ios开发之--CGRectGetXxx方法图解 和代码NSLog输出值

- (void)test {  
    CGRect rect = CGRectMake(10, 20, 150, 30);  
  
    // 最小Y坐标，即矩形的顶部top y坐标：   minY = rect.y = 20.000000  
    NSLog(@"CGRectGetMinY   = y             = %f", CGRectGetMinY(rect));     
    // 最大Y坐标，即矩形的底部bottom y坐标：maxY = y + height = 50  
    NSLog(@"CGRectGetMaxY   = y + height    = %f", CGRectGetMaxY(rect));    
    // 最小x坐标，即矩形的左边x left坐标 : minX = x = 10  
    NSLog(@"CGRectGetMinX   = x             = %f", CGRectGetMinX(rect));    
    // 最大x坐标，集矩形的右边横坐标right maxX = x + width = 10 + 150 = 160  
    NSLog(@"CGRectGetMaxX   = x + width     = %f", CGRectGetMaxX(rect));    
    // 中点横坐标：midX = x + width/2 = 10 +  150/2 = 10 + 75 = 85  
    NSLog(@"CGRectGetMidX   = x + width/2   = %f", CGRectGetMidX(rect));    
    // 中点纵坐标：midY = y + height / 2 = 20 + 30/2 = 20 + 15 = 35  
    NSLog(@"CGRectGetMidY   = y + height /2 = %f", CGRectGetMidY(rect));     
    NSLog(@"CGRectGetWidth  = rect.width    = %f", CGRectGetWidth(rect));  // width = 150  
    NSLog(@"CGRectGetHeight = rect.height   = %f", CGRectGetHeight(rect)); // height = 30  
}

图解：