e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
# SPDX-FileCopyrightText: 2022-2023 Blender Authors
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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from typing import Dict, Set
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import bpy
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from bpy.types import ID
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__all__ = (
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"get_id_reference_map",
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"get_all_referenced_ids",
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)
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def get_id_reference_map() -> Dict[ID, Set[ID]]:
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"""Return a dictionary of direct datablock references for every datablock in the blend file."""
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inv_map = {}
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for key, values in bpy.data.user_map().items():
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for value in values:
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if value == key:
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# So an object is not considered to be referencing itself.
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continue
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inv_map.setdefault(value, set()).add(key)
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return inv_map
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def recursive_get_referenced_ids(
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ref_map: Dict[ID, Set[ID]], id: ID, referenced_ids: Set, visited: Set
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):
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"""Recursively populate referenced_ids with IDs referenced by id."""
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if id in visited:
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# Avoid infinite recursion from circular references.
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return
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visited.add(id)
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for ref in ref_map.get(id, []):
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referenced_ids.add(ref)
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recursive_get_referenced_ids(
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ref_map=ref_map, id=ref, referenced_ids=referenced_ids, visited=visited
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)
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def get_all_referenced_ids(id: ID, ref_map: Dict[ID, Set[ID]]) -> Set[ID]:
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"""Return a set of IDs directly or indirectly referenced by id."""
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referenced_ids = set()
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recursive_get_referenced_ids(
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ref_map=ref_map, id=id, referenced_ids=referenced_ids, visited=set()
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)
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return referenced_ids
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