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| import math | |
| def deg2num(lat_deg, lon_deg, zoom): | |
| lat_rad = math.radians(lat_deg) | |
| n = 2.0 ** zoom | |
| xtile = int((lon_deg + 180.0) / 360.0 * n) | |
| ytile = int((1.0 - math.asinh(math.tan(lat_rad)) / math.pi) / 2.0 * n) | |
| return (xtile, ytile) |
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| def getTotalTileCount(leftBottom, rightTop, fromZoom, toZoom): | |
| totalTileCount = 0 | |
| for zoom in range(fromZoom, toZoom + 1): | |
| leftBottomTiles = deg2num(leftBottom, zoom) | |
| rightTopTiles = deg2num(rightTop, zoom) | |
| currentTileCount = (rightTopTiles[0] - leftBottomTiles[0] + 1) * (leftBottomTiles[1] - rightTopTiles[1] + 1) | |
| print("zoom = " + str(zoom) + ", leftBottomTiles = " + str(leftBottomTiles) + | |
| ", rightTopTiles = " + str(rightTopTiles) + ", tileCount = " + str(currentTileCount)) | |
| totalTileCount += currentTileCount | |
| return totalTileCount |
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