Unity3D实现播放gif图功能

using System;using System.Collections;using System.Collections.Generic;using System.Drawing;using System.Drawing.Imaging;using System.IO;using UnityEngine; public class PlayGif : MonoBehaviour {   public UnityEngine.UI.Image Im;  public string gifName = "";  public GameObject[] Ims;  [SerializeField]  private float fps = 5f;  private List<Texture2D> tex2DList = new List<Texture2D>();  private float time;  Bitmap mybitmp;  void Start()  {    System.Drawing.Image image = System.Drawing.Image.FromFile(Application.streamingAssetsPath + "/"+gifName+".gif");    tex2DList = MyGif(image);  }   // Update is called once per frame  void Update()  {    if (tex2DList.Count > 0)    {      time += Time.deltaTime;      int index = (int)(time * fps) % tex2DList.Count;      if (Im != null)      {        Im.sprite = Sprite.Create(tex2DList[index], new Rect(0, 0, tex2DList[index].width, tex2DList[index].height), new Vector2(0.5f, 0.5f));      }      if (Ims.Length != 0)      {        for (int i = 0; i < Ims.Length; i++)          Ims[i].GetComponent<Renderer>().material.mainTexture = tex2DList[index];       }    }  }  private List<Texture2D> MyGif(System.Drawing.Image image)  {     List<Texture2D> tex = new List<Texture2D>();    if (image != null)    {       //Debug.Log("图片张数：" + image.FrameDimensionsList.Length);      FrameDimension frame = new FrameDimension(image.FrameDimensionsList[0]);      int framCount = image.GetFrameCount(frame);//获取维度帧数      for (int i = 0; i < framCount; ++i)      {         image.SelectActiveFrame(frame, i);        Bitmap framBitmap = new Bitmap(image.Width, image.Height);        using (System.Drawing.Graphics graphic = System.Drawing.Graphics.FromImage(framBitmap))        {          graphic.DrawImage(image, Point.Empty);        }        Texture2D frameTexture2D = new Texture2D(framBitmap.Width, framBitmap.Height, TextureFormat.ARGB32, true);        frameTexture2D.LoadImage(Bitmap2Byte(framBitmap));        tex.Add(frameTexture2D);      }    }    return tex;  }  private byte[] Bitmap2Byte(Bitmap bitmap)  {    using (MemoryStream stream = new MemoryStream())    {      // 将bitmap 以png格式保存到流中      bitmap.Save(stream, ImageFormat.Png);      // 创建一个字节数组，长度为流的长度      byte[] data = new byte[stream.Length];      // 重置指针      stream.Seek(0, SeekOrigin.Begin);      // 从流读取字节块存入data中      stream.Read(data, 0, Convert.ToInt32(stream.Length));      return data;    }  }}