CGRectMake 延伸

判断给定的点是否被一个CGRect包含,可以用CGRectContainsPoint函数

BOOLcontains=CGRectContainsPoint(CGRectrect,CGPointpoint);

判断一个CGRect是否包含再另一个CGRect里面,常用与测试给定的对象之间是否又重叠

BOOLcontains =CGRectContainsRect(CGRectrect1,CGRectrect2);

判断两个结构体是否有交错.可以用CGRectIntersectsRect

BOOLcontains =CGRectIntersectsRect(CGRectrect1,CGRectrect2);

floatfloat_ =CGRectGetMaxX(CGRectrect);返回矩形右边缘的坐标

CGRectGetMinY返回矩形顶部的坐标

CGRectGetMidX返回矩形中心X的坐标

CGRectGetMidY返回矩形中心Y的坐标

CGRectGetMinX 返回矩形左边缘的坐标

CGRectGetMaxY返回矩形底部的坐标

CGRectInset((cgrect)(例如：fram.bouns), (float)a, (float)b;//将一个矩形上下a，左右加边界b；返回值是一个cgrect

CGRectOffset((cgrect), (float)a, (float)b);//作用将一个方框向左a向下b移动一定距离，产生一个新的方框

还有就是需要定义一些 策略    示例代码

#import <UIKit/UIKit.h>

@interface UIView (Frame)

@property (nonatomic, assign) CGFloat x;

@property (nonatomic, assign) CGFloat y;

@property (nonatomic, assign) CGFloat width;

@property (nonatomic, assign) CGFloat height;

@property (nonatomic, assign) CGPoint origin;

@property (nonatomic, assign) CGSize size; @end

#import "UIView+Frame.h"

@implementation UIView (Frame)

- (void)setX:(CGFloat)x {

CGRect frame = self.frame;

frame.origin.x = x;

self.frame = frame;

}

- (CGFloat)x {

return self.frame.origin.x;

}

- (void)setY:(CGFloat)y {

CGRect frame = self.frame;

frame.origin.y = y;

self.frame = frame;

}

- (CGFloat)y { return self.frame.origin.y; }

- (void)setWidth:(CGFloat)width { CGRect frame = self.frame; frame.size.width = width; self.frame = frame; }

- (CGFloat)width { return self.frame.size.width; }

- (void)setHeight:(CGFloat)height { CGRect frame = self.frame; frame.size.height = height; self.frame = frame; }

- (CGFloat)height { return self.frame.size.height; }

- (void)setOrigin:(CGPoint)origin { CGRect frame = self.frame; frame.origin = origin; self.frame = frame; }

- (CGPoint)origin { return self.frame.origin; }

-(void)setSize:(CGSize)size { CGRect frame = self.frame; frame.size = size; self.frame = frame; }

-(CGSize)size { return self.frame.size; }

@end

还可以扩展  bottom top 等

这样写了之后，工程里用的就很方便啦