Method get_unselected_faces

tools/MeshUtils/SubMesh.h:59–61

            check_validity(); return m_unselected_vertices;
        }
        MatrixIr get_unselected_faces() const {
            check_validity(); return m_unselected_faces;
        }

        VectorI get_unselected_vertex_indices() const {
            check_validity(); return m_unselected_vertex_indices;