Visual C++ OpenCV 2.1 contains（）

Question

如何使用Rect_構造函數中的contains（）函數檢查給定點是否包含在矩形中...請給我確切的函數及其參數。當我鍵入此

Point b(2,2); 
Rect a(10,10,50,50); 
cout<< Rect_::contains(b); 

There is a compile error saying 1>c:\users\kaushal\documents\visual studio 2008\projects\test1\test1.cpp(23) : error C2352: 'cv::Rect_<_Tp>::contains' : illegal call of non-static member function 
1>c:\opencv2.1\include\opencv\cxcore.hpp(385) : see declaration of 'cv::Rect_<_Tp>::contains' 

Answer 1

像你想使用的a定義區域的情況下運行的方法來決定a包含b。方法contains不是靜態的，因此您不能在類Rect上調用它。

Point b(2,2); 
Rect a(10,10,50,50); 
cout<< Rect_::contains(b); // error here - contains is not static so can't be called on class 
cout<< a.contains(b); // this is what you want - use instance with knowledge of rect