qt_demoe/third/3rd_qcustomplot/smoothcurve.h

29 lines
749 B
C++

#ifndef SMOOTHCURVE_H
#define SMOOTHCURVE_H
#include <QObject>
#include <QVector>
#include <QPointF>
#include <QPainterPath>
#ifdef quc
class Q_DECL_EXPORT SmoothCurve
#else
class SmoothCurve
#endif
{
public:
//创建平滑曲线路径
static QPainterPath createSmoothCurve(const QVector<QPointF> &points);
static QPainterPath createSmoothCurve2(const QVector<QPointF> &points);
private:
static void calculateFirstControlPoints(double *&result, const double *rhs, int n);
static void calculateControlPoints(const QVector<QPointF> &datas,
QVector<QPointF> *firstControlPoints,
QVector<QPointF> *secondControlPoints);
};
#endif // SMOOTHCURVE_H