ayon-core/pype/plugins/maya/publish/extract_look.py
2019-01-28 20:31:55 +01:00

135 lines
4.7 KiB
Python

import os
import json
import tempfile
import contextlib
from collections import OrderedDict
from maya import cmds
import pyblish.api
import avalon.maya
import colorbleed.api
import colorbleed.maya.lib as lib
@contextlib.contextmanager
def no_workspace_dir():
"""Force maya to a fake temporary workspace directory.
Note: This is not maya.cmds.workspace 'rootDirectory' but the 'directory'
This helps to avoid Maya automatically remapping image paths to files
relative to the currently set directory.
"""
# Store current workspace
original = cmds.workspace(query=True, directory=True)
# Set a fake workspace
fake_workspace_dir = tempfile.mkdtemp()
cmds.workspace(directory=fake_workspace_dir)
try:
yield
finally:
try:
cmds.workspace(directory=original)
except RuntimeError:
# If the original workspace directory didn't exist either
# ignore the fact that it fails to reset it to the old path
pass
# Remove the temporary directory
os.rmdir(fake_workspace_dir)
class ExtractLook(colorbleed.api.Extractor):
"""Extract Look (Maya Ascii + JSON)
Only extracts the sets (shadingEngines and alike) alongside a .json file
that stores it relationships for the sets and "attribute" data for the
instance members.
"""
label = "Extract Look (Maya ASCII + JSON)"
hosts = ["maya"]
families = ["colorbleed.look"]
order = pyblish.api.ExtractorOrder + 0.2
def process(self, instance):
# Define extract output file path
dir_path = self.staging_dir(instance)
maya_fname = "{0}.ma".format(instance.name)
json_fname = "{0}.json".format(instance.name)
# Make texture dump folder
maya_path = os.path.join(dir_path, maya_fname)
json_path = os.path.join(dir_path, json_fname)
self.log.info("Performing extraction..")
# Remove all members of the sets so they are not included in the
# exported file by accident
self.log.info("Extract sets (Maya ASCII) ...")
lookdata = instance.data["lookData"]
relationships = lookdata["relationships"]
sets = relationships.keys()
resources = instance.data["resources"]
remap = OrderedDict() # needs to be ordered, see color space values
for resource in resources:
attr = resource['attribute']
remap[attr] = resource['destination']
# Preserve color space values (force value after filepath change)
# This will also trigger in the same order at end of context to
# ensure after context it's still the original value.
color_space_attr = resource['node'] + ".colorSpace"
remap[color_space_attr] = cmds.getAttr(color_space_attr)
self.log.info("Finished remapping destinations ...")
# Extract in correct render layer
layer = instance.data.get("renderlayer", "defaultRenderLayer")
with lib.renderlayer(layer):
# TODO: Ensure membership edits don't become renderlayer overrides
with lib.empty_sets(sets, force=True):
# To avoid Maya trying to automatically remap the file
# textures relative to the `workspace -directory` we force
# it to a fake temporary workspace. This fixes textures
# getting incorrectly remapped. (LKD-17, PLN-101)
with no_workspace_dir():
with lib.attribute_values(remap):
with avalon.maya.maintained_selection():
cmds.select(sets, noExpand=True)
cmds.file(maya_path,
force=True,
typ="mayaAscii",
exportSelected=True,
preserveReferences=False,
channels=True,
constraints=True,
expressions=True,
constructionHistory=True)
# Write the JSON data
self.log.info("Extract json..")
data = {"attributes": lookdata["attributes"],
"relationships": relationships}
with open(json_path, "w") as f:
json.dump(data, f)
if "files" not in instance.data:
instance.data["files"] = list()
instance.data["files"].append(maya_fname)
instance.data["files"].append(json_fname)
self.log.info("Extracted instance '%s' to: %s" % (instance.name,
maya_path))