Calculating distance between two points in Google Maps for Ionic 2
I am having a problem with this new feature that I have to implement in an application I am working on. Thus, the application works as follows; The user enters a point on the map by clicking a button and getting the latlng for the source. Another modal opens and then they have to do the same for the assignment. What I want to do is to calculate the distance between two points and show the route on the map. I tried to find tutorials on this but no luck. Does anyone know how to do this or do you have a working example repo that I can look at? It would be very helpful. Thank!
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Did you see it:
fooobar.com/questions/13112 / ...
function getDistanceFromLatLonInKm(lat1,lon1,lat2,lon2) {
var R = 6371; // Radius of the earth in km
var dLat = deg2rad(lat2-lat1); // deg2rad below
var dLon = deg2rad(lon2-lon1);
var a =
Math.sin(dLat/2) * Math.sin(dLat/2) +
Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) *
Math.sin(dLon/2) * Math.sin(dLon/2)
;
var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
var d = R * c; // Distance in km
return d;
}
function deg2rad(deg) {
return deg * (Math.PI/180)
}
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