Enum Composition 

pub enum Composition {
    Sum,
    Over,
    Height {
        contrast: f32,
    },
}

How the weighted layers combine.

Variants

Sum

sum(weight[i] * layer[i]).

Over

Slot 0, then lerp(colour, layer[i], weight[i]) for each later slot in order.

Height

Each slot’s weight w_i times its height h_i (LayerWeights::heights) is p_i, the highest m; slot i gets u_i = max(p_i - (m - (1 - contrast)), 0), normalized by their sum (height_blend). Where every u_i is 0 (a contrast of 1 or more) the blend has no weight: a consumer states its fallback.

Fields

contrast: f32

Trait Implementations

impl Clone for Composition

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 Composition

impl Debug for Composition

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

Formats the value using the given formatter.

impl PartialEq for Composition

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Composition

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 Composition