Enum Orientation 

pub enum Orientation {
    Normal,
    FlipH,
    Rotate180,
    FlipV,
    Transpose,
    Rotate90,
    Transverse,
    Rotate270,
}

Variants

Normal

1 — 0°, no transform (the stored pixels are already upright).

FlipH

2 — mirrored horizontally.

Rotate180

3 — rotated 180°.

FlipV

4 — mirrored vertically.

Transpose

5 — mirrored horizontally then rotated 90° clockwise (transpose).

Rotate90

6 — rotated 90° clockwise.

Transverse

7 — mirrored horizontally then rotated 90° anti-clockwise (transverse).

Rotate270

8 — rotated 90° anti-clockwise.

Implementations

impl Orientation

pub fn from_exif(v: u16) -> Self

Map a raw EXIF Orientation value (1..=8) to an Orientation; anything out of range (including 0) is treated as Normal.

pub fn is_identity(self) -> bool

Whether this orientation needs any container transform property at all.

pub fn imir_axis(self) -> Option<bool>

The imir mirror axis, if mirroring is part of this orientation. Some(true) = mirror across the horizontal axis (vertical flip); Some(false) = mirror across the vertical axis (horizontal flip); None = no mirror. (HEIF imir: low bit, 1 = horizontal axis.)

pub fn irot_steps(self) -> u8

The irot rotation in 90° anti-clockwise steps (0..=3), applied after mirroring. HEIF defines irot as anti-clockwise; we decompose each EXIF orientation into an optional mirror followed by an anti-clockwise rotation.

Trait Implementations

impl Clone for Orientation

fn clone(&self) -> Orientation

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Orientation

impl Debug for Orientation

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Orientation

fn default() -> Orientation

Returns the “default value” for a type.

impl Eq for Orientation

impl PartialEq for Orientation

fn eq(&self, other: &Orientation) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Orientation