qt_demoe/smoothcurve/frmsmoothcurve.h

32 lines
596 B
C++

#ifndef FRMSMOOTHCURVE_H
#define FRMSMOOTHCURVE_H
#include <QWidget>
#include <QList>
#include <QPointF>
#include <QPainterPath>
namespace Ui {
class frmSmoothCurve;
}
class frmSmoothCurve : public QWidget
{
Q_OBJECT
public:
explicit frmSmoothCurve(QWidget *parent = 0);
~frmSmoothCurve();
protected:
void paintEvent(QPaintEvent *event);
private:
Ui::frmSmoothCurve *ui;
QVector<QPointF> datas; //曲线上的点
QPainterPath smoothCurve; //平滑曲线
QPainterPath smoothCurve2; //直接连接点的非平滑曲线
};
#endif // FRMSMOOTHCURVE_H