windcircle.h

#ifndef WINDCIRCLE_H
#define WINDCIRCLE_H

#include <QtCore/QString>
#include <QtCore/QPointF>
#include <QtCore/QEvent>
#include <QtGui/qevent.h>   // event de la partie graphique
#include <QtGui/QPainter>
#include <QtWidgets/QWidget>
#include <QtGui/QImage>

#include <cmath>
#include <iostream>

class WindCircle : public QWidget
{
    Q_OBJECT
private:
    QImage* buffer;
    QPointF* center;
    QPointF* direction;
    int angle;

public:
    /* Constructeur et destructeur */
    WindCircle();
    virtual ~WindCircle();

    /* Getters et Setters */
    void initAngle(int x) { angle= x; }

    int getAngle() const { return angle; }

    void varyAngle();

private:
    void updateAngle(int x);

    void setDirection(int angle);

    /* Méthodes graphiques */
    void drawCircle();
    void drawDir();
    void cleanBuffer();

protected:
    /* Events */
    void resizeEvent(QResizeEvent * event);
    void paintEvent(QPaintEvent* event);
    void mousePressEvent(QMouseEvent* event);
signals:
    void modifAngle();
};

#endif // WINDCIRCLE_H