PolyCollider.AddPoint C# (CSharp) Method

    public int AddPoint(Vector2 point, int insertPoint)
    {
		if (insertPoint < 0 || insertPoint > _points.Count - 1)
        {
            Vector3 p = transform.InverseTransformPoint(point.ToVector3(_yPosition));
            Vector2 pos = new Vector2(p.x, p.z);

            KeyValuePair<Vector2, Vector2> values = new KeyValuePair<Vector2,Vector2>(pos, pos);
			_startEndPoints.Add(values);

			_points.Add(pos);
        }
        else
        {
            Vector3 p = transform.InverseTransformPoint(point.ToVector3(_yPosition));
            Vector2 pos = new Vector2(p.x, p.z);

            KeyValuePair<Vector2, Vector2> values = new KeyValuePair<Vector2, Vector2>(pos, pos);
			_startEndPoints.Insert(insertPoint, values);

			_points.Insert(insertPoint, pos);
        }

		return (insertPoint < 0 || insertPoint > _points.Count - 1) ? _points.Count - 1 : insertPoint;
    }