Blender: Extract Alembic Animations

openpype/hosts/blender/plugins/publish/extract_abc_animation.py

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+import os
+
+import bpy
+
+from openpype.pipeline import publish
+from openpype.hosts.blender.api import plugin
+
+
+class ExtractAnimationABC(publish.Extractor):
+ """Extract as ABC."""
+
+ label = "Extract Animation ABC"
+ hosts = ["blender"]
+ families = ["animation"]
+ optional = True
+
+ def process(self, instance):
+ # Define extract output file path
+ stagingdir = self.staging_dir(instance)
+ filename = f"{instance.name}.abc"
+ filepath = os.path.join(stagingdir, filename)
+
+ context = bpy.context
+
+ # Perform extraction
+ self.log.info("Performing extraction..")
+
+ plugin.deselect_all()
+
+ selected = []
+ asset_group = None
+
+ objects = []
+ for obj in instance:
+ if isinstance(obj, bpy.types.Collection):
+ for child in obj.all_objects:
+ objects.append(child)
+ for obj in objects:
+ children = [o for o in bpy.data.objects if o.parent == obj]
+ for child in children:
+ objects.append(child)
+
+ for obj in objects:
+ obj.select_set(True)
+ selected.append(obj)
+
+ context = plugin.create_blender_context(
+ active=asset_group, selected=selected)
+
+ # We export the abc
+ bpy.ops.wm.alembic_export(
+ context,
+ filepath=filepath,
+ selected=True,
+ flatten=False
+ )
+
+ plugin.deselect_all()
+
+ if "representations" not in instance.data:
+ instance.data["representations"] = []
+
+ representation = {
+ 'name': 'abc',
+ 'ext': 'abc',
+ 'files': filename,
+ "stagingDir": stagingdir,
+ }
+ instance.data["representations"].append(representation)
+
+ self.log.info("Extracted instance '%s' to: %s",
+ instance.name, representation)