A structure that contains a point in a two-dimensional coordinate system.


struct CGPoint


Creating Point Values

init(x: Double, y: Double)

Creates a point with coordinates specified as floating-point values.

init(x: Int, y: Int)

Creates a point with coordinates specified as integer values.

init(x: CGFloat, y: CGFloat)

Creates a point with coordinates specified as CGFloat values.

Special Values

static var zero: CGPoint

The point with location (0,0).


Creates a point with location (0,0).

Geometric Properties

var x: CGFloat

The x-coordinate of the point.

var y: CGFloat

The y-coordinate of the point.

Transforming Points

func applying(CGAffineTransform) -> CGPoint

Returns the point resulting from an affine transformation of an existing point.

Alternate Representations

var dictionaryRepresentation: CFDictionary

Returns a dictionary representation of the specified point.

init?(dictionaryRepresentation: CFDictionary)

Creates a point from a canonical dictionary representation.

var debugDescription: String

A textual representation of the point’s coordinate values.

var customMirror: Mirror

A representation of the point’s structure and display style for use in debugging.

var customPlaygroundQuickLook: PlaygroundQuickLook

A representation of the point for use in Playgrounds.


Comparing Points

func equalTo(CGPoint) -> Bool

Returns whether two points are equal.

See Also

Geometric Data Types

struct CGFloat

The basic type for floating-point scalar values in Core Graphics and related frameworks.

struct CGSize

A structure that contains width and height values.

struct CGRect

A structure that contains the location and dimensions of a rectangle.

struct CGVector

A structure that contains a two-dimensional vector.

struct CGAffineTransform

An affine transformation matrix for use in drawing 2D graphics.