#pragma once

#include <vector>
#include "i_bspline.hpp"

namespace cvpr
{
    class BSpline : public IBSpline
    {
    public:
        BSpline();

        BSpline(const std::vector<std::vector<double>>& points, int degree);

        void create(const std::vector<std::vector<double>>& points, int degree) override;

        bool isValid() override;

        std::vector<double> eval(double t) override;

    private:
        void createImpl(const std::vector<std::vector<double>>& points, int degree);

    private:
        bool m_isValid;

        std::pair<int, int> m_domain;

        std::vector<double> m_knots;

        std::vector<double> m_weights;

        std::vector<std::vector<double>> m_v;

        int m_dim;

        int m_degree;
    };
}