using segments_type = vtb::geometry::Curve_segments< T, 3 >
using coons_surface_type = vtb::geometry::Coons_surface< T, curve_type >
using curve_type = vtb::geometry::Cubic_spline< T >
using basis_spline = vtb::geometry::Basis_spline< T, 3 >
using spline_surface_type = vtb::geometry::Spline_surface< T, curve_type >
using cubic_spline = vtb::geometry::Cubic_spline< T >
using polyhedron_type = vtb::geometry::Polyhedron< T >