C中2个纬度/经度点之间的方向＃

Question

我有Lat Long格式的2个坐标。

如何从A点（如纽约37.149472，-95.509544）确定度到B点（如多伦多40.714269，-74.005973）方向

我正在寻找像“340度的值“

在C＃中，如果你看看

Answer 1

如果你想有一个恒定的轴承跟着你不想你想要一个恒向线为

static double DegreeBearing(
    double lat1, double lon1, 
    double lat2, double lon2) 
{ 
    var dLon = ToRad(lon2-lon1); 
    var dPhi = Math.Log(
     Math.Tan(ToRad(lat2)/2+Math.PI/4)/Math.Tan(ToRad(lat1)/2+Math.PI/4)); 
    if (Math.Abs(dLon) > Math.PI) 
     dLon = dLon > 0 ? -(2*Math.PI-dLon) : (2*Math.PI+dLon); 
    return ToBearing(Math.Atan2(dLon, dPhi)); 
} 

public static double ToRad(double degrees) 
{ 
    return degrees * (Math.PI/180); 
} 

public static double ToDegrees(double radians) 
{ 
    return radians * 180/Math.PI; 
} 

public static double ToBearing(double radians) 
{ 
    // convert radians to degrees (as bearing: 0...360) 
    return (ToDegrees(radians) +360) % 360; 
} 

// verify against the website example 
DegreeBearing(50.36389,-4.15694,42.35111,-71.04083); 

Answer 2

在http://www.movable-type.co.uk/scripts/latlong.html它的JavaScript可以改写为C＃。