Up自制Unity预制脚本pictureSpawner.cs

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using System.IO;

public class pictureSpawner : MonoBehaviour

{

    public string mainFolder;

    string[] folders;     

    string folderName;

    public FileInfo[] fileNames;

    DirectoryInfo folder;

    float gap = 1.0f;

    public float deltaGap=0.1f;

    public float scale = 1.5f;

    FileStream fileStream;

    Texture2D texture;

    byte[] bytes;

    GameObject pointer;

    public GameObject pictureBoard;

    // Start is called before the first frame update

    void Start()

    {

        folders=Directory.GetDirectories(mainFolder, "*", SearchOption.AllDirectories);

        SpawnFolders(mainFolder);

        foreach(string i in folders)

        {

            SpawnFolders(i);

        }     

    }

    // Update is called once per frame

    void Update()

    {

        

    }

    void LoadFile(string tempInput)

    {

        fileStream = new FileStream(tempInput, FileMode.Open, FileAccess.Read);

        fileStream.Seek(0, SeekOrigin.Begin);

        bytes = new byte[fileStream.Length];

        fileStream.Read(bytes, 0, (int)fileStream.Length);

        fileStream.Close();

        texture = new Texture2D(100, 100, TextureFormat.ETC2_RGB , false);

        //此处设置优化格式为ETC2_RGB,不一定是最优化的格式，后期有机会找个更好的。

        texture.LoadImage(bytes);

        bytes = null;

    }

    

    void PictureBoardSpawn(string tempName)

    {        

        pointer = Instantiate(pictureBoard, new Vector3(transform.position.x+gap, transform.position.y+1, transform.position.z), transform.rotation);

        pointer.transform.localScale = new Vector3(texture.width * 0.001f*scale, 1, texture.height * 0.001f*scale);

        pointer.transform.name = tempName;

        gap += deltaGap;

        //pointer.GetComponent<Renderer>().material.SetTexture("_MainTex", texture);

        //配合无光照模式用。也就是图片不受光照影响。

        pointer.GetComponent<Renderer>().material.mainTexture = texture;

        texture = null;   

        pointer.transform.localScale = new Vector3(pointer.transform.localScale.x * 0.1f, 1, pointer.transform.localScale.z * 0.1f);

        pointer.transform.parent = this.transform;

    }

    void SpawnFolders(string tempFolderName)

    {

        folder = new DirectoryInfo(tempFolderName);

        fileNames = folder.GetFiles("*");

        if (fileNames.Length > 0)

        {

            foreach (FileInfo temp in fileNames)

            {

                LoadFile(temp.ToString());

                PictureBoardSpawn(temp.ToString());

            }

            fileStream.Dispose();

        }

    }

}