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# SPDX-License-Identifier: Apache-2.0
# Copyright 2018-2021 The glTF-Blender-IO authors.
import bpy
import typing
from io_scene_gltf2.io.com import gltf2_io
from io_scene_gltf2.blender.exp.gltf2_blender_gather_cache import cached
from io_scene_gltf2.blender.exp import gltf2_blender_gather_nodes
from io_scene_gltf2.blender.exp import gltf2_blender_gather_joints
from io_scene_gltf2.blender.exp import gltf2_blender_gather_skins
from io_scene_gltf2.io.exp.gltf2_io_user_extensions import export_user_extensions
@cached
def gather_animation_channel_target(channels: typing.Tuple[bpy.types.FCurve],
blender_object: bpy.types.Object,
bake_bone: typing.Union[str, None],
bake_channel: typing.Union[str, None],
driver_obj,
export_settings
) -> gltf2_io.AnimationChannelTarget:
animation_channel_target = gltf2_io.AnimationChannelTarget(
extensions=__gather_extensions(channels, blender_object, export_settings, bake_bone),
extras=__gather_extras(channels, blender_object, export_settings, bake_bone),
node=__gather_node(channels, blender_object, export_settings, bake_bone, driver_obj),
path=__gather_path(channels, blender_object, export_settings, bake_bone, bake_channel)
)
export_user_extensions('gather_animation_channel_target_hook',
export_settings,
animation_channel_target,
channels,
blender_object,
bake_bone,
bake_channel)
return animation_channel_target
def __gather_extensions(channels: typing.Tuple[bpy.types.FCurve],
blender_object: bpy.types.Object,
export_settings,
bake_bone: typing.Union[str, None]
) -> typing.Any:
return None
def __gather_extras(channels: typing.Tuple[bpy.types.FCurve],
blender_object: bpy.types.Object,
export_settings,
bake_bone: typing.Union[str, None]
) -> typing.Any:
return None
def __gather_node(channels: typing.Tuple[bpy.types.FCurve],
blender_object: bpy.types.Object,
export_settings,
bake_bone: typing.Union[str, None],
driver_obj
) -> gltf2_io.Node:
if driver_obj is not None:
return gltf2_blender_gather_nodes.gather_node(driver_obj,
driver_obj.library.name if driver_obj.library else None,
None, None, export_settings)
if blender_object.type == "ARMATURE":
# TODO: get joint from fcurve data_path and gather_joint
if bake_bone is not None:
blender_bone = blender_object.pose.bones[bake_bone]
else:
blender_bone = blender_object.path_resolve(channels[0].data_path.rsplit('.', 1)[0])
if isinstance(blender_bone, bpy.types.PoseBone):
if export_settings["gltf_def_bones"] is False:
return gltf2_blender_gather_joints.gather_joint(blender_object, blender_bone, export_settings)
else:
bones, _, _ = gltf2_blender_gather_skins.get_bone_tree(None, blender_object)
if blender_bone.name in [b.name for b in bones]:
return gltf2_blender_gather_joints.gather_joint(blender_object, blender_bone, export_settings)
return gltf2_blender_gather_nodes.gather_node(blender_object,
blender_object.library.name if blender_object.library else None,
None, None, export_settings)
def __gather_path(channels: typing.Tuple[bpy.types.FCurve],
blender_object: bpy.types.Object,
export_settings,
bake_bone: typing.Union[str, None],
bake_channel: typing.Union[str, None]
) -> str:
if bake_channel is None:
# Note: channels has some None items only for SK if some SK are not animated
target = [c for c in channels if c is not None][0].data_path.split('.')[-1]
else:
target = bake_channel
path = {
"delta_location": "translation",
"delta_rotation_euler": "rotation",
"location": "translation",
"rotation_axis_angle": "rotation",
"rotation_euler": "rotation",
"rotation_quaternion": "rotation",
"scale": "scale",
"value": "weights"
}.get(target)
if target is None:
return None
return path
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