Struct Light 

pub struct Light {
    pub grey: u16,
    pub tint: [u16; 3],
}

One light: how a picture’s colours change in it. Each pixel goes grey of the way to its own grey, then its red, green and blue are multiplied by tint. The numbers are thousandths (0 to 1000), so a light is a plain value a frame item can carry and compare.

Fields

grey: u16

How far a colour goes to its own grey: 0 = not at all, 1000 = grey.

tint: [u16; 3]

What red, green and blue are multiplied by: 1000 = left as they are.

Implementations

impl Light

pub const PLAIN: Self

The light that changes nothing.

pub fn new(grey: f32, tint: [f32; 3]) -> Self

The light of grey and tint as the file writes them (0 to 1), to the nearest thousandth; what is outside that range is cut to it.

pub fn is_plain(self) -> bool

Whether it changes no colour.

pub fn apply(self, rgb: [u8; 3]) -> [u8; 3]

The colour rgb (red, green, blue) in this light. The one place that knows the sum: every renderer shades with it.

Trait Implementations

impl Clone for Light

fn clone(&self) -> Light

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Light

impl Debug for Light

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

Formats the value using the given formatter.

impl Default for Light

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Light

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Light

impl Hash for Light

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 Ord for Light

fn cmp(&self, other: &Light) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Light

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Light

fn partial_cmp(&self, other: &Light) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Light

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 Light