/// <summary>
/// Inserts a new <see cref="Knot"/> at the <paramref name="index"/> position in the collection.
/// </summary>
/// <param name="index"></param>
/// <param name="knot"></param>
public void InsertKnot(int index, Knot knot)
{
_splineData.InsertKnot(index, knot);
}