Struct Interval 

pub struct Interval { /* private fields */ }

A half-open interval [start, start + duration) on a timeline.

This is the single definition of “time range to progress” shared by SceneContext::progress_in, SceneContext::ease_in and crate::Tween. Comparisons use integer ticks; a zero duration jumps from zero to one at start.

use motion_core::prelude::*;
use motion_core::Interval;
let interval = Interval::new(Time::ZERO + 1.seconds(), 2.seconds());
assert_eq!(interval.progress(Time::ZERO), 0.0);
assert_eq!(interval.progress(Time::ZERO + 2.seconds()), 0.5);
assert_eq!(interval.progress(Time::ZERO + 5.seconds()), 1.0);

Implementations

impl Interval

pub const fn new(start: Time, duration: Duration) -> Self

Creates an interval starting at start and lasting duration.

pub const fn start(&self) -> Time

Returns the first time inside the interval.

pub const fn duration(&self) -> Duration

Returns the nonnegative length of the interval.

pub fn contains(&self, time: Time) -> bool

Reports whether time lies in [start, start + duration).

Wide integer differences allow queries across opposite signed tick extremes.

pub fn progress(&self, time: Time) -> f64

Returns progress clamped to 0.0..=1.0: zero before the start, one at or after the end.

pub fn ease(&self, time: Time, easing: Easing) -> f64

Returns Self::progress shaped by an easing curve.

Trait Implementations

impl Clone for Interval

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 Interval

impl Debug for Interval

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

Formats the value using the given formatter.

impl Eq for Interval

impl PartialEq for Interval

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Interval