def truncate_collection(target: T.bpy_prop_collection,
proxy: Union[StructCollectionProxy,
AosProxy], context: Context):
""""""
if not hasattr(target, "bl_rna"):
return
target_rna = target.bl_rna
if any(isinstance(target_rna, t) for t in always_clear):
target.clear()
return
if isinstance(target_rna, _resize_geometry_types):
existing_length = len(target)
incoming_length = proxy.length
if existing_length != incoming_length:
if existing_length != 0:
logger.error(f"resize_geometry(): size mismatch for {target}")
logger.error(
f"... existing: {existing_length} incoming {incoming_length}"
)
return
logger.debug(
f"resizing geometry: add({incoming_length}) for {target}")
target.add(incoming_length)
return
if isinstance(target_rna, type(T.GPencilStrokePoints.bl_rna)):
existing_length = len(target)
incoming_length = proxy.length
delta = incoming_length - existing_length
if delta > 0:
target.add(delta)
else:
while delta < 0:
target.pop()
delta += 1
return
incoming_keys = set(proxy._data.keys())
existing_keys = set(target.keys())
truncate_keys = existing_keys - incoming_keys
if not truncate_keys:
return
if isinstance(target_rna, type(T.KeyingSets.bl_rna)):
for k in truncate_keys:
target.active_index = target.find(k)
bpy.ops.anim.keying_set_remove()
else:
try:
for k in truncate_keys:
target.remove(target[k])
except Exception:
logger.warning(
f"Not implemented truncate_collection for type {target.bl_rna} for {target} ..."
)
for s in traceback.format_exc().splitlines():
logger.warning(f"...{s}")
def remove_datablock(collection: T.bpy_prop_collection, datablock: T.ID):
"""Delete a datablock from its bpy.data collection"""
if isinstance(datablock, T.Scene):
from mixer.blender_client.scene import delete_scene
delete_scene(datablock)
elif isinstance(datablock, T.Key):
# the doc labels it unsafe, use sparingly
bpy.data.batch_remove([datablock])
elif isinstance(datablock, T.Library):
# TODO 2.91 has BlendDatalibraries.remove()
logger.warning(f"remove_datablock({datablock}): ignored (library)")
else:
collection.remove(datablock)