CvRect、RECT和Rect

最新推荐文章于 2025-05-19 08:50:07 发布

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本文详细介绍了CvRect、RECT及Rect等矩形结构的定义与使用方法，包括它们在不同库中的具体实现形式及其成员变量的作用。CvRect来源于OpenCV库，RECT为Windows平台标准类型，而Rect则提供了更多高级功能。

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CvRect定义：在...build\include\opencv2\core\types_c.h下

typedef struct CvRect
{
    int x;
    int y;
    int width;
    int height;
}
CvRect;

RECT定义：在WinDef.h下

typedef struct tagRECT
{
    LONG    left;
    LONG    top;
    LONG    right;
    LONG    bottom;
} RECT, *PRECT, NEAR *NPRECT, FAR *LPRECT;

Rect定义：在core.hpp下

和CvRect相同也是x,y,width,height

<span style="font-family: Arial, Helvetica, sans-serif;">typedef Rect_<int> Rect</span>

template<typename _Tp> class Rect_
{
public:
    typedef _Tp value_type;

    //! various constructors
    Rect_();
    Rect_(_Tp _x, _Tp _y, _Tp _width, _Tp _height);    //和CvRect相同也是下，x，y，width，height
    Rect_(const Rect_& r);
    Rect_(const CvRect& r);
    Rect_(const Point_<_Tp>& org, const Size_<_Tp>& sz);
    Rect_(const Point_<_Tp>& pt1, const Point_<_Tp>& pt2);

    Rect_& operator = ( const Rect_& r );
    //! the top-left corner
    Point_<_Tp> tl() const;
    //! the bottom-right corner
    Point_<_Tp> br() const;

    //! size (width, height) of the rectangle
    Size_<_Tp> size() const;
    //! area (width*height) of the rectangle
    _Tp area() const;

    //! conversion to another data type
    template<typename _Tp2> operator Rect_<_Tp2>() const;
    //! conversion to the old-style CvRect
    operator CvRect() const;

    //! checks whether the rectangle contains the point
    bool contains(const Point_<_Tp>& pt) const;

    _Tp x, y, width, height; //< the top-left corner, as well as width and height of the rectangle
};