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279 | class ExtractLayout(
plugin.BlenderExtractor, publish.OptionalPyblishPluginMixin
):
"""Extract a layout."""
label = "Extract Layout (JSON)"
hosts = ["blender"]
families = ["layout"]
optional = True
def _export_animation(self, asset, instance, stagingdir, fbx_count):
n = fbx_count
for obj in asset.children:
if obj.type != "ARMATURE":
continue
object_action_pairs = []
original_actions = []
starting_frames = []
ending_frames = []
# For each armature, we make a copy of the current action
curr_action = None
copy_action = None
if obj.animation_data and obj.animation_data.action:
curr_action = obj.animation_data.action
copy_action = curr_action.copy()
curr_frame_range = curr_action.frame_range
starting_frames.append(curr_frame_range[0])
ending_frames.append(curr_frame_range[1])
else:
self.log.info("Object has no animation.")
continue
asset_group_name = asset.name
asset.name = asset.get(AVALON_PROPERTY).get("asset_name")
armature_name = obj.name
original_name = armature_name.split(':')[1]
obj.name = original_name
object_action_pairs.append((obj, copy_action))
original_actions.append(curr_action)
# We compute the starting and ending frames
max_frame = min(starting_frames)
min_frame = max(ending_frames)
# We bake the copy of the current action for each object
bpy_extras.anim_utils.bake_action_objects(
object_action_pairs,
frames=range(int(min_frame), int(max_frame)),
do_object=False,
do_clean=False
)
for o in bpy.data.objects:
o.select_set(False)
asset.select_set(True)
obj.select_set(True)
fbx_filename = f"{n:03d}.fbx"
filepath = os.path.join(stagingdir, fbx_filename)
override = plugin.create_blender_context(
active=asset, selected=[asset, obj])
with bpy.context.temp_override(**override):
# We export the fbx
bpy.ops.export_scene.fbx(
filepath=filepath,
use_active_collection=False,
use_selection=True,
bake_anim_use_nla_strips=False,
bake_anim_use_all_actions=False,
add_leaf_bones=False,
armature_nodetype='ROOT',
object_types={'EMPTY', 'ARMATURE'}
)
obj.name = armature_name
asset.name = asset_group_name
asset.select_set(False)
obj.select_set(False)
# We delete the baked action and set the original one back
for i in range(0, len(object_action_pairs)):
pair = object_action_pairs[i]
action = original_actions[i]
if action:
pair[0].animation_data.action = action
if pair[1]:
pair[1].user_clear()
bpy.data.actions.remove(pair[1])
return fbx_filename, n + 1
return None, n
def process(self, instance):
if not self.is_active(instance.data):
return
# Define extract output file path
stagingdir = self.staging_dir(instance)
# Perform extraction
self.log.debug("Performing extraction..")
if "representations" not in instance.data:
instance.data["representations"] = []
json_data = []
fbx_files = []
asset_group = instance.data["transientData"]["instance_node"]
fbx_count = 0
project_name = instance.context.data["projectName"]
version_ids = set()
filtered_assets = []
for asset in asset_group.children:
metadata = asset.get(AVALON_PROPERTY)
if not metadata:
# Avoid raising error directly if there's just invalid data
# inside the instance; better to log it to the artist
# TODO: This should actually be validated in a validator
self.log.warning(
f"Found content in layout that is not a loaded "
f"asset, skipping: {asset.name_full}"
)
continue
filtered_assets.append((asset, metadata))
version_ids.add(metadata["parent"])
repre_entities = get_representations(
project_name,
representation_names={"blend", "fbx", "abc"},
version_ids=version_ids,
fields={"id", "versionId", "name"}
)
repre_mapping_by_version_id = {
version_id: {}
for version_id in version_ids
}
for repre_entity in repre_entities:
version_id = repre_entity["versionId"]
repre_mapping_by_version_id[version_id][repre_entity["name"]] = (
repre_entity
)
for asset, metadata in filtered_assets:
version_id = metadata["parent"]
product_type = metadata.get("product_type")
if product_type is None:
product_type = metadata["family"]
repres_by_name = repre_mapping_by_version_id[version_id]
self.log.debug("Parent: {}".format(version_id))
# Get blend, fbx and abc reference
blend_id = repres_by_name.get("blend", {}).get("id")
fbx_id = repres_by_name.get("fbx", {}).get("id")
abc_id = repres_by_name.get("abc", {}).get("id")
json_element = {
key: value
for key, value in (
("reference", blend_id),
("reference_fbx", fbx_id),
("reference_abc", abc_id),
)
if value
}
json_element["product_type"] = product_type
json_element["instance_name"] = asset.name
json_element["asset_name"] = metadata["asset_name"]
json_element["file_path"] = metadata["libpath"]
json_element["transform"] = {
"translation": {
"x": asset.location.x,
"y": asset.location.y,
"z": asset.location.z
},
"rotation": {
"x": asset.rotation_euler.x,
"y": asset.rotation_euler.y,
"z": asset.rotation_euler.z
},
"scale": {
"x": asset.scale.x,
"y": asset.scale.y,
"z": asset.scale.z
}
}
json_element["transform_matrix"] = []
for row in list(asset.matrix_world.transposed()):
json_element["transform_matrix"].append(list(row))
json_element["basis"] = [
[1, 0, 0, 0],
[0, -1, 0, 0],
[0, 0, 1, 0],
[0, 0, 0, 1]
]
# Extract the animation as well
if product_type == "rig":
f, n = self._export_animation(
asset, instance, stagingdir, fbx_count)
if f:
fbx_files.append(f)
json_element["animation"] = f
fbx_count = n
json_data.append(json_element)
folder_name = instance.data["folderEntity"]["name"]
product_name = instance.data["productName"]
instance_name = f"{folder_name}_{product_name}"
json_filename = f"{instance_name}.json"
json_path = os.path.join(stagingdir, json_filename)
with open(json_path, "w+") as file:
json.dump(json_data, fp=file, indent=2)
json_representation = {
'name': 'json',
'ext': 'json',
'files': json_filename,
"stagingDir": stagingdir,
}
instance.data["representations"].append(json_representation)
self.log.debug(fbx_files)
if len(fbx_files) == 1:
fbx_representation = {
'name': 'fbx',
'ext': '000.fbx',
'files': fbx_files[0],
"stagingDir": stagingdir,
}
instance.data["representations"].append(fbx_representation)
elif len(fbx_files) > 1:
fbx_representation = {
'name': 'fbx',
'ext': 'fbx',
'files': fbx_files,
"stagingDir": stagingdir,
}
instance.data["representations"].append(fbx_representation)
self.log.debug("Extracted instance '%s' to: %s",
instance.name, json_representation)
|