Struct LayerTransitionState 

pub struct LayerTransitionState {
    pub spec: TransitionSpec,
    pub opacity: Transitioning<f32>,
    pub color: Transitioning<[f32; 4]>,
    pub secondary_color: Transitioning<[f32; 4]>,
    pub width: Transitioning<f32>,
    pub height: Transitioning<f32>,
    pub base: Transitioning<f32>,
}

Per-layer transition state for all transitionable paint properties.

Stores a Transitioning wrapper for each property that supports transitions. The engine updates this state each frame in the style-evaluation loop.

Fields

spec: TransitionSpec

The transition spec to use for this layer’s properties.

opacity: Transitioning<f32>

Layer opacity transition.

color: Transitioning<[f32; 4]>

Primary fill/stroke/circle colour transition.

secondary_color: Transitioning<[f32; 4]>

Secondary colour (outline, stroke).

width: Transitioning<f32>

Primary width (line width, circle radius, outline width).

height: Transitioning<f32>

Fill-extrusion height.

base: Transitioning<f32>

Fill-extrusion base.

Implementations

impl LayerTransitionState

pub fn from_initial( spec: TransitionSpec, opacity: f32, color: [f32; 4], secondary_color: [f32; 4], width: f32, height: f32, base: f32, ) -> Self

Create initial (settled) state from evaluated property values.

pub fn update( &mut self, now: f64, opacity: f32, color: [f32; 4], secondary_color: [f32; 4], width: f32, height: f32, base: f32, )

Update all properties from freshly evaluated values.

pub fn resolve(&self, now: f64) -> ResolvedTransitions

Resolve all transitioned values for the current time.

pub fn has_active_transitions(&self, now: f64) -> bool

Returns true if any property is still mid-transition.

Trait Implementations

impl Clone for LayerTransitionState

fn clone(&self) -> LayerTransitionState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LayerTransitionState

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

Formats the value using the given formatter.