Struct Normal 

pub struct Normal {
    pub place: Place,
    pub encoding: NormalEncoding,
    pub space: NormalSpace,
}

The surface’s normal: its place, how its lanes store it and the space it is in.

Fields

place: Place

The lanes the normal is stored in.

encoding: NormalEncoding

How the lanes encode the normal.

space: NormalSpace

The space the decoded normal is in.

Implementations

impl Normal

pub fn width(encoding: NormalEncoding) -> u32

The lanes its encoding stores the normal in.

pub fn vector(&self, values: [f32; 4]) -> [f32; 3]

The vector the lanes store, out of the four values of its output, as the encoding gives it back: the three stored components unbiased (Xyz, XyzUnorm, XyzBiased), which a program need not have written at unit length; the unit vector of the encodings that make one (the two-lane, octahedral and cube-face ones).

A cube face is taken as the nearest axis to lane 3 and the side of one half lane 2 is on, without NormalEncoding::decode_cube_face’s refusal of lanes between them, which needs the target’s quantisation step; the payloads beside a normal (the diamond layout’s and the cube face’s) are not part of it.

pub fn decode(&self, values: [f32; 4]) -> Option<[f32; 3]>

The unit normal the lanes store, or None where they hold no direction (a vector of length 1e-8 or less).

Trait Implementations

impl Clone for Normal

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Normal

impl Debug for Normal

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

Formats the value using the given formatter.

impl Eq for Normal

impl Hash for Normal

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Normal

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Normal

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Normal