63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
# SPDX-FileCopyrightText: 2021-2023 Blender Foundation
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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"""
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Pose Library - Conversion of old pose libraries.
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"""
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from typing import Optional
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from collections.abc import Collection
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if "pose_creation" not in locals():
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from . import pose_creation
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else:
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import importlib
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pose_creation = importlib.reload(pose_creation)
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import bpy
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from bpy.types import (
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Action,
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TimelineMarker,
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)
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def convert_old_poselib(old_poselib: Action) -> Collection[Action]:
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"""Convert an old-style pose library to a set of pose Actions.
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Old pose libraries were one Action with multiple pose markers. Each pose
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marker will be converted to an Action by itself and marked as asset.
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"""
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pose_assets = [action for marker in old_poselib.pose_markers if (action := convert_old_pose(old_poselib, marker))]
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# Mark all Actions as assets in one go. Ideally this would be done on an
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# appropriate frame in the scene (to set up things like the background
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# colour), but the old-style poselib doesn't contain such information. All
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# we can do is just render on the current frame.
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context_override = {'selected_ids': pose_assets}
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with bpy.context.temp_override(**context_override):
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bpy.ops.asset.mark()
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return pose_assets
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def convert_old_pose(old_poselib: Action, marker: TimelineMarker) -> Optional[Action]:
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"""Convert an old-style pose library pose to a pose action."""
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frame: int = marker.frame
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action: Optional[Action] = None
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for fcurve in old_poselib.fcurves:
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key = pose_creation.find_keyframe(fcurve, frame)
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if not key:
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continue
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if action is None:
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action = bpy.data.actions.new(marker.name)
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pose_creation.create_single_key_fcurve(action, fcurve, key)
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return action
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