ImageGeometry

public struct ImageGeometry: CustomStringConvertible

Handles the geometry of an image and provides helpers to easily rotate or flip an image.

Properties

  • The rectangle of the input image.

    Declaration

    Swift

    public let inputRect: CGRect

  • The currently applied orientation.

    Declaration

    Swift

    public var appliedOrientation: Orientation

  • The currently applied transform.

    Declaration

    Swift

    public var appliedTransform: CGAffineTransform

  • Whether or not the size is inverted.

    Declaration

    Swift

    public var isSizeInverted: Bool

Initializers

  • Creates an ImageGeometry using the given input size.

    Declaration

    Swift

    public init(inputSize: CGSize)

    Parameters

    inputSize

    The input size of the image.

    Return Value

    An image geometry.

  • Creates an ImageGeometry using the given input size and the given initial orientation.

    Declaration

    Swift

    public init(inputSize: CGSize, initialOrientation: Orientation)

    Parameters

    inputSize

    The input size of the image.
    initialOrientation

    The initial orientation to use.

    Return Value

    An image geometry.

Orientation Handling

  • Creates a CGAffineTransform from a given Orientation.

    Declaration

    Swift

    public func transform(from orientation: Orientation) -> CGAffineTransform

    Parameters

    orientation

    The Orientation to get the transform for.

    Return Value

    A CGAffineTransform, that when applied to a view rotates it to the same orientation as the passed orientation.

  • Apply a vertical flip to the image’s geometry.

    Declaration

    Swift

    public mutating func flipVertically()

  • Apply a horizontal flip to the image’s geometry.

    Declaration

    Swift

    public mutating func flipHorizontally()

  • Rotate the image’s geometry clockwise by 90 degrees.

    Declaration

    Swift

    public mutating func rotateClockwise()

  • Rotate the image’s geometry counter clockwise by 90 degrees.

    Declaration

    Swift

    public mutating func rotateCounterClockwise()

  • Directly applies a given orientation to the image’s geometry.

    Declaration

    Swift

    public mutating func apply(_ orientation: Orientation)

    Parameters

    orientation

    The orientation to apply.

Normalization

  • Normalizes a given denormalized rect using the inputRect.

    Declaration

    Swift

    public func normalize(_ rect: CGRect) -> CGRect

    Parameters

    rect

    The rect that should be normalized.

    Return Value

    The normalized rect.

  • Denormalizes the given normalized rect using the inputRect.

    Declaration

    Swift

    public func denormalize(_ rect: CGRect) -> CGRect

    Parameters

    rect

    The rect that should be denormalized.

    Return Value

    The denormalized rect.