Created
April 27, 2014 19:03
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C# distance between two points (c# ile mesafe hesaplama)
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// @yasinkuyu | |
// 27/04/2014 | |
public static double Distance(double lat1, double lon1, double lat2, double lon2, char unit) | |
{ | |
Func<double, double> deg2Rad = (x) => (x * (Math.PI / 180)); | |
Func<double, double> rad2Deg = (x) => (x / Math.PI * 180.0); | |
var theta = lon1 - lon2; | |
var dist = Math.Sin(deg2Rad(lat1)) * Math.Sin(deg2Rad(lat2)) + Math.Cos(deg2Rad(lat1)) * Math.Cos(deg2Rad(lat2)) * Math.Cos(deg2Rad(theta)); | |
dist = Math.Acos(dist); | |
dist = rad2Deg(dist); | |
dist = dist * 60 * 1.1515; | |
switch (unit) | |
{ | |
case 'K': | |
dist = dist * 1.609344; | |
break; | |
case 'N': | |
dist = dist * 0.8684; | |
break; | |
} | |
return (dist); | |
} | |
Sample | |
Response.Write(Distance(32.9697, -96.80322, 29.46786, -98.53506, 'M') + " Miles<br>"); | |
Response.Write(Distance(32.9697, -96.80322, 29.46786, -98.53506, 'K') + " Kilometers<br>"); | |
Response.Write(Distance(32.9697, -96.80322, 29.46786, -98.53506, 'N') + " Nautical Miles<br>"); | |
//Output | |
//262,677793805435 Miles | |
//422,738931394014 Kilometers | |
//228,10939614064 Nautical Miles |
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