Method get_outer_hull_layers

tools/OuterHull/OuterHullEngine.h:30–30

        MatrixFr get_vertices() const { return m_vertices; }
        MatrixIr get_faces() const { return m_faces; }
        VectorI  get_outer_hull_layers() const { return m_layers; }
        VectorI  get_face_is_flipped() const { return m_face_is_flipped; }
        VectorI  get_ori_face_indices() const { return m_ori_face_indices; }