clear_object_model_3dcopy_object_model_3ddeserialize_object_model_3dgen_box_object_model_3dgen_cylinder_object_model_3dgen_empty_object_model_3dgen_object_model_3d_from_pointsgen_plane_object_model_3dgen_sphere_object_model_3dgen_sphere_object_model_3d_centerread_object_model_3dremove_object_model_3d_attribremove_object_model_3d_attrib_modserialize_object_model_3dset_object_model_3d_attribset_object_model_3d_attrib_modunion_object_model_3dwrite_object_model_3d