package dk.daoas.fulddaekning;

public class GeoPoint {
	
	public double latitude;
	public double longitude;
	
	public GeoPoint() { //Default
	}
	
	public GeoPoint(double lat, double lng) { //Default
		latitude=lat;
		longitude=lng;
	}
	
	public static double beregnAfstand(GeoPoint point1, GeoPoint point2) {		
		//(62.8*sqrt(3.1*(Power(a.Latitude-x.Latitude,2)+Power(a.Longitude-x.Longitude,2)))) as Afstand,
		
		
		double pwrLat = Math.pow(point1.latitude  - point2.latitude, 2);
		double pwrLng = Math.pow(point1.longitude - point2.longitude, 2);
		
		return 62.8 * Math.sqrt( 3.1 * (pwrLat + pwrLng) );		
	}	
	
	
	//Latitude (horizonal), longitude(vertical) so
	// 1 degree latitude is ~ 111320 meters, since the distance between the horizonal lines is always the same 
	// 1 degree longitude is ~111320 meters at equator but gets shorter as we get closer to the poles.
	// so 1 degree longitude is 64.5 km at denmarks southern point (gedser=54.55,11.95)
	// and is 59.4km at northern point (skagen = 57.75,10.65)
	
	public static double kmToLatitude(double km) {
		return km / 111.320 ;
	}
	
	public static double kmToLongitude( double km) {//denne er kun ca
		return km / 62.0;
	}
}