Algorithms.KdTree.Contains C# (CSharp) Метод

        private bool Contains(KdNode node, double x, double y) {
            if (node == null) {
                return false;
            }
            if (node.X.Equals(x) && node.Y.Equals(y)) {
                return true;
            }
            if (node.Vertical && x < node.X || !node.Vertical && y < node.Y) {
                return Contains(node.Left, x, y);
            }
            return Contains(node.Right, x, y);
        }