BSpline.h

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#pragma once

#include <limits>
#include <vector>

namespace geometry
{
    class BSpline
    {
    public:
        BSpline() {};
        BSpline(const std::vector<double> & parametersAtControlPoint, const std::vector<double> & valuesAtControlPoint);
        ~BSpline() {}

        double getValueFromParameter(const double & param) const;
        void setParameterAndValueAtControlPoint(const std::vector<double> & parametersAtControlPoint, const std::vector<double> & valuesAtControlPoint);

    private:

        void checkIfParametersIncreaseOrDecrease();
        std::size_t getSplineIndexFromParameter(const double & param) const;

        bool areParametersIncreasing;

        // basically each of set of 5 double describe a spline
        std::vector<double> a;
        std::vector<double> b;
        std::vector<double> c;
        std::vector<double> d;
        std::vector<double> parameter; //named x in the wiki link

    };
}