Path methods.

Extension+Path.swift

// Okunabilirliği arttırmak amaçlı, düzenleme yaptım.

extension Path {

    /// Begins a new subpath at the specified point. 
    func move(to p: CGPoint)

    /// Appends a straight line segment from the current point to the
    /// specified point.
    func addLine(to p: CGPoint)

    /// Adds a quadratic Bézier curve to the path, with the
    /// specified end point and control point.
    func addQuadCurve(to p: CGPoint, control cp: CGPoint)

    /// Adds a cubic Bézier curve to the path, with the
    /// specified end point and control points.
    func addCurve(
        to p: CGPoint, 
        control1 cp1: CGPoint, 
        control2 cp2: CGPoint
    )

    /// Closes and completes the current subpath.
    func closeSubpath()

    /// Adds a rectangular subpath to the path.
    func addRect(
        _ rect: CGRect, 
        transform: CGAffineTransform = .identity
    )

    /// Adds a rounded rectangle to the path.
    func addRoundedRect(
        in rect: CGRect, 
        cornerSize: CGSize, 
        style: RoundedCornerStyle = .circular, 
        transform: CGAffineTransform = .identity
    )

    /// Adds an ellipse to the path.
    func addEllipse(
        in rect: CGRect, 
        transform: CGAffineTransform = .identity
    )

    /// Adds an arc of a circle to the path, specified with a radius
    /// and a difference in angle.
    func addRelativeArc(
        center: CGPoint, 
        radius: CGFloat, 
        startAngle: Angle, 
        delta: Angle, 
        transform: CGAffineTransform = .identity
    )

    /// Adds an arc of a circle to the path, specified with a radius
    /// and angles.
    func addArc(
        center: CGPoint, 
        radius: CGFloat, 
        startAngle: Angle, 
        endAngle: Angle, 
        clockwise: Bool, 
        transform: CGAffineTransform = .identity
    )

    /// Appends a copy of `path` to the path.
    func addPath(
        _ path: Path, 
        transform: CGAffineTransform = .identity
    )

    /// Returns the last point in the path, or nil if the path contains
    /// no points.
    var currentPoint: CGPoint? { get }

    /// Returns a path constructed by applying `transform` to all
    /// points of `self`.
    func applying(_ transform: CGAffineTransform) -> Path

    /// Returns a path constructed by translating `self` by `(dx, dy)`.
    func offsetBy(dx: CGFloat, dy: CGFloat) -> Path
}