unity编辑器扩展篇-图集拆分

要写一个属于自己的游戏demo，需要大量的美术资源和音频资源等等，但网上找到的美术资源大部分都是NGUI的图集，我希望能把图集拆开，变成一个个小小的Sprite。

代码如下

//导出单个精灵    [MenuItem("Assets/MyEditor/SingleSpritesExport &x")]    static void SingleSpritesExport()    {        string resourcesPath = "Assets/Resources/";        foreach (Object obj in Selection.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;                }                // 得到导出路径                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)                {                    // 创建导出文件夹                    string outPath = Application.dataPath + "/outSprite/" + loadPath;                    System.IO.Directory.CreateDirectory(outPath);                    foreach (Sprite sprite in sprites)                    {                        // 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(string.Format("Export {0} to {1}", loadPath, outPath));                }            }        }        Debug.Log("Export All Sprites Finished");    }

注意要把图集放到Resources文件下并勾选Read/Write Enable

拆分后