Instance Method

addEllipse(in:)

Adds an ellipse that fits inside the specified rectangle.

Declaration

func addEllipse(in rect: CGRect)

Parameters

rect

A rectangle that defines the area for the ellipse to fit in.

Discussion

The ellipse is approximated by a sequence of Bézier curves. Its center is the midpoint of the rectangle defined by the rect parameter. If the rectangle is square, then the ellipse is circular with a radius equal to one-half the width (or height) of the rectangle. If the rect parameter specifies a rectangular shape, then the major and minor axes of the ellipse are defined by the width and height of the rectangle.

The ellipse forms a complete subpath of the path—that is, the ellipse drawing starts with a move-to operation and ends with a close-subpath operation, with all moves oriented in the clockwise direction.

See Also

Constructing a Current Graphics Path

func beginPath()

Creates a new empty path in a graphics context.

func move(to: CGPoint)

Begins a new subpath at the specified point.

func addLine(to: CGPoint)

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

func addLines(between: [CGPoint])

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

func addRect(CGRect)

Adds a rectangular path to the current path.

func addRects([CGRect])

Adds a set of rectangular paths to the current path.

func addArc(center: CGPoint, radius: CGFloat, startAngle: CGFloat, endAngle: CGFloat, clockwise: Bool)

Adds an arc of a circle to the current path, specified with a radius and angles.

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

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

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

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

func addQuadCurve(to: CGPoint, control: CGPoint)

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

func addPath(CGPath)

Adds a previously created path object to the current path in a graphics context.

func closePath()

Closes and terminates the current path’s subpath.

var path: CGPath?

Returns a path object built from the current path information in a graphics context.

func replacePathWithStrokedPath()

Replaces the path in the graphics context with the stroked version of the path.