#ifndef PEAKPOINT_H
#define PEAKPOINT_H

#include <QPointF>

#include "filemanager.h"


namespace PeakPoint{
void setExperimentData(const QVector<FileManager::ExperimentData>&);
void setRegionPointX(const double,const double);
double findClosestY(double targetX);
QPointF findPeakPoint();
QString textFormat(const double enthalpyValue,
                   const double peakValue,
                   const double startPoint,
                   const double endPoint);


//private
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);
double calculateArea(const std::vector<QPointF> &points);
QPointF findClosestPointByX(double target);

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

#endif // PEAKPOINT_H