Class

CGMutablePath

A mutable graphics path: a mathematical description of shapes or lines to be drawn in a graphics context.

Declaration

class CGMutablePath : CGPath

Topics

Creating Graphics Paths

init()

Creates a mutable graphics path.

Copying a Graphics Path

func mutableCopy() -> CGMutablePath?

Creates a mutable copy of an existing graphics path.

func mutableCopy(using: UnsafePointer<CGAffineTransform>?) -> CGMutablePath?

Creates a mutable copy of a graphics path transformed by a transformation matrix.

Constructing a Graphics Path

func move(to: CGPoint, transform: CGAffineTransform)

Begins a new subpath at the specified point.

func addLine(to: CGPoint, transform: CGAffineTransform)

Appends a straight line segment from the current point to the specified point.

func addLines(between: [CGPoint], transform: CGAffineTransform)

Adds a sequence of connected straight-line segments to the path.

func addRect(CGRect, transform: CGAffineTransform)

Adds a rectangular subpath to the path.

func addRects([CGRect], transform: CGAffineTransform)

Adds a set of rectangular subpaths to the path.

func addEllipse(in: CGRect, transform: CGAffineTransform)

Adds an ellipse that fits inside the specified rectangle.

func addRoundedRect(in: CGRect, cornerWidth: CGFloat, cornerHeight: CGFloat, transform: CGAffineTransform)

Adds a subpath to the path, in the shape of a rectangle with rounded corners.

func addArc(tangent1End: CGPoint, tangent2End: CGPoint, radius: CGFloat, transform: CGAffineTransform)

Adds an arc of a circle to the path, specified with a radius and two tangent lines.

func addRelativeArc(center: CGPoint, radius: CGFloat, startAngle: CGFloat, delta: CGFloat, transform: CGAffineTransform)

Adds an arc of a circle to the path, specified with a radius and a difference in angle.

func addCurve(to: CGPoint, control1: CGPoint, control2: CGPoint, transform: CGAffineTransform)

Adds a cubic Bézier curve to the path, with the specified end point and control points.

func addQuadCurve(to: CGPoint, control: CGPoint, transform: CGAffineTransform)

Adds a quadratic Bézier curve to the path, with the specified end point and control point.

func addPath(CGPath, transform: CGAffineTransform)

Appends another path object to the path.

func closeSubpath()

Closes and completes a subpath in a mutable graphics path.

Relationships

Inherits From

See Also

2D Drawing

class CGContext

A Quartz 2D drawing environment.

class CGImage

A bitmap image or image mask.

class CGPath

An immutable graphics path: a mathematical description of shapes or lines to be drawn in a graphics context.

class CGLayer

An offscreen context for reusing content drawn with Core Graphics.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

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