nmea/io.hpp>
   5
   6 namespace marnav
   7 {
   8 namespace nmea
   9 {
  10 constexpr sentence_id bwc::ID;
  11 constexpr const char * bwc::TAG;
  12
  13 bwc::bwc()
  14         : sentence(ID, TAG, talker::global_positioning_system)
  15 {
  16 }
  17
  18 bwc::bwc(talker talk, fields::const_iterator first, fields::const_iterator last)
  19         : sentence(ID, TAG, talk)
  20 {
  21         const auto size = std::distance(first, last);
  22         if ((size != 12) && (size != 13))
  23                 throw std::invalid_argument{"invalid number of fields in bwc"};
  24
  25         utils::optional<unit::distance> distance_unit;
  26
  27         read(*(first + 0), time_utc_);
  28         read(*(first + 1), lat_);
  29         read(*(first + 2), lat_hem_);
  30         read(*(first + 3), lon_);
  31         read(*(first + 4), lon_hem_);
  32         read(*(first + 5), bearing_true_);
  33         read(*(first + 6), bearing_true_ref_);
  34         read(*(first + 7), bearing_mag_);
  35         read(*(first + 8), bearing_mag_ref_);
  36         read(*(first + 9), distance_);
  37         read(*(first + 10), distance_unit);
  38         read(*(first + 11), waypoint_id_);
  39
  40         if (size == 13)
  41                 read(*(first + 12), mode_ind_);
  42
  43         // instead of reading data into temporary lat/lon, let's correct values afterwards
  44         lat_ = correct_hemisphere(lat_, lat_hem_);
  45         lon_ = correct_hemisphere(lon_, lon_hem_);
  46
  47         check_value(distance_unit, {unit::distance::nm}, "distance nautical miles unit");
  48 }
  49
  50 utils::optional<geo::longitude> bwc::get_lon() const
  51 {
  52         return (lon_ && lon_hem_) ? lon_ : utils::optional<geo::longitude>{};
  53 }
  54
  55 utils::optional<geo::latitude> bwc::get_lat() const
  56 {
  57         return (lat_ && lat_hem_) ? lat_ : utils::optional<geo::latitude>{};
  58 }
  59
  60 void bwc::set_lat(const geo::latitude & t)
  61 {
  62         lat_ = t;
  63         lat_hem_ = convert_hemisphere(t);
  64 }
  65
  66 void bwc::set_lon(const geo::longitude & t)
  67 {
  68         lon_ = t;
  69         lon_hem_ = convert_hemisphere(t);
  70 }
  71
  72 void bwc::set_bearing_true(double t) noexcept
  73 {
  74         bearing_true_ = t;
  75         bearing_true_ref_ = reference::TRUE;
  76 }
  77
  78 void bwc::set_bearing_mag(double t) noexcept
  79 {
  80         bearing_mag_ = t;
  81         bearing_mag_ref_ = reference::MAGNETIC;
  82 }
  83
  84 utils::optional<units::length> bwc::get_distance() const
  85 {
  86         if (!distance_)
  87                 return {};
  88         return {*distance_};
  89 }
  90
  91 void bwc::set_distance(units::length t)
  92 {
  93         if (t.value() < 0.0)
  94                 throw std::invalid_argument{"invalid argument, distance less than zero"};
  95         distance_ = t.get<units::nautical_miles>();
  96 }
  97
  98 void bwc::append_data_to(std::string & s) const
  99 {
 100         append(s, to_string(time_utc_));
 101         append(s, to_string(lat_));
 102         append(s, to_string(lat_hem_));
 103         append(s, to_string(lon_));
 104         append(s, to_string(lon_hem_));
 105         append(s, to_string(bearing_true_));
 106         append(s, to_string(bearing_true_ref_));
 107         append(s, to_string(bearing_mag_));
 108         append(s, to_string(bearing_mag_ref_));
 109         append(s, to_string(distance_));
 110         append(s, to_string_if(unit::distance::nm, distance_));
 111         append(s, to_string(waypoint_id_));
 112         append(s, to_string(mode_ind_));
 113 }
 114 }
 115 }