/// <summary>
 /// Creates a new two-dimensional vector from the vector created between two points.
 /// </summary>
 /// <param name="source">Point the vector starts at.</param>
 /// <param name="dest">Point the vector ends at.</param>
 public Vector2D(Point2D source, Point2D dest)
 {
     throw new NotImplementedException();
 }
 /// <summary>
 /// Creates a new two-dimensional vector from x and y magnitudes.
 /// </summary>
 /// <param name="point">X and Y magnitudes.</param>
 public Vector2D(Point2D point)
 {
     throw new NotImplementedException();
 }