//definiton a rect CGRect rect1 = CGRectMake(0.0f, 0.0f, 320.0f, 480.0f); //获取2个矩形的相交区域 rect = CGRectIntersection(rect, bounds); //create smaller or bigger rect(have same center) CGRect rect2 = CGRectInset(rect, 32.0f, 32.0f); //CGRect and NSString NSString *string = NSStringFromCGRect(rect1); rect1 = CGRectFromString(string); //zero CGRectZero //full screen rect [[UIScreen mainScreen] applicationFrame]; 常用函数: CGRectContainsPoint(); //点是否在矩形中 CGRectContainsRect......
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