基于全球切片解析标准TMS的瓦片规则

https://blog.csdn.net/mrib/article/details/117951332#%E5%9F%BA%E4%BA%8Ewgs84%E7%BB%8F%E7%BA%AC%E5%BA%A6%E6%8A%95%E5%BD%B1%E7%9A%84%E6%A0%87%E5%87%86tms%E7%93%A6%E7%89%87%E8%A7%84%E5%88%99