Gizmoの表示状態をスクリプトから制御する

GizmoUtilitySample.cs

using System.Collections.Generic;
using UnityEditor;
using UnityEngine;
using UnityEngine.SceneManagement;

public class GizmoUtilitySample : MonoBehaviour
{
    GameObject[] gameObjects;
    List<GizmoInfo> gizmoInfos = new List<GizmoInfo>();

    void Start()
    {
        gameObjects = SceneManager.GetActiveScene().GetRootGameObjects();    
        foreach (GameObject go in gameObjects)
        {
            foreach (var component in go.GetComponents<Component>())
            {
                if (GizmoUtility.TryGetGizmoInfo(component.GetType(), out GizmoInfo info))
                {
                    gizmoInfos.Add(info);
                }
            }
        }
    }

    public void EnableAllGizmo()
    {
        foreach (GizmoInfo info in gizmoInfos)
        {
            info.gizmoEnabled = true;
            GizmoUtility.ApplyGizmoInfo(info);
        }
    }

    public void DisableAllGizmo()
    {
        foreach (GizmoInfo info in gizmoInfos)
        {
            info.gizmoEnabled = false;
            GizmoUtility.ApplyGizmoInfo(info);
        }
    }

    public void DisableLightAndCamera()
    {
        foreach (GizmoInfo info in gizmoInfos)
        {
            if (info.name == nameof(Camera) || info.name == nameof(Light))
            {
                info.gizmoEnabled = false;
                GizmoUtility.ApplyGizmoInfo(info);
            }
        }
    }
}

[CustomEditor(typeof(GizmoUtilitySample))]
public class GizmoUtiltySampleEditor : Editor
{
    public override void OnInspectorGUI()
    {
        base.OnInspectorGUI();

        var gizmoUtilitySample = (GizmoUtilitySample)target;
        if(GUILayout.Button("Enable All Gizmos"))
        {
            gizmoUtilitySample.EnableAllGizmo();
        }

        if(GUILayout.Button("Disable All Gizmos"))
        {
            gizmoUtilitySample.DisableAllGizmo();
        }

        if (GUILayout.Button("Disable Light And Camera Gizmos"))
        {
            gizmoUtilitySample.DisableLightAndCamera();
        }
    }
}