public static ILocation MoveTowards(this ILocation a, ILocation b, float distance)
{
float slope = (a.Top - b.Top) / (a.Left - b.Left);
bool forward = a.Left <= b.Left;
bool up = a.Top <= b.Top;
float abDistance = a.CalculateDistanceTo(b);
double angle = Math.Asin(Math.Abs(b.Top - a.Top) / abDistance);
float dy = (float)Math.Abs(distance * Math.Sin(angle));
float dx = (float)Math.Sqrt((distance * distance) - (dy * dy));
float x2 = forward ? a.Left + dx : a.Left - dx;
float y2 = up ? a.Top + dy : a.Top - dy;
var ret = Location.Create(x2, y2);
return(ret);
}
public static double CalculateDistanceTo(this ILocation locationFrom, ILocation locationTo)
{
return(locationFrom.CalculateDistanceTo(locationTo.Latitude, locationTo.Longitude));
}