So many lightmaps

Hi guys , i'm working on some problems:
1.i want use this code below to switch lightmap in my scene

public Texture2D lightmap1;

LightmapData data=new LightmapData();

data.lightmapColor=lightmap1;

LightmapSettings.Lightmaps=new LightmapData[1]{data};

2.but there is a problem. there are three lightmaps in my lightmap folder,which should i use in the code?

 

If you want to switch lightmaps (for different lighting conditions or something I assume?), you need to change all three.

 

thanks for reply ,but I'm still confused , should I create a array contains all three lightmaps then give it to lighmapsettings.lightmaps? And what about the index of lightmaps?

 

Study (or use?) this tool : https://github.com/laurenth-unity/lightmap-switching-tool

 

Update:
Fixed!

using UnityEngine;



public class LightMapSwitch : MonoBehaviour

{



    public Texture2D[] dayMap;

    public Texture2D[] NightMap;

    private void OnGUI()

    {

        if (GUILayout.Button("<size=50>day</size>"))

        {

            foreach(Texture2D tex in dayMap)

            {

                Debug.Log(tex.ToString());

            }

            LightmapData[] datas = new LightmapData[3];

            for (int i= 0; i < datas.Length; i++)

            {

               LightmapData data= new LightmapData();

                data.lightmapColor = dayMap[i];

                datas[i] = data;

                

            }

            LightmapSettings.lightmaps = datas;

        }

        if (GUILayout.Button("<size=50>Night</size>"))

        {

            LightmapData[] datas = new LightmapData[3];

            for (int i = 0; i < datas.Length; i++)

            {

                LightmapData data = new LightmapData();

                data.lightmapColor = NightMap[i];

                datas[i] = data;

            }

            LightmapSettings.lightmaps =datas;

        }

    }



}