static final double rad = Math.PI / 180;
static final double earth_radius = 6371.2 * 1000; /* in meters */
- AltosGreatCircle (double start_lat, double start_lon,
- double end_lat, double end_lon)
+ static int BEARING_LONG = 0;
+ static int BEARING_SHORT = 1;
+ static int BEARING_VOICE = 2;
+ String bearing_words(int length) {
+ String [][] bearing_string = {
+ {
+ "North", "North North East", "North East", "East North East",
+ "East", "East South East", "South East", "South South East",
+ "South", "South South West", "South West", "West South West",
+ "West", "West North West", "North West", "North North West"
+ }, {
+ "N", "NNE", "NE", "ENE",
+ "E", "ESE", "SE", "SSE",
+ "S", "SSW", "SW", "WSW",
+ "W", "WNW", "NW", "NNW"
+ }, {
+ "north", "nor nor east", "north east", "east nor east",
+ "east", "east sow east", "south east", "sow sow east",
+ "south", "sow sow west", "south west", "west sow west",
+ "west", "west nor west", "north west", "nor nor west "
+ }
+ };
+ return bearing_string[length][(int)((bearing / 90 * 8 + 1) / 2)%16];
+ }
+
+ public AltosGreatCircle (double start_lat, double start_lon,
+ double end_lat, double end_lon)
{
double lat1 = rad * start_lat;
double lon1 = rad * -start_lon;
distance = d * earth_radius;
bearing = course * 180/Math.PI;
}
+
+ public AltosGreatCircle(AltosGPS start, AltosGPS end) {
+ this(start.lat, start.lon, end.lat, end.lon);
+ }
+
+ public AltosGreatCircle() {
+ distance = 0;
+ bearing = 0;
+ }
}