def _expand_group(block: blendfile.BlendFileBlock):
log.debug('Collection/group Block: %s (name=%s)', block, block.id_name)
objects = block.get_pointer((b'gobject', b'first'))
for item in iterators.listbase(objects):
yield item.get_pointer(b'ob')
# Recurse through child collections.
try:
children = block.get_pointer((b'children', b'first'))
except KeyError:
# 'children' was introduced in Blender 2.8 collections
pass
else:
for child in iterators.listbase(children):
subcoll = child.get_pointer(b'collection')
if subcoll is None:
continue
if subcoll.dna_type_id == b'ID':
# This issue happened while recursing a linked-in 'Hidden'
# collection in the Chimes set of the Spring project. Such
# collections named 'Hidden' were apparently created while
# converting files from Blender 2.79 to 2.80. This error
# isn't reproducible with just Blender 2.80.
yield subcoll
continue
log.debug('recursing into child collection %s (name=%r, type=%r)',
subcoll, subcoll.id_name, subcoll.dna_type_name)
yield from _expand_group(subcoll)
def _expand_particle_settings(block: blendfile.BlendFileBlock):
yield from _expand_generic_animdata(block)
yield from _expand_generic_mtex(block)
block_ren_as = block[b'ren_as']
if block_ren_as == cdefs.PART_DRAW_GR:
yield block.get_pointer(b'dup_group')
elif block_ren_as == cdefs.PART_DRAW_OB:
yield block.get_pointer(b'dup_ob')
def mesh(
block: blendfile.BlendFileBlock) -> typing.Iterator[result.BlockUsage]:
"""Mesh data blocks."""
block_external = block.get_pointer((b'ldata', b'external'), None)
if block_external is None:
block_external = block.get_pointer((b'fdata', b'external'), None)
if block_external is None:
return
path, field = block_external.get(b'filename', return_field=True)
yield result.BlockUsage(block, path, path_full_field=field)
def scene(
block: blendfile.BlendFileBlock) -> typing.Iterator[result.BlockUsage]:
"""Scene data blocks."""
# Sequence editor is the only interesting bit.
block_ed = block.get_pointer(b'ed')
if block_ed is None:
return
single_asset_types = {
cdefs.SEQ_TYPE_MOVIE, cdefs.SEQ_TYPE_SOUND_RAM, cdefs.SEQ_TYPE_SOUND_HD
}
asset_types = single_asset_types.union({cdefs.SEQ_TYPE_IMAGE})
for seq, seq_type in iterators.sequencer_strips(block_ed):
if seq_type not in asset_types:
continue
seq_strip = seq.get_pointer(b'strip')
if seq_strip is None:
continue
seq_stripdata = seq_strip.get_pointer(b'stripdata')
if seq_stripdata is None:
continue
dirname, dn_field = seq_strip.get(b'dir', return_field=True)
basename, bn_field = seq_stripdata.get(b'name', return_field=True)
asset_path = bpathlib.BlendPath(dirname) / basename
is_sequence = seq_type not in single_asset_types
yield result.BlockUsage(seq_strip,
asset_path,
is_sequence=is_sequence,
path_dir_field=dn_field,
path_base_field=bn_field)
def _expand_curve(block: blendfile.BlendFileBlock):
yield from _expand_generic_animdata(block)
yield from _expand_generic_material(block)
for fieldname in (b'vfont', b'vfontb', b'vfonti', b'vfontbi', b'bevobj',
b'taperobj', b'textoncurve'):
yield block.get_pointer(fieldname)
def modifier_cloth(ctx: ModifierContext, modifier: blendfile.BlendFileBlock, block_name: bytes) \
-> typing.Iterator[result.BlockUsage]:
pointcache = modifier.get_pointer(b'point_cache')
if pointcache is None:
return
yield from _walk_point_cache(ctx, block_name, modifier.bfile, pointcache,
cdefs.PTCACHE_EXT)
def _expand_material(block: blendfile.BlendFileBlock):
yield from _expand_generic_animdata(block)
yield from _expand_generic_nodetree_id(block)
yield from _expand_generic_mtex(block)
try:
yield block.get_pointer(b'group')
except KeyError:
# Groups were removed from Blender 2.8
pass
def _get_texture(prop_name: bytes, dblock: blendfile.BlendFileBlock, block_name: bytes) \
-> typing.Iterator[result.BlockUsage]:
"""Yield block usages from a texture propery.
Assumes dblock[prop_name] is a texture data block.
"""
if dblock is None:
return
tx = dblock.get_pointer(prop_name)
yield from _get_image(b'ima', tx, block_name)
def _expand_generic_nodetree(block: blendfile.BlendFileBlock):
assert block.dna_type.dna_type_id == b'bNodeTree'
nodes = block.get_pointer((b'nodes', b'first'))
for node in iterators.listbase(nodes):
if node[b'type'] == cdefs.CMP_NODE_R_LAYERS:
