1 //判断矩形是否相交  2 bool FMath::IsRectIntersect(const FRect& rect1, const FRect& rect2)  3 {
   4     bool bResult = true;  5  6     double dWidthRectA;  7     double dHeightRectA;  8  9     double dWidthRectB; 10     double dHeightRectB; 11 12     //方便计算，中心点坐标为实际坐标的2倍 13     CPoint centerRectA; 14     CPoint centerRectB; 15 16     //bottom的y坐标比top的大 17     dWidthRectA = rect1.GetBottomRight().GetX() - rect1.GetTopLeft().GetX(); 18     dHeightRectA = rect1.GetBottomRight().GetY() - rect1.GetTopLeft().GetY(); 19 20     dWidthRectB = fabs(rect2.GetBottomRight().GetX() - rect2.GetTopLeft().GetX()); 21     dHeightRectB = fabs(rect2.GetBottomRight().GetY() - rect2.GetTopLeft().GetY()) ; 22 23     centerRectA.x = GetDoubleInt(rect1.GetTopLeft().GetX()/2 + rect1.GetBottomRight().GetX()/2); 24     centerRectA.y = GetDoubleInt(rect1.GetTopLeft().GetY()/2 + rect1.GetBottomRight().GetY()/2); 25 26     centerRectB.x = GetDoubleInt(rect2.GetTopLeft().GetX()/2 + rect2.GetBottomRight().GetX()/2); 27     centerRectB.y = GetDoubleInt(rect2.GetTopLeft().GetY()/2 + rect2.GetBottomRight().GetY()/2); 28 29     30     //判断两个矩形的中心坐标的水平和垂直距离 31     if ( (fabs(double(centerRectA.x - centerRectB.x)) <= (dWidthRectA + dWidthRectB)) 32         && (fabs(double(centerRectA.y - centerRectB.y)) <= (dHeightRectA + dHeightRectB)) ) 33     {
  34         bResult =  true; 35     } 36     else 37     {
  38         bResult =  false; 39     } 40 41     return bResult; 42 43 }

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