src/marnav/ais/message_23.cpp

   1 #include <marnav/ais/message_23.hpp>
   2 #include <marnav/ais/angle.hpp>
   3 #include <algorithm>
   4 #include <cmath>
   5
   6 namespace marnav
   7 {
   8 namespace ais
   9 {
  10 constexpr message_id message_23::ID;
  11 constexpr std::size_t message_23::SIZE_BITS;
  12
  13 message_23::message_23()
  14         : message(ID)
  15 {
  16 }
  17
  18 message_23::message_23(const raw & bits)
  19         : message(ID)
  20 {
  21         if (bits.size() != SIZE_BITS)
  22                 throw std::invalid_argument{"invalid number of bits in message_23"};
  23         read_data(bits);
  24 }
  25
  26 void message_23::read_data(const raw & bits)
  27 {
  28         get(bits, repeat_indicator);
  29         get(bits, mmsi);
  30         get(bits, ne_lon);
  31         get(bits, ne_lat);
  32         get(bits, sw_lon);
  33         get(bits, sw_lat);
  34         get(bits, station_type);
  35         get(bits, shiptype);
  36         get(bits, txrx_mode);
  37         get(bits, interval);
  38         get(bits, quiet_time);
  39 }
  40
  41 raw message_23::get_data() const
  42 {
  43         raw bits(SIZE_BITS);
  44
  45         bits.set(type(), 0, 6);
  46         set(bits, repeat_indicator);
  47         set(bits, mmsi);
  48         set(bits, ne_lon);
  49         set(bits, ne_lat);
  50         set(bits, sw_lon);
  51         set(bits, sw_lat);
  52         set(bits, station_type);
  53         set(bits, shiptype);
  54         set(bits, txrx_mode);
  55         set(bits, interval);
  56         set(bits, quiet_time);
  57
  58         return bits;
  59 }
  60
  61 utils::optional<geo::position> message_23::get_position_ne() const
  62 {
  63         if ((ne_lat == latitude_not_available_short) || (ne_lon == longitude_not_available_short))
  64                 return utils::make_optional<geo::position>();
  65
  66         return utils::make_optional<geo::position>(
  67                 to_geo_latitude(ne_lat, ne_lat.count, angle_scale::I1),
  68                 to_geo_longitude(ne_lon, ne_lon.count, angle_scale::I1));
  69 }
  70
  71 utils::optional<geo::position> message_23::get_position_sw() const
  72 {
  73         if ((sw_lat == latitude_not_available_short) || (sw_lon == longitude_not_available_short))
  74                 return utils::make_optional<geo::position>();
  75
  76         return utils::make_optional<geo::position>(
  77                 to_geo_latitude(sw_lat, sw_lat.count, angle_scale::I1),
  78                 to_geo_longitude(sw_lon, sw_lon.count, angle_scale::I1));
  79 }
  80
  81 void message_23::set_position_ne(const geo::position & t) noexcept
  82 {
  83         ne_lat = to_latitude_minutes(t.lat(), ne_lat.count, angle_scale::I1);
  84         ne_lon = to_longitude_minutes(t.lon(), ne_lon.count, angle_scale::I1);
  85 }
  86
  87 void message_23::set_position_sw(const geo::position & t) noexcept
  88 {
  89         sw_lat = to_latitude_minutes(t.lat(), sw_lat.count, angle_scale::I1);
  90         sw_lon = to_longitude_minutes(t.lon(), sw_lon.count, angle_scale::I1);
  91 }
  92 }
  93 }