How to save a 3D Mesh OBJ model into weaviate #1845

@spi('three2vec')
class Three2VecTransformer(Transformer):

    def __init__(self):
        db = WeaviateDocumentIndex.DBConfig()
        db.host = 'http://localhost:6543/weaviate'
        # db.index_name = 'three2vec'
        self.db = WeaviateDocumentIndex[Mesh3D](db_config=db)

    def transform(self, kind: str, buff: bytes) -> bytes:
        src = tempfile.mkstemp(f".{kind}", tool.new_trace_id())[1]
        dst = tempfile.mkstemp('.obj', tool.new_trace_id())[1]
        try:
            with (open(file=src, mode='wb+') as fs):
                fs.write(buff)
                # model = o3d.io.read_triangle_mesh(src)
                # # model.compute_vertex_normals()
                # voxel_grid = o3d.geometry.VoxelGrid().create_from_triangle_mesh(input=model, voxel_size=5)
                # o3d.io.write_voxel_grid(dst, voxel_grid)
                # o3d.visualization.draw_geometries([voxel_grid])

                # model = model.subdivide_loop(number_of_iterations=1)
                # o3d.visualization.draw_geometries([model], mesh_show_wireframe=True)

                # model.compute_vertex_normals()
                # point_cloud = model.sample_points_uniformly(number_of_points=20000)
                # o3d.visualization.draw_geometries([point_cloud])
                #
                mesh = Mesh3D(url=src)
                mesh.tensors = mesh.url.load()
                mesh.embedding = mesh.tensors.vertices
                mesh.url.display()
                self.db.index(mesh)

                r, s = self.db.find(mesh, limit=10)

                codec = ServiceLoader.load(Codec).get_default()
                return codec.encode({})

            # with open(file=dst, mode='rb+') as fs:
            #     return fs.read()
        finally:
            os.remove(src)
            os.remove(dst)