Enumeration 列挙

Image.Orientation

The orientation of an image.

Declaration 宣言

@frozen enum Orientation

Overview 概要

Many image formats such as JPEG include orientation metadata in the image data. In other cases, you can specify image orientation in code. Properly specifying orientation is often important both for displaying the image and for certain kinds of image processing.

In SwiftUI, you provide an orientation value when initializing an Image from an existing CGImage.

Topics 話題

Getting Image Orientations

case up

A value that indicates the original pixel data matches the image’s intended display orientation.

case down

A value that indicates a 180° rotation of the image from the orientation of its original pixel data.

case left

A value that indicates a 90° counterclockwise rotation from the orientation of its original pixel data.

case right

A value that indicates a 90° clockwise rotation of the image from the orientation of its original pixel data.

Getting Mirrored Image Orientation

case upMirrored

A value that indicates a horizontal flip of the image from the orientation of its original pixel data.

case downMirrored

A value that indicates a vertical flip of the image from the orientation of its original pixel data.

case leftMirrored

A value that indicates a 90° clockwise rotation and horizontal flip of the image from the orientation of its original pixel data.

case rightMirrored

A value that indicates a 90° counterclockwise rotation and horizontal flip from the orientation of its original pixel data.

Getting All Orientations

static var allCases: [Image.Orientation]

A collection of all values of this type. この型の全ての値からなるコレクション。

typealias AllCases

A type that can represent a collection of all values of this type. ある型、それはこの型の全ての値からなるあるコレクションを表すことができます。

Creating an Orientation

init?(rawValue: UInt8)

Creates a new instance with the specified raw value. ある新しいインスタンスをこの指定された生の値で作成します。

var rawValue: UInt8

The corresponding value of the raw type. 生の型の対応している値。

typealias RawValue

The raw type that can be used to represent all values of the conforming type. 準拠している型の全ての値を表すために使われることができる生の型。

Comparing Orientations

static func == (Image, Image) -> Bool

Indicates whether two images are equal.

static func != (Self, Self) -> Bool

Indicates whether two orientations are unequal.

Default Implementations 省略時実装

Equatable Implementations

RawRepresentable Implementations