export_fbx.py

        for data in data_seq:  # scene or group
            newname = prefix + bpy.path.clean_name(data.name)

            if use_batch_own_dir:
                new_fbxpath = fbxpath + newname + os.sep
                # path may already exist
                # TODO - might exist but be a file. unlikely but should probably account for it.

                if not os.path.exists(new_fbxpath):
                    os.makedirs(new_fbxpath)

            filepath = new_fbxpath + newname + '.fbx'

            print('\nBatch exporting %s as...\n\t%r' % (data, filepath))

            # XXX don't know what to do with this, probably do the same? (Arystan)
            if batch_mode == 'GROUP':  # group
                # group, so objects update properly, add a dummy scene.
                scene = bpy.data.scenes.new(name="FBX_Temp")
                scene.layers = [True] * 20
                # bpy.data.scenes.active = scene # XXX, cant switch
                for ob_base in data.objects:
                    scene.objects.link(ob_base)

                scene.update()
            else:
                scene = data

                # TODO - BUMMER! Armatures not in the group wont animate the mesh

            # else:  # scene
            #     data_seq.active = data

            # Call self with modified args
            # Dont pass batch options since we already usedt them
            kwargs_batch = kwargs.copy()

            kwargs_batch["context_objects"] = data.objects

            save_single(operator, scene, filepath, **kwargs_batch)

            if batch_mode == 'GROUP':
                # remove temp group scene
                bpy.data.scenes.remove(scene)

        # no active scene changing!
        # bpy.data.scenes.active = orig_sce

        return {'FINISHED'}  # so the script wont run after we have batch exported.

# APPLICATION REQUIREMENTS
# Please update the lists for UDK, Unity, XNA etc. on the following web page:
#   http://wiki.blender.org/index.php/Dev:2.5/Py/Scripts/Import-Export/UnifiedFBX

# XNA FBX Requirements (JCB 29 July 2011)
# - Armature must be parented to the scene
# - Armature must be a 'Limb' never a 'null'.  This is in several places.
# - First bone must be parented to the armature.
# - Rotation must be completely disabled including
#       always returning the original matrix in In object_tx().
#       It is the animation that gets distorted during rotation!
# - Lone edges cause intermittent errors in the XNA content pipeline!
#       I have added a warning message and excluded them.
# - Bind pose must be included with the 'MESH'
# Typical settings for XNA export
#   No Cameras, No Lamps, No Edges, No face smoothing, No Default_Take, Armature as bone, Disable rotation

# NOTE TO Campbell -
#   Can any or all of the following notes be removed because some have been here for a long time? (JCB 27 July 2011)
# NOTES (all line numbers correspond to original export_fbx.py (under release/scripts)
# - get rid of bpy.path.clean_name somehow
# + get rid of BPyObject_getObjectArmature, move it in RNA?
# - implement all BPyMesh_* used here with RNA
# - getDerivedObjects is not fully replicated with .dupli* funcs
# - don't know what those colbits are, do we need them? they're said to be deprecated in DNA_object_types.h: 1886-1893
# - no hq normals: 1900-1901