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python writer: fix logical error when a packed leaf directory overflows [#37]

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Brandon Liu
2022-03-20 18:20:56 +08:00
parent a32947688a
commit df8256f10b
2 changed files with 28 additions and 2 deletions
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python/pmtiles/writer.py
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@@ -39,14 +39,13 @@ def make_pyramid(tile_entries,start_leaf_offset,max_dir_size=21845):
for group in itertools.groupby(entries_in_leaves,key=by_parent):
subpyramid_entries = list(group[1])
root = subpyramid_entries[0]
if len(packed_entries) + len(subpyramid_entries) <= max_dir_size:
# the first item MUST be the root of the pyramid (sorted) - but it may have multiple roots
root = subpyramid_entries[0]
packed_entries.extend(subpyramid_entries)
packed_roots.append((root.z,root.x,root.y))
else:
# flush the current packed entries
root = packed_entries[0]
for p in packed_roots:
root_entries.append(Entry(p[0],p[1],p[2],current_offset,17 * len(packed_entries),True))