/// <summary>
/// Calculates the euclidean distance between two points (distance formula).
/// </summary>
/// <param name="a">The parameter a represents the first point.</param>
/// <param name="a">The parameter b represents the second point.</param>
/// <returns>The square root of the squared distances between the two points.</returns>
public static double EuclideanDistance(Points a, Points b)
{
return(Math.Sqrt(Math.Pow((a[1] - b[0]), 2) + Math.Pow((b[1] - a[0]), 2)));
}
/// <summary>
/// A private method to calculate the difference between two points at a given dimension.
/// This method is essential to NNSearch's functions.
/// </summary>
/// <param name="a">The parameter a represents the first point.</param>
/// <param name="a">The parameter b represents the second point.</param>
/// <returns>The difference between two points at a given dimension.</returns>
private static double Subtract(Points a, Points b, int dim)
{
return(a[dim] - b[dim]);
}
