Struct Tween 

pub struct Tween {
    pub from: u64,
    pub to: u64,
    pub start_ms: u64,
    pub duration_ms: u64,
    pub easing: Easing,
}

A small tween helper for adapter-driven smooth scrolling.

This is deliberately minimal and framework-neutral:

• The adapter provides the time source (now_ms).
• The adapter applies the returned scroll offset to the real scroll container.

Fields

from: u64

to: u64

start_ms: u64

duration_ms: u64

easing: Easing

Implementations

impl Tween

pub fn new( from: u64, to: u64, start_ms: u64, duration_ms: u64, easing: Easing, ) -> Self

Creates a tween.

duration_ms is clamped to at least 1ms.

pub fn is_done(&self, now_ms: u64) -> bool

pub fn sample(&self, now_ms: u64) -> u64

Samples the tween at time now_ms.

pub fn retarget(&mut self, now_ms: u64, new_to: u64, duration_ms: u64)

Retargets the tween while preserving continuity at now_ms.

Trait Implementations

impl Clone for Tween

fn clone(&self) -> Tween

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Tween

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Tween

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Tween

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Tween

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Tween

impl Eq for Tween

impl StructuralPartialEq for Tween