Common structural Body nsrange,nspoint,nssize (cgsize) in objective-c, Nsrect case Analysis _c language

In this paper, the definition and usage of the structural body nsrange,nspoint,nssize (cgsize) and Nsrect in Objective-c are described in detail, as follows:

1, Nsrange:

Nsrange's prototype is

typedef struct _NSRANGE {
nsuinteger location;
Nsuinteger length;
} Nsrange;

Nsmakerange functions:

Ns_inlinez is an inline function

typedef nsrange *nsrangepointer;

Ns_inline nsrange nsmakerange (Nsuinteger Loc, Nsuinteger len) {
nsrange R;
r.location = loc;
R.length = len;
return r;
}

How to use:

The Nsrange represents the range of
nsrange ranges;
Range.location =;
Range.length =;

NSLog (@ "Location is%zi", range.location);
NSLog (@ "Length is%zi", range.length);

Quick Create
range = Nsmakerange (8);
NSLog (@ "Location is%zi", range.location);
NSLog (@ "Length is%zi", range.length);

Nsstringfromrange converts the above structure to a string type and prints out

nsstring* str1 = nsstringfromrange (range);

%@ is an OC object, range represents a struct, and Str is an OC object
NSLog (@ "Rang is%@", str1);

2, Nspoint:

Nspoint's prototype:

struct Cgpoint {
cgfloat x;
CGFloat y;
};

Nsmakepoint function:

Ns_inline nspoint Nsmakepoint (cgfloat x, cgfloat y) {
nspoint p;
p.x = x;
P.y = y;
return p;
}

Cgpointmake function:

Cgpointmake (CGFloat x, cgfloat y)
{
Cgpoint p; p.x = x; p.y = y; return p;
}

How to use:

Nspoint refers to the position
Nspoint point;

Assigning value to the points in the structure
point.x = ten;
Point.y = ten;

Quick Create dot point
= Nsmakepoint (a);

It is common for cgpointmake to create points of function point
= Cgpointmake (s);
nsstring* str2 = Nsstringfrompoint (point);
NSLog (@ "point is%@", str2);

3, Cgsize:

Cgsize's prototype:

struct Cgsize {
cgfloat width;
CGFloat height;
};

Nsmakesize function:

Ns_inline nssize nsmakesize (cgfloat W, cgfloat h) {
nssize s;
S.width = W;
S.height = h;
return s;
}

Cgsizemake function:

Cgsizemake (cgfloat width, cgfloat height)
{
cgsize size; size.width = width; size.height = height; return size;
   }

How to use:

Nssize size;
  
Size.width = m;
Size.Height =;
Size = Nsmakesize (a);
Size = Cgsizemake (one by one);

nsstring* STR3 = nsstringfromsize (size);
NSLog (@ "%@", STR3);

4, CGRect:

CGRect's prototype:

struct CGRect {
cgpoint origin;
Cgsize size;
};

CGRectMake functions:

CGRectMake (CGFloat x, cgfloat y, cgfloat width, cgfloat height)
{
cgrect rect;
rect.origin.x = x; Rect.origin.y = y;
Rect.size.width = width; rect.size.height = height;
return rect;
}

Nsmakerect function:

Ns_inline nsrect Nsmakerect (cgfloat x, CGFloat y, CGFloat W, CGFloat h) {
nsrect R;
r.origin.x = x;
R.origin.y = y;
R.size.width = W;
R.size.height = h;
return r;
}

How to use

It includes both size and position
nsrect rect;
Rect.origin.x =;
RECT.ORIGIN.Y = n;
Rect.size.width =;
Rect.size.height =;

Quick Create method
rect = CGRectMake (a)
Rect = Nsmakerect (one, one, one, one);

into a string to print out
nsstring* STR5 = nsstringfromrect (rect);
NSLog (@ "rect is%@", STR5);