设置3D模型在2DUI界面中的显示，要设置所有的layer

Transform[] trans = obj.GetComponentsInChildren<Transform>();

foreach(Transform tran in trans){//遍历当前物体及其所有子物体

tran.gameObject.layer = LayerMask.NameToLayer( "UI" ) ;;//更改物体的Layer层

}

obj.transform.parent = heroinfo.Find( "parent" ) ;

obj.transform.localPosition = new Vector3( 0 , -30 , -150 ) ;

obj.transform.localScale = Vector3.one * 200 ;

obj.transform.localEulerAngles = new Vector3( 0 , 170 , 0 ) ;

obj.GetComponent<NavMeshAgent>().enabled = false ;
//隐藏寻路组件