public double?GetElevationDifFrom(GpxPoint other)
{
if (Elevation == null && other.Elevation == null)
{
return(null);
}
return(Elevation - other.Elevation);
}
public GpxPointCollection <GpxPoint> ToGpxPoints()
{
GpxPointCollection <GpxPoint> points = new GpxPointCollection <GpxPoint>();
foreach (T gpxPoint in Points_)
{
GpxPoint point = new GpxPoint
{
Longitude = gpxPoint.Longitude,
Latitude = gpxPoint.Latitude,
Elevation = gpxPoint.Elevation,
Time = gpxPoint.Time
};
points.Add(point);
}
return(points);
}
public double GetDistanceFrom(GpxPoint other)
{
double thisLatitude = this.Latitude;
double otherLatitude = other.Latitude;
double thisLongitude = this.Longitude;
double otherLongitude = other.Longitude;
double deltaLatitude = Math.Abs(this.Latitude - other.Latitude);
double deltaLongitude = Math.Abs(this.Longitude - other.Longitude);
thisLatitude *= RADIAN;
otherLatitude *= RADIAN;
deltaLongitude *= RADIAN;
double cos = Math.Cos(deltaLongitude) * Math.Cos(thisLatitude) * Math.Cos(otherLatitude) +
Math.Sin(thisLatitude) * Math.Sin(otherLatitude);
return(EARTH_RADIUS * Math.Acos(cos > 1 ? 1 : cos));
}