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getDistanceBetweenCoordinates now response with 2 numbers after the decimal point

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Joe Küng
2023-04-23 15:15:25 +02:00
parent 9fdc599b7c
commit d7e4a8dd11
1 changed files with 4 additions and 24 deletions
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28
src/app/service/position.service.ts
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@@ -7,26 +7,7 @@ import {Cord} from "../interface/cord";
export class positionService{ export class positionService{
cord: Cord = { lat: 0, lon: 0 }; cord: Cord = { lat: 0, lon: 0 };
/*getDistanceBetweenCoordinates(lat1: number | undefined, lon1: number | undefined, lat2: number, lon2: number) { getDistanceBetweenCoordinates(lat1: number | undefined, lon1: number | undefined, lat2: number, lon2: number): number {
if (lat1 === undefined || lon1 === undefined) {
console.log('lat1 or lon1 is undefined')
return 0;
}else{
const earthRadius = 6371; // Radius of the earth in km
const dLat = this.deg2rad(lat2 - lat1); // deg2rad below
const dLon = this.deg2rad(lon2 - lon1);
const a =
Math.sin(dLat / 2) * Math.sin(dLat / 2) +
Math.cos(this.deg2rad(lat1)) * Math.cos(this.deg2rad(lat2)) *
Math.sin(dLon / 2) * Math.sin(dLon / 2)
;
const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
// Distance in km
return earthRadius * c;
}
}*/
getDistanceBetweenCoordinates(lat1: number | undefined, lon1: number | undefined, lat2: number, lon2: number): number{
if (lat1 === undefined || lon1 === undefined) { if (lat1 === undefined || lon1 === undefined) {
console.log('lat1 or lon1 is undefined') console.log('lat1 or lon1 is undefined')
return 0; return 0;
@@ -38,10 +19,11 @@ export class positionService{
Math.cos(this.deg2rad(lat1)) * Math.cos(this.deg2rad(lat2)) * Math.cos(this.deg2rad(lat1)) * Math.cos(this.deg2rad(lat2)) *
Math.sin(dLon / 2) * Math.sin(dLon / 2); Math.sin(dLon / 2) * Math.sin(dLon / 2);
const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a)); const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
return earthRadius * c; let num = earthRadius * c;
let numString = num.toFixed(2);
return parseFloat(numString);
} }
deg2rad(deg: number) { deg2rad(deg: number) {
return deg * (Math.PI / 180) return deg * (Math.PI / 180)
} }
@@ -66,6 +48,4 @@ export class positionService{
} }
}); });
} }
} }