private void GenerateBgTile(int mapValue, int gridX, int gridY)
{
//NTODO bgTile外显的计算
//形容下bgTile的特殊处
//left，down，right都有方块时，具体的ui取决与bgTile是否在边缘，
var go = TileFactory.CreateBGTile(1);
var trm = go.transform;
go.transform.SetParent(bgTileRoot, false);
Vector3 pos = layout.TileStartPos;
float offx = gridX * layout.TileW;
float offy = gridY * layout.TileH;
pos.x = pos.x + offx;
pos.y = pos.y - offy;
pos.z = 0;
trm.position = pos;
trm.localScale = Vector3.one * layout.Scale;
}