parametric_spline_surface.hh

#ifndef VTESTBED_IGES_PARAMETRIC_SPLINE_SURFACE_HH
#define VTESTBED_IGES_PARAMETRIC_SPLINE_SURFACE_HH

#include <blitz/array.h>

#include <vtestbed/iges/entity.hh>
#include <vtestbed/iges/types.hh>

namespace vtb {

    namespace iges {

        template <class T>
        class Parametric_spline_surface: public Entity {

        public:

            struct Coefficients {
                T x[16] {};
                T y[16] {};
                T z[16] {};
            };

            static_assert(sizeof(Coefficients) == 48*sizeof(T), "bad size");

            typedef std::vector<T> array_1d;
            typedef std::vector<std::vector<Coefficients>> coefficient_array;
            typedef blitz::TinyVector<T,3> vec3;
            typedef std::vector<vec3> vertex_array_1d;
            typedef std::vector<vertex_array_1d> vertex_array_2d;

        private:
            Integer _boundary_type = 1;
            Integer _patch_type = 0;
            Integer _nsegments_u = 0;
            Integer _nsegments_v = 0;
            array_1d _u;
            array_1d _v;
            coefficient_array _coefficients;

        public:

            explicit
            Parametric_spline_surface(const vertex_array_2d& data, bool cyclic=false);

        protected:

            void
            parameters(iges_ostream& out) const override;

        };

    }

}

#endif // vim:filetype=cpp