This recipe requires some knowledge of custom editor scripting and an understanding of implementing the points of visibility graph representation. Also, it is worth mentioning that the script instantiates a CustomNavMesh game object automatically in the scene and it requires a prefab to be assigned, just like any other graph representation.

Finally, it's important to create the following class, deriving from GraphVisibility:

using UnityEngine; 
using System.Collections; 
using System.Collections.Generic; 
 
public class CustomNavMesh : GraphVisibility 
{ 
    public override void Start() 
    { 
        instIdToId = new Dictionary<int, int>(); 
    }    
}