source: trunk/demos/qtdemo/guidecircle.h

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#ifndef GUIDECIRCLE_H
#define GUIDECIRCLE_H

#include "guide.h"
#include "demoitem.h"

class GuideCircle : public Guide
{
public:
    enum DIRECTION {CW = 1, CCW = -1};

    GuideCircle(const QRectF &rect, float startAngle = 0, float span = 360, DIRECTION dir = CCW, Guide *follows = 0);

    void guide(DemoItem *item, float moveSpeed); // overridden
    QPointF startPos();
    QPointF endPos();
    float length();

private:
    float posX;
    float posY;
    float radiusX;
    float radiusY;
    float startAngleRad;
    float endAngleRad;
    float spanRad;
    float stepAngleRad;
};

#endif // GUIDECIRCLE_H