/// <summary>
/// Get distance.
/// </summary>
/// <param name="point"> point </param>
/// <returns> Distance between 2 points </returns>
public double GetDistance(PointS point)
{
double dx = X - point.X;
double dy = Y - point.Y;
return(Math.Sqrt(dx * dx + dy * dy));
}
// Constructor.
public SetOfMassPoint(IEnumerable <MassPoint> collection, PointS point, double rad)
{
_set = collection.Where(mp => mp.Center.GetDistance(point) <= rad).ToList();
Radius = rad;
}
// Constructor.
public SetOfMassPoints(List <MassPoint> massPoints, PointS point, double radius)
{
SpecialSetMassPoints = massPoints.FindAll(
el => el.Coordinates.GetDistance(point) <= radius);
}
/// <summary>
/// Implementation IComparable.
/// </summary>
/// <param name="otherPoint"> Other point </param>
/// <returns> -1, 0, or 1</returns>
public int CompareTo(object otherPoint)
{
var temp = new PointS(0, 0);
return(((PointS)otherPoint).GetDistance(temp).CompareTo(GetDistance(temp)));
}