BezierSpline.hh

#ifndef GRAIL_BEZIER_SPLINE_H
#define GRAIL_BEZIER_SPLINE_H
 
#include "Curve.hh"
#include "../../libs/vector2/vector2.h"
 
namespace grail
{
    namespace curves
    {
        class BezierSpline final : public Curve
        {
        public:
            BezierSpline(const std::vector<Vector2>& points, const std::vector<Vector2>& tangents, float epsilon = 0.001f);
            BezierSpline(std::vector<Vector2>&& points, std::vector<Vector2>&& tangents, float epsilon = 0.001f);
 
            virtual float Sample(float argument) const override;
 
            std::vector<Vector2>& GetPoints();
            const std::vector<Vector2>& GetPoints() const;
 
            std::vector<Vector2>& GetTangents();
            const std::vector<Vector2>& GetTangents() const;
 
            CurveTypeId GetTypeId() const override;
 
        private:
            Vector2 BezierInterpolation(const std::size_t beginIndex, const std::size_t endIndex, float t) const;
 
            std::vector<Vector2> points{};
            std::vector<Vector2> tangents{};
            float epsilon = 0.0f;
 
            float leftGradient = 0.0f;
            float leftIntercept = 0.0f;
            float rightGradient = 0.0f;
            float rightIntercept = 0.0f;
        };
    }
}
 
#endif // GRAIL_BEZIER_SPLINE_H