3bcfb151c1
Replace plain-text type information with the type syntax used for Python's type annotations as it's more concise, especially for callbacks which often didn't include useful type information. Note that this change only applies to inline doc-strings, generated doc-strings from RNA need to be updated separately. Details: - Many minor corrections were made when "list" was incorrectly used instead of "sequence". - Some type information wasn't defined in the doc-strings and has been added. - Verbose type info would benefit from support for type aliases.
57 lines
1.6 KiB
Python
57 lines
1.6 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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__all__ = (
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"bmesh_linked_uv_islands",
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)
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def match_uv(face, vert, uv, uv_layer):
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for loop in face.loops:
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if loop.vert == vert:
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return uv == loop[uv_layer].uv
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return False
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def bmesh_linked_uv_islands(bm, uv_layer):
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"""
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Returns lists of faces connected by UV islands.
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For meshes use :class:`bpy.types.Mesh.mesh_linked_uv_islands` instead.
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:arg bm: the bmesh used to group with.
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:type bmesh: :class:`BMesh`
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:arg uv_layer: the UV layer to source UVs from.
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:type bmesh: :class:`BMLayerItem`
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:return: list of lists containing polygon indices
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:rtype: list[list[int]]
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"""
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result = []
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used = set()
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for seed_face in bm.faces:
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if seed_face in used:
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continue # Face has already been processed.
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used.add(seed_face)
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island = [seed_face]
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stack = [seed_face] # Faces still to consider on this island.
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while stack:
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current_face = stack.pop()
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for loop in current_face.loops:
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v = loop.vert
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uv = loop[uv_layer].uv
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for f in v.link_faces:
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if f is current_face or f in used:
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continue
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if not match_uv(f, v, uv, uv_layer):
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continue
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# `f` is part of island, add to island and stack
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used.add(f)
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island.append(f)
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stack.append(f)
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result.append(island)
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return result
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