Unity3D实现播放gif图功能

Unity是不识别Gif格式图的，需要我们使⽤c#将gif⾥多帧图转化为Texture2D格式。需要使⽤System.Drawing.dll.此dll在unity安装⽬录下就可以找到。由于unity没有gif格式的⽂件，所以我们⽆法在⾯板指定，需要动态加载。所以将gif图放在StreamingAssets⽂件夹下。以下为源代码：

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 tex2DList = new List(); 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().material.mainTexture = tex2DList[index]; } } }

private List MyGif(System.Drawing.Image image) {

List tex = new List(); 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; } }}

以上就是本⽂的全部内容，希望对⼤家的学习有所帮助，也希望⼤家多多⽀持。