public static GameObject LoadOBJFile(string fn, LoadOBJCompleteCallback cb = null, bool updataIsReady = true)
{
if (loaderOBJ == null)
{
loaderOBJ = new GameObject("Loader");
loaderOBJ.hideFlags = HideFlags.HideInHierarchy;
}
OBJLoader loader = loaderOBJ.AddComponent <OBJLoader>();
loader._Load(fn, cb, updataIsReady);
return(loader.returnObject);
}