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Fix T90268: Mesh.from_pydata error using numpy array for edges/faces 

Technically not a bug but worth supporting.
This commit is contained in:
Campbell Barton 2021-08-10 17:50:01 +10:00
parent 61040a36aa
commit 7c2c66cdb8
Notes: blender-bot 2023-02-14 03:46:57 +01:00 
Referenced by issue #90268, Mesh.from_pydata error if using numpy array for edges, faces
1 changed files with 12 additions and 7 deletions
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19
release/scripts/modules/bpy_types.py
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@ -477,29 +477,34 @@ class Mesh(bpy_types.ID):
face_lengths = tuple(map(len, faces))
self.vertices.add(len(vertices))
self.edges.add(len(edges))
# NOTE: check non-empty lists by length because of how `numpy` handles truth tests, see: T90268.
vertices_len = len(vertices)
edges_len = len(edges)
faces_len = len(faces)
self.vertices.add(vertices_len)
self.edges.add(edges_len)
self.loops.add(sum(face_lengths))
self.polygons.add(len(faces))
self.polygons.add(faces_len)
self.vertices.foreach_set("co", tuple(chain.from_iterable(vertices)))
self.edges.foreach_set("vertices", tuple(chain.from_iterable(edges)))
vertex_indices = tuple(chain.from_iterable(faces))
loop_starts = tuple(islice(chain([0], accumulate(face_lengths)), len(faces)))
loop_starts = tuple(islice(chain([0], accumulate(face_lengths)), faces_len))
self.polygons.foreach_set("loop_total", face_lengths)
self.polygons.foreach_set("loop_start", loop_starts)
self.polygons.foreach_set("vertices", vertex_indices)
if edges or faces:
if edges_len or faces_len:
self.update(
# Needed to either:
# - Calculate edges that don't exist for polygons.
# - Assign edges to polygon loops.
calc_edges=bool(faces),
calc_edges=bool(faces_len),
# Flag loose edges.
calc_edges_loose=bool(edges),
calc_edges_loose=bool(edges_len),
)
@property