diff --git a/network_process/include/connect_by_topo/topology_ray_shooting.hpp b/network_process/include/connect_by_topo/topology_ray_shooting.hpp
index 4445698..ddd0bae 100644
--- a/network_process/include/connect_by_topo/topology_ray_shooting.hpp
+++ b/network_process/include/connect_by_topo/topology_ray_shooting.hpp
@@ -9,8 +9,7 @@ struct component_header_t;
 struct face_with_orient_t;
 
 // topological ray shooting for implicit arrangement
-void topo_ray_shooting(const scene_bg_mesh_info_t                 &scene_bg_mesh_info,
-                       const std::vector<std::array<uint32_t, 4>> &tetrahedrons,
+void topo_ray_shooting(const std::vector<std::array<uint32_t, 4>> &tetrahedrons,
                        const flat_hash_map<uint32_t, uint32_t>    &vertex_lexigraphical_adjacency,
                        const std::vector<arrangement_t>           &tetrahedron_arrangements,
                        const std::vector<iso_vertex_t>            &iso_verts,
@@ -24,8 +23,7 @@ void topo_ray_shooting(const scene_bg_mesh_info_t                 &scene_bg_mesh
                        std::vector<std::pair<uint32_t, uint32_t>> &shell_links);
 
 // find extremal edge for each component
-void find_extremal_edges(const scene_bg_mesh_info_t                                    &scene_bg_mesh_info,
-                         const std::vector<iso_vertex_t>                               &iso_verts,
+void find_extremal_edges(const std::vector<iso_vertex_t>                               &iso_verts,
                          const std::vector<polygon_face_t>                             &iso_faces,
                          const std::vector<std::vector<uint32_t>>                      &patches,
                          const std::vector<std::vector<uint32_t>>                      &components,