zorder-13.py

def calculate_data_zorder_placement(items: List[DataItem]):
    files = {}
    for index, item in enumerate(items):
        x, y = item.x, item.y
        xb = f"{x:>03b}"
        yb = f"{y:>03b}"
        interleaved = f"{yb[0]}{xb[0]}{yb[1]}{xb[1]}{yb[2]}{xb[2]}"
        zorder = int(interleaved, 2)
        file_placement = zorder // 4
        if not file_placement in files:
            files[file_placement] = FileInfo([])
        file = files[file_placement]
        file.items.append(item)
        adjust_file_info(file, item)
        
    return files
zorder_organised_files = calculate_data_zorder_placement(items)
pprint(zorder_organised_files)