Struct Tween 

pub struct Tween<Value> { /* private fields */ }

A finite endpoint-to-endpoint interpolation with double-precision progress.

use motion_core::prelude::*;
use motion_core::{
    DisplayList, RasterLimits, ResourceStore, ValidatedDisplayList, MAX_PATH_VERBS,
    MAX_STROKE_VERBS, MAX_SVG_PATH_BYTES, sample_offsets,
};
let movement = Tween::new(Point::ORIGIN, Point::new(100.0, 40.0), 2.seconds());
assert_eq!(movement.sample(1.seconds().after_origin()), Point::new(50.0, 20.0));
assert_eq!(movement.sample(Time::from_seconds(-1.0)), Point::ORIGIN);

Implementations

impl<Value> Tween<Value>

pub fn new(from: Value, to: Value, duration: Duration) -> Self

Creates a linear tween. A zero duration holds from before zero and to at/after zero.

pub fn easing(self, easing: Easing) -> Self

Selects a curve.

Trait Implementations

impl<Value: Clone> Clone for Tween<Value>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Value: Debug> Debug for Tween<Value>

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

Formats the value using the given formatter.

impl<Value: Interpolate + Send + Sync> FiniteAnimation<Value> for Tween<Value>

fn duration(&self) -> Duration

Returns the nonnegative duration.

fn delay(self, offset: Duration) -> Delay<Self>

where Self: Sized,

Delays the animation, holding its initial value before the offset.

fn try_delay(self, offset: Duration) -> Result<Delay<Self>, ValidationError>

where Self: Sized,

Delays like Self::delay, reporting duration overflow.

fn speed(self, factor: f64) -> Speed<Self>

where Self: Sized,

Changes playback speed by a finite, strictly positive factor. Durations round to the nearest tick; a collapsed animation becomes instantaneous.

fn try_speed(self, factor: f64) -> Result<Speed<Self>, ValidationError>

where Self: Sized,

Changes speed like Self::speed, reporting an invalid factor or unrepresentable duration.

fn then<Next: FiniteAnimation<Value>>(self, next: Next) -> Then<Self, Next>

where Self: Sized,

Runs two animations in sequence. The second owns their shared boundary. Duration overflow panics at construction.

fn reverse(self) -> Reverse<Self>

where Self: Sized,

Reverses the animation.

fn repeat(self, count: u32) -> Repeat<Self>

where Self: Sized,

Plays the animation count times. Intermediate boundaries restart; the final boundary holds the target. Zero repeats hold the initial value. Duration overflow panics at construction.

fn ping_pong(self) -> PingPong<Self>

where Self: Sized,

Plays the animation forward then backward, ending at its initial value. Duration overflow panics at construction.

fn boxed_finite(self) -> Arc<dyn FiniteAnimation<Value>>

where Self: Sized + 'static,

Shares a type-erased animation, retaining sampling, duration and combinators.

impl<Value: Interpolate + Send + Sync> Signal<Value> for Tween<Value>

fn sample(&self, time: Time) -> Value

Samples without advancing a clock or changing playback state.

fn sample_at(&self, elapsed: Duration) -> Value

Samples elapsed after the time origin, shorthand for sample(elapsed.after_origin()).

fn map<Output, Function>(self, function: Function) -> Map<Self, Function, Value>

where Self: Sized, Function: Fn(Value) -> Output + Send + Sync,

Transforms values without changing timing.

fn zip<OtherValue, Other>(self, other: Other) -> Zip<Self, Other>

where Self: Sized, Other: Signal<OtherValue>,

Samples in parallel; the result is finite only if both inputs are finite.

fn boxed(self) -> Arc<dyn Signal<Value>>

where Self: Sized + 'static,

Shares a type-erased signal.