Some Macros for changing rects on one line

RectHelper.h

//
//  RectHelper.h
//
//  Created by Richard Adem on 24/11/11.
//  Copyright (c) 2011 Richard Adem. All rights reserved.
//
// richy486@gmail.com
// twitter.com/richy486
//

#ifndef RectHelper_h
#define RectHelper_h

    #define SetRectX(v, a) v = CGRectMake(a,          v.origin.y, v.size.width, v.size.height)
    #define SetRectY(v, a) v = CGRectMake(v.origin.x, a,          v.size.width, v.size.height)
    #define SetRectW(v, a) v = CGRectMake(v.origin.x, v.origin.y, a,            v.size.height)
    #define SetRectH(v, a) v = CGRectMake(v.origin.x, v.origin.y, v.size.width, a)
    #define SetRectXY(v, x, y) v = CGRectMake(x,          y,          v.size.width, v.size.height)
    #define SetRectWH(v, w, h) v = CGRectMake(v.origin.x, v.origin.y, w,            h)
    #define SetRectYH(v, y, h) v = CGRectMake(v.origin.x, y         , v.size.width, h)
    #define SetRectXW(v, x, w) v = CGRectMake(x,          v.origin.y, w,            v.size.height)

    #define RectWithX(v, a) CGRectMake(a,          v.origin.y, v.size.width, v.size.height)
    #define RectWithY(v, a) CGRectMake(v.origin.x, a,          v.size.width, v.size.height)
    #define RectWithW(v, a) CGRectMake(v.origin.x, v.origin.y, a,            v.size.height)
    #define RectWithH(v, a) CGRectMake(v.origin.x, v.origin.y, v.size.width, a)
    #define RectWithXY(v, x, y) CGRectMake(x,          y,          v.size.width, v.size.height)
    #define RectWithWH(v, w, h) CGRectMake(v.origin.x, v.origin.y, w,            h)

#endif