src/robomon/trail.h

   1 #ifndef TRAIL_H
   2 #define TRAIL_H
   3
   4 #include <QGraphicsItem>
   5 #include <QPen>
   6
   7 const unsigned trailLen = 10/*Hz*/*90/*secons*/;
   8
   9 class Trail : public QGraphicsItem
  10 {
  11         QPen pen;
  12         QPointF points[trailLen];
  13         unsigned currentIndex;
  14         QRectF bound;
  15         void findBound();
  16 public:
  17     Trail(const QPen &pen = QPen());
  18     QRectF boundingRect() const;
  19     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
  20     void addPoint(QPointF point);
  21     void reset();
  22
  23     ~Trail();
  24
  25 };
  26
  27 #endif