Unity 切割导出精灵

usingUnityEngine;
usingUnityEditor;
public classSpriteTailed:MonoBehaviour
{
    [MenuItem("Tools/导出精灵")]
    static voidSaveSprite()
    {
        string resourcesPath = "Assets/Resources/";
        foreach (Object obj inSelection.objects)
        {
            string selectionPath =AssetDatabase.GetAssetPath(obj);
            //必须最上级是"Assets/Resources/"
            if(selectionPath.StartsWith(resourcesPath))
            {
                string selectionExt =System.IO.Path.GetExtension(selectionPath);
                if (selectionExt.Length == 0)
                {
                    continue;
                }
                //从路径"Assets/Resources/Sprite/number.png"得到路径"Sprite/number"
                string loadPath = selectionPath.Remove(selectionPath.Length -selectionExt.Length);
                loadPath =loadPath.Substring(resourcesPath.Length);
                //加载此文件下的所有资源
                Sprite[] sprites = Resources.LoadAll<Sprite>(loadPath);
                if (sprites.Length > 0)
                {
                    Debug.Log(sprites.Length);
                    //创建导出文件夹
                    string outPath = Application.dataPath + "/outSprite/" +loadPath;
                    System.IO.Directory.CreateDirectory(outPath);
                    foreach (Sprite sprite insprites)
                    {
                        Debug.Log("Export Sprite：" +sprite.name);
                        //创建单独的纹理
                        Texture2D tex = new Texture2D((int)sprite.rect.width, (int)sprite.rect.height, sprite.texture.format, false);
                        tex.SetPixels(sprite.texture.GetPixels((int)sprite.rect.xMin, (int)sprite.rect.yMin,
                                                               (int)sprite.rect.width, (int)sprite.rect.height));
                        tex.Apply();
                        //写入成PNG文件
                        System.IO.File.WriteAllBytes(outPath + "/" + sprite.name + ".png", tex.EncodeToPNG());
                    }
                    Debug.Log("SaveSprite to " +outPath);
                }
            }
        }
        Debug.Log("SaveSprite Finished");
    }
}