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85 lines
2.8 KiB
Python
85 lines
2.8 KiB
Python
import os
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from maya import cmds
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import avalon.maya
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import pype.api
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from pype.maya.lib import extract_alembic
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class ExtractAnimation(pype.api.Extractor):
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"""Produce an alembic of just point positions and normals.
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Positions and normals, uvs, creases are preserved, but nothing more,
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for plain and predictable point caches.
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"""
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label = "Extract Animation"
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hosts = ["maya"]
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families = ["animation"]
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def process(self, instance):
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# Collect the out set nodes
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out_sets = [node for node in instance if node.endswith("out_SET")]
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if len(out_sets) != 1:
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raise RuntimeError("Couldn't find exactly one out_SET: "
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"{0}".format(out_sets))
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out_set = out_sets[0]
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roots = cmds.sets(out_set, query=True)
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# Include all descendants
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nodes = roots + cmds.listRelatives(roots,
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allDescendents=True,
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fullPath=True) or []
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# Collect the start and end including handles
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start = instance.data["startFrame"]
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end = instance.data["endFrame"]
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handles = instance.data.get("handles", 0)
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if handles:
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start -= handles
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end += handles
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self.log.info("Extracting animation..")
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dirname = self.staging_dir(instance)
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parent_dir = self.staging_dir(instance)
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filename = "{name}.abc".format(**instance.data)
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path = os.path.join(parent_dir, filename)
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options = {
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"step": instance.data.get("step", 1.0),
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"attr": ["cbId"],
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"writeVisibility": True,
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"writeCreases": True,
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"uvWrite": True,
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"selection": True,
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"worldSpace": instance.data.get("worldSpace", True)
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}
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if not instance.data.get("includeParentHierarchy", True):
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# Set the root nodes if we don't want to include parents
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# The roots are to be considered the ones that are the actual
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# direct members of the set
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options["root"] = roots
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if int(cmds.about(version=True)) >= 2017:
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# Since Maya 2017 alembic supports multiple uv sets - write them.
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options["writeUVSets"] = True
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with avalon.maya.suspended_refresh():
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with avalon.maya.maintained_selection():
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cmds.select(nodes, noExpand=True)
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extract_alembic(file=path,
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startFrame=start,
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endFrame=end,
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**options)
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if "files" not in instance.data:
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instance.data["files"] = list()
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instance.data["files"].append(filename)
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self.log.info("Extracted {} to {}".format(instance, dirname))
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