continue
yield node
# The 'id' property points to whatever is used by the node
# (like the image in an image texture node).
yield node.get_pointer(b'id')
def _expand_scene(block: blendfile.BlendFileBlock):
yield from _expand_generic_animdata(block)
yield from _expand_generic_nodetree_id(block)
yield block.get_pointer(b'camera')
yield block.get_pointer(b'world')
yield block.get_pointer(b'set', default=None)
yield block.get_pointer(b'clip', default=None)
# sdna_index_Base = block.file.sdna_index_from_id[b'Base']
# for item in bf_utils.iter_ListBase(block.get_pointer((b'base', b'first'))):
# yield item.get_pointer(b'object', sdna_index_refine=sdna_index_Base)
bases = block.get_pointer((b'base', b'first'))
for base in iterators.listbase(bases):
yield base.get_pointer(b'object')
# Sequence Editor
block_ed = block.get_pointer(b'ed')
if not block_ed:
return
strip_type_to_field = {
cdefs.SEQ_TYPE_SCENE: b'scene',
cdefs.SEQ_TYPE_MOVIECLIP: b'clip',
cdefs.SEQ_TYPE_MASK: b'mask',
cdefs.SEQ_TYPE_SOUND_RAM: b'sound',
}
for strip, strip_type in iterators.sequencer_strips(block_ed):
try:
field_name = strip_type_to_field[strip_type]
except KeyError:
continue
yield strip.get_pointer(field_name)
def _expand_object(block: blendfile.BlendFileBlock):
yield from _expand_generic_animdata(block)
yield from _expand_generic_material(block)
yield block.get_pointer(b'data')
if block[b'transflag'] & cdefs.OB_DUPLIGROUP:
yield block.get_pointer(b'dup_group')
yield block.get_pointer(b'proxy')
yield block.get_pointer(b'proxy_group')
# 'ob->pose->chanbase[...].custom'
block_pose = block.get_pointer(b'pose')
if block_pose:
assert block_pose.dna_type.dna_type_id == b'bPose'
# sdna_index_bPoseChannel = block_pose.file.sdna_index_from_id[b'bPoseChannel']
channels = block_pose.get_pointer((b'chanbase', b'first'))
for pose_chan in iterators.listbase(channels):
yield pose_chan.get_pointer(b'custom')
# Expand the objects 'ParticleSettings' via 'ob->particlesystem[...].part'
# sdna_index_ParticleSystem = block.file.sdna_index_from_id.get(b'ParticleSystem')
# if sdna_index_ParticleSystem is not None:
psystems = block.get_pointer((b'particlesystem', b'first'))
for psystem in iterators.listbase(psystems):
yield psystem.get_pointer(b'part')
def modifier_mesh_sequence_cache(
ctx: ModifierContext, modifier: blendfile.BlendFileBlock,
block_name: bytes) -> typing.Iterator[result.BlockUsage]:
"""Yield the Alembic file(s) used by this modifier"""
cache_file = modifier.get_pointer(b'cache_file')
if cache_file is None:
return
is_sequence = bool(cache_file[b'is_sequence'])
cache_block_name = cache_file.id_name
assert cache_block_name is not None
path, field = cache_file.get(b'filepath', return_field=True)
yield result.BlockUsage(cache_file,
path,
path_full_field=field,
is_sequence=is_sequence,
block_name=cache_block_name)
def object_block(
block: blendfile.BlendFileBlock) -> typing.Iterator[result.BlockUsage]:
"""Object data blocks."""
ctx = modifier_walkers.ModifierContext(owner=block)
# 'ob->modifiers[...].filepath'
mods = block.get_pointer((b'modifiers', b'first'))
for mod_idx, block_mod in enumerate(
iterators.listbase(mods, next_path=(b'modifier', b'next'))):
block_name = b'%s.modifiers[%d]' % (block.id_name, mod_idx)
mod_type = block_mod[b'modifier', b'type']
log.debug('Tracing modifier %s, type=%d', block_name.decode(),
mod_type)
try:
mod_handler = modifier_walkers.modifier_handlers[mod_type]
except KeyError:
continue
yield from mod_handler(ctx, block_mod, block_name)
def modifier_smoke_sim(ctx: ModifierContext, modifier: blendfile.BlendFileBlock, block_name: bytes) \
-> typing.Iterator[result.BlockUsage]:
my_log = log.getChild('modifier_smoke_sim')
domain = modifier.get_pointer(b'domain')
if domain is None:
my_log.debug('Modifier %r (%r) has no domain',
modifier[b'modifier', b'name'], block_name)
return
pointcache = domain.get_pointer(b'point_cache')
if pointcache is None:
return
format = domain.get(b'cache_file_format')
extensions = {
cdefs.PTCACHE_FILE_PTCACHE: cdefs.PTCACHE_EXT,
cdefs.PTCACHE_FILE_OPENVDB: cdefs.PTCACHE_EXT_VDB
}
yield from _walk_point_cache(ctx, block_name, modifier.bfile, pointcache,
extensions[format])
def modifier_fluid_sim(ctx: ModifierContext, modifier: blendfile.BlendFileBlock, block_name: bytes) \
-> typing.Iterator[result.BlockUsage]:
my_log = log.getChild('modifier_fluid_sim')
fss = modifier.get_pointer(b'fss')
if fss is None:
my_log.debug('Modifier %r (%r) has no fss',
modifier[b'modifier', b'name'], block_name)
return
path, field = fss.get(b'surfdataPath', return_field=True)
# This may match more than is used by Blender, but at least it shouldn't
# miss any files.
# The 'fluidsurface' prefix is defined in source/blender/makesdna/DNA_object_fluidsim_types.h
bpath = bpathlib.BlendPath(path)
yield result.BlockUsage(fss,
bpath,
path_full_field=field,
is_sequence=True,
block_name=block_name)
def _expand_generic_animdata(block: blendfile.BlendFileBlock):
block_adt = block.get_pointer(b'adt')
if block_adt:
yield block_adt.get_pointer(b'action')
def _expand_mesh(block: blendfile.BlendFileBlock):
yield from _expand_generic_animdata(block)
yield from _expand_generic_material(block)
yield block.get_pointer(b'texcomesh')
def _expand_texture(block: blendfile.BlendFileBlock):
yield from _expand_generic_animdata(block)
yield from _expand_generic_nodetree_id(block)
yield block.get_pointer(b'ima')
def _expand_generic_nodetree_id(block: blendfile.BlendFileBlock):
block_ntree = block.get_pointer(b'nodetree', None)
if block_ntree is not None:
yield from _expand_generic_nodetree(block_ntree)