demos/qtdemo/guidecircle.h

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  41
  42 #ifndef GUIDECIRCLE_H
  43 #define GUIDECIRCLE_H
  44
  45 #include "guide.h"
  46 #include "demoitem.h"
  47
  48 class GuideCircle : public Guide
  49 {
  50 public:
  51     enum DIRECTION {CW = 1, CCW = -1};
  52
  53     GuideCircle(const QRectF &rect, float startAngle = 0, float span = 360, DIRECTION dir = CCW, Guide *follows = 0);
  54
  55     void guide(DemoItem *item, float moveSpeed); // overridden
  56     QPointF startPos();
  57     QPointF endPos();
  58     float length();
  59
  60 private:
  61     float posX;
  62     float posY;
  63     float radiusX;
  64     float radiusY;
  65     float startAngleRad;
  66     float endAngleRad;
  67     float spanRad;
  68     float stepAngleRad;
  69 };
  70
  71 #endif // GUIDECIRCLE_H
  72