1 files changed, 84 insertions, 0 deletions
diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_animation_channel_target.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_animation_channel_target.py
new file mode 100755
index 00000000..2e4ac1d7
--- /dev/null
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_animation_channel_target.py
@@ -0,0 +1,84 @@
+# Copyright 2018 The glTF-Blender-IO authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+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
+
+
+@cached
+def gather_animation_channel_target(channels: typing.Tuple[bpy.types.FCurve],
+                                    blender_object: bpy.types.Object,
+                                    export_settings
+                                    ) -> gltf2_io.AnimationChannelTarget:
+    return gltf2_io.AnimationChannelTarget(
+        extensions=__gather_extensions(channels, blender_object, export_settings),
+        extras=__gather_extras(channels, blender_object, export_settings),
+        node=__gather_node(channels, blender_object, export_settings),
+        path=__gather_path(channels, blender_object, export_settings)
+    )
+
+
+def __gather_extensions(channels: typing.Tuple[bpy.types.FCurve],
+                        blender_object: bpy.types.Object,
+                        export_settings
+                        ) -> typing.Any:
+    return None
+
+
+def __gather_extras(channels: typing.Tuple[bpy.types.FCurve],
+                    blender_object: bpy.types.Object,
+                    export_settings
+                    ) -> typing.Any:
+    return None
+
+
+def __gather_node(channels: typing.Tuple[bpy.types.FCurve],
+                  blender_object: bpy.types.Object,
+                  export_settings
+                  ) -> gltf2_io.Node:
+    if blender_object.type == "ARMATURE":
+        # TODO: get joint from fcurve data_path and gather_joint
+        blender_bone = blender_object.path_resolve(channels[0].data_path.rsplit('.', 1)[0])
+        if isinstance(blender_bone, bpy.types.PoseBone):
+            return gltf2_blender_gather_joints.gather_joint(blender_bone, export_settings)
+
+    return gltf2_blender_gather_nodes.gather_node(blender_object, export_settings)
+
+
+def __gather_path(channels: typing.Tuple[bpy.types.FCurve],
+                  blender_object: bpy.types.Object,
+                  export_settings
+                  ) -> str:
+    target = channels[0].data_path.split('.')[-1]
+    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:
+        raise RuntimeError("Cannot export an animation with {} target".format(target))
+
+    return path
+