def get_tianditu_info(rect_pts, zoom):
"""
根据经纬度计算行列号
:param rect_pts: 矩形框坐标 例[a,b,c,d]左上点，右下点
:param zoom:地图层级
:return:
"""
resolution = {18: 5.36441802978515E-06,
17: 1.07288360595703E-05,
16: 2.1457672119140625E-05,
15: 4.29153442382814E-05,
14: 8.58306884765629E-05,
13: 0.000171661376953125,
12: 0.00034332275390625,
11: 0.0006866455078125,
10: 0.001373291015625,
9: 0.00274658203125,
8: 0.0054931640625,
7: 0.010986328125,
6: 0.02197265625,
5: 0.0439453125,
4: 0.087890625,
3: 0.17578125,
2: 0.3515625,
1: 0.703125}
# 经纬度反算切片行列号
start_x = math.floor((rect_pts[0] + 180.0) / (resolution[zoom] * 256))
start_y = math.floor((90.0 - rect_pts[1]) / (resolution[zoom] * 256))
end_x = math.ceil((rect_pts[2] + 180.0) / (resolution[zoom] * 256))
end_y = math.ceil((90.0 - rect_pts[3]) / (resolution[zoom] * 256))
result = [start_x, start_y, end_x, end_y]
return result
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