xNode/Scripts/NodeGroup.cs

using System.Collections.Generic;
using UnityEngine;

[CreateNodeMenu("Group")]
public class NodeGroup : Node {
    public int width = 400;
    public int height = 400;
    public Color color = new Color(1f, 1f, 1f, 0.1f);

    public override object GetValue(NodePort port) {
        return null;
    }

    /// <summary> Gets nodes in this group </summary>
    public List<Node> GetNodes() {
        List<Node> result = new List<Node>();
        foreach (Node node in graph.nodes) {
            if (node == this) continue;
            if (node == null) continue;
            if (node.position.x < this.position.x) continue;
            if (node.position.y < this.position.y) continue;
            if (node.position.x > this.position.x + width) continue;
            if (node.position.y > this.position.y + height + 30) continue;
            result.Add(node);
        }
        return result;
    }
}