diff --git a/vcg/complex/local_optimization/quad_diag_collapse.h b/vcg/complex/trimesh/local_optimization/quad_diag_collapse.h
similarity index 100%
rename from vcg/complex/local_optimization/quad_diag_collapse.h
rename to vcg/complex/trimesh/local_optimization/quad_diag_collapse.h
diff --git a/vcg/complex/local_optimization/tetra_edge_collapse.h b/vcg/complex/trimesh/local_optimization/tetra_edge_collapse.h
similarity index 100%
rename from vcg/complex/local_optimization/tetra_edge_collapse.h
rename to vcg/complex/trimesh/local_optimization/tetra_edge_collapse.h
diff --git a/vcg/complex/local_optimization/tri_edge_collapse.h b/vcg/complex/trimesh/local_optimization/tri_edge_collapse.h
similarity index 100%
rename from vcg/complex/local_optimization/tri_edge_collapse.h
rename to vcg/complex/trimesh/local_optimization/tri_edge_collapse.h
diff --git a/vcg/complex/local_optimization/tri_edge_collapse_quadric.h b/vcg/complex/trimesh/local_optimization/tri_edge_collapse_quadric.h
similarity index 100%
rename from vcg/complex/local_optimization/tri_edge_collapse_quadric.h
rename to vcg/complex/trimesh/local_optimization/tri_edge_collapse_quadric.h
diff --git a/vcg/complex/local_optimization/tri_edge_flip.h b/vcg/complex/trimesh/local_optimization/tri_edge_flip.h
similarity index 100%
rename from vcg/complex/local_optimization/tri_edge_flip.h
rename to vcg/complex/trimesh/local_optimization/tri_edge_flip.h