distance-between
wayland/gps/distance-between
Calculates distance in metres between two positions, both specified as signed decimal-degrees latitude and longitude. Uses great-circle distance computation for hypothetical sphere of radius 6372795 meters. Because Earth is no exact sphere, rounding errors may be up to 0.5%.
distance-between
@/distance-between
Calculates distance in metres between two positions, both specified as signed decimal-degrees latitude and longitude. Uses great-circle distance computation for hypothetical sphere of radius 6372795 meters. Because Earth is no exact sphere, rounding errors may be up to 0.5%.
Lat1number
Latititude (decimal degrees) of position one.
Long1number
Longitude (decimal degrees) of position one.
Lat2number
Latititude (decimal degrees) of position two.
Long2number
Longitude (decimal degrees) of position two.
Distnumber
Distance in metres.
C++ implementation
#pragma XOD dirtieness disable
#pragma XOD require "https://github.com/mikalhart/TinyGPSPlus"
#include <TinyGPSPlus.h>
node {
void evaluate(Context ctx) {
double lat1 = getValue<input_Lat1>(ctx);
double long1 = getValue<input_Long1>(ctx);
double lat2 = getValue<input_Lat2>(ctx);
double long2 = getValue<input_Long2>(ctx);
//distanceBetween is a static method, so we don't need an instance of the class TinyGPSPlus
emitValue<output_Dist>(ctx, TinyGPSPlus::distanceBetween(lat1, long1, lat2, long2));
}
}