#ifndef POINTCALCULATE_H
#define POINTCALCULATE_H

#include <QPointF>

#include "filemanager.h"

namespace PointCalculate{
void setExperimentData(const QVector<FileManager::ExperimentData>&);

QPair<QPointF,QPointF> getStartAndEndPoint();

void setRegionPointX(const float,const float);
QPointF getClosestPointByX(const float);
QPointF getPeakPoint();
QString textFormatPeakPoint(const float enthalpyValue,
                   const float peakValue,
                   const float startPoint,
                   const float endPoint);
QString textFormatNumbericalLabel(const QPointF);
QString textFormatStartPoint(const QPointF);
QString textFormatEndPoint(const QPointF);

QPair<QPointF,QPointF> calculateStartAndEndPoint();
double calculateArea();

//​获取曲线拐点处的切线
QPair<float,float> getCurveInflectionPointTangent();
QVector<QPointF> getRegionPoints(const float,const float);
//private
void updateStartEndPoint();
QPair<QPointF,QPointF> calculateMaxDiffPointLeft();
QPair<QPointF,QPointF> calculateMaxDiffPointRight();
enum MaxDiffPointDetailType{
    Left,
    Right
};
QPair<QPointF,QPointF> calculateMaxDiffPointDetail(const MaxDiffPointDetailType type);

QPointF calculateIntersection(const QPointF p1,const QPointF p2,
                              const QPointF p3, const QPointF p4);
QVector<QPointF> getPeakPointGroup();
std::vector<float> movingAverage(const std::vector<float>& data, int windowSize);

extern QVector<FileManager::ExperimentData> _dataVtr;
extern QPointF _peakPoint;
extern QPointF _leftSelectedPoint,_rightSelectedPoint;
}

#endif // POINTCALCULATE_H